Vacuum sealed package, assembly comprising the same and method for packaging and transporting absorbent articles

Abstract

A method to obtain a vacuum sealed package (1) containing a plurality of absorbent articles (100), such as one or more diapers, said package comprising an air-impermeable outer encasement (200) encasing the plurality of absorbent articles (100) wherein the outer encasement (200) is vacuum sealed such that the plurality of absorbent articles (100) are held in the outer encasement (200) in a compressed manner; wherein the air-impermeable outer encasement (200) comprises a first film having a thickness t ranging between 5 - 500 micron.

Description

[0001] VACUUM SEALED PACKAGE, ASSEMBLY COMPRISING THE SAME AND METHOD FOR PACKAGING AND TRANSPORTING ABSORBENT ARTICLES

[0002] FIELD

[0003] The present invention relates to a vacuum sealed package containing one or more absorbent articles, an assembly comprising the same and a method for packaging and preferably transporting the one or more absorbent articles.

[0004] BACKGROUND

[0005] Absorbent articles, such as diapers, sanitary napkins, and adult incontinence products, are widely used and play a crucial role in maintaining personal hygiene and comfort. However, the absorbent articles may be bulky, occupying a significant amount of space during storage and transportation. This can lead to inefficiencies in logistics and limited capacity for transporting a larger quantity of articles.

[0006] The present inventors have recognized that the existing approaches on packaging and / or transportation of absorbent articles may not be able to achieve optimal efficiency in terms of space utilization and quantity of articles transported, certainly not while maintaining a high degree of successful transport, meaning that the articles arrive at destination without deficiency. Efforts and approaches have been made to address these challenges. However, the known approaches of packaging and / or transporting absorbent articles have not yet achieved the desired level of efficiency, safety, capacity, environmental standpoint concerns and cost-effectiveness in view of packaging, transport and use of raw materials.

[0007] Additionally, customers may find it difficult to handle bulky packages. As a result, there is a need for a technique allowing better handling of a package. Moreover, customer recognition of the package could also be improved. There is therefore a need to address one or more of the above described challenges.

[0008] SUMMARY OF THE INVENTION

[0009] The present disclosure aims to improve packaging and / or transportation of absorbent articles, such as diapers. Furthermore, there is an aim to ensure efficiency, safety, capacity, meet environmental concerns and with cost-effectiveness in view of packaging, transport and use of raw materials. Thereto, embodiments described herein provide a vacuum sealed package containing an absorbent article or a plurality of absorbent articles, such as one or more diapers, said package comprising an air-impermeable outer encasement encasing the absorbent article or the plurality of absorbent articles wherein the outer encasement is vacuum sealed such that the absorbent article or the plurality ofabsorbent articles is or are held in the outer encasement in a compressed manner; wherein the air-impermeable outer encasement comprises a first film having a thickness t ranging between 5 - 500 micron, preferably 15 - 500 micron, preferably 30 - 500 micron, more preferably 50 - 450 micron, such as 300 micron. In preferred embodiments, the air-impermeable outer encasement may in addition to the first film (Fl), e.g. as a base, further comprise another film (F2) (also called second film), e.g. as a cover, having a thickness t’ ranging between 5 - 500 micron, preferably between 5 -450 micron, preferably 10 - 300 micron, more preferably 30 - 180 micron, such as 90 micron. The first film (Fl) and the another film (F2) can further improve packaging and transportation. The “second film” and the “another film” may be used interchangeably herein. Generally applicable, the second film preferably shares at least one and the same thermoplastic polymer (e.g. PE or PP) with the first film. The second film is preferably smaller in size and / or thickness.

[0010] By having the vacuum sealed package as such, one can addresses one or more of the challenges associated with existing approaches of packaging and / or transportation of absorbent articles. The absorbent articles to be packed are preferably chosen from one or more diapers, sanitary napkins, adult incontinence products, absorbent hygiene products, or combinations thereof, more preferably one or more diapers.

[0011] The inventors have identified that the conventional approaches to packaging and / or transporting these articles have not achieved optimal efficiency in terms of space utilization and quantity of articles transported, while also maintaining a high degree of successful transport, ensuring articles arrive at their destination without any deficiencies. By vacuum sealing the package, the quantity of articles per transport unit can be improved. As a result, cost-effectiveness is improved.

[0012] Furthermore, hygiene is increased as the outer encasement seals off the absorbent article or the plurality of absorbent articles from the outside environment, thereby providing a barrier against impurities and / or contaminations. This results in increased safety and / or improved hygiene. Moreover, by having a thickness t ranging between 5 - 500 micron, the barrier functionality is ensured, and breaches can be avoided. In this manner, a high degree of successful transport of each article is ensured as the risk of arriving at destination with deficiency is reduced. Additionally, potential difficulties of handling bulky packaging can be reduced since the package being vacuum sealed allows for better handling of the absorbent articles as they are more dense by being compressed. The outer encasement comprises or is made from the first film. The thickness t of the first film is preferably 10 - 300 micron, more preferably 30 - 180 micron, most preferably about 90 micron. By choosing such thickness t within the lower and upper limits of the ranges, one ensures a good degree of barrier functionally allowing for improved hygiene while having an efficient use of raw materials which as seen from an environmental concern is highly beneficial.Generally applicable, it is preferred that the first film has a thickness t of at least 17 micron, preferably at least 20 micron, even more preferably at least 25 micron. Advantageously, by ensuring a thick layer, strength and / or conservation of the vacuum can be improved. The first film (Fl) may have a thickness t in the range of 25 micron to 500 micron, such as 300 micron. Likewise, it may generally be preferred that the second film has a thickness t of at least 16 micron, preferably at least 19 micron, even more preferably at least 24 micron. Preferably, and generally applicable, the air-impermeable outer encasement comprises a first film (Fl) having a thickness t, as described herein, and a second film (F2) having a thickness t’ which is smaller than thickness t of the first film (Fl). In doing so, use of raw material may be improved whilst ensuring a desired protection. Preferably, the total outer surface of the outer encasement (200) comprises more area defined by the first film (Fl) than area defined by the second film (F2). In doing so, protection can be improved. The second film may be sealed as a cover. According to an embodiment, the air-impermeable outer encasement comprises a first film (Fl) having a thickness t, in the range of 20 micron to 500 micron (e.g. 300 micron), and a second film (F2) having a thickness t’ which is smaller than thickness t of the first film (Fl), whereby thickness t’ lies in the range of 20 micron to 450 micron (e.g. 90 micron).

[0013] Sub Encasement(s)

[0014] It is generally desired that the plurality of absorbent articles encased by a sub-encasement within the outer encasement, in particular when the articles are vacuum sealed via thermoforming. Preferably, two or more absorbent articles of the plurality of absorbent articles are grouped together in a group encased by a sub-encasement within the outer encasement ; and / or wherein the absorbent article or wherein one or more of the plurality of absorbent articles is or are each individually packed in their own individual sub-encasement. Benefits of using the sub-encasements include improved stabilization and minimizing the potential for contamination, wear, or tear. Risk of damage during transportation is further reduced. The package may thus have one absorbent article or may have more than one absorbent articles such as plurality of absorbent articles. The article(s) within the outer encasement may be individually packed in a sub-encasement or may be packed together per groups of two, three, four, etc. articles within sub-encasement within outer encasement. It may also be the case that some articles within the outer encasement are packed in sub-encasement while other articles within the outer encasement are not. A particular selection or all these sub-encasements may be vacuum sealed themselves. This way, sub packages that are vacuum sealed are present within the vacuum sealed package. According to a preferred embodiment, the sub-encasement encases the plurality of absorbent articles within the outer encasement, and wherein said sub-encasement is chosen from: a strap , a bag , preferably a bag comprising one or more perforations.

[0015] Preferably, the group sub-encasement encasing the group of absorbent articles and / or the individual sub-encasement encasing an individual absorbent article is or are vacuum sealed sub-encasementsensuring an air-impermeable seal of the respective group and / or individual absorbent article within the outer encasement . By vacuum sealing one or more of the sub-encasements, one allows for easier handling of each article or group of articles within the sub-encasement. Additionally, hygiene is improved as each sub package provides an additional barrier, for example against impurities and / or contaminations. Furthermore, vacuum sealing some or all of the sub-encasements may improve stability within the outer encasement allowing for better handling of the package during transport. For example, a packaging configuration wherein some, preferably at least 30% of the absorbent articles, preferably at least 50 %, more preferably all of the absorbent articles in the outer encasement are packed in a sub-encasement, causes improved convenience, stability and easy of handling the outer package.

[0016] Preferably, the sub-encasements comprise a second film have a thickness ts; wherein thickness tsof the second film of the sub-encasements is different than the thickness t of the first film of the outer encasement. This way, one allows for a better stability within the outer encasement while maintaining an efficient use of raw materials. Additionally, one allows for a good protection of the articles within the outer encasement thereby increasing hygiene. As said before, some or all of the sub-encasements may be vacuum sealed, this way an additional stability may be created within the outer encasement. As such, undesired deformations can be avoided. The outer encasement may consist of the first film or the outer encasement may comprise the first film (Fl), e.g. as a base, and further comprises another film (F2), e.g. as a top cover sealed to the base. The sub-encasements may consist of the second film.

[0017] In an embodiment, the thickness tsof the sub-encasement is smaller than thickness t of the first film of the outer encasement, for example thickness tsis about 50 micron and thickness t is about 90 micron. By having the thickness tsof the sub-encasement smaller than the thickness t of the outer encasement, one improves the efficiency of use of materials while maintaining a good protection of each sub packaged article. Additionally, one has the benefit of articles arriving at destination with reduced risk of deficiencies that may occur during transport. Namely, by having a thicker outer encasement one ensures a good protection against rougher transport handling while the subencasements (e.g. called inner encasements) may have a reduced thickness thereby needed less material and still allowing a good sub protection of each sub packaged article thereby ensuring an improved hygiene. In another embodiment, thickness tsof the sub-encasement is larger than thickness t of the outer encasement, for example thickness tsis about 90 micron and wherein the thickness t of the outer encasement is about 50 micron. In this embodiment, the sub-encasements are held together by an outer encasement with reduced thickness which allows for a faster unpacking of the subencasements.Dimensionally stable elements

[0018] The stability of the package may be increased by providing one or more dimensionally stable elements within the outer encasement next to the encased articles. For example, one or more dimensionally stable elements may be positioned adjacent and / or in between the absorbent articles. In such embodiments the absorbent articles may be encased by one or more sub-encasements, optionally vacuum sealed sub-encasements. The dimensionally stable elements may be provided with data such as product information, brand information and / or logo, which can improve customer recognition of the absorbent articles. The provision of one or more dimensionally stable elements might also improve the appearance of the vacuum sealed package. Preferably, the package comprises a first dimensionally stable element, such as a cardboard piece or other suitable elements causing dimensional stability when the articles are sealed, within the outer encasement ; wherein the first dimensionally stable element is placed adjacent to and / or between absorbent articles of the plurality of absorbent articles. The cardboard piece may be provided with package information, e.g. the cardboard piece may be a printed piece of paper. By having the dimensionally stable elements placed within the outer encasement, undesired deformities can be avoided. More preferably, the package may further comprise a second dimensionally stable element, such as a cardboard piece, within the outer encasement ; wherein the second dimensionally stable element ( is placed adjacent to and / or in between absorbent articles of the plurality of absorbent articles. By having a second element, stability is increased, and risk of deformities is further reduced. Moreover, stacking capacity may be increased as well by the dimensional stable element(s). Preferably, the plurality of absorbent articles is positioned between the first and second dimensionally stable elements . Such positioning ensures easy stacking. In addition, the provision of dimensionally stable elements within the vacuum sealed packaged reduces formation of wrinkles in the film and thereby improves appearance of the vacuum sealed package. The first dimensionally stable element and optionally the second dimensionally stable element may be elongated elements. In this manner, a good stability within the outer encasement is ensured. Preferably, the first and second dimensionally stable elements are arranged substantially parallel to each other for improved stability.

[0019] For the dimensionally stable elements, any element to give stability is preferred. Preferably, the first dimensionally stable elements and / or the second dimensionally stable element are made from the same material and / or are chosen from the group consisting of: a foam insert or divider, a plastic insert or divider, a molded plastic insert or divider, a polypropylene or polystyrene insert or divider, a cardboard insert or divider. Preferably, the first dimensionally stable elements and / or the second dimensionally stable element are made from the same material as the outer encasement, and preferably made from the same material as the sub-encasements. Such choice of materials have manufacturing benefits and may also be beneficial considering recycling. The first dimensionallystable elements and / or the second dimensionally stable element have a thickness between 0.5 cm - 3 cm. This way, a good stability within the outer encasement may be ensured.

[0020] Material Choice

[0021] The outer encasement (and the sub-encasements if used) may be made from any suitable material or combinations of films. Preferably, the air-impermeable outer encasement comprises or is manufactured from a material chosen from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyester (PET), nylon (polyamide), ethylene vinyl alcohol (EVOH), and / or comprises a coextruded film, preferably a coextruded film in view of improved barrier performance. The outer encasement preferably comprises at least polyethylene (PE), advantageously sealing may then be improved. The encasement may be provided with printed data such as an image and / or words. Thereby, customer recognition can be improved.

[0022] Preferably, the air-impermeable outer encasement comprises a first barrier film (Fl) that forms a base ; and a second barrier film (F2) that forms a cover sealed to the base , preferably via an ultrasonic or heat seal . Surprisingly, by using a first and second barrier film the shaping of the package can be better controlled which results in an improved stacking behavior. The ultrasonic or heat seal may further provided for an efficient way of fusing the respective layers together ensuring a good closure to maintain the vacuum conditions within the package. The first barrier film (Fl) that forms a base (41) preferably has a thickness in the range of 5 - 500 micron, preferably in the range of 50 - 500 micron, more preferably in the range of 150 - 450 micron (e.g. 300 micron); and the second barrier film (F2) that forms the cover sealed to the base (41) preferably has a thickness t which is smaller than the thickness of the first film, preferably a thickness in the range of 30 - 180 micron (e.g. 90 micron). The first film (Fl), also called bottom foil or base foil, and the second film (F2), also called top foil or cover or cover foil, are preferably multi layered barrier films, preferably multi layered barrier films chosen from the group consisting of PE / PA, PP / PA, PE / EVOH, PE / EVOH / PE, or PP / EVOH / PP or combinations thereof. The second film (F2) may also be a mono film comprising PE or PP, while the first film is a multi-layered barrier film, preferably a multi layered barrier films chosen from the group consisting of PE / PA, PP / PA, PE / EVOH, PE / EVOH / PE, or PP / EVOH / PP or combinations thereof.

[0023] The first barrier film (Fl) that forms the base preferably comprises a multi layered barrier film preferably at least two, more preferably at least three layers; and wherein the second barrier film (F2) that forms the cover, such as a top cover , comprises mono or multi-layered second barrier film (F2). By using multiple films, the final shaping of the package may be improved which allows for a more desired stacking performance. Generally, first barrier film (Fl) may be formed, preferably thermoformed, to define a cavity or hollow shape in which the plurality of absorbent articles areplaced. The film may be thermoformed and shaped to have tray-shaped cavities which have a hollow shape to receive the plurality of absorbent articles.

[0024] Preferably, the multi layered barrier film (Fl) of the base has a thickness t of at least 20 micron, preferably at least 30 micron, e.g. in the range of 30 - 500 micron, such as 300 micron, and wherein the mono or multi-layered second barrier film (F2) of the top cover (42) has a thickness t’ (e.g. in the range of 30 - 500 micron, such as 90 micron) which is the same or which is smaller than the thickness t of the first barrier film (Fl). In this manner, use of raw materials can be improved. According to an embodiment, wherein the first film (Fl), e.g. as a base, of the air-impermeable outer encasement represents at least 60 %, and preferably at most 90%, of the total outer surface area of the outer encasement and wherein the outer encasement (200) further comprises a second film (F2), e.g. as a cover, having a thickness t’ which is smaller than the thickness of the first film (Fl), and preferably at least 10 micron. In this manner, packaging performance can be increase whilst ensuring an improved use of raw materials, e.g. by using the second film for the remainder of the total outer surface of the area of the outer encasement.

[0025] According to a preferred embodiment, the outer encasement comprises (a first) coextruded film, e.g. a first coextruded film (Fl) as a base, which comprises a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from polyamide (PA) or ethylene vinyl alcohol (EVOH). Advantageously, a good sealing and barrier performance could be achieved. In addition to the first coextruded film (Fl), the outer encasement may comprise another coextruded film, e.g. a second coextruded film (F2) as a top cover (or as a lid), the another coextruded film (F2) preferably comprises a first material (Ml’) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2’) chosen from polyamide (PA) or ethylene vinyl alcohol (EVOH). Preferably, the at least the first material (Ml’) of the another coextruded film (F2) corresponds to the first material (Ml) of the first coextruded film (Fl). In this manner, adhesion between the first coextruded film (Fl) and the another coextruded film (F2) can be improved due to improved compatibility.

[0026] According to a preferred embodiment, the outer encasement comprises a coextruded film, e.g. as a first coextruded film (Fl), comprising the following structure: PE / PA, PP / PA, PP / EVOH, PE / EVOH, PE / EVOH / PE, PP / EVOH / PP, PE / PA / PP. Such combinations may further improve barrier performance. The outer encasement may further comprise another film (F2) chosen from a mono layered film (e.g. PE or PP) or a coextruded film, e.g. coextruded film (F2), which is sealed to the (first) coextruded film (Fl).

[0027] According to a preferred embodiment, the outer encasement comprises a coextruded film chosen from PE / PA / PP or PE / EVOH / PP, preferably PE / PA / PP. Improved barrier performance cansurprisingly be achieved. In this embodiment, it is preferred that the PE is arranged as an outer layer of the coextruded film which faces the absorbent article(s) and / or which faces another outer layer of another coextruded film (F2), in particular at the location of the sealing (43) such that the layers can be fused together in an improved manner. To be clear, as used herein, PE stands for polyethylene, PP stands for polypropylene (PP), PVC stands for polyvinyl chloride, PET stands for polyethylene terephthalate, PA represents polyamide and EVOH strands for ethylene vinyl alcohol.

[0028] According to a preferred embodiment, the outer encasement comprises a first film (Fl) having a thickness t ranging between 5 - 500 micron which comprises a coextruded film (Fl) comprising PP / EVOH / PE or PP / PA / PE wherein the EVOH or the PA are arranged as a middle layer while the PP or PE are arranged as outer layers for improved sealing capacity. A second film (Fl) having a thickness t’ ranging between 5 - 500 micron may be further included, said second film (F2) comprising a coextruded film (F2) of with the outer layers correspond with the outer layers of the coextruded film (Fl) of the first film. In this manner, compatibility is improved which improves adhesion which results in improved maintenance of the vacuum.

[0029] Preferably, the outer encasement and the sub-encasements (if present) are made from the same material and / or have the same density as this can be beneficial considering recycling. The outer encasement may be sealed by any suitable means, preferably the outer encasement is heat sealed. The preference for heat sealing results as the means to seal the outer encasement in the invention ensures a secure, tamper-resistant, cost-effective, versatile, efficient, and aesthetically pleasing packaging seal.

[0030] According to a preferred aspect (which may have any of the features as described above), there is provided a vacuum sealed package containing plurality of absorbent articles chosen from diapers, sanitary napkins, and adult incontinence products, absorbent hygiene products, or combinations thereof, said package comprising an air-impermeable outer encasement encasing the plurality of absorbent articles; wherein the outer encasement is vacuum sealed such that the plurality of absorbent articles are held in the outer encasement in a compressed manner; wherein the air-impermeable outer encasement comprises a first film (Fl), e.g. as a base, having a thickness t ranging between 5 - 500 micron. Preferably between 15 - 500 micron, by ensuring at least 15 micron, strenght and durability may be improved, even more so at least 17 micron may be ensured to further ensure strenght and durability, and improved maintenance of the vacuum (thus ensuring logistical gains in a prolonged manner). A second film (F2), e.g. as a cover, may be further provided. The first film preferably forms the base, more in particular a tray-shaped base, preferably a thermoformed tray-shaped base, with a bottom wall and raised sidewalls surrounding the absorbent articles, and wherein the second film (F2) is placed as a cover forming a top wall of the package. In this manner, a package with a smootherouter surface (less wrinkle) can be provided. Further, the outer encasement can be provided with a more efficient use of raw material.

[0031] Preferably, the first film (Fl) that forms a base (41), in particular a tray-shaped base, e.g. as formed out of thermoformed bottom film; and the second film that forms a cover sealed to the base, e.g. as formed out of a top film. Preferably, the first film (Fl) that forms the base (41) comprises multi layered barrier film; and the second film (F2) that forms the cover (42) comprises mono or multilayered second barrier film (F2). The second film may have less layers than the first film, in this manner use of raw material may be further optimized.

[0032] According to an embodiment, the multi layered film (Fl) of the base, in particular the tray-shaped base, has a thickness t of at least 20 micron, preferably at least 30 micron, e.g. in the range of 30 -500 micron such as 300 micron, and wherein the mono or multi-layered second film (F2) of the cover (42) has a thickness t’ which is the same or which is smaller than the thickness t of the first barrier film (Fl), e.g. 90 micron.

[0033] According to an embodiment, wherein the package extends along x , y , z dimensions; the package comprising a top wall (51) and bottom wall (52), e.g. as comprises by the in particular the tray-shaped base, extending substantially parallel to each other and parallel to the x y plane, thereby defining a width and a length of the package; wherein the top wall (e.g. as formed by the second film) and bottom wall (e.g. the bottom of the tray-shaped base) are connected via one or more sidewalls (e.g. as formed via the thermoforming of the first film) which extend in the z direction thereby defining a height of the article; wherein the height is smaller than the width and / or the length; wherein the plurality of absorbent articles each comprise an absorbent core folded to have at least one C shape with a first and second leg, whereby the legs of each C shape are arranged substantially parallel to the top and bottom wall.

[0034] According to an embodiment, wherein the first film (Fl), e.g. forming the tray-shaped base, has a thickness in the range of 30 - 450 micron and wherein the second film (F2), e.g. forming a cover on the tray-shaped base, has a thickness in the range of 30-450 micron, preferably wherein the thickness of the second film (F2) is smaller.

[0035] According to an embodiment, the first film (Fl) forms a tray-shaped base with a bottom wall and raised sidewalls surrounding the absorbent articles, and wherein the second film (F2) is placed as a cover forming a top wall of the package.

[0036] Absorbent Articles

[0037] The plurality of absorbent articles may comprise 2, 3, 4 or more articles and / or may comprise up to 20, 40 or even more absorbent articles. Preferably, the plurality of absorbent article comprises at least 6 absorbent articles. Generally, the absorbent article comprises or the articles within the plurality ofabsorbent articles each comprise a liquid pervious topsheet, a liquid impervious backsheet. Absorbent material, preferably in the form of an absorbent core, is positioned between the liquid pervious topsheet and the liquid impervious backsheet. Preferably, a bottom layer is placed between the absorbent material and the liquid impervious backsheet. The absorbent material comprises superabsorbent particles (SAP) and cellulosic fluff pulp and is arranged such that one or more channels are formed, wherein less absorbent material per surface area is present in the one or more channels compared to an area around the one or more channels. Preferably substantially no absorbent material is present in the one or more channels. It is particularly advantageous that the bottom layer is in contact with the absorbent material and has an average density as measured in a decompressed state between 20 and 400 kg / m3. The decompressed state is understood as the state before the articles are compressed and vacuum sealed or as measured after the articles are unpacked from the vacuum seal and are left for a day decompressing. The bottom layer, in addition to being in contact with the absorbent material and having an average density between 20 and 400 kg / m3, is designed to provide a soft and cloudy texture, enhancing user comfort and creating a pleasant tactile experience when the article is worn. Preferably, average density as measured in a decompressed state is between 20 and 300 kg / m3, more preferably between 20 and 250 kg / m3, even more preferably between 20 and 200 kg / m3, e.g. between 20 and 120 kg / m3. Preferably, an amount of cellulosic fluff pulp in the absorbent material is, as measured in decompressed state, below 250 g / m2, preferably below 200 g / m2, more preferably below 180 g / m2, even more preferably below 160 g / m2, e.g. between 70 g / m2 and 180 g / m2 or between 80 g / m2 and 170 g / m2. Because of the presence of the bottom layer, less cellulosic fluff pulp is needed. A low amount of cellulosic fluff pulp in combination with a bottom layer with an open structure provides a relatively soft and flexible absorbent article. The absorbent article may further be provided with a capillary acceleration sheet between the absorbent material and the liquid pervious topsheet, wherein the capillary acceleration sheet has a basis weight, as measured in a decompressed state, between 15 and 55 g / m2 and comprises fibers having an average diameter between 10 and 35 micron, preferably between 15 and 30 micron, more preferably between 17 and 27 micron.

[0038] The absorbent articles to be packed may be chosen from chosen from feminine hygiene garments, baby diapers and pants, adult incontinence garments. Generally applicable, the absorbent articles are chosen from diapers, sanitary napkins, and adult incontinence products, absorbent hygiene products, or combinations thereof.

[0039] Arranging the absorbent core

[0040] The package is preferably extending along x , y , z dimensions, the package comprising a top wall and bottom wall, which may comprise the first and second barrier films (Fl, F2) as described herein.The top and bottom wall are preferably parallel to each other and parallel to the x y plane, thereby defining a width and a length of the package; wherein the top wall (51 and bottom wall are connected via one or more sidewalls which extend in the z direction thereby defining a height of the article; wherein the height is smaller than the width and / or the length; wherein the plurality of absorbent articles each comprise an absorbent core folded such that such that the absorbent cores are folded to have at least one C shape with a first and second leg , whereby the legs of each C shape are arranged substantially parallel to the top and bottom wall. Surprisingly, a more uniform shape can be achieved which benefits stacking performance and thereby improves transport. The top wall may comprise, the second barrier film (F2) as described herein.

[0041] Assembly for transporting absorbent articles

[0042] According to a further aspect, there is provided an assembly. In particular, an assembly for transporting absorbent articles, said assembly comprising a container, such as a box or a bag, and one or more vacuum sealed packages containing absorbent articles, wherein said container is holding a plurality of vacuum sealed packages having one or more features as defined herein. The plurality of the packages are preferably arranged directly adjacently to each other within the container, and are preferably stacked one above the other and / or arranged next to each other. In particular, when one or more dimensionally stable elements are provided as explained earlier, such stacking and / or arrangement can be improved as the packages can be arranged in a more orderly fashion. The assembly is preferably configured for transport, wherein the container is preferably a stackable box. For example, the assembly may consist of a stackable box with multiple vacuum-sealed packages of absorbent articles neatly arranged inside. The packages can be placed in rows and columns, maximizing the use of available space within the container. This arrangement ensures stability during transport and allows for easy handling and storage.

[0043] A method for packaging and preferably subsequently transporting

[0044] According to a further aspect, there is provided a method. In particular, a method for packaging and preferably subsequently transporting an absorbent article or a plurality of absorbent articles, such as one or more diapers, the method comprising the steps of:

[0045] - encasing the absorbent article or the plurality of absorbent articles in an air-impermeable outer encasement ;

[0046] - vacuum sealing the air-impermeable outer encasement such that the absorbent article or the plurality of absorbent articles is or are held in the outer encasement in a compressed manner;

[0047] - preferably, transporting the absorbent article or the plurality of absorbent articles while being compressed in the outer encasement; the absorbent article or a plurality of absorbent articles arepreferably chosen from diapers, sanitary napkins, and adult incontinence products, absorbent hygiene products, or combinations thereof. Any corresponding element as mentioned in the context of the method may have one or more features and benefits of the corresponding element as mentioned in context of package and / or assembly as explained herein (e.g. as related to the air-impermeable outer encasement comprising the first film and preferably the second film).

[0048] The absorbent article or the plurality of absorbent articles in an uncompressed state may take up a total volume VI. Preferably, the step of vacuum sealing comprises: - reducing the total volume VI of the plurality of absorbent articles by a factor of 1.1, preferably by a factor of 1.2, more preferably by a factor of 1.4. By doing so, one significantly reduces the space they occupy, allowing for more efficient storage, transportation, and utilization of available resources. Preferably, the air-impermeable outer encasement is made from a film having a thickness t ranging between 5 - 500 micron, preferably 10 - 300 micron, more preferably 30- 150 micron, such as 90 micron. By having a thickness t ranging as stated, the barrier functionality is ensured, and breaches can be avoided. Highly preferably, to further enhance the barrier functionality, the film used has a thickness of more than 15 micron, preferably at least 17 micron.

[0049] Preferably, the encasing comprises:

[0050] - placing the plurality of absorbent articles on a first film (Fl);

[0051] - providing a second film (F2) and sealing the second film to the first film, e.g. via a seal , to encase the plurality of absorbent articles.

[0052] Preferably, wherein the first film (Fl) has a thickness in the range of 30 - 450 micron (e.g. 300 micron) and wherein the second film (F2) has a thickness in the range of 30 - 450 micron (e.g. 90 micron), preferably wherein the thickness of the first film (F2) is smaller than the thickness of the second film (F2). By choosing a smaller thickness for the first film’s thickness, the use of raw material can be optimized whilst the second film may ensure strength as desired. Any form of sealing may be used which established a vacuum seal. Advantageously, by using a first and second film, the shape of the package obtained after vacuum sealing can be improved which allows for an improved stacking behavior of the package obtained. The first and / or second film may be arranged as a coating on a paper substrate.

[0053] Preferably, the first film (Fl) is pre-shaped into tray-shaped cavities, and wherein the first film is provided in machine direction, and wherein at least two tray-shaped cavities are provided along crossmachine direction

[0054] Preferably, the plurality of absorbent articles are folded to have a C shape whereby the plurality of absorbent articles are placed such that the legs of the C shape are parallel to the first film (Fl) on which the articles are placed, in particular parallel to the portion on which the articles are placed. Surprisingly, it was found that packing behavior could be improved significantly by arranging theabsorbent core according to the C shapes as described herein. Understandably, the plurality of absorbent articles can be folded in various ways, e.g. an article can be folded in half (one folding line, e.g. a v-fold) or an article can be folded having e.g. two folding lines (tri-fold, e.g. an e-fold or z-fold). In each of these folds, a C shape is present and surprisingly, by having the legs arranged parallel to first film (Fl) on which the articles are placed, packing behavior could be improved significantly. Preferably, the method further comprises: - including a first dimensionally stable element, and optionally a second dimensionally stable element, within the air-impermeable outer encasement . By including the dimensionally stable element one can have one or more of the benefits as explained herein. By including stable elements, some guidance is given during the vacuum sealing. As a result, the vacuum sealed package shows less undesired deformities. More preferably, the first, and optionally the second, dimensionally stable element is being arranged adjacent to the absorbent article or the plurality of absorbent articles ; and / or is being arranged between absorbent articles of the plurality of absorbent articles. Preferably, the plurality of absorbent articles are ordered in a row and wherein the first and second dimensionally stable elements are positioned at the beginning and at the end of the row. This way, improved stacking can be provided. Namely, by having the stable elements arranged at the ends, an improved vacuum sealed package is achieved since the stable element guide the vacuum sealing such that a neat and flat resulting package is achieved as compared over a package with a wrinkly surface.

[0055] Preferably, the method is performed by aid of a vacuum packaging machine comprising one or more vacuum chambers, e.g. a single vacuum chamber or at least two vacuum chambers arranged on a rotating carousel. In this manner, vacuum sealed packages with the absorbent articles as described herein can be produced with a highly beneficial outcome. More preferably, wherein the vacuum packaging machine is chosen from a thermoforming vacuum packaging machine that comprises a thermoforming station, and wherein the method comprises using the thermoforming station for preshaping the first film before vacuum sealing the air-impermeable outer encasement, preferably for pre-shaping the first film to form tray-shaped cavities. The thermoforming station may be used to improve the shape of the final package as desired, e.g. to improve the stacking ability or smoothness. According to a preferred embodiment, the method comprises:

[0056] - placing the plurality of absorbent articles on a first film (Fl), e.g. from a bottom film; - providing the second film (F2), e.g. from a top film, and sealing the second film to the first film, e.g. via a seal, to encase the plurality of absorbent articles. In this manner, a highly desired shape can be achieved which benefits logistical use of the packages and may improve consumer response, e.g. due to product recognition as a result of a more smoother vacuum package. The first film may be formed from a bottom film supplied by a bottom film supply roll. Likewise, the second film may be formed from a top film supplied by a top film supply roll.Preferably, the first film (Fl) is pre-shaped via thermoforming before the plurality of absorbent articles are placed. In doing so, a smoother, less wrinkly package may be achieved which promotes consumer response and / or stacking performance of the package. More in particular, it is desired that the first film (Fl) is pre-shaped into tray-shaped cavities. Herein, a "tray-shaped" typically refers to having a recessed area or indentation within a structure that resembles the shape of a tray. Typically, a cavity is characterized by having a bottom surface (or also called bottom wall) and side walls that extend upward from the bottom surface, creating a space (e.g. a hollow space) that can hold or contain the absorbent articles. The tray-shaped cavity may be designed to facilitate the transportation of the absorbent articles, and its dimensions and configuration can vary depending on the intended application or use within the invention.

[0057] Preferably, the first film (Fl) is pre-shaped into tray-shaped cavities; wherein the first film is provided in machine direction, and wherein at least two tray-shaped cavities are provided along cross-machine direction, e.g. at least two tray-shaped cavities can be provided in cross-machine direction at once, or one right next to each other. Surprisingly, it was found that product efficiency could be increased significantly.

[0058] Preferably, the first film (Fl) is pre-shaped into tray-shaped cavities such that at least two tray-shaped cavities are created at once, more preferably at least three tray-shaped cavities are created at once, most preferably at least four tray-shaped cavities are created at once. The tray-shaped cavities can be created by using a suitable mold.

[0059] Preferably, the first film (Fl) is pre-shaped via thermoforming before the plurality of absorbent articles are placed; wherein the first film (Fl) is pre-shaped into a tray-shaped cavity, and wherein the plurality of absorbent articles are encased within a sub-encasement, such as a bag or a strap, whereafter said sub-encasement encasing the plurality of absorbent articles is placed into the tray shaped cavity, whereafter the second film is provided and whereafter the vacuum sealing is performed. By using the sub-encasement before vacuum sealing, production can be improved since risk of defects can be reduced, in particular because the plurality of absorbent articles can be better handled before placing the articles into the pre-shaped cavity. Testing has further shown that is beneficial to contain the absorbent articles into the sub-encasement as risk of improper sealing with the second film (F2) can be reduced as a result of using the sub-encasement that contains and handles the plurality of absorbent articles.

[0060] Preferably, wherein the plurality of absorbent articles are folded to have a C shape having at least a first and second leg, whereby the plurality of absorbent articles are placed such that the legs are parallel to the first film (Fl) on which the articles are placed. It is recommended herein that the plurality of absorbent articles are placed the parallel to a bottom (i.e. also called bottom surface orbottom wall) of a tray shaped-cavity in which the absorbent articles are placed. By placing the C shapes in this manner, the stacking behavior of the package can be improved significantly.

[0061] According to an embodiment, the method comprises a plurality of steps, e.g. as the executed by aid of a thermoforming packaging machine, wherein said plurality of steps comprise:

[0062] (a) optionally, feeding a bottom film to form the first film into a thermoforming station; (b) thermoforming said bottom film into tray-shaped cavities;

[0063] (c) depositing a plurality of absorbent articles into the tray-shaped cavities to obtain filled tray-shaped cavities in which absorbent articles are deposited ;

[0064] (d) feeding a top film (F2a), e.g. from a supply roll, to form the second film (F2) above the filled tray-shaped cavities;

[0065] (e) sealing said top film (F2a) as the second film (F2) to the tray-shaped cavities comprising the bottom film (Fla) and evacuating air from the tray-shaped cavities, such that the absorbent articles are held in a compressed manner, e.g. by aid of a vacuum chamber; (f) cutting into individual packages to obtain individual packages wherein absorbent articles are held in a compressed manner ; and

[0066] (g) optionally discharging finished packages for further handling

[0067] In step (b), it is preferred that at least two, preferably at least three, even more preferably at least four tray-shaped cavities are thermoformed at once to improve production time.

[0068] The bottom film (Fla), e.g. as supplied via first supply roll, preferably has a thickness in the range of 20 - 500 micron, e.g. 300 micron. In this way, package performance can be increase, e.g. improved protection of the absorbent article. The top film (Fla) may have a smaller thickness than the bottom film (Fla), in this manner, use of raw material can be improved, which is beneficial as seen from an eco-standpoint. Preferably, the top film (Fla), e.g. as supplied from a supply roll, has a thickness in the range of 5 - 500 micron, preferably 10 - 300 micron, more preferably 30 - 180 micron, e.g. 90 micron.

[0069] Preferably, the top film (F2a) and bottom film (Fla) are chosen from a coextruded film chosen from one of the following: PE / PA, PP / PA, PE / EVOH, PE / EVOH / PE, PP / EVOH / PP, PE / PA / PP or PE / PA / PE, preferably a coextruded film chosen from PE / PA / PP or PE / EVOH / PP, preferably PE / PA / PP. In this manner, a desired vacuum packaging performance can be achieved. Furthermore, the combinations are favored due to their specific properties, such as barrier characteristics and mechanical strength.

[0070] Preferably, the top film (F2a) and bottom film (Fla) are chosen from chosen such that at least one thermoplastic polymer, e.g. PE or PP, of the top film corresponds to a thermoplastic polymer, e.g. PEor PP, of the bottom film, and wherein the method comprises sealing the corresponding thermoplastic polymers, e.g. PE to PE or PP to PP, together. The method, in this manner, involves sealing corresponding thermoplastic polymers together. This implies that if the top film contains PE, the bottom film should also contain PE, and similarly, if the top film contains PP, the bottom film should also contain PP. This approach ensures compatibility and improves adhesion between the films.

[0071] A finger lift feature may be provided in any suitable manner, for example by ensuring that a seal is located at a distance of an outer free edge leaving a non-sealed area between the outer free edge and the seal. In addition, or as an alternative, a non-thermoplastic substrate may be arranged to be engaged by a user to facilitate opening of the package.

[0072] In case of the thermoformed tray-shaped cavities, it is preferred that the tray-shaped cavities are shaped to comprise a bottom wall and sidewalls, wherein the absorbent articles each comprise an absorbent core, typically arranged between a topsheet and a bottom sheet, the core being folded to have at least one C shape with a first and second leg; wherein the method comprises: depositing the absorbent articles into the tray-shaped whereby the legs of each C shape are arranged substantially parallel to the bottom wall. By depositing the articles as such, improved packaging and stacking performance can be achieved. Additionally, it was found that wrinkles could be reduced which can benefit consumer recognition.

[0073] In principle, any suitable vacuum packaging machine may be used. According to an embodiment, the method is performed by aid of a vacuum packaging machine comprising one or more vacuum chambers, e.g. a single vacuum chamber or at least two vacuum chambers arranged on a rotating carousel. According to an embodiment, the one or more vacuum chambers include a plurality of vacuum chambers that are arranged on a carousel. In this manner, the production efficiency can be improved (e.g. more packages can be produced or vacuum sealed in a shorter amount of time). According to this embodiment, the method preferably comprises the steps of:

[0074] providing a plurality of absorbent articles loaded into non sealed bags (which typically forms the outer encasement of the final package) comprising the first film to obtain loaded nonsealed bags;

[0075] placing the loaded non-sealed bags into the vacuum chambers of the carousel;

[0076] sealing the loaded non-sealed bags to obtain sealed loaded bags, said sealing by aid of the vacuum chambers arranged on the carousel while the carousel continues to rotate; discharging the sealed loaded bags from the rotating carousel so as to obtain packages with an air-impermeable outer encasement that hold a plurality of absorbent articles in a compressed manner.The method may be performed, according to a preferred embodiment, such that the thickness t of the first film is in the range of 17 - 500 micron, preferably 20 - 350 micron, preferably 25 - 350 micron as measured from the obtained package, and wherein the first film comprises a material chosen from the group consisting of: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH) or combinations thereof, preferably at least polyethylene (PE), polypropylene in combination with polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH). Research and inventive insights have provided that by carefully choosing the material and thickness of the outer package, that a product protection can be achieved (e.g. by ensuring at least 17 micron, even more so preferably at least 20 micron) with an efficient use of raw material (e.g. due to lower microns, e.g. at most 500 micron). In particular, by selecting polyethylene (PE), polypropylene in combination with at least any one of polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH), a desired thermoplastic sealing behavior can be achieved while improving durability (and maintaining vacuum) within the package. In this manner, the logistical gain and associated benefits of holding the articles in the compressed manner can be improved.

[0077] Further insights during research have shown that it is preferred that the vacuum sealing the air-impermeable outer encasement comprises evacuating air until an internal pressure within the an air-impermeable outer encasement reaches a pressure within the range of 50 mbar to 550 mbar. In this manner, logistical gain can be achieved while ensuring final product performance (e.g. after unpacking). Notably, mbar stands for millibar. By ensuring a lower end point of 50 mbar, the articles can be packed in an improved manner (e.g. avoiding undesired interaction between SAP particles and a film of the outer encasement) and without the need of complex machinery. Further testing has also shown that these benefits within are even more significant the range of 70 mbar to 300 mbar, such as 100 mbar or 250 mbar.

[0078] Preferably, the step of vacuum sealing comprises the pressing of the absorbent article or the pressing of the plurality of absorbent articles between a first dimensionally stable element, and a second dimensionally stable element. By pressing the absorbent articles between the elements, one achieves a package with less wrinkles which result in improved stacking performance and additionally, the package may also be more appealing to customers.

[0079] Alternatively, or in addition, the step of vacuum sealing comprises pressing of the absorbent article or pressing of the plurality of absorbent articles between a first guiding plate and a second guiding plate positioned outside of the outer encasement. In this manner a final shape of the vacuum sealed package can be controlled without the need of dimensionally stable elements within the outer encasement. The guiding plates can have any suitable shape. Preferably, guiding plates have a shape corresponding to the surface area of a folded absorbent article as seen from a side view.Preferably the first and second guiding plates are positioned at opposite sides of the outer encasement, respectively, and are moved towards each other prior to and / or during the step of vacuum sealing. This results in a vacuum sealed package with a predetermined shape. It is clear to the skilled person that more than two guiding plates can be provided, wherein the guiding plates are preferably provided in pairs with each guiding plate from one pair being positioned at an opposite side of the other guiding plate from the same pair. The guiding plates can have any suitable shape. Preferably, guiding plates have a shape corresponding to the surface area of a folded absorbent article as seen from a side view. Indeed, any one of the features described above in connection with package (product) are also applicable for embodiments of the method. Furthermore, any one of the features mentioned above and below can be combined unless explicitly stated otherwise.

[0080] The choice of materials and / or the layered structure for the air-impermeable outer encasement shall now further be described (applicable to the product and method). Preferably, the first film of the air-impermeable outer encasement has a thickness t of at least 17 micron, preferably at least 20 micron, even more preferably at least 25 micron. Advantageously, air and / or moisture barrier effects may be further improved. Such improvement is highly beneficial, in particular when working with absorbent articles chosen from the group consisting of: feminine hygiene garments, baby diapers and pants, adult incontinence garments.

[0081] Preferably, wherein the air-impermeable outer encasement is manufactured from a material chosen from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), nylon (polyamide) (PA), ethylene vinyl alcohol (EVOH) or combinations thereof and / or a coextruded film. By carefully choosing the materials, air and / or moisture barrier effects may be further improved. The coextruded film may be made by melting multiple different polymers (e.g. as described herein) simultaneously and combining them into a single film (e.g. the first film of the outer encasement and / or a second film used for the sub encasements) during the extrusion process. The coextrusion can thus be used to make multi-layer films. Preferably, the first film of the air-impermeable outer encasement is manufactured from a coextruded film. In this manner, by including multiple materials, the barrier properties (e.g. gas / air barrier, strength and durability) of the respective film can be enhanced. By using thinner, targeted layers instead of one thick homogeneous layer, multi-layer films provide the same or better performance with reduced material use, making them cost-effective and resource-efficient. Preferably, the coextruded film comprises a first material chosen from polyethylene (PE) or polypropylene (PP) and a second material chosen from polyamide (PA) or ethylene vinyl alcohol (EVOH).

[0082] Preferably, the air-impermeable outer encasement comprises a coextruded film chosen from one of the following combinations PE / PA, PP / PA, PE / EVOH, PE / EVOH / PE, or PP / EVOH / PP. It isunderstandable, that the abbreviations stand for the polymers as described herein, in particular, the abbreviations are used as follows:

[0083]

[0084] The I indicates separate layers. Placing PE or PP on as an outer layer of the film may enhance sealing properties. Using PA or EVOH may improve effects such as durability, gas / moisture barrier effects. Preferably, the air-impermeable outer encasement comprises a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from polyamide (PA) or ethylene vinyl alcohol (EVOH). Such combination is highly advantageous because of the improved sealing and durability properties. Desired barrier effects can be further enhanced by ensuring that the air-impermeable outer encasement has a thickness of at least 20 micron and at most 350 micron. In this manner, surprisingly, desired barrier effects and absorbent article containment can be achieved with an efficient use of raw materials.

[0085] According to an embodiment, the thickness t of the first film is in the range of 20 - 350 micron and wherein the first film comprises a material chosen from the group consisting of: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH) or combinations thereof and / or manufactured from a coextruded film.

[0086] Generally, applicable herein, the coextruded film can be formed from a combination of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH).

[0087] Generally preferred, the coextruded film can be formed from polyethylene (PE) or polypropylene (PP) (e.g. as a first material Ml) in combination with polyamide (PA), ethylene vinyl alcohol (EVOH) (e.g. as a second material M2).

[0088] According to an embodiment, the air-impermeable outer encasement comprises a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from polyamide (PA). The thickness may be of at least 20 micron and at most 350 micron. Advantageously, a desired barrier performance could be achieved.

[0089] According to an embodiment, the air-impermeable outer encasement may further include a metal (M), preferably aluminium (Alu). More in particular, the first film comprises in addition to said metal(M), a polymer (P), preferably wherein said polymer is chosen form the group consisting of: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH). Advantageously, adding a metal, preferably aluminum, preferably in a multi-layer films, can significantly increase barrier properties, durability, and protection from light, moisture, and odors.

[0090] According to an embodiment, the air-impermeable outer encasement comprises a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from ethylene vinyl alcohol (EVOH). The thickness may be of at least 20 micron and at most 350 micron. Advantageously, a desired barrier performance could be achieved.

[0091] According to an embodiment, the impermeable outer encasement is mono barrier film (e.g. comprising the first film only) or is a multi-layered barrier film (e.g. the first film includes multiple layers). Preferably, the first film of the air-impermeable outer encasement is a multi-layered barrier film. By including multiple layers, enhanced barrier effects can be achieved. More preferably, the multi-layered barrier film includes at least a first layer chosen from polyethylene (PE), polypropylene (PP) in combination with a second layer chosen from polyamide (PA), ethylene vinyl alcohol (EVOH). Surprisingly, such multi-layered barrier film is highly beneficial in view of barrier, durability, flexibility and sealing properties.

[0092] According to an embodiment, the first film comprises at least polyethylene (PE), and / or polypropylene (PP) and further comprises polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH) and / or the second film comprises at least polyethylene (PE), and / or polypropylene (PP) and further comprises polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH). According to this embodiment, is preferred that both the first film and the second film comprise at least PE or both the first film and the second film comprise at least PP.

[0093] According to an embodiment, the first film of the air-impermeable outer encasement is a two or three layered barrier film. In this manner, surprisingly, desired barrier effects can be further improved, in particular in a manner with efficient use of raw material. According to an embodiment, the air-impermeable outer encasement comprises a multi-layered barrier film and wherein at least one of the sub encasement(s) is a single-layered barrier film. In this manner, vacuum holding performance can be improved by the outer encasements while the sub encasements can be provided with less materials. In this manner, an overall improved performance can be achieved with an efficient use of raw materials.The following clauses describe various aspects and embodiments and are part of the present disclosure.

[0094] 1. A vacuum sealed package (1) containing an absorbent article (100a) or a plurality of absorbent articles (100), such as one or more diapers, preferably aplurality of absorbent articles (100) chosen from feminine hygiene garments, baby diapers and pants, adult incontinence garments said package comprising an air-impermeable outer encasement (200) encasing the absorbent article (100a) or the plurality of absorbent articles (100) wherein the outer encasement (200) is vacuum sealed such that the absorbent article or the plurality of absorbent articles (100) is or are held in the outer encasement (200) in a compressed manner; the air-impermeable outer encasement (200) comprises a first film (Fl) having a thickness t ranging between 5 - 500 micron, preferably at least 17 micron, and optionally a second film (F2).

[0095] 2. The package according to the previous clause,

[0096] wherein two or more absorbent articles of the plurality of absorbent articles (100) are grouped together in a group (102) encased by a group sub-encasement (221) within the outer encasement (200);

[0097] and / or

[0098] wherein the absorbent article (100a) or wherein one or more of the plurality of absorbent articles (100) is or are each individually packed in an individual sub-encasement (220).

[0099] 3. The package according to the previous clauses, wherein

[0100] the group sub-encasement (220) encasing the group (102) of absorbent articles and / or wherein the individual sub-encasement (221) encasing an individual absorbent article (100a) is or are vacuum sealed sub-encasements (220a, 221a) ensuring an air-impermeable seal of the respective group and / or individual absorbent article within the outer encasement (200).

[0101] 4. The package according to any one of the previous clauses,

[0102] wherein the sub-encasements (220) are made from a second film have a thickness ts; wherein thickness ts of the second film of the sub-encasements is different than the thickness t of the first film of the outer encasement.

[0103] 5. The package of the previous clause,

[0104] wherein thickness ts is smaller than thickness t.6. The package according to clause 4, wherein thickness ts is larger than thickness t, for example wherein thickness ts is about 90 micron and wherein the thickness t of the outer encasement is about 50 micron.

[0105] 7. The package according to clause 3 and any one of the previous clauses, wherein one or more of the sub-encasements (220, 221) are made from a material chosen from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polyamide (PA), ethylene vinyl alcohol (EVOH) or combinations thereof and / or a coextruded film.

[0106] 8. The package of the previous clause, 2

[0107] wherein the coextruded film comprises a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from polyamide (PA) or ethylene vinyl alcohol (EVOH).

[0108] 9. The package of the previous clause,

[0109] wherein the coextruded film has a thickness in the range of 15 - 250 micron, preferably in the range of 30- 120 micron, such as about 85 micron.

[0110] 10. The package according to any one of the previous clauses, wherein the first film (Fl) of the air-impermeable outer encasement (200) has a thickness t of at least 17 micron, preferably at least 20 micron, even more preferably at least 25 micron.

[0111] 11. The package according to the previous clause, wherein the first film (Fl) of the air-impermeable outer encasement (200) represents at least 60 % of the total outer surface area of the outer encasement (200) and wherein the outer encasement (200) further comprises a second film (F2) having a thickness which is smaller than the thickness of the first film, and preferably at least 10 micron, even more preferably at least 15 micron, such as 90 micron.

[0112] 12. The package according to any one of the previous clauses, wherein the first film exhibits an oxygen transmission rate (OTR) of less than 1 cc / m2 / day and a moisture vapor transmission rate (MVTR) of less than 0.5 g / m2 / day at 23°C and 50% relative humidity.

[0113] 13. The package according to any one of the previous clauses, further comprisinga first dimensionally stable element (300a), such as a cardboard piece, within the outer encasement (200); wherein the first dimensionally stable element is placed adjacent to and / or between absorbent articles of the plurality of absorbent articles (100).

[0114] 14. The package of the previous clause, further comprising

[0115] a second dimensionally stable element (300), such as a cardboard piece, within the outer encasement (200); wherein the second dimensionally stable element (300b) is placed adjacent to and / or in between absorbent articles of the plurality of absorbent articles (100).

[0116] 15. The package of the previous clause,

[0117] wherein the plurality of absorbent articles is positioned between the first and second dimensionally stable elements (300a, 300b).

[0118] 16. The package of any one of the previous two clauses,

[0119] wherein the first dimensionally stable element (300a) and optionally the second dimensionally stable element (300b) are elongated elements.

[0120] 17. The package according to any one of the previous clauses,

[0121] wherein the first and second dimensionally stable elements (300a, 300b) are arranged substantially parallel to each other.

[0122] 18. The package according to any one of the previous clauses,

[0123] wherein at least one of the first or second dimensionally stable element (300a, 300b) is visibly arranged within the outer encasement and is provided with data, such as a printed image and / or printed letters.

[0124] 19. The package according to any one of the previous clauses,

[0125] wherein the first dimensionally stable elements (300a) and / or the second dimensionally stable element (300b) are made from the same material and / or are chosen from the group consisting of: a foam insert or divider, a plastic insert or divider, a molded plastic insert or divider, a polypropylene or polystyrene insert or divider.

[0126] 20. The package according to any one of the previous clauses,wherein the first dimensionally stable elements (300a) and / or the second dimensionally stable element (300b) are made from the same material as the outer encasement (200), and preferably made from the same material as the sub-encasements (220, 221, 220a, 221a).

[0127] 21. The package of the previous clause,

[0128] wherein the first dimensionally stable elements (300a) and / or the second dimensionally stable element (300b) have a thickness between 0.5 cm - 3 cm.

[0129] 22. The package according to any one of the previous clauses, wherein at least one, preferably each of the absorbent articles comprises an absorbent core (1000).

[0130] 23. The package of the previous clause,

[0131] wherein the absorbent core (1000) is positioned between a liquid pervious topsheet (3000) and a liquid impervious backsheet (2000).

[0132] 24. The package of any one of the previous two clauses,

[0133] wherein the absorbent core (1000) comprises fluff and / or SAP.

[0134] 25. The package of any one of the previous three clauses, wherein the package extends along x , y , z dimensions; the package comprising a top wall (51) and bottom wall (52) extending substantially parallel to each other and parallel to the x y plane, thereby defining a width and a length of the package; wherein the top wall (51) and bottom wall (52) are connected via one or more sidewalls (53) which extend in the z direction thereby defining a height of the article; wherein the height is smaller than the width and / or the length; wherein the plurality of absorbent articles (100) each comprise an absorbent core (1000) folded to have at least one C shape (60) with a first and second leg (61, 62), whereby the legs of each C shape are arranged substantially parallel to the top and bottom wall (51, 52).

[0135] 26. The package according to any one of the previous clauses,

[0136] wherein the absorbent article (100a) or the plurality of absorbent articles (100) is / are chosen from diaper(s), sanitary napkin(s), and adult incontinence product(s), absorbent hygiene product(s).

[0137] 27. The package according to any one of the previous clauses,

[0138] wherein the absorbent article (100a) or plurality of absorbent articles (100) are chosen from the group consisting of: feminine hygiene garments, baby diapers and pants, adult incontinence garments.28. The package according to any one of the previous clauses,

[0139] wherein the air-impermeable outer encasement (200) comprises a material chosen from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), nylon (polyamide) (PA), ethylene vinyl alcohol (EVOH) or combinations thereof and / or a coextruded film.

[0140] 29. The package according to any one of the previous clauses,

[0141] wherein the first film of the air-impermeable outer encasement (200) comprises a coextruded film.

[0142] 30. The package of the previous clause,

[0143] wherein the coextruded film comprises a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from polyamide (PA) or ethylene vinyl alcohol (EVOH), preferably wherein the first material (Ml) is arranged as an outer layer of said coextruded film.

[0144] 31. The package of the previous clause,

[0145] wherein the air-impermeable outer encasement (200) comprises a coextruded film chosen from one of the following: PE / PA, PP / PA, PE / EVOH, PE / EVOH / PE, PP / EVOH / PP, PE / PA / PP or PE / PA / PE.

[0146] 32. The package according to any one of the previous clauses, wherein the air-impermeable outer encasement (200) comprises a coextruded film chosen from PE / PA / PP or PE / EVOH / PP, preferably PE / PA / PP.

[0147] 33. The package according to any one of the previous clauses,

[0148] wherein the air-impermeable outer encasement (200) comprises a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from polyamide (PA).

[0149] 34. The package according to any one of the previous clauses,

[0150] wherein the air-impermeable outer encasement (200) comprises a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from ethylene vinyl alcohol (EVOH).

[0151] 35. The package according to any one of the previous four clauses,wherein the air-impermeable outer encasement (200) has a thickness of at least 20 micron and at most 350 micron.

[0152] 36. The package according to any one of the previous clauses,

[0153] wherein the thickness t of the first film is in the range of 20 - 350 micron and wherein the first film comprises a material chosen from the group consisting of: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH) or combinations thereof and / or manufactured from a coextruded film.

[0154] 37. The package according to any one of the previous clauses and clause 2,

[0155] wherein the outer encasement (200) and the sub-encasements (220a) are made from the same material and / or have the same density.

[0156] 38. The package according to any one of the previous clauses,

[0157] wherein the air-impermeable outer encasement (200) is heat sealed.

[0158] 39. The package according to any one of the previous clauses,

[0159] wherein the first film comprises a metal (M), preferably aluminium (Alu).

[0160] 40. The package of the previous clause,

[0161] wherein the first film comprises in addition to said metal (M), a polymer (P), preferably wherein said polymer is chosen form the group consisting of: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH).

[0162] 41. The package according to any one of the previous clauses,

[0163] wherein the first film of the air-impermeable outer encasement (200) is mono barrier film or is a multi-layered barrier film.

[0164] 42. The package according to any one of the previous clauses,

[0165] wherein the first film of the air-impermeable outer encasement (200) is a multi-layered barrier film.

[0166] 43. The package of the previous clause,

[0167] wherein the first film of the air-impermeable outer encasement (200) is a two or three layered barrier film.44. The package according to any one of the previous clauses,

[0168] wherein the air-impermeable outer encasement (200) comprises

[0169] a first barrier film (Fl) that forms a base (41); and

[0170] a second barrier film (F2) that forms a cover (42) sealed to the base (41).

[0171] 45. The package according to any one of the previous two clauses,

[0172] wherein the cover (42) is sealed to the base (41) via an ultrasonic or heat seal (43).

[0173] 46. The package according to any one of the previous three clauses,

[0174] wherein the first barrier film (Fl) that forms the base (41) comprises multi layered barrier film; and wherein the second barrier film (F2) that forms the cover (42) comprises mono or multi-layered second barrier film (F2).

[0175] 47. The package according to any one of the previous four clauses,

[0176] wherein the multi layered barrier film (Fl) of the base (41) has a thickness t of at least 20 micron, preferably at least 30 micron, e.g. in the range of 30 - 500 micron, e.g. 300 micron, and wherein the mono or multi-layered second barrier film (F2) of the cover (42) has a thickness t’ which is the same or which is smaller than the thickness t of the first barrier film (Fl).

[0177] 48. The package according to any one of the previous five clauses, wherein the first barrier film (Fl) that forms the base (41) forms a hollow space in which the plurality of absorbent articles are placed.

[0178] 49. The package according to any one of the previous clauses,

[0179] wherein the plurality of absorbent articles comprises at least six absorbent articles.

[0180] 50. The package according to any one of the previous clauses and clause 2,

[0181] wherein the air-impermeable outer encasement (200) is a multi-layered barrier film and wherein at least one of the sub encasement(s) (220,221) is a single-layered barrier film.

[0182] 51. The package according to any one of the previous package clauses, wherein the absorbent article (100a) comprises or the articles within the plurality of absorbent articles (100) each comprise a liquid pervious topsheet, a liquid impervious backsheet, absorbent material positioned between the liquid pervious topsheet and the liquid impervious backsheet, and a bottom layer between the absorbent material and the liquid impervious backsheet, wherein the absorbent material comprisessuperabsorbent particles and cellulosic fluff pulp and is arranged such that one or more channels are formed, wherein less absorbent material per surface area is present in the one or more channels compared to an area around the one or more channels, wherein preferably substantially no absorbent material is present in the one or more channels, wherein the bottom layer is in contact with the absorbent material and has an average density as measured in a decompressed state between 20 and 400 kg / m3.

[0183] 52. The package according to the previous clause,

[0184] wherein the average density as measured in a decompressed state is between 20 and 300 kg / m3, more preferably between 20 and 250 kg / m3, even more preferably between 20 and 200 kg / m3, e.g. between 20 and 120 kg / m.

[0185] 53. The package according to any one of the previous clauses,

[0186] wherein the absorbent article (100a) comprise or the articles within the plurality of absorbent articles (100) each comprise

[0187] a liquid pervious topsheet (3000), a liquid impervious backsheet (2000), absorbent material positioned between the liquid pervious topsheet and the liquid impervious backsheet, and a capillary acceleration sheet (400) between the absorbent material and the liquid pervious topsheet, wherein the capillary acceleration sheet (400) has, as measured in a decompressed state, a basis weight between 15 and 55 g / m2 and comprises fibres having an average diameter between 10 and 35 micron, preferably between 15 and 30 micron, more preferably between 17 and 27 micron.

[0188] 54. The package according to any one of the previous clauses,

[0189] wherein the package further comprises a band or banding element (320), e.g. a paper strip, arranged around the vacuum sealed package.

[0190] 55. An assembly (10) for transporting absorbent articles, said assembly comprising a container (11), such as a box or a bag, wherein said container (11) is holding a plurality of vacuum sealed packages (1) as defined in any one of the previous package clauses.

[0191] 56. The assembly of the previous assembly clause,

[0192] wherein the plurality of the packages are arranged directly adjacently to each other within the container, and preferably stacked one above the other and / or arranged next to each other.

[0193] 57. The assembly according to any one of the previous assembly clauses,wherein the assembly is configured for transport, wherein the container is preferably a stackable box.

[0194] 58. A method for packaging and preferably subsequently transporting an absorbent article (100a) or a plurality of absorbent articles (100), such as one or more diapers, more preferably a plurality of absorbent articles (100) chosen from feminine hygiene garments, baby diapers and pants, adult incontinence garments; the method comprising the steps of:

[0195] - encasing the absorbent article (100a) or the plurality of absorbent articles (100) in an air-impermeable outer encasement (200), preferably the plurality of absorbent articles;

[0196] - vacuum sealing the air-impermeable outer encasement such that the absorbent article (100a) or the plurality of absorbent articles (100) is or are held in the outer encasement (200) in a compressed manner, preferably such that the plurality of absorbent articles are held in the outer encasement (200) in a compressed manner;

[0197] - preferably, transporting the absorbent article (100a) or the plurality of absorbent articles (100) while being compressed in the outer encasement; wherein the air-impermeable outer encasement (200) comprises a first film having a thickness t ranging between 5 - 500 micron.

[0198] 59. The method according to any one of the previous method clauses,

[0199] wherein at least one, preferably each of the absorbent articles comprise an absorbent core that is positioned between a liquid pervious topsheet and a liquid impervious backsheet.

[0200] 60. The method of the previous clause,

[0201] wherein the absorbent core comprises fluff and / or SAP.

[0202] 61. The method according to any one of the previous method clauses, wherein the encasing comprises:

[0203] - placing the plurality of absorbent articles (100) on a first film (Fl);

[0204] - providing a second film (F2) and sealing the second film to the first film, e.g. via a seal (43), to encase the plurality of absorbent articles.

[0205] 62. The method according the previous three method clauses, wherein the plurality of absorbent articles (100) are folded to have a C shape (60) having at least a first and second leg (61, 62), whereby the plurality of absorbent articles are placed such that the legs (61, 62) are parallel to the first film (Fl) on which the articles are placed.63. The method according to any one of the previous two method clauses, wherein the first film (Fl) is shaped to have a hollow space (80) to receive the plurality of absorbent articles; and wherein the plurality of absorbent articles are placed within said hollow space before the second film (F2) is sealed to the first film (Fl) thereby closing the hollow space.

[0206] 64. The method according to clause 61, wherein the first film (Fl) has a thickness in the range of 30 - 450 micron and wherein the second film (F2) has a thickness in the range of 30 - 450 micron, preferably wherein the thickness of the second film (F2) is smaller.

[0207] 65. The method according to any one of the previous method clauses,

[0208] wherein the absorbent article (100a) or plurality of absorbent articles (100) are chosen from the group consisting of: feminine hygiene garments, baby diapers and pants, adult incontinence garments.

[0209] 66. The method according to any one of the previous method clauses,

[0210] wherein the absorbent article (100a) or the plurality of absorbent articles (100) in an uncompressed state take up a total volume VI, wherein the step of vacuum sealing comprising:

[0211] - reducing the total volume VI of the plurality of absorbent articles by a factor of 1.1, preferably by a factor of 1.2, more preferably by a factor of 1.4.

[0212] 67. The method according to any one of the previous method clauses,

[0213] wherein the air-impermeable outer encasement (200) is made from a film having a thickness t ranging between 10 - 300 micron, preferably 15 - 200 micron, more preferably 30 - 150 micron, such as 90 micron.

[0214] 68. The method according to any one of the previous method clauses,

[0215] further comprising:

[0216] including a first dimensionally stable element (300a), and optionally a second dimensionally stable element (300b), within the air-impermeable outer encasement (200).

[0217] 69. The method of the previous clause,

[0218] wherein the first, and optionally the second, dimensionally stable element is being arranged adjacent to the absorbent article (100a) or the plurality of absorbent articles (100); and / or is being arranged between absorbent articles of the plurality of absorbent articles.

[0219] 70. The method according to any one of the previous method clauses,comprising:

[0220] including a first dimensionally stable element (300a), and a second dimensionally stable element (300b), within the air-impermeable outer encasement (200);

[0221] wherein the plurality of absorbent articles are ordered in a row and wherein the first and second dimensionally stable elements are positioned at the beginning and at the end of the row.

[0222] 71. The method according to any one of the preceding three method clauses,

[0223] wherein the step of vacuum sealing comprises pressing of the absorbent article or pressing of the plurality of absorbent articles between a first dimensionally stable element (300a) and a second dimensionally stable element (300b) placed within the outer encasement.

[0224] 72. The method according to any one of the previous method clauses,

[0225] wherein the step of vacuum sealing comprises pressing of the absorbent article or pressing of the plurality of absorbent articles between a first guiding plate and a second guiding plate positioned outside of the outer encasement.

[0226] 73. The method of the previous clause,

[0227] wherein the first and second guiding plates are positioned at opposite sides of the outer encasement, respectively, and are moved towards each other prior to and / or during the step of vacuum sealing.

[0228] 74. The method according to any one of the previous method clauses,

[0229] wherein the air-impermeable outer encasement (200) comprises a material chosen from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), nylon (polyamide) (PA), ethylene vinyl alcohol (EVOH) or combinations thereof and / or a coextruded film.

[0230] 75. The method according to any one of the previous method clauses,

[0231] wherein the air-impermeable outer encasement (200) comprises a coextruded film.

[0232] 76. The method of the previous clause,

[0233] wherein the coextruded film comprises a first material chosen (Ml) from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from polyamide (PA) or ethylene vinyl alcohol (EVOH).

[0234] 77. The method according to any one of the previous method clauses,wherein the air-impermeable outer encasement (200) comprises a coextruded film chosen from one of the following combinations PE / PA, PP / PA, PE / EVOH, PE / EVOH / PE, or PP / EVOH / PP.

[0235] 78. The method according to any one of the previous method clauses,

[0236] wherein the air-impermeable outer encasement (200) comprises a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from polyamide (PA) or ethylene vinyl alcohol (EVOH).

[0237] 79. The method according to any one of the previous method clauses,

[0238] wherein the air-impermeable outer encasement (200) comprises a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from polyamide (PA).

[0239] 80. The method according to any one of the previous method clauses,

[0240] wherein the air-impermeable outer encasement (200) comprises a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from ethylene vinyl alcohol (EVOH).

[0241] 81. The method according to any one of the previous method clauses,

[0242] wherein the air-impermeable outer encasement (200) has a thickness of at least 20 micron and at most 350 micron.

[0243] 82. The method according to any one of the previous method clauses, further comprising: providing a band or band element (320) around the package after the outer encasement has been vacuum sealed.

[0244] 83. The method according to any one of the previous method clauses, wherein the method is performed by aid of a vacuum packaging machine comprising one or more vacuum chambers, e.g. a single vacuum chamber or at least two vacuum chambers arranged on a rotating carousel.

[0245] 84. The method according to any one of the previous method clauses, wherein the vacuum packaging machine is chosen from a thermoforming vacuum packaging machine that comprises a thermoforming station, and wherein the method comprises using the thermoforming station for preshaping the first film before vacuum sealing the air-impermeable outer encasement, preferably for pre-shaping the first film to form tray-shaped cavities.85. The method according to any one of the previous method clauses, the method comprising: - placing the plurality of absorbent articles (100) on a first film (Fl), e.g. from a bottom film; - providing the second film (F2), e.g. from a top film, and sealing the second film to the first film, e.g. via a seal (43), to encase the plurality of absorbent articles.

[0246] 86. The method according to any one of the previous method clauses, wherein the first film (Fl) is pre-shaped via thermoforming before the plurality of absorbent articles are placed.

[0247] 87. The method according to any one of the previous method clauses, wherein the first film (Fl) is pre-shaped into tray-shaped cavities.

[0248] 88. The method according to any one of the previous method clauses, wherein the plurality of absorbent articles (100) are folded to have a C shape (60) having at least a first and second leg (61, 62), whereby the plurality of absorbent articles are placed such that the legs (61, 62) are parallel to the first film (Fl) on which the articles are placed, preferably parallel to a bottom of a tray shaped-cavity in which the absorbent articles are placed.

[0249] 89. The method according to any one of the previous method clauses, wherein the method comprises a plurality of steps, e.g. as the executed by aid of a thermoforming packaging machine, wherein said plurality of steps comprise:

[0250] (a) optionally, feeding a bottom film (Fla) to form the first film (Fl) into a thermoforming station (130);

[0251] (b) thermoforming said bottom film (Fla) into tray-shaped cavities (131);

[0252] (c) depositing a plurality of absorbent articles (100) into the tray-shaped cavities to obtain filled tray-shaped cavities in which absorbent articles (100) are deposited ;

[0253] (d) feeding a top film (F2a) to form the second film (F2) above the filled tray-shaped cavities; (e) sealing said top film (F2a) as the second film (F2) to the tray-shaped cavities (131) comprising the bottom film (Fla) and evacuating air from the tray-shaped cavities (131), such that the absorbent articles (100) are held in a compressed manner;

[0254] (f) cutting into individual packages (135) to obtain individual packages wherein absorbent articles are held in a compressed manner ; and (g) optionally discharging finished packages for further handling.90. The method according to any one of the previous method clauses, wherein the bottom film (Fla) has a thickness in the range of 20 - 500 micron, e.g. 300 micron

[0255] 91. The method according to any one of the previous method clauses, wherein the top film (Fla) has a smaller thickness than the bottom film (Fla).

[0256] 92. The method according to any one of the previous method clauses, wherein the top film (Fla) has a thickness in the range of 5 - 450 micron, preferably 10 - 300 micron, more preferably 30 - 180 micron, e.g. 90 micron.

[0257] 93. The method according to any one of the previous method clauses, wherein the top film (F2a) and bottom film (Fla) are chosen from a coextruded film chosen from one of the following: PE / PA, PP / PA, PE / EVOH, PE / EVOH / PE, PP / EVOH / PP, PE / PA / PP or PE / PA / PE, preferably a coextruded film chosen from PE / PA / PP or PE / EVOH / PP, preferably PE / PA / PP; and preferably chosen such that at least one thermoplastic polymer, e.g. PE or PP, of the top film corresponds to a thermoplastic polymer, e.g. PE or PP, of the bottom film, and wherein the method comprises sealing the corresponding thermoplastic polymers, e.g. PE to PE or PP to PP, together.

[0258] 94. The method according to any one of the previous method clauses, bottom wall (52) and sidewalls (53), wherein the absorbent articles each comprise

[0259] an absorbent core (1000) folded to have at least one C shape (60) with a first and second leg (61, 62); wherein the method comprises:

[0260] depositing the absorbent articles into the tray-shaped whereby the legs of each C shape are arranged substantially parallel to the bottom wall (51, 52).

[0261] 95. The method according to any one of the previous method clauses, wherein the one or more vacuum chambers include a plurality of vacuum chambers that are arranged on a carousel.,

[0262] 96. The method according to any one of the previous method clauses, wherein the method comprises the steps of:

[0263] providing a plurality of absorbent articles loaded into non sealed bags comprising the first film to obtain loaded non-sealed bags;

[0264] placing the loaded non-sealed bags into the vacuum chambers of the carousel;

[0265] sealing the loaded non-sealed bags to obtain sealed loaded bags, said sealing by aid of the vacuum chambers arranged on the carousel while the carousel continues to rotate;discharging the sealed loaded bags from the rotating carousel so as to obtain packages with an air-impermeable outer encasement that hold a plurality of absorbent articles in a compressed manner

[0266] 97. The method according to any one of the previous method clauses, wherein the thickness t of the first film is in the range of 20 - 350 micron and wherein the first film comprises a material chosen from the group consisting of: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH) or combinations thereof.

[0267] 98. The method according to any one of the previous method clauses, wherein the vacuum sealing the air-impermeable outer encasement comprises evacuating air until an internal pressure within the an air-impermeable outer encasement reaches a pressure within the range of 50 mbar to 550 mbar

[0268] 99. The method according to any one of the previous method clauses, wherein the vacuum sealing of the air-impermeable outer encasement comprises evacuating air until an internal pressure within the an air-impermeable outer encasement reaches a pressure within the range of 70 mbar to 450 mbar, more preferably in the range of 80 mbar to 350 mbar, such as 100 mbar or 250 mbar.

[0269] The principles or features outlined in the context of the method described herein are equally applicable to the package and the clauses mentioned, and vice versa. Similarly, the principles or features discussed in relation to the product (the package) are equally relevant to the method and clauses described herein.

[0270] BRIEF DESCRIPTION OF FIGURES

[0271] The accompanying drawings are used to illustrate presently preferred non-limiting exemplary embodiments of devices of the present invention. The above and other advantages of the features and objects of the invention will become more apparent and the invention will be better understood from the following detailed description when read in conjunction with the accompanying drawings, in which:

[0272] Fig.l shows a conventional package in which several absorbent articles are packed.

[0273] Fig.2A shows an exemplary embodiment of an absorbent article packed in a vacuum sealed package.

[0274] Fig.2B shows an exemplary embodiment of an absorbent article packed in a vacuum sealed package together with a dimensionally stable element.

[0275] Fig.3A shows an exemplary embodiment of a package packing a plurality of absorbent articles in a vacuum sealed outer encasement.Fig.3B shows an exemplary embodiment of a package packing a plurality of absorbent articles in a vacuum sealed outer encasement wherein each absorbent article is packed in a sub-encasement. Fig.3C shows an exemplary embodiment of a plurality of absorbent articles packed in a vacuum sealed package wherein each absorbent article is packed in a vacuum sealed sub-encasement. Fig.3D shows an exemplary embodiment of a plurality of absorbent articles packed in a vacuum sealed package wherein the absorbent article are grouped together and packed in sub-encasements.

[0276] Fig.3E shows an exemplary embodiment of a plurality of absorbent articles packed in a vacuum sealed package wherein the absorbent article are grouped together and packed in vacuum sealed sub-encasements .

[0277] Fig.3F shows an exemplary embodiment of a plurality of absorbent articles packed in a vacuum sealed package and a combination of non-sub-packed and sub-packed, grouped and non-grouped absorbent articles packed in vacuum and non-vacuum sealed sub-encasements.

[0278] Fig.4 shows an exemplary embodiment of a plurality of absorbent articles packed in a vacuum sealed package together with dimensionally stable elements.

[0279] Fig.5 shows an exemplary embodiment of a plurality of absorbent articles packed in a vacuum sealed package together with dimensionally stable elements and wherein the absorbent articles are sub packed in vacuum sealed sub-encasements.

[0280] Fig.6A shows an assembly of a container holding a plurality of vacuum sealed packages.

[0281] Fig.6B shows an assembly of a container holding a plurality of vacuum sealed packages with dimensionally stable elements.

[0282] Fig.7A and Fig. 7D are schematic top plan views of exemplary embodiments of an absorbent article, here in the form of a diaper.

[0283] Fig.7B and Fig.7C are cross-sections of exemplary embodiments of an absorbent article illustrating an absorbent core.

[0284] Fig. 8A and Fig.8B and Fig. 8C and Fig. 8D show cross-sectional views of an exemplary embodiments whereby a plurality of absorbent articles are packed an air-impermeable outer encasement having a first film (Fl) and a second film (F2). Fig. 9A, Fig.9B and Fig. 9C and Fig.

[0285] 9D, Fig. 9E and Fig.9F show perspective views of a package whereby a plurality of absorbent articles are packed in an outer encasement having a first film (Fl) and a second film (F2).

[0286] Fig. 10A, illustrates schematically a potential production set up to perform a method for vacuum packaging a plurality of absorbent articles.

[0287] Fig. 10B, illustrates a picture of an example of tray-shaped cavities in which absorbent articles are placed (as schematically illustrated) and Fig. IOC shows a potential cross section through section line X-X of Fig. 10B. Fig. 10D illustrates schematically a cross sectional view after the second film is applied and sealed, e.g. as illustrated by Fig. 10A.Fig. 11A and Fig. 11B further illustrate potential production set-ups.

[0288] Fig. 12 illustrates a method for measuring the inside pressure of the package.

[0289] Notably, the same elements with the same reference numbers can have the same effects. Any one of the features described below can have the sub features and effects as described in the summary.

[0290] DETAILED DESCRIPTION OF EMBODIMENTS

[0291] Glossary

[0292] As used in the present application, the following terms have the following meanings:

[0293] "A", "an", and "the" as used herein refers to both singular and plural referents unless the context clearly dictates otherwise. By way of example, "an edge barrier" refers to one or more than one edge barrier.

[0294] "About" as used herein referring to a measurable value such as a parameter, an amount, a temporal duration, and the like, is meant to encompass variations of + / -20% or less, preferably + / -10% or less, more preferably + / -5% or less, even more preferably + / -!% or variations are appropriate to perform in the disclosed invention. However, it is to be understood that the value to which the modifier "about" refers is itself also specifically disclosed.

[0295] "Absorbent article", "absorbent garment", "absorbent product", "absorbing article", "absorbing garment", "absorbing product" and the like as used herein are used interchangeably and refer to devices that absorb and contain bodily exudates, and more specifically, refers to devices that are placed against or in proximity to the body of the wearer to absorb and contain the various liquids discharged from the body. Absorbent articles include but are not limited to feminine hygiene garments, baby diapers and pants, adult incontinence garments, various diaper and pants holders, liners, towels, absorbent inserts and the like.

[0296] "Absorbent core" as used herein refers to a three-dimensional part of the absorbent structure, comprising liquid- absorbing material, useful to permanently absorb and / or retain bodily exudates. "Absorbent component" as used herein refers to a structural constituent of an absorbent article, e.g., a piece of an absorbent core, such as one of multiple pieces in a multi-piece absorbent core. "Absorbent element" as used herein refers to a part of a functional constituent of an absorbent structure, e.g., an acquisition layer, a dispersion layer, core layer or a release structure formed of a material or materials having particular liquid handling characteristics suitable for the specific function.

[0297] "Absorbent fibrous polymer material" as used herein refers to an absorbent polymer material which is in threadlike from such as fibers, filaments, and the like so as to be less flowable in the dry state than particulates.

[0298] "Absorbent insert" as used herein refers to a device adapted for insertion into an "Absorbent layer" as used herein refers to a term referring to a discrete, identifiable sheet-like or web-like element ofan absorbent article which may remain detached and relatively movable with respect to another such element or may be attached or joined so as to remain permanently associated with another such element. Each absorbent layer may itself include a laminate or combination of several layers, sheets and / or webs of similar or diverse compositions.

[0299] "Absorbent polymer material", "absorbent gelling material", "AGM", "superabsorbent", "superabsorbent material", "superabsorbent polymer", "SAP" and the like as used herein are used interchangeably and refer to any suitable particulate (e.g., flaked, particulate, granular, or powdered) or fibrous cross linked polymeric materials that can absorb at least 5 times and preferably at least about 10 times or more its weight of an aqueous 0.9% saline solution as measured using the Centrifuge Retention Capacity test (EDANA 441.2-01).

[0300] "Absorbent polymer material area" as used herein refers to the area of the absorbent structure wherein adjacent layers are separated by a multiplicity of absorbent polymer material. Incidental contact areas between these adjacent layers within the absorbent particulate polymer material area may be intentional (e.g bond area's) or unintentional (e.g. manufacturing artifacts).

[0301] "Absorbent particulate polymer material" as used herein refers to an absorbent polymer material which is in particulate form such as powders, granules, flakes and the like so as to be flowable in the dry state.

[0302] "Absorption" as used herein refers to the process by which a liquid is taken up within a material. "Absorption rate" as used herein refers to the rate of absorption of liquid, i.e. the amount of liquid which is absorbed per unit of time, typically by an absorbent component, element and / or absorbent layer of the absorbent article, structure and / or core.

[0303] "Acquisition layer", "acquisition region", "acquisition surface" or "acquisition material" and the like as used herein refer to the layer overlying the absorbent core having a faster liquid uptake and / or distribution capability.

[0304] "Absorbency" is the ability of a material to take up fluids by various means including capillary, osmotic, solvent, chemical and / or other action.

[0305] "Adult incontinence garment" as used herein refers to absorbent articles intended to be worn by incontinent adults, for absorbing and containing bodily exudates.

[0306] "Adhesion" as used herein refers to the force that holds different materials together at their interface.

[0307] "Adhesive" as used herein refers to a material, which may or may not be flowable in solution or when heated, that is used to bond materials together.

[0308] "Adsorption" as used herein refers to the process by which a liquid is taken up by the surface of a material."Airlaying" as used herein refers to forming a web by dispersing fibers or particles in an air stream and condensing them from the air stream onto a moving screen by means of a pressure and / or vacuum; a web of fibers produced by airlaying is herein referred to an "airlaid"; an airlaid web bonded by one or more techniques to provide fabric integrity is herein referred to an "airlaid nonwoven".

[0309] "Apparent density", "density" as used herein refers to the basis weight of the sample divided by the caliper with appropriate unit conversions incorporated therein. Apparent density used herein has the unit g / cm3.

[0310] "Attach", "attached" and "attachment" as used herein are synonymous with their counterparts of the terms "fasten", "affix", "secure", "bind", "join" and "link".

[0311] “Air-impermeable” indicates that the encasement is designed to prevent or not allow air or moisture to pass through it, providing a barrier against the flow of air or moisture. This characteristic causes the enclosed absorbent articles to be protected from air and moisture exposure during transport. As such, hygiene and final product performance can be safeguarded. The first film and / or the second film may exhibit an oxygen transmission rate (OTR) of less than 1 cc / m2 / day and a moisture vapor transmission rate (MVTR) of less than 0.5 g / m2 / day at 23°C and 50% relative humidity, preferably less than 0.3 g / m2 / day, even more preferably less 0.1 g / m2 / day. The OTR can be measured using the ASTM D3985-17 (Dec 28, 2017) standard test method. The ASTM D3985-17 standard test method is a widely recognized and accepted procedure for measuring the oxygen transmission rate of various materials.

[0312] "Baby diaper" as used herein refers to absorbent articles intended to be worn by children, for absorbing and containing bodily exudates which the user draws up between the legs and fastens about the waist of the wearer.

[0313] "Baby pants" as used herein refers to absorbent articles marketed for use in transitioning children from diapers to underwear intended to cover the lower torso of children, so as to absorb and contain body exudates which article is generally configured like a panty garment and manufactured with a completed waist encircling portion, thereby eliminating the need for the user to fasten the article about the waist of the wearer.

[0314] "Back region" as used herein refers to the portion of an absorbent article or part thereof that is intended to be positioned proximate the back of a wearer.

[0315] "Backing" as used herein refers to a web or other material that supports and reinforces the back of a product.

[0316] "Basis weight" is the weight per unit area of a sample reported in grams per square meter, g / m2 or gsm."Bodily exudates", "body exudates", "bodily fluids", "body fluids", "bodily discharges", "body discharges", "fluid(s)", " liquid(s)", "fluid(s) and liquid(s) and the like as used herein are used interchangeably and refer to, but are not limited to urine, blood, vaginal discharges, breast milk, sweats and fecal matter.

[0317] "Binder", "adhesive", "glue", "resins", "plastics" and the like as used herein are used interchangeably and refer to substances, generally in a solid form (e.g. powder, film, fiber) or as a foam, or in a liquid form (e .g. emulsion, dispersion, solution) used for example by way of impregnation, spraying, printing, foam application and the like used for attaching or bonding functional and / or structural components, elements and materials, for example including heat and / or pressure sensitive adhesives, hot-melts, heat activated adhesives, thermoplastic materials, chemical activated adhesives / solvents, curable materials and the like.

[0318] "Bond strength" as used herein refers to the amount of adhesion between bonded surfaces. It is a measure of the stress required to separate a layer of material from the base to which it is bonded. "Capillary action", "capillarity", or "capillary motion" and the like as used herein are used to refer to the phenomena of the flow of liquid through porous media.

[0319] "Chassis" as used herein refers to a foundational constituent of an absorbent article upon which the remainder of the structure of the article is built up or overlaid, e.g., in a diaper, the structural elements that give the diaper the form of briefs or pants when configured for wearing, such as a backsheet, a topsheet, or a combination of a topsheet and a backsheet.

[0320] "Cluster" or the like as used herein refers to an agglomeration of particles and / or fibers.

[0321] "Chemically stiffened fibers", chemically modified fibers", "chemically cross-linked fibers", "curly fibers" and the like as used herein are used interchangeably and refer to any fibers which have been stiffened by chemical means to increase stiffness of the fibers under both dry and aqueous conditions, for example by way of addition of chemical stiffening agents (e.g. by coating, impregnating, etc), altering the chemical structure of the fibers themselves (e.g. by cross-linking polymer chains, etc) and the like.

[0322] "Cohesion" as used herein refers to the resistance of similar materials to be separated from each other.

[0323] "Compartment" as used herein refers to chambers, cavities, pockets and the like.

[0324] "Comprise," "comprising," and "comprises" and "comprised of" as used herein are synonymous with "include", "including", "includes" or "contain", "containing", "contains" and are inclusive or open-ended terms that specify the presence of what follows e.g. a component and do not exclude or preclude the presence of additional, non-recited components, features, elements, members, steps, known in the art or disclosed therein."Coverstock" as used herein refers to a lightweight non-woven material used to contain and conceal an underlying absorbent core material; examples are the facing layer or materials that cover the absorbent cores of feminine hygiene garment s, baby diapers and pants and adult incontinence garments.

[0325] "Crotch region" of an absorbent article as used herein refers to about 50% of the absorbent article's total length (i.e., in the y-dimension), where the crotch point is located in the longitudinal center of the crotch region. That is, the crotch region is determined by first locating the crotch point of the absorbent article, and then measuring forward and backward a distance of 25% of the absorbent article's total length.

[0326] "Cross direction (CD)", "lateral" or "transverse" and the like as used herein are used interchangeably and refer to a direction which is orthogonal to the longitudinal direction and includes directions within ±45° of the transversal direction.

[0327] "Curing" as used herein refers to a process by which resins, binders or plastics are set into or onto fabrics, usually by heating, to cause them to stay in place; the setting may occur by removing solvent or by cross-linking so as to make them in soluble.

[0328] "Diaper", "conventional diaper", "diaper-like", "diaper-like garment" and the like as used herein are used interchangeably and refer to disposable absorbent articles, which typically include a front waist portion and a back waist portion which may be releasable connected about the hips of the wearer during use by conventional fasteners such as adhesive tape fasteners or hook and loop type fasteners. In use, the article is positioned between the legs of the wearer and the fasteners are releasable attached to secure the back waist portion to the front waist portion of the diaper, thereby securing the diaper about the waist of the wearer. The front waist portion and a back waist portion are connected by relatively non-stretchable or stretchable members (the term "stretchable" as used herein refers to materials that are extensible when forces are applied to the material, and offer some resistance to extension). Hence, such articles are generally not configured to be pulled up or down over the hips of the wearer when the fasteners are attached.

[0329] "Dispersion layer", "dispersion region", "dispersion surface" or "dispersion material" and the like as used herein refer to the layer overlying the absorbent core having a faster liquid uptake and dispersion capability.

[0330] "Disposable" is used herein to describe articles that are generally not intended to be laundered or otherwise restored or reused (i.e., they are intended to be discarded after a single use and, preferably, to be recycled, composted or otherwise disposed of in an environmentally compatible manner).

[0331] "Drylaying" as used herein refers to a process for making a nonwoven web from dry fiber; these terms apply to the formation of carded webs, as well as to the air laying formation of random webs;a web of fibers produced by drylaying is herein referred to as a "drylaid"; a drylaid web bonded by one or more techniques to provide fabric integrity is herein referred to a "drylaid nonwoven". "Dry strength" as used herein refers to the strength of ajoint determined in dry state conditions, immediately after drying under specified conditions or after a period of conditioning in the standard laboratory atmosphere.

[0332] "Essentially fluffless" or "little to no fluff pulp" as used herein refers to an absorbent article, structure, core, component and / or element containing less than 20% by weight fluff pulp, less than 10% fluff pulp, less than 5% fluff pulp, no fluff pulp, or no more than an immaterial amount of fluff pulp which do not materially affect the thinness, flexibility or absorbency thereof.

[0333] "Fabric" as used herein refers to a sheet structure made from fibers, filaments and / or yarns.

[0334] "Feminine hygiene garments" as used herein refer to absorbent hygiene articles intended to be worn by woman, for absorbing and containing body exudates.

[0335] "Fiber" as used herein refers to the basic threadlike structure from which nonwovens, yarns and textiles are made. It differs from a particle by having a length at least 4 times its width; "Natural fibers" are either of animal (wool, silk), vegetable (cotton, flax, jute) or mineral (asbestos) origin, while "Man-made fibers" may be either polymers synthesized from chemical compounds (polyester, polypropylene, nylon, acrylic etc.) or modified natural polymers (rayon, acetate) or mineral (glass). "Fiber" and "filament" are used interchangeably.

[0336] "Fluff pulp" or "Pulp fluff" as used herein refers to wood pulp specially prepared to be drylaid. The fibers can be either natural or synthetic or a combination thereof.

[0337] "Front region" as used herein refers to the portion of an absorbent article or part thereof that is intended to be positioned proximate the front of a wearer.

[0338] "Garment facing layer" as used herein refers to elements of the chassis that form the outer surface of the absorbent article, such as the backsheet, the side panels, the waist fasteners, and the like, when such elements are present.

[0339] "Heat activated adhesive" as used herein refers to a dry adhesive that is rendered tacky or fluid by application of heat or heat and pressure to the assembly.

[0340] "Heat sealing adhesive" as used herein refers to a thermoplastic adhesive which is melted between the adherent surfaces by heat application to one or both of the adjacent adherent surfaces.

[0341] "High loft" as used herein refers to general term of low density, thick or bulky fabrics.

[0342] "Hot-melt adhesive" as used herein refers to a solid material that melts quickly upon heating, then sets to a firm bond upon cooling; used for almost instantaneous bonding.

[0343] "Hydrophilic" as used herein refers to having an affinity for being wetted by water or for absorbing water."Hydrophobic" as used herein refers to lacking the affinity for being wetted by water or for absorbing water.

[0344] "Immobilization layer" as used herein refers to a layer able to be applied to the absorbent polymer material or absorbent polymer material area with the intent to gather, bond and / or immobilize absorbent material and / or absorbent layer.

[0345] "Join", "joined" and "joining" as used herein refers to encompassing configurations wherein an element is directly secured to another element by affixing the element directly to the other element, as well as configurations wherein the element is indirectly secured to the other element by affixing the element to an intermediate member or members which in turn is or are affixed to the other element.

[0346] "Knitting" as used herein refers to the technique for interlocking loops of fibers with needles or similar devices.

[0347] "Layer" refers to identifiable components of the absorbent article, and any part referred to as a "layer" may actually comprise a laminate or combination of several sheets or webs of the requisite type of materials. As used herein, the term "layer" includes the terms "layers" and "layered." "Upper" refers to the layer of the absorbent article which is nearest to and / or faces the wearer facing layer; conversely, the term "lower" refers to the layer of the absorbent article which is nearest to and / or faces the garment facing layer. "Layer" is three dimensional structure with a x dimension width, y dimension length, and z-dimensions thickness or caliper, said x-y dimensions being substantially in the plane of the article, however it should be noted that the various members, layers, and structures of absorbent articles according to the present invention may or may not be generally planar in nature, and may be shaped or profiled in any desired configuration .

[0348] "Machine direction (MD)", "longitudinal" and the like as used herein are used interchangeably and refer to a direction running parallel to the maximum linear dimension of the structure and includes directions within ±45° of the longitudinal direction.

[0349] "Major surface" as used herein refers to a term used to describe the surfaces of greatest extent of a generally planar or sheet-like structural element and to distinguish these surfaces from the minor surfaces of the end edges and the side edges, i.e., in an element having a length, a width, and a thickness, the thickness being the smallest of the three dimensions, the major surfaces are those defined by the length and the width and thus having the greatest extent.

[0350] "Mass flow" as used herein refers to the flow of a liquid from one absorbent element or component to another absorbent element or component by channel flow action.

[0351] "Mechanical bonding" as used herein refers to a method of bonding fibers by entangling them. This can be achieved by needling, stitching with fibers or by the use of high-pressure air or waterjets and the like."Nonwoven" as used herein refers to manufactured sheet, web or batt of directionally or randomly orientated fibers, bonded by friction, and / or cohesion and / or adhesion, excluding packaging laminate and products which are woven, knitted, tufted, stitch-bonded incorporating binding yarns or filaments, or felted by wet-milling, whether or not additionally needled. The fibers may be of natural or man-made origin and may be staple or continuous filaments or be formed in situ.

[0352] Commercially available fibers have diameters ranging from less than about 0.001 mm to more than about 0.2 mm and they come in several different forms: short fibers (known as staple, or chopped), continuous single fibers (filaments or monofilaments), untwisted bundles of continuous filaments (tow), and twisted bundles of continuous filaments (yarn). Nonwoven fabrics can be formed by many processes such as melt blowing, spun bonding, solvent spinning, electrospinning, and carding. The basis weight of nonwoven fabrics is usually expressed in grams per square meter (gsm).

[0353] "Pant", "training pant", "closed diapers", "prefastened diapers", "pull-on diapers" and "diaperpants" and the like as used herein are used interchangeably and refer to absorbent articles which are typically applied to the wearer by first leading the feet into the respective leg openings and subsequently pulling the pants from the feet to waist area over the hips and buttocks of the wearer and which are capable of being pulled up or down over the hips of the wearer. Typically, such articles may include a front waist portion and a back waist portion which may be connected about the hips of the wearer by integral or releasable members. A pant may be preformed by any suitable technique including, but not limited to, joining together portions of the article using refastenable and / or nonrefastenable bonds (e.g., seam, weld, adhesive, cohesive bond, fastener, etc.). A pant may be preformed anywhere along the circumference of the article (e.g., side fastened, front waist fastened).

[0354] "Polymer" as used herein refers to but is not limited to, homopolymers, copolymers, such as for example, block, graft, random and alternating copolymers, terpolymers, etc. and blends and modifications thereof. Unless otherwise specifically limited, the term "polymer" includes all possible spatial configurations of the molecule and include, but are not limited to isotactic, syndiotactic and random symmetries.

[0355] “Polyamide” as used herein refers to a Nylon polymer, hence Polyamide, Nylon Polyamide, Polyamide Nylon can be used interchangeably herein.

[0356] "Rear" as used herein refers to the portion of an absorbent article or part thereof that is intended to be positioned proximate the back of the wearer.

[0357] "Release structure", "release region", "release surface" or "release material" and the like as used herein are used interchangeably and refer to a structure in fluid communication with the absorbentcore having a larger relative liquid absorption capacity and / or rate allowing it to quickly take up, temporarily hold and releasing liquids.

[0358] "Resin" as used herein refers to a solid or semisolid polymeric material.

[0359] "Thermobonding" as used herein refers to a method of bonding fibers by the use of heat and / or high-pressure.

[0360] "Thermoplastic" as used herein refers to polymeric materials that have a melting temperature and can flow or be formed into desired shapes on the application of heat at or below the melting point. "Ultrasonic" as used herein refers to the use of high frequency sound to generate localized heat through vibration thereby causing thermoplastic fibers to bond to one another.

[0361] "Water-absorbing", "liquid-absorbing", "absorbent", "absorbing" and the like as used herein are used interchangeably and refer to compounds, materials, products that absorb at least water, but typically also other aqueous fluids and typically other parts of bodily exudates such as at least urine or blood.

[0362] "Wearer facing layer" as used herein refers to elements of the chassis that form the inner surface of the absorbent article, such as the topsheet, the leg cuffs, and the side panels, etc., when such elements are present.

[0363] "Weaving" as used herein refers to the process of interlacing two or more sets of yarns at right angles to form a fabric; a web of fibers produced by weaving is herein referred to as a "woven". "Web material" as used herein refers to an essentially endless material in one direction, i.e. the longitudinal extension or the length, or the x- direction in Cartesian coordinates relative to the web material. Included in this term is an essentially unlimited sequence of pieces cut or otherwise separated from an essentially endless material. Often, though not necessarily, the web materials will have a thickness dimension (i.e. the z-direction) which is significantly smaller than the longitudinal extension (i.e. in x-direction). Typically, the width of web materials (they-direction) will be significantly larger than the thickness, but less than the length. Often, though not necessarily, the thickness and the width of such materials is essentially constant along the length of the web. Without intending any limitation, such web materials may be cellulosic fiber materials, tissues, woven or nonwoven fabrics and the like. Typically, though not necessarily, web materials are supplied in roll form, or on spools, or in a folded state in boxes. The individual deliveries may then be spliced together to form the essentially endless structure. A web material may be composed of several web materials, such as multilayer non-woven, coated tissues, nonwoven / film laminates. Web materials may comprise other materials, such as added binding material, particles, hydrophilizing agents and the like.

[0364] "Wet burst strength" is a measure of a layer's ability to absorb energy, when wet and subjected to deformation normal to the plane of the web."Wet strength" as used herein refers to the strength of a joint determined immediately after removal from a liquid in which it has been immersed under specified conditions of time, temperature and pressure. The term is commonly used in the art to designate strength after immersion in water. "Wetlaying" as used herein refers to the forming a web from an aqueous dispersion of fibers by applying modified packaging laminate making techniques; a web of fibers produced by wetlaying is herein referred to as a "wetlaid".

[0365] "Wood pulp" as used herein refers to cellulosic fibers used to make viscose rayon, packaging laminate and the absorbent cores of products such as feminine hygiene garments, baby diapers and pants and adult incontinence garments.

[0366] "X-y dimension" as used herein refers to the plane orthogonal to the thickness of the article, structure or element. The x- and y-dimensions correspond generally to the width and length, respectively, of the article, structure or element.

[0367] "Z-dimension" as used herein refers to the dimension orthogonal to the length and width of the article, structure or element. The z-dimension corresponds generally to the thickness or height of the article, structure or element.

[0368] Fig.l shows a conventional package 1c in which several absorbent articles 100 are packed, the articles shown here are in the form of folded diapers. The absorbent articles 100 may be bulky, occupying a significant amount of space during storage and transportation. Which is only one of the deficiencies being addressed by the present invention as will be explained further.

[0369] Fig.2A shows an exemplary embodiment of an individual absorbent article 100a packed in a vacuum sealed package 1. The package 1 has outer encasement 200 encasing the absorbent article and is vacuum sealed such that the absorbent article 100a is held in the outer encasement 200 in a compressed manner. Notably, when referring to an article being in a state of compressed manner, it suggests that the articles have undergone a reduction in size or volume through compression, for example compressed by the vacuum sealing of the article optionally after being pre-compressed before the articles are vacuum sealed in the outer encasement (or sub-encasement). Hence, compressed articles are typically compacted to occupy less space compared to their original or expanded state after being compressed. Fig.2A further shows that the air-impermeable outer encasement 200 is made from a film having a thickness t. This thickness ranges between 5 - 500 micron so as to ensure a good barrier functionality and to avoid breaches, hence safeguarding the article 100a within. The thickness is preferably 10 - 300 micron, more preferably 30 - 180 micron, most preferably about 90 micron to ensure a good degree of barrier functionally allowing for improved hygiene while having an efficient use of raw materials. The outer encasement 200 can have any one of the features as explained herein, such as the oxygen transmission rate, choice of material etc. Preferably, the thickness t is at least 15 micron. The packages as shown herein are preferablyvacuum sealed to the internal pressure as described herein, preferably within the range of 50 mbar to 550 mbar, more preferably within the range of 70 mbar to 450 mbar, such as 100 mbar or 250 mbar.

[0370] Fig.2B shows an exemplary embodiment of an absorbent article 100a packed in a vacuum sealed package together with a dimensionally stable element 300a placed adjacent to the absorbent article 100a. A dimensionally stable element 300a, as used in the embodiment shown in Fig.2B, refers to a separate item or component placed adjacent to the absorbent article within the vacuum-sealed package. It can take various forms such as a cardboard insert, foam insert, plastic insert, molded plastic insert, or polypropylene / polystyrene insert or divider. The purpose of the dimensionally stable element is to provide added structural support and stability to the absorbent article during storage, transportation, and handling. The inclusion of a dimensionally stable element 300a in the vacuum-sealed package offers several benefits. Firstly, it helps to maintain the shape and integrity of the absorbent article 100a, preventing deformation that could occur due to external pressures or compression. This ensures that the absorbent article retains its intended structure and performance characteristics, providing optimal functionality when used. Secondly, the dimensionally stable element 300a can assist in organizing and separating the absorbent article from other contents such as other absorbent articles 100 within the package 1. It helps to prevent shifting or movement of the absorbent article during transit, reducing the risk of damage or potential loss of effectiveness.

[0371] Fig.2B indicates a dimensionally stable elements placed in the interface between the absorbent article 100a and the film of the outer encasement 200. Generally, the use of one or more dimensionally stable elements 300a (see for example figures 4 and 5 wherein more than one element is used) promotes visual appeal and recognition of the package of absorbent articles, in particular when provided with a data, such as printed information like a printed image and / or printed letters. The dimensionally stable element 300a enhances the presentation and overall quality of the product, making it more attractive to consumers. Indeed, by having the dimensionally stable elements 300a placed within the outer encasement 200, undesired deformities can be avoided. Generally, the stable elements are preferably flat. Generally, the elements may for example be substantially square or rectangular of shape. Understandably, the dimensionally stable elements may also be included in the embodiments shown and explained in the context of Fig.8 A to Fig.9B. It may be beneficial to include a dimensionally stable element in the embodiment as shown in fig. 8A or 8B, for example at any of the following locations: adjacent and parallel to the bottom wall 52, adjacent and parallel to the top wall 51 or combinations thereof.

[0372] In Fig.3A, an exemplary embodiment is shown wherein a vacuum-sealed package 1 encloses a plurality of absorbent articles 100, such several diapers. The package includes an air-impermeable outer encasement 200 that is vacuum sealed, effectively compressing and holding the absorbent articles within. Notably, the vacuum-sealed package 1 may also encompass a single absorbent article100a as explained in connection to figures 2A-2B. The thickness of the outer encasement is indicated with thickness t. The preferred thickness range for the air-impermeable outer encasement is between 5 - 500 microns, the sub-range of 10 - 300 microns provides a good balance between strength and flexibility, ensuring the outer encasement 200 can withstand handling and transportation while accommodating certain deformations. Most preferably, and generally applicable herein, the thickness t is between 20 - 250 micron, about 90 micron so as to offer excellent barrier properties, sufficient strength, and cost-effectiveness. Generally applicable, the outer encasement 200 may be made from a single-layered film or multi-layered film as described herein. The sub encasements (see 220, 220a, 221, 221a in the figures) may be made from a single -layered film or multi-layered film as described herein. Here, in Fig.3A a plurality of articles 100 is indicated. A plurality, in general, refers to a quantity of more than one or multiple items. In this context, it signifies that the package can contain multiple absorbent articles, allowing for efficient packaging and transportation of a set or group of such articles. The outer encasement 200 is vacuum sealed to create a compressed arrangement of the absorbent article(s). This compression reduces the overall volume of the package, optimizing space utilization during storage and transport. Optionally, the absorbent articles 100 may be precompressed by any suitable compression means such as mechanical compression means before being inserted and compressed with the vacuum sealed outer encasement 200. By utilizing the vacuum-sealed outer encasement 200, the package 1 provides a secure and compact solution for packaging the absorbent articles 100. The compression helps to minimize the size of the package, allowing for efficient stacking, storage, and transportation of multiple absorbent articles while maintaining their integrity and protecting them from external factors. Such protection from external factors may be further increased by sub-encasements 220 which can also be vacuum sealed, thereby creating vacuum sealed sub-encasements 220a as shown in Fig.3B.

[0373] Fig.3B illustrates an exemplary embodiment of a package 1 that contains a plurality of absorbent articles 100 packed within a vacuum-sealed outer encasement 200. In this embodiment, each individual absorbent article 100a is packed in its own individual sub-encasement 220, providing additional protection and isolation. It is shown that the absorbent articles can be individually packed in their own sub-encasements 220, ensuring that each article remains separate and independent within the outer encasement 200. This arrangement allows for individual access and handling of each absorbent article, providing convenience and versatility. It also enables selective removal or use of specific articles (for example article 100a) without disturbing the remaining packaged absorbent articles 100b. It is to be understood that it is also possible for two or more absorbent articles of the plurality 100 to be grouped together in a single sub-encasement 221 within the outer encasement 200 as for example shown in figures 3D, 3E, 3F. This grouping arrangement, encased by a subencasement, provides a practical and efficient way to pack and transport multiple absorbent articlesas a unit. It ensures stability and cohesion among the grouped articles, minimizing the risk of shifting or potential damage during transportation.

[0374] Fig.3B shows that the sub-encasements 220 are made from a second film have a thickness ts(also indicated in other figures). This thickness tsof the second film can be the same as the thickness of the outer film or can be different. In the latter case, it is noted that implementation of different thickness configurations between the sub-encasements and the outer encasements may promote certain benefits of the packaging system. As explained earlier, the thickness tscan be smaller than thickness t, for example wherein thickness tsis as about 50 micron and wherein thickness t is about 90 micron. In another embodiment thickness tscan be larger than thickness t, for example wherein thickness tsis about 90 micron and wherein the thickness t of the outer encasement is about 50 micron.

[0375] Fig.3C shows an exemplary embodiment of a plurality of absorbent articles 100 packed in a vacuum sealed package wherein each absorbent article 110a is packed in a vacuum sealed individual subencasement 220a. The use of vacuum-sealed sub-encasements 220a provide an airtight and secure environment for each absorbent article, preventing the entry of air, moisture, or contaminants that could potentially compromise their quality or effectiveness, for example in case of a breach in the outer encasement 200 during transport. In this manner, one ensures that the absorbent articles remain in a pristine condition until they are ready for use. In addition, individual sub-encasement 220a can be used by caregivers to easily and cleanly transport individual absorbent articles after removal from the outer encasement 200.

[0376] Additionally, vacuum sealing the sub-encasements 220a enhances the stability of the packaged absorbent articles 100 in the package 1 during transportation. By removing excess air and reducing the volume of each sub-encasement, the articles are held in a compressed manner, minimizing movement, shifting, or potential damage during handling and transit. This promotes efficient use of space within the package and reduces the risk of deformation or deficiencies that could occur during transport. Fig.3C further also shows the thickness t and tsof the outer encasement 20 and the subencasement 220 which may have the features and choice of configuration as explained earlier herein. It is worth noting that while vacuum sealing is preferred for all sub-encasements, it is not necessarily mandatory for every individual sub-encasement within the plurality of absorbent articles. Depending on specific requirements or considerations, certain sub-encasements may be exempt from vacuum sealing.

[0377] Fig.3D illustrates an exemplary embodiment of a vacuum sealed package containing a plurality of absorbent articles 100. In this configuration, the absorbent articles are grouped together and packed in group sub-encasements 221 within the outer encasement 200 of the package 1. The grouping of the absorbent articles 100 serves multiple purposes. Firstly, it facilitates organization and efficient utilization of space within the package. By arranging the articles in groups, they can be compactlypacked, reducing wasted space and maximizing the number of articles that can be accommodated in a single package. This is especially beneficial when transporting or storing a large quantity of absorbent articles. Additionally, grouping the absorbent has the benefit that less sub packaging (and optionally less sub sealing) is needed while still having the benefit of the sub-encasements 221 as they act as protective compartments for each group of articles, preventing them from coming into contact with each other and reducing the risk of potential damage or deformation. In addition, group sub-encasements 221 can be used by caregivers to easily and cleanly transport a group of absorbent articles after removal from the outer encasement 200.

[0378] Fig.3E presents an exemplary embodiment where a plurality of absorbent articles is packed within a vacuum sealed package 1 and notably the absorbent articles are grouped together and packed in vacuum sealed sub-encasements 221 (notably a difference with the non-vacuum sealed subencasements 221a of Fig.3D). Vacuum sealing the sub-encasements 221 adds not only an extra layer of protection and preservation for the absorbent articles but also causes an improved stability as the articles within the sub-encasements are more dense which facilitate ease of handling during transport. In the figure, the absorbent articles are grouped in pairs so that two absorbent articles are encased in a sub-encasement 221a within the outer encasement 200. The sub-encasements 221a in Fig.3E are vacuum sealed. The sub-encasements 221 in Fig.3D are not. A combination of both vacuum sealed and non-vacuum sealed sub-encasements is also possible. In addition, vacuum sealed subencasements 221 can be used by caregivers to easily and cleanly transport a group of absorbent articles after removal from the outer encasement 200.

[0379] Generally, the absorbent articles can be grouped in the sub-encasements, optionally vacuum sealed sub-encasements in several ways. For example, the absorbent articles can be arranged in sequential groups within each package. For example, a specific number of articles can be grouped together in a sub-encasement 221 or 221a. The absorbent articles can also be nested within each other, similar to nesting dolls. This grouping method involves placing articles inside other articles, optimizing space utilization and providing additional protection. For example, the articles may be folded in a V wherein the point of the V of one article is placed in the bottom of the V of another article.

[0380] Fig.3F shows an exemplary embodiment of a plurality of absorbent articles packed in a vacuum sealed package and a combination of non-sub-packed and sub-packed, grouped and non-grouped absorbent articles packed in vacuum and non-vacuum sealed sub-encasements.

[0381] Fig.4 and Fig.5 illustrate dimensionally stable elements 300a and 300b. Fig.4 shows an exemplary embodiment of a plurality of absorbent articles packed in a vacuum sealed package together with dimensionally stable elements, here a first dimensionally stable element 300a and a second dimensionally stable element 300b is shown. The absorbent articles 100 are packed in the outer encasement 200 of package 1. The outer encasement 200 may have any one of the features describedherein. Fig.4 further also shows that the absorbent articles 100 are placed in between the dimensionally stable elements 300a and 300b. This way, the articles can be pressed during vacuum sealing of the outer encasement 200. By pressing of the absorbent article 100a or the pressing of the plurality of absorbent articles 100, a package with less wrinkles can be achieved. Moreover, improved stacking performance and a more appealing appearance to customers can be achieved. The dimensionally stable elements 300 can have any suitable shape and can be placed anywhere within the outer encasement 200 to give some stability during the vacuum sealing. Preferably, the stable elements have a shape corresponding to the surface area of a folded absorbent article 100a as seen from a side view. During the vacuum sealing of the outer encasement 200, one can press the absorbent article 100a or press the plurality of absorbent articles 100 between a first guiding plate (not shown) and a second guiding (not shown) plate positioned outside of the outer encasement 200 for controlling the shape of the package without the need of the dimensionally stable elements 300a, 300b within the outer encasement, although they may be present. Preferably, the guiding plates have a shape corresponding to the surface area of a folded absorbent article as seen from a side view and / or have a shape corresponding to a dimensionally stable element 300a, 300b within the encasement 200. Preferably the first and second guiding plates are positioned at opposite sides of the outer encasement 200, respectively, and are moved towards each other prior to and / or during the step of vacuum sealing. Notably, more than two guiding plates can be provided.

[0382] Fig.5 shows an exemplary embodiment of a plurality of absorbent articles packed in a vacuum sealed package together with dimensionally stable elements and wherein the absorbent articles are sub packed in vacuum sealed sub-encasements. Notably, the dimensionally stable elements can be positioned in various ways with respect to the absorbent articles within the package 1. For example, adjacent positioning meaning that the dimensionally stable elements can be placed directly adjacent to the absorbent articles 100. This means that the elements are positioned in close proximity to the articles, either on one or both sides, providing support and stability. Another example is interspersed positioning meaning that the dimensionally stable elements can be interspersed among the absorbent articles. They can for example be placed between the articles, creating a stable structure and preventing excessive movement or shifting during transportation. In the example of Fig.4 and Fig. 5, the stable elements 200a, 300b are arranged between the plurality of the absorbent articles 100 and the outer encasement 200. In Fig.4 the absorbent articles 100 are orderly arranged the one next to each other. In Fig.5, each of the articles 100 are sub-encased, preferably in vacuum sealed subencasements 220.

[0383] Fig.6A shows an assembly 10 of a container 11 holding a plurality of vacuum sealed packages 1. Such assembly is beneficial for transporting large amounts of absorbent articles 100. Fig.6B shows an assembly of a container holding a plurality of vacuum sealed packages withdimensionally stable elements 300a, 300b. These elements cause improvements in the stacking of the packages.

[0384] Fig.7A and Fig.7D are schematic top plan views of exemplary embodiments of an absorbent article 100a, here in the form of a diaper. Fig.7B and Fig.7C are cross-sections of exemplary embodiments of an absorbent article which is well suited to be compressed in a vacuum package. It is clear to the skilled person that any other absorbent article may be beneficially vacuum packed. Fig.7D shows a configuration of an absorbent article 100a with a core 1000 having four channels 1400a, 1400b, 1400c, 1400d. The diaper 100a as shown has a liquid pervious topsheet 3000, a liquid impervious backsheet 2000. Absorbent material 1300 is positioned between the liquid pervious topsheet and the liquid impervious backsheet. Preferably, a bottom layer 8000 is placed between the absorbent material and the liquid impervious backsheet. The absorbent material comprises superabsorbent particles (also referred to as SAP) and cellulosic fluff pulp (also referred to as fluff) and is arranged such that one or more channels 1400a, 1400b are formed, wherein less absorbent material per surface area is present in the one or more channels compared to an area around the one or more channels. Preferably substantially no absorbent material is present in the one or more channels. It is particularly advantageous that the bottom layer 8000 is in contact with the absorbent material and has an average density as measured in a decompressed state between 20 and 400 kg / m3. The diaper may further comprise a capillary acceleration sheet 4000 which may have a basis weight between 5 and 55 g / m2, preferably between 8 and 50 g / m2, more preferably between 10 and 20 g / m2. The capillary acceleration sheet 4000 may take on any suitable shape. For example, the capillary acceleration sheet 4000 may follow more or less the contours of the absorbent core 1000. In other forms, the capillary acceleration sheet may comprise a rectangular shape regardless of the shape of the absorbent core 1000. In some forms, the capillary acceleration sheet may be longer in length than the absorbent core 1000 or shorter than the absorbent core 1000. In other forms, the capillary acceleration sheet 4000 may be positioned in a specific location on the absorbent core 1000.

[0385] Fig. 8A and Fig. 8B show cross-sectional views of an exemplary embodiments whereby a plurality of absorbent articles are packed in an air-impermeable outer encasement having a first film Fl, and another film F2. The first and second films Fl, F2 can be made according to the materials described herein. As shown, the first and second film Fl, F2, also referred to as barrier films, are sealed together via seal 43. The first film Fl forms a base 41, e.g. a base containing the absorbent articles, the second film F2 forms a cover 42 which is sealed to the base 43. While not shown, it is understandable that one or more dimensionally stable elements may be included in the package as shown in Fig. 8A to 9C.

[0386] Generally, it is preferred that the first barrier film (Fl) that forms the base (41) comprises multi layered barrier film; and, wherein the second barrier film (F2) that forms the top cover (42) comprisesa mono or multi-layered second barrier film (F2). At the location where the first and second barrier films are sealed, it is preferred that the first and second film each have the same type of thermoplastic layer (e.g. both having PE) that face each other. In this manner, fusing the layers together may be improved.

[0387] In a preferred embodiment, the first barrier film Fl and second barrier film F2 are each individually chosen from a coextruded film comprising PE / PA, PP / PA, PE / EVOH, PE / EVOH / PE, PP / EVOH / PP, PE / PA / PP or PE / PA / PE. The first barrier film Fl and second barrier film F2 may be made from the same materials or coextruded film or may be different, preferably and generally applicable herein, the first barrier film Fl and second barrier film F2 both comprise at least PE or PP for improved compatibility and sealing. According to an embodiment, and generally applicable herein, the first barrier film Fl and second barrier film F2 preferably both comprise a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and comprise a second material (M2) individually chosen from polyamide (PA) or ethylene vinyl alcohol (EVOH). In this case, it is preferred that the first materials (PE or PP) are included and arranged so that they face each other during sealing of the first and second barrier films Fl, F2. Understandably, the terms film and barrier film may be used interchangeably herein.

[0388] In this embodiment, the thickness t of the first barrier film Fl and the thickness t’ second barrier film F2 are each individually chosen from a value within the range of 5 - 500 micron, preferably 10 - 300 micron, more preferably 30 - 180 micron. Preferably, both thickness t and thickness t’ are at least 30 micron to ensure a desired vacuum seal which benefits hygiene and protection during transport. Generally, the absorbent articles have an absorbent core which is folded to have (at least one) C shape (see e.g. Fig. 8B) thereby having (at least) a first and second leg which are arranged parallel to the bottom of the base film Fl. In doing so, stacking can be improved which results in a more efficient transport. According to a preferred embodiment both the first film Fl and the second film F2 are chosen from a coextruded film both comprising PE / PA, PP / PA, PE / EVOH, PE / EVOH / PE, PP / EVOH / PP, PE / PA / PP or PE / PA / PE.

[0389] Preferably, and generally applicable herein, the coextruded film(s) for the first and second films Fl, F2, have a thickness (see e.g. thickness t and t’ in fig. 8A) individually chosen from the range of 20 - 150 micron. In this manner, a desired barrier can be provided ensuring the vacuum conditions which can improve transport efficiency.

[0390] To (further) improve transportation, it is further desired that vacuum sealed package have a predictable and consistent shape to allow for improved stacking during transport. Inventive insights and testing have provided that improved stacking can be achieved by arranging the absorbent articlesin a certain way, specifically by folding the absorbent cores and arranging the absorbent articles in a certain way with respect to each other. Thereto, it is generally preferred that the package is extending along x , y , z dimensions; the package comprising a top wall 51 (e.g. formed by the second film F2 as described herein) and bottom wall 52 (e.g. formed at least partially by the first film Fl as described herein). The top and bottom wall are substantially parallel to each other and parallel to the x y plane, thereby defining a width and a length of the package; wherein the top wall 51, preferably comprising the second barrier film F2 as described herein, and bottom wall 52, preferably comprising the first barrier film Fl, as described herein, are connected via one or more sidewalls 53 which extend in the z direction thereby defining a height of the article; wherein the height is smaller than the width and / or the length; wherein the plurality of absorbent articles 100 each comprise absorbent core 1000 folded such that such that the absorbent cores are folded according to a C shape 60 with a first and second leg 61, 62, whereby the legs of each C shape are arranged substantially parallel to the top and bottom wall 51, 52. Advantageously, stacking can be improved by arranging the absorbent core 1000 as described herein, in particular in case of a core comprising fluff and / or sap. Namely, it is believed that the fluff and / or sap may increase stability during the vacuum sealing which aids in achieving a desired uniform shape for improved stacking when arranged as described herein.

[0391] Fig. 8B illustrates, as seen from a cross sectional view, an example whereby the absorbent articles are folded such that their absorbent core 1000 (indicated with the dashed lines) are folded in a C shape 60 having a first and second legs 61, 62, whereby the legs of each C shape are arranged parallel to the bottom wall 52 of the base film (typically the first barrier film Fl). Improved transport can thereby be achieved due to a more uniform shaping between the packages.

[0392] Fig. 8C shows a similar example as Fig. 8B with the difference that the second film F2 is arranged as a coating 820 on paper substrate 810. By using a paper substrate 810, wrinkles may be avoided and the paper substrate may carry printed information which assists in customer recognition. The paper substrate 810 may be a kraft paper. In particular, a kraft paper comprising a thermoplastic coating that is forming the second film, the thermoplastic material is fused to the first film at an outer perimeter of the first film, wherein the plurality of absorbent articles are encased and held between the first and second film.

[0393] Fig.8D shows a similar example as Fig. 8C with the difference that a sub encasement 220 is shown, the sub-encasement may be a bag (as illustrated) or a strap. The sub-encasement 220 may be printed with information. Furthermore, by using the sub-encasement 220, production can be improved. Fig. 9A illustrates a perspective view of articles folded to have a C shape, the view shows that package is extending along x , y , z dimensions. Understandably, the articles can be folded in various manners to have a C shape, preferably the articles are folded to have at least 1 folding line separating a first leg and second leg. Surprisingly, by arranging the folded articles such that the first leg andsecond leg are parallel the bottom wall 52 of the base film (see film Fl), improved stacking behavior can be achieved, in particular in case the base film forms a container defining a volume or cavity in which the articles are placed. The articles may be stacked in groups placed in different rows next to one another as e.g. shown in figure 9A, in such a case it is preferred that the articles are folded and arranged such that the legs are parallel to the bottom wall 52 of the base film.

[0394] The package has an outer encasement 200 comprising a top cover 42 made from the second barrier film F2 forming the top wall 51 and comprises a base 41 made from the first barrier film Fl, the package has bottom wall 52 which comprises the first barrier film Fl. Fig. 9A illustrates an exploded view, Fig. 9B shows that the first film Fl is sealed via sealing 43 (indicated with dashed lines) to the second film F2.

[0395] Fig. 9B shows that the top cover 42 can be sealed to the base 41 via sealing 43 (as shown in Fig.

[0396] 9B). Understandably, the thickness (not indicated) of the first and second barrier films Fl, F2 as shown in Fig. 8B is preferably as described herein.

[0397] Fig. 9A and 9B further illustrates that the package 1 may be provided placing the plurality of absorbent articles 100 on a first film Fl. Then, a second film F2 may be provided and sealed to the first film Fl, e.g. via a seal 43 (see fig. 9B), to encase the plurality of absorbent articles. The plurality of absorbent articles 100 are each arranged according to a C shape 60 whereby the plurality of absorbent articles are placed such that the legs 61, 62 are parallel to the first film Fl on which the articles are placed. Preferably, the first film Fl is shaped to have a hollow space 80 to receive the plurality of absorbent articles 100; and wherein the plurality of absorbent articles are placed within said hollow space before the second film F2 is sealed to the first film Fl thereby closing the hollow space. In this manner, a package 1 with a more uniform and desired shape can be achieved which allows for an improved stacking behavior which allows for improved transport.

[0398] According to an embodiment, as for example shown in Fig. 9A, there is provided a vacuum sealed package 1 containing a plurality of absorbent articles 100, preferably diapers, said package comprising an air-impermeable outer encasement 200 encasing the plurality of absorbent articles 100, wherein the outer encasement 200 is vacuum sealed such that the absorbent article or the plurality of absorbent articles 100 are held in the outer encasement 200 in a compressed manner; the air-impermeable outer encasement 200 comprises a first film Fl having a thickness t ranging between 5 - 500 micron (e.g. as a base)(e.g. 300 micron), preferably in the range of 50 - 500 micron, and a second film F2 (e.g. as a cover), having a thickness t which is smaller than the thickness of the first film, preferably a thickness in the range of 30 - 180 micron (e.g. 90 micron). Advantageously, an improved package can be provided with efficient use of raw materials for the films. The first film Fl and the second film F2 are preferably multi-layer films. Advantageously, multi-layer films may benefit improved strength and prolonged maintenance of internal pressure within the package.Fig. 9C further shows that the package may further be provided with a band 320 for increased protection which benefits stacking behavior. The band 320 is arranged around the vacuum sealed package 1. Surprisingly, the band 320 may further improve transport due to an added assurance that a desired packing shape is maintained, e.g. in case the vacuum pressure releases. Generally applicable herein, any band or banding element 320 for securing and / or bundling articles can be used. Preferably, a band comprising a flexible substrate, wherein the substrate is formed from a paperbased material. The paper-based material may be selected from a variety of paper types, including but not limited to kraft paper, bleached or unbleached pulp paper, recycled paper, or combinations thereof, and may be treated or coated to enhance certain properties such as strength, flexibility, or printability. The band or banding element 320 may further comprise an adhesive (not shown) applied to at least a portion of the substrate, enabling the banding element to be affixed to itself or to the outer encasement 200. The adhesive may be a pressure-sensitive adhesive, a heat-seal adhesive, or any other suitable adhesive known in the art. In some embodiments, the banding element may be prescored or perforated to facilitate tearing or separation. The banding element may be printed with indicia, such as branding, product information, or decorative designs. Furthermore, the banding element may be laminated with other materials, such as polymeric films, to improve its durability or provide a moisture barrier. The banding element may be applied manually or automatically using suitable packaging machinery. In addition, or as an alternative, to the banding element, a paper substrate may be arranged inside the outer encasement wherein said paper substrate is provided with printed information, in this case it is preferred that the outer encasement is transparent such that the printed information is visible from the outside.

[0399] Fig. 9D further shows an example similar to Fig. 9B with the difference that a finger lift feature 900 is provided. The finger lift feature 900 is arranged to facilitate unpacking of the package by facilitating tearing of the second film F2. The finger lift feature may be provided by any suitable manner. For example, by ensuring that the seal 43 is arranged as a sealing line located at a large enough distance from the outer edge (as is better visible from Fig. 9E and 9F) such than an unsealed area between the outer edge and the sealing line 43 can function as the finger lift. In addition, or as alternative, the finger lift can be provided by a finger lift tab. It may also be possible that a nonthermoplastic substrate (not shown) is arranged between the first and second film near the outer perimeter to ensure that the first and second film are not sealed there and to provide for the finger lift feature 900. The finger lift feature may be arranged at a corner and / or may extend over the whole width dimension of the second film (y-dimension in Fig. 9D). Production wise, a non-thermoplastic substrate (not illustrated) may be arranged between adjacent tray-shaped cavities (see Fig. 10B) to provide for the finger lift feature.Fig. 9E shows an example of a vacuum sealed package holding absorbent articles 100, which may be chosen from diapers, sanitary napkins, and adult incontinence products, absorbent hygiene products, or combinations thereof. The articles 100 are held in a compressed manner. The first film Fl may have a thickness t ranging between 5 - 500 micron, preferably between 15 - 500 micron and is arranged as a coating 820 on a paper substrate 810. The coating 820 as shown is facing towards the second film F2 and the second film is sealed via seal 43 to the coating 820. By using a paper substrate 810, printing on the package may be improved. In this manner, customer recognition may be improved. Furthermore, by using a paper substrate, wrinkles may be avoided. Understandably, the first film Fl and / or the second film F2 may be arranged on a paper substrate as a coating. The films may be sealed together via seal 43. As shown in Fig. 9E the first film Fl is arranged as coating 820 on paper substrate 810 and the second film F2 is sealed thereto via seal 43. The coating may comprise a thermoplastic material, for example a material chosen from the group consisting of: polyethylene (PE), polypropylene (PP) or combinations thereof, the coating may be sealed to the second film, preferably wherein the second film comprises the same thermoplastic material.

[0400] Fig. 9F shows an example wherein the package comprises a dimensionally stable carrier layer 950 in the form of a plastic sheet, which is typically thicker than the first film. As shown, the first film Fl is adhered to said plastic sheet to encase the plurality of absorbent article. The plastic sheet may have a thickness tgso in the range of 0.5 - 2 mm. By using a dimensionally stable carrier layer, the shape after vacuum sealing as compared between multiple packages is more uniform or predictable. While not shown in any of the Fig. 8B, Fig. 9A-9F or Fig. lOA-Fig. 12, it is understandable that a sub-encasement can be used for the benefits as described herein.

[0401] Packing Machine

[0402] In principle, any suitable vacuum packaging machine may be used for packaging the absorbent articles (preferably chosen from diapers, sanitary napkins, and adult incontinence products, absorbent hygiene products, typically including feminine hygiene garments, baby diapers and pants, adult incontinence garments and the like) as described herein. The method may be performed by aid of a vacuum packaging machine comprising one or more vacuum chambers, e.g. a single vacuum chamber (as shown in Fig. 11 A or as schematically indicated by vacuum chamber unit “V” in Fig.

[0403] 10A) or at least two vacuum chambers arranged on a rotating carousel (as shown in Fig. 11B). The carousal may be configured to provide at least 2 vacuum chambers, preferably at least 3 vacuum chambers, or e.g. 6 vacuum chambers (as shown in Fig. 11b).

[0404] Fig. 10A to Fig. 11B shall now be used to explain a preferred method that is performed by aid of a thermoforming vacuum packaging machine. The absorbent articles are packed along the production line (via the machine direction, indicated with “MD”). Fig. 10A shows that a bottom film (Fla) is fed by a supply roll to form the first film (Fl) (which may have one or more of the features asdescribed herein, in particular in view of material choice and / or thickness). The thickness of the bottom film supplied is preferably in the range of between 15 - 500 micron, the bottom film is preferably a multi layered film. In this manner, improved strength and prolonged holding of the articles in the compressed manner can be provided. Generally, it is preferred that the bottom film has a thickness t of at least 17 micron, preferably at least 20 micron, even more preferably at least 25 micron. In this manner, package performance can be increased. The thickness of the top film and / or bottom film used for respectively forming the second and first film may be measured on the supply roll (e.g. as indicated by the manufacturer).

[0405] Generally applicable herein, the bottom film (which forms the first film of the final package) may be made from a coextruded film chosen from one of the following: PE / PA, PP / PA, PE / EVOH, PE / EVOH / PE, PP / EVOH / PP, PE / PA / PP or PE / PA / PE. Preferably, the bottom film is a coextruded film chosen from PE / PA / PP or PE / EVOH / PP, preferably PE / PA / PP. The top film (which forms the second film of the final package) may be made from the same materials, or may be made from different materials as long as one material of the top film corresponds to a material of the bottom film (for enhanced compatibility and sealing behavior). The top film may also be present as a coating on a paper substrate, in this case, the coating faces towards the bottom film to improve sealing.

[0406] Generally applicable, it is preferred that the top film (forming the second film of the final package) comprises a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from ethylene vinyl alcohol (EVOH), polyvinyl chloride (PVC), polyester (PET), polyamide (PA). The top film (forming the second film) preferably comprises a first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from ethylene vinyl alcohol (EVOH), polyvinyl chloride (PVC), polyester (PET), polyamide (PA). Preferably, the first material (Ml) of the top film is the same as first material (Ml) of the bottom film. In this manner, improved fusing may be achieved which improves package performance. According to an embodiment, the bottom film is a multi-layered barrier film (Fl) having a thickness of at least 20 micron, preferably at least 30 micron, e.g. in the range of 30 - 500 micron, e.g. 300 micron, and wherein the mono or multi-layered second film (F2) of the second film has a thickness which is the same or which is smaller than the thickness of the first barrier film (Fl), preferably wherein thickness t’ is at least 20 micron. By choosing a smaller thickness and / or less layers, efficient use of raw material may be improved.

[0407] According to a preferred embodiment, and generally applicable, the first film (Fl), e.g. as a base, having a thickness t ranging between 15 - 500 micron; and the second film (F2), e.g. as a cover, has a thickness t’ in the range between 5 - 450 micron, wherein the second film (F2) is preferably smaller than the first film (Fl). By having the second film (F2) designed to be smaller than the first film (Fl) an improved balance between product durability and use of raw material can be achieved.As shown, the bottom film (Fla) is fed from a first supply roll into a thermoforming station 130 which heats and shapes the bottom film such that said film is thermoformed and shaped to have a tray-shaped cavities 131. A picture of an example of the tray-shaped cavities 131 is shown by Fig.

[0408] 10B. Preferably, a plurality of tray-shaped cavities 131 are formed at once to increase production efficiency. To increase loading capacity, it is preferred that at least two tray-shaped cavities are thermoformed and located adjacently to each other as seen over the width direction of the bottom film. This is then typically repeated over the length direction of the bottom film (which equates with the machine direction). After the tray-shaped cavities 131 are formed, the plurality of absorbent articles 100 are deposited into the tray-shaped cavities. At least 2, 3 to for example up to 15 or even up to 25 absorbent articles may be deposited into one tray. After the trays are filled with absorbent articles, a top film may be provided to form the second film (which may have one or more of the features as described herein, in particular in view of material choice and / or thickness). As shown, the top film (F2a) is fed from a second supply roll to form the second film (F2) above the filled trayshaped cavities. Fig. 10A further illustrates that, after filling the tray shaped cavities, that a vacuum chamber 132 is used for sealing a top film (F2a) (as the second film (F2)) to the tray-shaped cavities 131 made from the bottom film Fla and evacuating air from the tray-shaped cavities 131, such that the absorbent articles 100 are held in a compressed manner. The machine further comprises a cutting station 134 for cutting and separating the filled tray shaped cavities into individual packages to obtain individual packages 135 wherein absorbent articles are held in a compressed manner.

[0409] Understandably, the individual packages 135 may correspond to the packages as described above (e.g. Fig. 9B). Then, optionally a discharging step may be performed so that the finished individual packages, e.g. for further handling. The further handling may for example include packing the individual packages in a box (or any other suitable container), e.g. as illustrated by Fig. 6A. In this manner, an increased amount of absorbent articles per unit of volume can be transported. This increased density of packing results in logistical gains, meaning improvements in the efficiency and cost-effectiveness of transportation and storage.

[0410] The cutting performed in the illustrated method of Fig. 10A (see cutting station 134, marked with “C”, after the vacuum chamber marked with “V”) is further exemplified by Fig. 10D which shows that the tray shaped cavities formed by the thermoformed base film (Fl) may be separated by cutting. While the cutting is shown with a scissor icon (fig. 10D), it is understandable that any suitable cutting technique can be used.

[0411] Fig. 10B, illustrates a picture of an example of tray-shaped cavities in which absorbent articles are placed (schematically illustrated) and Fig. 10C shows a potential cross section through section line X-X of Fig. 10B. These figures shall now be used to explain the preferred orientation to place the plurality of absorbent articles with respect to the bottom of the tray shaped-cavity. Namely, is wassurprisingly found that the shape of the final article could be improved significantly by choosing the orientation of the absorbent articles that are deposited into the tray-shaped cavities. With other words, the first barrier film (Fl) that forms the base 41 forms a hollow space in which the plurality of absorbent articles are placed. Generally, the absorbent articles to be packed, typically feminine hygiene garments, baby diapers or baby pants, adult incontinence garments, share the feature of having an absorbent core, typically an absorbent core comprising fluff and / or SAP. As shown in fig.

[0412] 10C which represents a potential cross section taken along section line X-X in fig. 10B, the absorbent cores of the absorbent articles are preferably individually folded to have at least one C shape 60 with a first and second leg 61, 62. The absorbent articles are placed in the tray-shaped cavities such that the legs 61, 62 of the C shape 60 are arranged substantially parallel to the bottom wall 52. Such orientation has been found to improve the outcome of the production line wherein the final individual packages have a more desired shape. For example, by placing the articles and their folded cores according to the orientation as described herein, a package as e.g. shown by Fig. 9B can be obtained. Understandably, when referring to the absorbent core, in particular the absorbent core of e.g. feminine hygiene garments, baby diapers or baby pants, adult incontinence garments, the core is typically positioned between a liquid pervious topsheet and a liquid impervious backsheet, the absorbent core may comprise fluff and / or SAP.

[0413] Once the top film is sealed (e.g. as shown in Fig. 10D) and optionally cut (if needed), the package has a top wall 51 and bottom wall 52 extending substantially parallel to each other and parallel to the x y plane. The top wall 51 and bottom wall 52 are connected via one or more sidewalls 53, preferably due to the thermoforming, which extend in the z direction.

[0414] While not shown in Fig. 10B, a non-thermoplastic substrate may be arranged between adjacent trayshaped cavities for the provision of a finger-lift feature, namely the non-thermoplastic substrate will not be sealed and can thereby facilitate the opening of the package.

[0415] Fig. 10B further shows that the first film Fl is pre-shaped into tray-shaped cavities. The first film is provided in machine direction. As shown, at least two tray-shaped cavities are provided along crossmachine direction. Advantageously, production performance can thereby be improved since a higher output of vacuum packages per unit of time can be provided, which benefits production efficiency. While Fig. 10B, may not illustrate the use of a sub-encasement, however it is to be understood that using a sub-encasement to encase the plurality of absorbent articles 100 before placing them into a tray shaped cavity is beneficial. An example of a sub-encasement 220 is shown in Fig. 8D. Generally herein, by using a sub-encasement, such as a bag or a strap, before vacuum sealing the outerencasement, production can be improved since risk of defects can be reduced, in particular because the plurality of absorbent articles can be better handled before placing the articles into their allocated pre-shaped cavity. The sub-encasement 220, being a bag may also be referred to as a pre-bag. Thepre-bag may be made from a LDPE material and may be perforated, e.g. the pre -bag may be an LDPE bag with a perforations arranged in a grid, such as a 50x50 mm grid.

[0416] According to an embodiment, as for example illustrated by Fig. 8D, there is provided a vacuum sealed package 1 containing plurality of absorbent articles 100, here in chosen from diapers, the package comprising an air-impermeable outer encasement 200 encasing the plurality of absorbent articles. The outer encasement 200 is vacuum sealed such that the plurality of absorbent articles 100 are held in the outer encasement 200 in a compressed manner. As shown by Fig. 8D, the air-impermeable outer encasement 200 has a first film Fl, typically having a thickness t ranging between 5 - 500 micron, preferably between 15 - 500 micron. As further shown by Fig. 8D, the air-impermeable outer encasement 200 has a second film (F2), having a thickness t’ in the range between 5 - 450 micron. By using two films, the package process may be facilitated. Generally, the plurality of absorbent articles 100 are held between the first and second film. The second film (F2) may be formed as a coating on paper substrate 810. In particular, a kraft paper may be used that comprises a thermoplastic coating forming the second film which is fused to the first film. As further shown by Fig. 8D, the plurality of absorbent articles 100 are encased by a sub-encasement 220 within the outer encasement 200. The sub-encasement 220 may be a bag, preferably a bag comprising one or more perforations for allowing air to pass through. In doing so, the vacuum sealing may be improved, in particular the first film is used as a base or bottom foil and the second film is used as a cover or top foil.

[0417] Fig. 10A shows an example where a plurality of absorbent articles 100 are placed on a first film (Fl), e.g. as formed from a bottom film (Fla). Then, the second film (F2), e.g. from a top film, is vacuum sealed by aid of the vacuum chamber 132 to the first film, e.g. by aid of a seal 43 (as shown in Fig.

[0418] 9B), to encase the plurality of absorbent articles. Preferably, the first film (Fl) is pre-shaped beforehand by aid of the thermoforming station 130, which shapes the bottom film Fla via thermoforming before the plurality of absorbent articles 100 are placed. Preferably, the first film (Fl) is pre-shaped into tray-shaped cavities (e.g. as shown by fig. 10B). Once shaped, then articles are placed such that the legs 61 , 62 are parallel to the bottom (or bottom surface) of the tray shaped cavity. The packages may be vacuum sealed by aid of a thermoforming vacuum packaging machine commercially available from Variovac.

[0419] Fig. 11A and Fig. 11B further illustrate potential production set-ups. Fig. 11 A illustrates a cross sectional view of a vacuum chamber for vacuum sealing the outer encasement 200 which encases the plurality of absorbent article 100. To improve production efficiency, multiple vacuum chambers may be used, e.g. two chambers (available via Sampack) or e.g. six chambers on a carousel 150 (available via Amcor). An example of a carousel arrangement is shown by Fig. 1 IB. The carousel arrangementmay further increase production efficiency. The multiple vacuum chambers may be arranged on a carousel, e.g. as show in fig. 1 IB.

[0420] Fig. 11B shows an example of a production line to produce vacuum sealed packages. The figure shows that a plurality of absorbent articles 100 have been loaded into non sealed bags 151 comprising the first film (Fl). Thus, the bags preferably have a wall thickness (corresponding to the thickness of the first film) in the range of 15 - 500 micron, preferably 20 - 500 micron, e.g. 300 micron. The loaded non-sealed bags are transported along the machine direction (as indicated by the “MD” arrows) to the carousel 150 in order to be sealed by aid of the vacuum chambers. More in particular, the loaded non-sealed bags 152 are brought into the vacuum chambers of the carousel 150 to be vacuum sealed to obtained loaded sealed bags that hold the absorbent articles 100 in a compressed manner. The vacuum chambers (some of which are indicated with reference numeral 155) on the carousel are used for sealing the loaded non-sealed bags to obtain sealed loaded bags, while the carousel continues to rotate. Once sealed, the bags are discharged from the rotating carousel so as to obtain packages with an air-impermeable outer encasement 200 that hold a plurality of absorbent articles 100 in a compressed manner. Understandably, also in the example shown by Fig. 11B, the material of the bag or first film is preferably according to the material choice as describe herein. In particular, the choice for the bag material may be chosen from a coextruded film chosen from one of the following: PE / PA, PP / PA, PE / EVOH, PE / EVOH / PE, PP / EVOH / PP, PE / PA / PP or PE / PA / PE, preferably a coextruded film chosen from PE / PA / PP or PE / EVOH / PP.

[0421] In the illustrated methods, it is generally preferred that the vacuum sealing the air-impermeable outer encasement comprises evacuating air until an internal pressure within the an air-impermeable outer encasement reaches a pressure within the range of 50 mbar to 550 mbar, more preferably within the range of 70 mbar to 450 mbar, such as 100 mbar or 250 mbar. Likewise, in the illustrated packages, it is preferred that the air-impermeable outer encasement is vacuum sealed to an internal pressure within the air-impermeable outer encasement within the range of 50 mbar to 550 mbar, and more preferably wherein the air-impermeable outer encasement is vacuum sealed to an internal pressure within the air-impermeable outer encasement within the range of 70 mbar to 450 mbar, such as 100 mbar or 250 mbar. By utilizing the pressures as described herein, product performance, e.g. after unpacking, may be ensured, additionally by limiting the pressure to at low end point of 50 mbar, preferably 70 mbar, risk of manufacturing defects can be reduced, in particular when working with the thickness of the outer encasement as described herein.

[0422] Referring to Fig. 12, a method and setup is shown that can be used for measuring the inside pressure of a vacuum-sealed package. The measurement protocol involves affixing a rubber sealing strip (R) to the external surface of the package, in particular the air-impermeable outer encasement. This sealing strip is designed to prevent unwanted air passage into or out of the package during the pressuremeasurement. A needle (N), is operatively connected to a pressure gauge, is then punched or inserted through the adhered sealing strip R and subsequently through the air- impermeable outer encasement of the package until its tip reaches the internal environment of said package. The pressure gauge (G) (commercially available via WIKA), upon establishing fluid communication with the interior of the package via the needle N, illustrates or displays the internal pressure, typically measured in millibars (mbar). This setup allows for an accurate determination of the vacuum level or residual pressure within the sealed package.

[0423] EXAMPLES

[0424] Example 1 ( material choice of the films )

[0425]

[0426]

[0427] Table 1

[0428] In the table above, the following evaluation criteria has been used: — : Not good; Poor; 0: Neutral; +: Good; ++: Better. To arrive at the indicated criteria, a contemplation has been made taking into account the following matters: efficient use of raw materials, capacity to recycle and maintenance of the vacuum over a prolonged period of time. Additionally, the logistical gain has been assessed and more units per transport pallet could be transported.

[0429] Generally, it was found that a film (e.g. the first film) with a thickness t of at least 17 micron, preferably at least 20 micron, even more preferably at least 25 micron, e.g. 300 micron, was found to be beneficial in view of maintaining prolonged article compression. In view of improved use of raw material, another film (e.g. the second film) may be used (e.g. as a cover) to reduce the amount of the thicker first films (e.g. as a base).

[0430] Generally, the barrier effects can be improved by using multi-layer film(s) for the encasement. Thus, preferably, the film(s), e.g. the first and second films Fl, F2 of the outer encasement are preferably both multi-layered. Generally, in case a multi-layer of at least three layers is used, then itis preferred that at least a PE or PP material is used as the outer layer. It is believed that such placement benefits sealing. PA or EVOH may then be used as a middle layer.

[0431] Example 2 ( vacuum packaging techniques )

[0432] In the following example, several techniques have been reviewed to asses the vacuum packaging of diapers.

[0433]

[0434] Table 2

[0435] Inventive insights during research have given the inventive findings as noted in the table above.

[0436] Example 3 ( internal pressure )

[0437] The following example shall now be used to explain the testing of the internal pressure (typically expressed in mbar) in view of logistical gain (e.g. how many articles can be transported per truck at once) and performance. In the tested examples, test packages with 10 diapers have been vacuum sealed until a certain pressure within the package was reached, typically in the range of 50 mbar to 550 mbar.

[0438]

[0439] Table 3

[0440] It was found that more articles can be transported at once when packed in a vacuum sealed package resulting in a logistical gain. For example, with test 5, more articles (140 k) could be transportedwhen compared to test 1 with non-vacuum sealed samples (around 80k). Inventive insights during research have further provided that by carefully choosing and regulating the inside pressure during vacuum sealing, that an improved balance between logistical gain and product performance (e.g. the performance of the diapers after being unpacked) and manufacturing performance (e.g. how easy the packages can be made and / or without any defects) can be achieved. Furthermore, by using an inside pressure within the range of 70 mbar to 450 mbar, such as 100 mbar or 250 mbar was found to be favorable in view of performance, including product and manufacturing performance. Further insights, and generally applicable herein, have provided that by using an air-impermeable outer encasement that has a thickness t of at least 17 micron, that packaging performance can be increased, in particular when combined with the pressures as described herein.

[0441] Example 4 ( sub encasement )

[0442] The following test examples shall now be used to illustrate improved production as a result of using sub-encasements (e.g. strap of bag) to package and contain the plurality of absorbent articles before the absorbent articles are encased and vacuum sealing in the outer encasement. More in particular, during testing, the plurality of absorbent articles where put into sub-encasements (e.g. strap of bag) before being placed into tray shaped cavities (e.g. see FIG. 10B).

[0443]

[0444] Table 4

[0445] It was found that is beneficial to contain the absorbent articles into a sub-encasement before vacuum sealing the outer encasement, namely the risk of improper sealing with the second film (F2) can be reduced as a result of using the sub-encasement that contains and handles the plurality of absorbent articles. Namely, it helps to ensure avoid loose components of the absorbent articles being present in between the first film and the second film during sealing, since this would impact a desired sealing of the first and second film. In doing so, risk of defects is reduced which is beneficial for the manufacturing performance. Hence, it is generally desired herein that the plurality of absorbentarticles are encased by a sub-encasement before being encased within the outer encasement. Generally applicable herein, the sub-encasement can be chosen from: a strap or a bag. The bag may also be called a pre-bag. The strap may be a plastic strap or paper strap. The bag may be plastic bag. An example of a sub-encasement is shown in, among others, FIG. 8D. When using a bag for the sub-encasement, it is beneficial to use a bag with one or more perforations, in this manner the vacuum sealing of the outer encasement may be facilitated. The sub-encasement, preferably being a bag, may have a thickness in the range of 10 to 45 micron, e.g. 20, 30 or 40 micron.

[0446] The skilled person will appreciate based on the above description that the invention can be embodied in different ways and based on different principles. The invention is not limited to the above described embodiments. The above described embodiments and the figures are purely illustrative and serve only to increase understanding of the invention. The invention will not therefore be limited to the embodiments described herein, but is defined in the claims.

Claims

CLAIMS1. A method for vacuum packaging a plurality of absorbent articles (100), such as diapers, the method comprising:- encasing the plurality of absorbent articles (100) in an air-impermeable outer encasement (200);- vacuum sealing the air- impermeable outer encasement such that the plurality of absorbent articles are held in a compressed manner;- wherein the air-impermeable outer encasement (200) comprises: a first film (Fl), e.g. as a base, having a thickness t ranging between 5 - 500 micron, preferably between 15 - 500 micron; and optionally a second film (F2), e.g. as a cover, having a thickness t’ in the range between 5 - 450 micron.

2. The method of claim 1, wherein the method is performed by aid of a vacuum packaging machine comprising one or more vacuum chambers, e.g. a single vacuum chamber or at least two vacuum chambers arranged on a rotating carousel, wherein the vacuum packaging machine is a thermoforming vacuum packaging machine that comprises a thermoforming station, and wherein the method comprises using the thermoforming station for pre-shaping the first film before vacuum sealing the air-impermeable outer encasement, preferably for pre-shaping the first film to form trayshaped cavities.

3. The method of claim 1 or 2, wherein the encasing comprises:- placing the plurality of absorbent articles (100) on a first film (Fl);- providing a second film (F2) and sealing the second film to the first film, e.g. via a seal (43), to encase the plurality of absorbent articles;wherein the first film (Fl) is shaped to have a hollow space (80) to receive the plurality of absorbent articles; and wherein the plurality of absorbent articles are placed within said hollow space before the second film (F2) is sealed to the first film (Fl) thereby closing the hollow space; and / or wherein the first film (Fl) has a thickness in the range of 30 - 450 micron and wherein the second film (F2) has a thickness in the range of 30 - 450 micron, preferably wherein the thickness of the second film (F2) is smaller.

4. The method according to any one of the previous method claims, wherein the plurality of absorbent articles each comprise a liquid pervious topsheet, a liquid impervious backsheet and absorbent material positioned between the liquid pervious topsheet and the liquid impervious backsheet.

5. The method according to any one of the previous method claims, wherein encasing the plurality of absorbent articles comprises:- placing the plurality of absorbent articles (100) on a first film (Fl), e.g. a bottom film; - providing the second film (F2), e.g. a top film, and sealing the second film to the first film, e.g. via a seal (43), to encase the plurality of absorbent articles.

6. The method of the previous claim:- wherein the first film (Fl) is pre-shaped via thermoforming before the plurality of absorbent articles are placed; preferably wherein the first film (Fl) is pre-shaped into a tray-shaped cavity, and wherein the plurality of absorbent articles are encased within a sub-encasement (220), whereafter said sub-encasement (220) encasing the plurality of absorbent articles is placed into the tray shaped cavity, whereafter the second film is provided and whereafter the vacuum sealing is performed.

7. The method of the previous claim:- wherein the first film (Fl) is pre-shaped into tray-shaped cavities; preferably wherein the first film is provided in machine direction, and wherein at least two tray-shaped cavities are provided along cross-machine direction.

8. The method of any of the previous three claims, wherein the plurality of absorbent articles (100) are folded to have a C shape (60) having at least a first and second leg (61, 62), whereby the plurality of absorbent articles are placed such that the legs (61, 62) are parallel to the first film (Fl) on which the articles are placed, preferably parallel to a bottom of a tray shaped-cavity in which the absorbent articles are placed.

9. The method according to any of the previous claims, wherein the method comprises a plurality of steps, e.g. as the executed by aid of a thermoforming packaging machine, wherein said plurality of steps comprise:(a) optionally, feeding a bottom film (Fla) to form the first film (Fl) into a thermoforming station (130);(b) thermoforming said first film (Fl) into tray-shaped cavities (131);(c) depositing a plurality of absorbent articles (100) into the tray-shaped cavities to obtain filled tray-shaped cavities in which absorbent articles (100) are deposited;(d) feeding a top film (F2a) to form the second film (F2) above the filled tray-shaped cavities;(e) sealing said top film (F2a) as the second film (F2) to the tray-shaped cavities (131) comprising the first film (Fl) and evacuating air from the tray-shaped cavities (131), such that the absorbent articles (100) are held in a compressed manner;(f) cutting into individual packages (135) to obtain individual packages wherein absorbent articles are held in a compressed manner ; and(g) optionally discharging finished packages for further handling.

10. The method of the previous claim,wherein the bottom film (Fla) has a thickness in the range of 20 - 500 micron, e.g. 300 micron.

11. The method of any of the previous two claims,wherein the top film (F2a) has a smaller thickness than the bottom film (Fla).

12. The method of the previous claim,wherein the top film (F2a) has a thickness in the range of 5 - 450 micron, preferably 10 - 300 micron, more preferably 30 - 180 micron, e.g. 90 micron.

13. The method according to any of the previous four claims,wherein the top film (F2a) and bottom film (Fla) are chosen from a coextruded film chosen from one of the following: PE / PA, PP / PA, PE / EVOH, PE / EVOH / PE, PP / EVOH / PP, PE / PA / PP or PE / PA / PE, preferably a coextruded film chosen from PE / PA / PP or PE / EVOH / PP, preferably PE / PA / PP; and preferably chosen such that at least one thermoplastic polymer, e.g. PE or PP, of the top film corresponds to a thermoplastic polymer, e.g. PE or PP, of the bottom film, and wherein the method comprises sealing the corresponding thermoplastic polymers, e.g. PE to PE or PP to PP, together.

14. The method of any of claims 3 - 13 , wherein the tray-shaped cavities are shaped to comprise a bottom wall (52) and sidewalls (53), wherein the absorbent articles each comprisean absorbent core (1000) folded to have at least one C shape (60) with a first and second leg (61, 62); wherein the method comprises:depositing the absorbent articles into the tray-shaped cavities such that the legs of each C shape are arranged substantially parallel to the bottom wall (51, 52) of the respective tray-shaped cavity in which the article is deposited.

15. The method of claim 2, wherein the one or more vacuum chambers include a plurality of vacuum chambers that are arranged on a carousel.

16. The method of the previous claim, wherein the method comprises the steps of:providing a plurality of absorbent articles loaded into non-sealed bags (151) comprising the first film (Fl) to obtain loaded non-sealed bags;placing the loaded non-sealed (151) bags into the vacuum chambers of the carousel; sealing the loaded non-sealed bags to obtain sealed loaded bags (152), said sealing by aid of the vacuum chambers arranged on the carousel while the carousel continues to rotate; discharging the sealed loaded bags from the rotating carousel so as to obtain packages with an air-impermeable outer encasement that hold a plurality of absorbent articles in a compressed manner.

17. The method according to any of the previous claims,wherein the thickness t of the first film is in the range of 20 - 350 micron and wherein the first film comprises a material chosen from the group consisting of: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH) or combinations thereof.

18. The method according to any of the previous claims, wherein the first film (Fl) and optionally the second film (F2) are multi layered barrier films.

19. The method according to any of the previous claims, wherein vacuum sealing the air-impermeable outer encasement comprises evacuating air until an internal pressure within the air-impermeable outer encasement reaches a pressure within the range of 50 mbar to 550 mbar.

20. The method according to any of the previous claims, wherein vacuum sealing of the air-impermeable outer encasement comprises evacuating air until an internal pressure within the air-impermeable outer encasement reaches a pressure within the range of 70 mbar to 450 mbar, more preferably in the range of 80 mbar to 350 mbar, such as 100 mbar or 250 mbar.

21. The method according to any of the previous claims, further comprising providing one or more dimensionally stable elements, such as a cardboard piece, within the air-impermeable outer encasement.

22. The method according to any of the previous claims, further comprising providing a finger lift (900) to be engaged by a user's finger to facilitate opening of the package resulting from vacuumpackaging the plurality of absorbent articles.

23. A vacuum sealed package (1) containing plurality of absorbent articles (100), such as diapers, the package comprising an air-impermeable outer encasement (200) encasing the plurality of absorbent articles (100);wherein the outer encasement (200) is vacuum sealed such that the plurality of absorbent articles (100) are held in the outer encasement (200) in a compressed manner;wherein the air-impermeable outer encasement (200) comprises a first film (Fl), e.g. as a base, having a thickness t ranging between 5 - 500 micron, preferably between 15 - 500 micron; and optionally a second film (F2), e.g. as a cover, having a thickness t’ in the range between 5 - 450 micron.

24. The package of the previous claim, wherein the first film (Fl) has a thickness t ranging between 15 - 500 micron; and wherein the package further comprises the second film (F2), e.g. as a cover, wherein the second film (F2) has a thickness t’ in the range between 5 - 450 micron, and wherein the second film (F2) is smaller than the first film (Fl); preferably wherein the first film (Fl) of the air-impermeable outer encasement (200) has a thickness t of at least 17 micron, preferably at least 20 micron, even more preferably at least 25 micron.

25. The package any of the previous package claims, wherein the first film (Fl) of the air-impermeable outer encasement (200) represents at least 60 % of the total outer surface area of the outer encasement (200) and wherein the outer encasement (200) further comprises a second film (F2) having a thickness which is smaller than the thickness of the first film, and preferably at least 10 micron, even more preferably at least 15 micron, such as 90 micron.

26. The package of any of the previous package claims,wherein the first film (Fl) is a coextruded film that comprisesa first material (Ml) chosen from polyethylene (PE) or polypropylene (PP) and a second material (M2) chosen from polyamide (PA) or ethylene vinyl alcohol (EVOH).

27. The package of any of the previous package claims,wherein the second film (F2) is a coextruded film that comprisesa first material chosen from polyethylene (PE) or polypropylene (PP) anda second material chosen from polyamide (PA) or ethylene vinyl alcohol (EVOH),28. The package of any of the previous package claims,wherein the first material of the first film corresponds to the first material of the second film.

29. The package of any of the previous package claims, wherein the plurality of absorbent articles each comprise a liquid pervious topsheet, a liquid impervious backsheet and absorbent material positioned between the liquid pervious topsheet and the liquid impervious backsheet, preferably wherein the absorbent material is chosen from fluff and / or superabsorbent particles.

30. The package of any of the previous package claims,wherein the thickness t of the first film is in the range of 20 - 500 micron, preferably 20 - 350 micron, and wherein the first film comprises a material chosen from the group consisting of: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH) or combinations thereof and / or manufactured from a coextruded film.

31. The package of the previous claim, wherein the first film comprises at least polyethylene (PE), and / or polypropylene (PP) and further comprises polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH).

32. The package of any of the previous package claims,wherein the air-impermeable outer encasement (200) comprisesthe first film (Fl) that forms a base (41), e.g. as formed out of thermoformed bottom film; andthe second film (F2) that forms a cover (42) sealed to the base (41), e.g. as formed out of a top film, preferably wherein the first film (Fl) that forms the base (41) comprises multi layered barrier film; and wherein the second film (F2) that forms the cover (42) comprises mono or multi-layered second barrier film (F2).

33. The package of any of the previous package claims,wherein the first film (Fl) and optionally the second film (F2) are multi layered barrier films.

34. The package of the previous package claims, wherein the second film (F2) that forms the cover (42) comprises a multi-layered barrier film (F2).

35. The package of any of the previous package claims, wherein the second film comprises at least polyethylene (PE), and / or polypropylene (PP) and further comprises polyvinyl chloride (PVC), polyester (PET), polyamide (PA), ethylene vinyl alcohol (EVOH).

36. The package of any of the previous package claims,wherein the multi layered film (Fl) of the base (41) has a thickness t of at least 20 micron, preferably at least 30 micron, e.g. in the range of 30 - 500 micron such as 300 micron, andwherein the second film (F2) of the cover (42) is a multi-layered film that has a thickness t’ which is the same or which is smaller than the thickness t of the first barrier film (Fl), e.g. 90 micron.

37. The package of any of the previous package claims,wherein the package extends along x , y , z dimensions;the package comprising a top wall (51) and bottom wall (52) extending substantially parallel to each other and parallel to the x y plane, thereby defining a width and a length of the package; wherein the top wall (51) and bottom wall (52) are connected via one or more sidewalls (53) which extend in the z direction thereby defining a height of the article;wherein the height is smaller than the width and / or the length; wherein the plurality of absorbent articles (100) each comprise an absorbent core (1000) folded to have at least one C shape (60) with a first and second leg (61, 62), whereby the legs of each C shape are arranged substantially parallel to the top and bottom wall (51, 52).

38. The package of any of the previous claims,wherein the first film (Fl) has a thickness in the range of 30 - 450 micron andwherein the second film (F2) has a thickness in the range of 30 - 450 micron, preferably wherein the thickness of the second film (F2) is smaller.

39. The package of the previous claim,wherein the first film (Fl) forms a tray-shaped base with a bottom wall (52) and raised sidewalls (53) surrounding the absorbent articles, and wherein the second film (F2) is placed as a cover forming a top wall (51) of the package.

40. The package of any of the previous package claims,wherein the package further comprises a band or banding element (320), e.g. a paper strip, arranged around the vacuum sealed package.

41. The package of any of the previous package claims, wherein the package comprises a finger lift (900) configured to be engaged by a user's finger to facilitate opening of the package.

42. The package according to any of the previous package claims, wherein the air-impermeable outer encasement is vacuum sealed to an internal pressure within said air-impermeable outer encasement within the range of 50 mbar to 550 mbar.

43. The package according to any of the previous package claims, wherein the air-impermeable outer encasement is vacuum sealed to an internal pressure within said air-impermeable outer encasement within the range of 70 mbar to 450 mbar, such as 100 mbar or 250 mbar.

44. The package of any of the previous two claims,wherein the first film (Fl) of the air-impermeable outer encasement (200) has a thickness t of at least 17 micron.

45. The package according to any of the previous package claims, wherein the first film (Fl) and / or the second film (F2) are provided as a coating (820) on a paper substrate (810).

46. The package according to any of the previous package claims, wherein the package further comprises a dimensionally stable carrier layer (950), such as a plastic sheet, on which the first film (Fl) is adhered to encase the plurality of absorbent articles.

47. The package according to the previous claim,wherein the dimensionally stable carrier layer (950) has a thickness tgsoin the range of 0.5 - 2 mm.

48. The package of any of the previous package claims,wherein the plurality of absorbent articles are encased by a sub-encasement (220) within the outer encasement (200), preferably a sub-encasement (220) chosen from a bag or a strap.

49. The package of the previous claim,wherein said sub-encasement (220) comprises one or more perforations.

50. The package of any of the previous package claims,wherein the encasement (100) comprises kraft paper.

51. An assembly (10) for transporting absorbent articles, said assembly comprising a container (11), such as a box or a bag, wherein said container (11) is holding a plurality of vacuum sealed packages (1) as defined in any one of the previous package claims, wherein the plurality of the packages are preferably arranged directly adjacently to each other within the container, and preferably stacked one above the other and / or arranged next to each other.

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