Pant-type diaper article

Abstract

The utility model discloses a pants type diaper product which comprises an absorption assembly and an application component, and the absorption assembly comprises 1) a first absorption body and 2) a second absorption body, a first water-impermeable backsheet, the first water-impermeable backsheet having a transverse dimension T1; a first absorbent core disposed between the first topsheet and the first backsheet; a first outer cover disposed on a garment facing side of the first backsheet; 2) a second absorbent body disposed on the garment facing side of the first absorbent body, comprising: a second water permeable topsheet having a transverse dimension T3; a second absorbent core; and 3) a chassis disposed on the garment facing side of the second absorbent core, the chassis comprising an impermeable chassis backsheet; wherein T1 is greater than T3, L3 is greater than L1, and the first outer cover and the second topsheet are bonded together with a temporary adhesive that enables the first absorbent body to be removed from the remainder of the diaper article.

Description

Technical Field

[0001] The utility model relates to a diaper product with multi-layer absorbent bodies, which allows the diaper product to be used for a second time after one absorbent body is removed. Background Art

[0002] Diaper products for personal hygiene such as disposable taped diapers, disposable pants and adult incontinence underwear are designed to absorb and contain various body exudates, including urine, menstrual fluid and fecal matter. It is necessary to have a diaper product with multiple absorbents, which allows a second use after the first soiling. Such diaper products need to have multiple absorbents, wherein the first absorbent can be removed after the first soiling, thereby exposing another absorbent. Such diaper products with multiple absorbents can provide convenience by allowing the soiled absorbent to be removed without completely removing the clothes. This convenience may be particularly needed during vacations or during cold seasons. Diaper products with multiple absorbents can also provide protection for materials.

[0003] Diaper articles with multiple absorbent bodies are known in the art, such as in US5,613,959, US2017 / 0216111A, US2017 / 0216106A, and US2017 / 0239099A. Although such diaper articles are known, they may need improvement in practical use.

[0004] For example, those diaper articles known in the art may not consider providing adequate sealing, leak-proofness, or wearing comfort before and after removal of the first absorbent body. For example, those diaper articles known in the art may not have practical measures to keep the absorbent body intact during the first use for the second use. For example, those diaper articles known in the art may not consider enabling the first absorbent body to be smoothly removed from the rest of the article.

[0005] Based on the foregoing, there is a need for a diaper product having a multi-layer absorbent body, wherein the absorbent body for a second use remains intact during the first use while maintaining wearing comfort and allowing the first absorbent body to be removed smoothly after use. There is also a need for a diaper product that addresses the issues of consumers who are conscious of the sustainable use of materials. Utility Model Content

[0006] The utility model relates to a diaper product, which comprises an absorption component and an application component. The absorption component comprises:

[0007] 1) A first absorbent body, the first absorbent body comprising:

[0008] a) a first water-permeable top sheet;

[0009] b) a first water-impermeable backsheet having a transverse dimension T1;

[0010] c) a first absorbent core disposed between the first topsheet and the first backsheet;

[0011] d) a first outer covering disposed on the garment-facing side of the first backsheet;

[0012] 2) A second absorbent body disposed on the garment-facing side of the first absorbent body, the second absorbent body comprising:

[0013] a) a second water-permeable topsheet having a transverse dimension T3;

[0014] b) a second absorbent core; and

[0015] 3) a chassis disposed on the garment-facing side of the second absorbent core, the chassis comprising a water-impermeable chassis backsheet;

[0016] wherein T1 is greater than T3, and wherein the first outer cover and the second topsheet are bonded together with temporary bonds that enable the first absorbent body to be removed from the remainder of the diaper article.

[0017] The utility model also includes the following technical solutions:

[0018] Embodiment 1. A diaper article comprising an absorbent assembly and an application member, wherein the absorbent assembly comprises:

[0019] 1) A first absorbent, the first absorbent comprising:

[0020] a) a first water-permeable top sheet;

[0021] b) a first water-impermeable backing sheet, the first water-impermeable backing sheet having a transverse dimension T1;

[0022] c) a first absorbent core, the first absorbent core being disposed between the first top sheet and the first back sheet;

[0023] d) a first outer covering disposed on the garment-facing side of the first backsheet;

[0024] 2) a second absorbent body, the second absorbent body being disposed on the garment-facing side of the first absorbent body, the second absorbent body comprising:

[0025] a) a second water-permeable top sheet, wherein the second water-permeable top sheet has a transverse dimension T3;

[0026] b) a second absorbent core; and

[0027] 3) a chassis disposed on the garment-facing side of the second absorbent core, the chassis

[0028] Includes water-impermeable chassis backsheet;

[0029] wherein T1 is greater than T3, and wherein the first outer cover and the second topsheet are bonded together with a temporary bond that enables the first absorbent body to be removed from the remainder of the diaper article.

[0030] Embodiment 2. The diaper article of embodiment 1, wherein the first outer cover has a transverse dimension T2, wherein T2 is greater than T3.

[0031] Embodiment 3. A diaper article according to Embodiment 1 or 2, wherein the chassis backsheet has a transverse dimension T4, wherein T4 is greater than T1.

[0032] Embodiment 4. A diaper article according to embodiment 1 or 2, wherein the temporary adhesive portion is arranged along the lateral edge of the second top sheet and extends in the longitudinal direction.

[0033] Embodiment 5. The diaper article according to embodiment 1 or 2, wherein the first backsheet has a longitudinal dimension L1 and the second topsheet has a longitudinal dimension L3, wherein L3 is greater than L1.

[0034] Embodiment 6. A diaper product according to embodiment 5, wherein the second top sheet includes a front longitudinal edge region within about 5 mm from the front end of the first outer covering member and within about one-third of the transverse dimension of the first outer covering member from the longitudinal axis, and a rear longitudinal edge region within about 5 mm from the rear end of the first outer covering member and within about one-third of the transverse dimension of the first outer covering member from the longitudinal axis, wherein the temporary bonding portion is absent in the longitudinal edge region.

[0035] Embodiment 7. The diaper article according to embodiment 6 further comprises an auxiliary temporary adhesive portion, wherein the auxiliary temporary adhesive portion is arranged between the temporary adhesive portions and extends in the lateral direction, wherein the auxiliary adhesive portion is absent in the longitudinal edge region.

[0036] Embodiment 8. The diaper article according to embodiment 7, wherein the auxiliary temporary bonds are disposed adjacent to the longitudinal edge regions.

[0037] Embodiment 9. The diaper article of Embodiment 1 or 2, wherein the chassis further comprises a pair of chassis cuffs disposed along the lateral edges of the chassis and extending in the longitudinal direction.

[0038] Embodiment 10. A diaper article according to embodiment 1 or 2, wherein the first absorbent body further comprises a first outer cover fold connected to the first outer cover, wherein the lateral edges of the first backsheet are sandwiched between the first outer cover and the first outer cover fold.

[0039] Embodiment 11. The diaper article of embodiment 1 or 2, wherein the temporary bond has a peak force of about 16 N or less and an average force of about 0.3 N or more, as measured herein.

[0040] Embodiment 12. The diaper article according to embodiment 1 or 2, wherein the application member is selected from the group consisting of fastening members and elastic bands.

[0041] Embodiment 13. A diaper article according to embodiment 12, wherein when the application member is an elastic band including a pair of side seams, when the side seams are not joined and the article is provided in a flat, uncontracted state, the longitudinal dimension between the proximal edge of the front side seam and the proximal edge of the back side seam is from about 40% to about 70% of the longitudinal dimension of the diaper article.

[0042] Embodiment 14. A diaper article according to embodiment 13, wherein the elastic band includes a front band and a rear band, the front band and the rear band are discontinuous with each other in the longitudinal direction and are assembled together with the absorbent assembly, wherein the front band and the rear band are located on the garment-facing side of the absorbent assembly, and the chassis includes a chassis outer covering member located on the garment-facing side of the chassis backsheet, wherein the longitudinal length of the chassis outer covering member is longer than the distance between the front band and the rear band, and shorter than the longitudinal length of the chassis backsheet.

[0043] Embodiment 15. A diaper article according to embodiment 14, wherein the longitudinal dimension of the rear band is greater than the longitudinal dimension of the front band, wherein the distal edge of the front band and the distal edge of the rear band are matched for sewing so that the proximal edge of the rear band remains unsealed, wherein the distal edge of the front band and the front longitudinal end of the absorbent assembly have a distance D1, and the distal edge of the rear band and the rear longitudinal end of the absorbent assembly have a distance D2, wherein D1 is less than D2. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] While this specification concludes with claims particularly pointing out and distinctly claiming the invention, which are considered to form a part hereof, it is believed that the invention will be better understood from the following description taken in conjunction with the accompanying drawings, wherein like reference numerals are used to designate substantially identical elements, and wherein:

[0045] Figure 1A to Figure 1Bis a schematic perspective view of one embodiment of a diaper article of the present invention, which shows how to remove the first absorbent body from the rest of the diaper article.

[0046] Figure 2A is a schematic plan view of one embodiment of an absorbent assembly of the present invention showing the wearer-facing side, wherein the cuff elements are shown below the TX and the cuff elements are removed above the TX.

[0047] Figure 2B is a schematic plan view of another embodiment of an absorbent assembly of the present invention showing the wearer-facing side, wherein the cuff elements are shown below TX and the cuff elements above TX are removed.

[0048] Figure 3 It was taken along line 3-3 Figure 2A or Figure 2B Schematic cross-sectional view of .

[0049] FIG. 4A to FIG. 4C It is a schematic plan view of an embodiment of a temporary adhesive portion of the present invention.

[0050] Figure 5A It is a schematic perspective view of an embodiment of a pants-type diaper product of the present invention.

[0051] Figure 5B is a schematic plan view of one embodiment of a pant-type diaper article of the present invention showing the garment-facing surface with its seams unjoined and in a flat, uncontracted condition.

[0052] Fig. 6A is taken along the longitudinal axis LX Figure 5B A longitudinal schematic cross-sectional view of an embodiment having Figure 2A The invention also provides an absorbent assembly in which the temporary adhesive portions and the elastic body are omitted.

[0053] Figure 6B is taken along the longitudinal axis LX Figure 5B Another embodiment of a longitudinal schematic cross-sectional view of Figure 2B The invention also provides an absorbent assembly in which the temporary adhesive portions and the elastic body are omitted.

[0054] 7A to 7F It is a schematic plan view of an implementation scheme of the signal area of ​​the present invention.

[0055] definition

[0056] As used herein, the following terms shall have the meanings specified below:

[0057] "Diaper article" means an article of wear including applied components, which may be in the form of a taped diaper, pant diaper, incontinence briefs, feminine hygiene underwear, etc. Diaper articles such as feminine pads that require a separate component (such as pins, tape, or underwear) for wearing are not considered "diaper articles".

[0058] "Longitudinal" means the direction extending substantially perpendicularly from one waist edge to the opposite waist edge of the article and generally parallel to the greatest linear dimension of the article.

[0059] "Transverse" refers to a direction perpendicular to the longitudinal direction.

[0060] "Proximal" and "distal" refer to locations closer to or farther from, respectively, the longitudinal center of the article.

[0061] "Wearer-facing" and "garment-facing" refer to the relative position of an element or the relative position of surfaces of an element or a group of elements, respectively. "Wearer-facing" means that the element or surface is closer to the wearer during wear than some other elements or surfaces. "Garment-facing" means that the element or surface is farther from the wearer during wear than some other elements or surfaces (i.e., the element or surface is closer to the wearer's clothing, which may be worn over a disposable diaper article).

[0062] "Disposed" means that an element is located in a specific position or location.

[0063] "Joined" refers to configurations in which one element is directly secured to another element by being directly attached to the other element; it also refers to configurations in which one element is indirectly secured to another element by being attached to an intermediate member which is then attached to the other element.

[0064] "Film" refers to a sheet of material in which the length and width of the material greatly exceed the thickness of the material. Typically, a film has a thickness of about 0.5 mm or less.

[0065] "Nonwoven", "nonwoven layer" or "nonwoven web" are used interchangeably to refer to an engineered fiber assembly that is primarily planar and has been given a designed level of structural integrity by physical and / or chemical means, but does not include weaving, knitting or papermaking (ISO 9092:2019 definition). Directed or randomly oriented fibers are bonded by friction and / or cohesion and / or adhesion. These fibers may be derived from natural or synthetic sources and may be staple fibers or continuous filaments or fibers formed in situ. Commercially available fibers have a diameter range of less than about 0.001 mm to greater than about 0.2 mm, and they have several different forms, such as staple fibers (known as chemical staple fibers or chopped fibers), continuous single fibers (filaments or monofilaments), untwisted continuous filament bundles (tows) and twisted continuous filament bundles (yarns). Nonwoven webs can be formed by many methods, such as meltblowing, spunbonding, solution spinning, electrospinning, carding, and air-laid. The basis weight of nonwoven webs is usually expressed in grams per square meter (g / m 2 or gsm).

[0066] "Water-permeable" and "water-impermeable" refer to the permeability of a material within the range of intended use of disposable diaper articles. Specifically, the term "water-permeable" refers to a layer or layered structure having pores, openings and / or interconnected void spaces that permit liquid water, urine or synthetic urine to penetrate through its thickness in the absence of an applied pressure. Conversely, the term "water-impermeable" refers to a layer or layered structure wherein liquid water, urine or synthetic urine cannot penetrate through the thickness of the layer or layered structure in the absence of an applied pressure (other than natural forces such as gravity). According to this definition, a water-impermeable layer or layered structure may be permeable to water vapor, i.e., may be "steam permeable".

[0067] "Hydrophilic" describes the substrate surface that can be wetted by aqueous fluid (for example, aqueous body fluid) deposited on these substrates.Hydrophilicity and wettability are usually defined according to the contact angle and the soak-through time of fluid, for example, by nonwoven fabrics. In the publication of the American Chemical Society entitled "Contact angle, Wettability and Adhesion" (copyright 1964) compiled by Robert F.Gould, this is discussed in detail.When the contact angle between fluid and the surface is less than 90 °, or when fluid tends to spread spontaneously along the substrate surface, it can be said that the substrate surface is wetted by fluid (i.e. hydrophilic), and these two conditions coexist usually.On the contrary, if the contact angle is greater than 90 ° and fluid can not spread spontaneously along the fiber surface, then it is believed that substrate is "hydrophobic".

[0068] "Extensibility" and "extensible" mean that the width or length of a component in a relaxed state can be extended or increased.

[0069] "Elasticated" and "elasticized" mean that the component includes at least a portion made of an elastic material.

[0070] "Extensible material," "extensible material," or "stretchable material" are used interchangeably and refer to a material that, upon application of a biasing force, can be stretched to an elongated length of at least about 110% of its relaxed initial length (i.e., can be stretched to more than 10% of its initial length) without rupturing or breaking, and exhibits minimal recovery upon release of the applied force, i.e., recovers less than about 20% of its elongation without completely rupturing or breaking, as measured by EDANA method 20.2-89. In the event that such an extensible material recovers at least 40% of its elongation upon release of the applied force, the extensible material will be considered "elastic" or "elastomeric." For example, an elastic material having an initial length of 100 mm can extend to at least 150 mm, and upon removal of the force it retracts to a length of at least 130 mm (i.e., exhibits 40% recovery). In the event that the material recovers less than 40% of its elongation upon release of the applied force, the extensible material will be considered "substantially inelastic" or "substantially non-elastomeric." For example, an extensible material having an initial length of 100 mm may extend to at least 150 mm and retract to a length of at least 145 mm when the force is removed (ie, exhibit a 10% recovery).

[0071] Unless otherwise specified, the "size", "length", "width", "pitch", "diameter", "aspect ratio", "angle" and "area" of the article are measured as follows: the article is stretched to the fully stretched circumference W1, which is measured according to the "full article force value measurement" in this article and using a ruler or a small magnifying glass.

[0072] "Observation original image" refers to the visual representation that can be observed by the naked eye, provided by printing or other means and has color. Printing includes various methods and equipment well known to those skilled in the art, such as lithography, screen printing, flexographic printing and gravure inkjet printing.

[0073] As referred to herein, "color" or "colored" includes any primary color other than white, i.e., black, red, blue, violet, orange, yellow, green, and indigo, and any variation thereof or mixture thereof. According to the CIE L*a*b* color system, white is defined as those colors having an L* value of at least 94, an a* value equal to 0±2, and a b* value equal to 0±2. DETAILED DESCRIPTION

[0074] Diaper products and absorbent components

[0075] Figure 1A to Figure 1B The invention is a perspective view of an embodiment of a pant-type diaper product (10) of the present invention, which includes an absorbent assembly (20) and an application component (40). The absorbent assembly (20) includes a first absorbent body (38), a second absorbent body (39) disposed on the garment-facing side of the first absorbent body, and a chassis (100) disposed on the garment-facing side of a second absorbent core, wherein the first absorbent body (38) and the second absorbent body (39) are bonded by a temporary bonding portion (TB) that enables the first absorbent body (38) to be removed from the rest of the diaper product (10). The diaper product (10) of the present invention has multiple layers of absorbent bodies (38, 39), so that the diaper product (10) can be used more than once. Therefore, the chassis (100) and the application component (40) can be used more than once, thereby contributing to the sustainable use of materials. In addition, the first absorbent body (38) can be removed from the rest of the diaper product (10) without completely removing the diaper product (10) from the wearer, thereby facilitating easy diaper changing.

[0076] Figure 2A and Figure 2B 1 is a schematic plan view of an embodiment of an absorbent assembly of the present invention, showing a front side at the top and a back side at the bottom. The absorbent assembly (20) has a longitudinal centerline LX, which also serves as a longitudinal axis, and a transverse centerline TX, which also serves as a transverse axis. The figure below TX shows the cuff elements, while the figure above TX removes the cuff elements. That is, referring to Figure 3 , there are cuff elements (31, 35, 33 and 34) along the left and right transverse edges of the absorbent assembly. Figure 2A and Figure 2B In FIG. 1 , these elements are removed above TX, thereby showing the first topsheet ( 241 ) and any elements extending beyond the dimensions of the first topsheet ( 241 ). Figure 2A and Figure 2B The upper left side of the first top sheet (241) exposes and shows the elements of the first absorbent body (38) below. In addition, the elements of the second absorbent body (39) below the first outer cover (421) are exposed and shown. Figure 2A and Figure 2B TX below shows a state in which any elastic hoop element (33, 35) is fully stretched. Figure 2A and Figure 2B The lower left side of the figure exposes and illustrates the elements of the chassis (100) beneath the nonwoven material forming the chassis outer hoop (34).

[0077] refer to Figure 2A , Figure 2B and Figure 3The first absorbent body (38) and the rest of the diaper article (39, 100) each have basic components so as to provide the function as an absorbent diaper article (10). Specifically, the first absorbent body (38) includes a first water-permeable top sheet (241), a first water-impermeable back sheet (251), a first absorbent core (621) arranged between the first top sheet and the first back sheet, and a first outer covering member (421). The first outer covering member (421) serves as an interface between the second absorbent body (39) on which a temporary bonding portion (TB) is arranged. The second absorbent body (39) includes a second water-permeable top sheet (242) and a second absorbent core (622). The second top sheet (242) serves as an interface between the first absorbent body (38) on which a temporary bonding portion (TB) is arranged. A chassis (100) is disposed on the garment-facing side of the second absorbent core, the chassis (100) comprising a water-impermeable chassis backsheet (252) which may serve as a barrier to prevent leakage of exudates absorbed by and contained within any absorbent body in the absorbent assembly (20). When only the first absorbent body and the second absorbent body (38, 39) are present, the second absorbent body (39) may be free of a second backsheet. When more than two absorbent bodies are present, the second absorbent body (39) may further comprise a second backsheet and a second outer covering member, the second outer covering member serving as an interface between a third topsheet of a third absorbent body on which another temporary bonding portion (TB) is disposed. In a similar manner, more layers of absorbent bodies may be included in the absorbent assembly (20), wherein the absorbent body closest to the garment-facing side may be free of a backsheet and an outer covering member.

[0078] The absorbent assembly (20) of the present invention can be assembled with an application component (40) to form a diaper product (10), wherein the application component (40) is selected from the group consisting of a fastening component and an elastic band (40). Figure 5A The diaper article (10) may be in the form of a pant-type diaper including an elastic band (40), wherein the elastic band (40) may be formed by a combination of a nonwoven material and / or a woven material and an elastic material (such as an elastomer and an elastic film). Although not shown, the diaper article (10) may be in the form of a taped diaper including a fastening component. The fastening component may be, for example, a pair of elongated members and a receiving member, the elongated members protruding laterally from the left and right transverse edges of the rear region and being fastened with the receiving member provided on the front region.

[0079] Whether it is a pants type or a taped type, the diaper product (10) of the present invention can be used more than once while having an appropriate thickness, so it is comfortable to wear. According to the measurement herein, the diaper product (10) of the present invention can have a folded thickness of not more than about 12.5 mm. By providing a diaper product within this folded thickness, the product provides an aesthetic and tactile feel similar to a diaper product having a single absorbent body.

[0080] Topsheet, backsheet and outer covering

[0081] refer to Figure 2A , Figure 2B and Figure 3 The absorbent bodies (38, 39) of the present invention each include a water-permeable top sheet (241, 242) that can be positioned to at least partially contact or be in close proximity to the wearer. The first absorbent body and the second absorbent body (38, 39) can use the same or different materials. Suitable top sheets (241, 242) can be made of a wide range of materials, such as porous foam; reticulated foam; open-cell plastic film; or a woven or non-woven fiber web composed of natural fibers (e.g., wood fibers or cotton fibers), synthetic fibers (e.g., polyester fibers or polypropylene fibers), or a combination of natural fibers and synthetic fibers. The top sheets (241, 242) are generally compliant, soft-feeling, and non-irritating to the wearer's skin. The top sheets (241, 242) are liquid-permeable, thereby allowing body fluids to easily penetrate through the thickness of the top sheets (241, 242). Exemplary top sheets (241, 242) suitable for the present invention include those made of a carded nonwoven substrate containing PE / PET bicomponent fibers purchased from Xiamen Yanjiang New Materials Co., Ltd., purchased from Fibertex NiLai, Malaysia under the trade name H30501221, or purchased from FQN Hazlet NJ, USA under the trade name SB1206169. As known in the art, any portion of the top sheet (241, 242) can be coated with a lotion or skin care ingredient. Examples of suitable lotions include those described in U.S. Pat. Nos. 5,607,760; 5,609,587; 5,635,191; and 5,643,588.

[0082] The first absorbent body (38) and chassis (100) of the utility model each include a water-impermeable backsheet (251, 252), which is designed to prevent the exudate absorbed by the absorbent core (621, 622) and contained in the absorbent core from soiling products that may contact the diaper product (10), such as bed sheets and underwear. The first absorbent body (38) and chassis (100) can use the same or different materials. The backsheet (251, 252) can be positioned so that it extends beyond the absorbent core (621, 622) disposed on the wearer-facing side of the specific backsheet (251, 252) in both the longitudinal and transverse directions. Suitable backsheet (251, 252) materials include films, such as those manufactured by Plaster Argentina under the trade name PLBA NBBS10-12GSM PR V1. Other suitable backsheet (251, 252) materials may include breathable materials that allow steam to escape from the diaper article (10) while still preventing effluent from passing through the backsheet (251, 252). Exemplary breathable materials may include materials such as woven webs, nonwoven webs, composite materials such as film-coated nonwoven webs, and microporous films, such as those manufactured by Daika Japan under the trade name MPFDKH-180 15G V7 and by Berry Nashville, TN under the trademark BR-137P V13. Such breathable composite materials are described in more detail in PCT application WO 95 / 16746 and U.S. Patent No. 5,865,823. Other breathable backsheets including nonwoven webs and apertured formed films are described in U.S. Patent No. 5,571,096. Exemplary suitable backsheets are disclosed in U.S. Patent No. 6,107,537. Other suitable materials and / or manufacturing techniques may be used to provide a suitable backsheet, including but not limited to surface treatments, specific film selection and processing, specific filament selection and processing, etc.

[0083] The first absorbent body (38) includes a first outer cover (421) that serves as an interface between the second absorbent body (39). The first outer cover (421) can be made of a soft nonwoven material. The first outer cover (421) and the first backing sheet (251) can be joined together by an adhesive or any other suitable material or method. An optional chassis outer cover (422) can also be provided on the garment-facing side of the chassis backing sheet (252) to provide a finished-look diaper product. Exemplary outer covers (421, 422) suitable for the present invention include those outer covers purchased from Guanhe Hygiene Products Co., Ltd. with the trade name S31921A made of a spunbond nonwoven substrate containing PP fibers, purchased from Fibertex NiLai, Malaysia with the trade name A10160EJ-MALAYSIA, and purchased from FQN Hazlet, New Jersey, USA with the trade name SM1104174.

[0084] Absorbent core

[0085] refer to Figure 2A , Figure 2B and Figure 3 The absorbent bodies (38, 39) of the present invention each include an absorbent core (621, 622) disposed on the wearer-facing side for absorbing and containing body exudates. The absorbent core (621, 622) may include an absorbent layer and a collection system. The absorbent layer is an area in which an absorbent material with a high retention capacity, such as a superabsorbent polymer, is present. The absorbent layer may be substantially free of cellulose. Alternatively, the absorbent layer may contain cellulose. There may be an absorbent layer that mainly contains cellulose, and another absorbent layer that mainly contains a superabsorbent polymer.

[0086] The superabsorbent polymer of the absorbent layer may be arranged between the first material layer and the second material layer fixed by the fiber layer of the thermoplastic adhesive material. The first material layer and the second material layer may be nonwoven fiber webs, including synthetic fibers, such as single-component fibers of PE, PET and PP, multi-component fibers such as parallel type, core / skin type or island-in-the-sea type fibers. Such synthetic fibers may be formed via a spunbond process or a meltblown process. Some parts of the absorbent layer may be configured to be substantially free of absorbent material to form one or more channels. The channels may be used to allow the absorbent core (621, 622) to bend when swollen by the fluid, so that the crotch area is conformed to the wearer's body after swelling and prevents the diaper product (10) from sagging. Multiple absorbent layers may be provided in the absorbent core (621, 622).

[0087] Alternatively, the absorbent core (621, 622) may include a high-loft material containing superabsorbent polymers. The term "high-loft" refers to a low-density loose fabric compared to a flat paper fabric. The high-loft fiber web is characterized by a relatively high porosity. This means that there is a relatively high amount of void space in which superabsorbent polymer particles can be distributed. The high-loft material (without superabsorbent particles) may have a density of less than 0.20 g / cm at a pressure of 4.14 kPa (0.6 psi). 3 The density is 0.05 g / cm 3 Up to 0.15g / cm 3 The high loft layer (without superabsorbent particles) may have a density of less than 0.20 g / cm at a pressure of 2.07 kPa (0.3 psi). 3 , especially at 0.02g / cm 3 Up to 0.15g / cm 3 The high loft layer (without superabsorbent particles) may have a density of less than 0.15 g / cm at a pressure of 0.83 kPa (0.12 psi). 3 , especially 0.01g / cm 3 Up to 0.15g / cm 3 A density in the range of 15 gsm to 500 gsm, preferably 30 gsm to 200 gsm, such as those described in US 2021 / 0361497 Al. The absorbent core (621, 622) comprising a high loft material comprising a superabsorbent polymer may also comprise channels.

[0088] The absorbent core (621, 622) may also include an acquisition system for facilitating the acquisition and distribution of body exudates and may be placed between the top sheet (241, 242) and the absorbent layer. The function of the acquisition system is to quickly acquire fluid from the top sheet (241, 242) away from the wearer-facing side and / or distribute it over a larger area so that it is more effectively absorbed by the absorbent core. The acquisition system may include cellulose fibers. Channels may also be formed in the acquisition system and may be configured to at least partially match the channels of the absorbent layer in the thickness direction. Such another liquid management layer may also be placed between the back sheet (251, 252) and the absorbent layer. The liquid management layer may be a spunlace nonwoven fabric comprising viscose, PET, CoPET / PET fibers and combinations thereof.

[0089] size

[0090] refer to Figure 2A , Figure 2B and Figure 3, the components used to form the absorbent assembly (20) may have a specific relationship with each other to ensure that the second absorbent body (39) remains intact during the first use, while maintaining wearing comfort and allowing smooth removal of the first absorbent body (38) after use. In the following, it is defined that the first backing sheet (251) has a transverse dimension T1 and a longitudinal dimension L1, the first outer cover (421) has a transverse dimension T2 and a longitudinal dimension L2, the second top sheet (242) has a transverse dimension T3 and a longitudinal dimension L3, and the chassis backing sheet (252) has a transverse dimension T4 and a longitudinal dimension L4. Figure 2A and Figure 2B In the figure, the base elements of the absorbent assembly (20) are all shown as rectangular. Alternatively, the four edges of the elements of the absorbent assembly (20), especially the elements of the first absorbent body (38), may be rounded, such as Figure 1A to Figure 1B and 7A to 7F Such rounding can help avoid the first absorbent body (38) having sharp edges that could otherwise be well observed by the wearer or caregiver (hereinafter collectively referred to as the "user") during the removal action. To determine the dimensions T1, T2, T3, T4, L1, L2, L3 and L4, the maximum transverse dimension and the maximum longitudinal dimension of each element are measured.

[0091] A temporary bonding portion (TB) for bonding the first absorbent body and the second absorbent body (38, 39) is provided between the first outer cover (421) and the second top sheet (242) so that the first absorbent body (38) can be removed from the rest of the diaper article (10) after the first use. In order not to soil the second absorbent body (39) during the first use, T1 is set to be larger than T3, preferably, T1 can be set to be larger than T3 by about 5 mm to about 15 mm. In addition, for the same purpose, T2 can be set to be larger than T3, preferably, T2 can be set to be larger than T3 by about 5 mm to about 45 mm.

[0092] refer to Figure 3 , the first absorbent body (38) may further include a first outer cover fold (43) connected to the first outer cover (421), wherein the lateral edge of the first backsheet (251) is sandwiched between the first outer cover (421) and the first outer cover fold (43). By providing the elements of the first absorbent body (38) of this configuration, better protection is provided along the lateral edge of the absorbent assembly (20), and visual exposure of the first backsheet (251) to the user can be avoided. Visual exposure of the backsheet (251, 252) is generally avoided in order to provide a finished appearance to the article, and also to avoid exposing the color of the exudate after soiling the absorbent assembly (20). To determine the dimension T2, only the first outer cover (421) is considered, and the dimension of the first outer cover fold (43) is not taken into account.

[0093] refer to Figure 2A and Figure 2B , L3 can be set to be greater than L1, preferably, L3 can be set to be greater than L1 by about 20mm to about 60mm. That is, the front end and / or rear end of the second top sheet (242) can extend beyond the first back sheet (251) and the first outer covering (421). By providing the first absorbent body (38) and the second absorbent body (39) of this configuration, the user can easily remove the first absorbent body (38) from the rest of the absorption assembly by inserting a finger between the first outer covering (421) and the second top sheet (242). The chassis back sheet (252) provides a barrier function for the entire diaper product (10). In order to provide this function, T4 can be greater than T1, preferably, T4 can be set to be greater than T1 by about 40mm to about 60mm. T4 can be set to be greater than any one of T1, T2 or T3. L4 can be greater than L1 or L2. The first absorbent core is configured to be smaller than T1, T2, L1 and L2 in size. The second absorbent core is configured to be smaller in size than T3, T4, L3 and L4. Figure 3 In the figure, due to the exaggerated thickness of the first outer cover (421), T2 is shown as being larger than T1, thereby increasing the size at the left and right folding points. But in reality, Figure 3 The embodiment described in has T1 and T2 of the same lateral dimensions.

[0094] Still reference Figure 2A and Figure 2B , the absorbent core present on the clothing-facing side, i.e., the second absorbent core (622), may have a distance between the front end of the core and the front end of the absorbent assembly (20) that is shorter than the distance between the rear end of the core and the rear end of the absorbent assembly (20). By moving the core slightly forward than the longitudinal center, the absorbent core can effectively receive and absorb fluid waste. When the second absorbent core (622) is arranged in such a position relative to the absorbent assembly (20), the rear ends of the first absorbent core and the second absorbent core (621, 622) can match, and the front end of the first absorbent core (621) is present on the near side of the front end of the second absorbent core (622). By arranging the first absorbent core and the second absorbent core (621, 622) in such a position, the longitudinal edge of the first outer cover (421) on the front side can be kept thinner due to the absence of the first absorbent core (621), thereby facilitating the insertion of a finger between the first outer cover (421) and the second top sheet (242) to perform the removal action of the first absorbent body (38). This longitudinal dimension difference of the first absorbent core and the second absorbent core (621, 622) can be provided on the front side, wherein a smaller longitudinal dimension is maintained between the front end of the absorbent core (621, 622) and the absorbent assembly (20).

[0095] Temporary bonding unit

[0096] The absorbent assembly (20) of the utility model has a first outer cover (421) and a second top sheet (242) bonded together by a temporary bonding portion (TB), and the temporary bonding portion is used to enable the first absorbent body (38) to be removed from the rest of the diaper product (10) after the first use. A temporary bonding portion (TB) with appropriate peel strength is provided between two nonwoven layers, namely the first outer cover (421) and the second top sheet (242). The temporary bonding portion (TB) can be provided by any one of an adhesive, heat energy, ultrasonic energy or a combination thereof. According to the peel strength measurement of this article, the temporary adhesive portion (TB) may have a peak force of about 16N or less, or a peak force of about 4N to about 15N, or a peak force of about 4N to about 10N, or a peak force of about 6N to about 15N, or a peak force of about 10N to about 15N, and an average force of about 0.3N or more, or an average force of about 0.4N to about 15N, or an average force of about 1N to about 15N, or an average force of about 0.4N to about 14N. The peel strength measurement of this article is intended to simulate the removal action of the user when the first absorbent body (38) is removed from the rest of the diaper article by starting to tear the temporary adhesive portion (TB) from either end of the front or rear end of the first absorbent body (38) toward the other end of the front or rear end. The average force is similar to the force observed during the middle of the removal action. By having an average force of about 0.3N or more, the temporary adhesive portion (TB) is strong enough to withstand the force generated by the wearer during the first use. The peak force is similar to the maximum force experienced during the removal action. By having a peak force of about 16 N or less, the temporary bond (TB) is not so strong that the bond can be torn apart without much effort and without damaging other components of the diaper article (10).

[0097] As long as the above-mentioned peak force and average force measured according to the peel strength of this article are achieved, the first outer covering (421) and the second top sheet (242) can be any nonwoven material suitable for use as a diaper product (10). Exemplary first outer covering (421) materials can be selected from those materials having a basis weight of about 6.5gsm to about 25gsm, preferably about 8gsm to about 20gsm. Exemplary second top sheet (242) materials can be selected from those materials having a basis weight of about 11gsm to about 40gsm, preferably about 15gsm to about 40gsm. The basis weight of the first outer covering (421) may be lower than the basis weight of the second top sheet (242).

[0098] FIG. 4A to FIG. 4C 2 is a schematic plan view of an embodiment of the temporary adhesive part (TB) of the present invention. The temporary adhesive part (TB) may be arranged at least partially along the transverse edge of the second top sheet (242) and extend in the longitudinal direction. FIG. 4A to FIG. 4BAs shown in , the temporary bonding portion (TB) can be a substantially straight line along the left and right transverse edges of the second top sheet (242). Figure 4C As shown, the temporary adhesive portion (TB) can be a continuous line extending at least partially along the transverse edge of the second top sheet (242), such as an ellipse. The shape of the continuous line can be a rectangle or other polygon.

[0099] refer to Figure 2A , Figure 2B and FIG. 4A to FIG. 4C , the first outer cover (421) includes a front longitudinal edge region within about 5 mm from the front end of the first outer cover (421) and within about one third of the transverse dimension of the first outer cover (421) from the longitudinal axis. The first outer cover (421) includes a rear longitudinal edge region within about 5 mm from the rear end of the first outer cover (421) and within about one third of the transverse dimension of the first outer cover (421) from the longitudinal axis. There may be no temporary bonding portion (TB) in the front and rear longitudinal edge regions. Reference Figure 4A , the temporary adhesive portion (TB) may extend longitudinally to the front and rear ends of the first outer cover (421). Figure 4B , the temporary adhesive (TB) can extend in the longitudinal direction, but the front and rear ends of the first outer cover (421) are left unbonded. By not providing the temporary adhesive (TB) in the front and rear longitudinal edge regions, it is convenient to insert a finger between the first outer cover (421) and the second top sheet (242) to start the removal action.

[0100] Still refer to FIG. 4A to FIG. 4B , an auxiliary temporary adhesive (ATB) may also be provided between the first outer covering (421) and the first outer covering (421), wherein the auxiliary temporary adhesive (ATB) provides the same or lower peak force as the temporary adhesive (TB) according to the peel strength measurement of this article. The auxiliary temporary adhesive (ATB) may be provided between temporary adhesives (TB) extending in the transverse direction, wherein there is no auxiliary temporary adhesive (ATB) in the front and rear longitudinal edge regions. The auxiliary temporary adhesive (ATB) may be connected to the left and right temporary adhesives (TB). FIG. 4A to FIG. 4B As shown, an auxiliary temporary bond (ATB) may be provided adjacent to the longitudinal edge region. Figure 4A, the auxiliary temporary bonding portion (ATB) can be a straight line extending in the transverse direction. The auxiliary temporary bonding portion (ATB) can be set at a position about 5 mm to about 40 mm away from the front longitudinal edge and the rear longitudinal edge of the first outer cover (421). By setting the auxiliary temporary bonding portion (ATB) at this position, the user has enough space to insert his fingers between the first outer cover (421) and the first outer cover (421) to start the removal action without leaving too much unbonded area. When there are many unbonded areas toward the front longitudinal end and the rear longitudinal end of the first absorbent body (38), this may cause unnecessary folding. Reference Figure 4B The temporary bonding part (TB) may be a curved part having a concave portion facing the front end or the rear end and extending in the transverse direction. The auxiliary temporary bonding part (ATB) may be disposed at a position where the concave portion closest to the front end or the rear end is about 5 mm to about 40 mm away from the front longitudinal edge and the rear longitudinal edge of the first outer cover (421).

[0101] refer to Figure 1B and Fig. 7A The clothing-facing side of the first absorbent body (38), i.e., the first outer cover (421), may be provided with a marking zone (SZ) comprising markings for intuitively guiding the user where to pinch the first absorbent body (38) to effectively start the removal action of the first absorbent body (38) from the rest of the diaper article (10). The marking zone (SZ) may be provided adjacent to the front and / or rear end of the first outer cover (421) and may overlap with the front longitudinal edge region or the rear longitudinal edge region of the second top sheet (242). It may be advantageous to provide the marking zone (SZ) adjacent to the front end of the first outer cover (421) to guide the user to start the removal action from the front side, as it is relatively more hygienic than starting the removal action from the rear side. It may be advantageous to provide the marking zone (SZ) adjacent to the front end of the first outer cover (421) to guide the wearer to start the removal action from the front side in a sitting position. It may be advantageous to provide a marking zone (SZ) adjacent to the rear end of the first outer covering (421) to guide the caregiver to start the removal action from the rear side, as it is convenient to start the removal action when the wearer is in a standing position. It may be advantageous to provide a marking zone (SZ) adjacent to the front and rear ends of the first outer covering (421) to enable the user to start the removal action according to various habits as described above or in other ways. It may be advantageous to provide a marking zone (SZ) adjacent to the front and rear ends of the first outer covering (421) to enable the caregiver to remove the first absorbent body (38) from both the front and rear sides when changing a diaper when the wearer is in a lying position. Reference FIG. 7B to FIG. 7DThe marking can be a color and / or pattern that can be distinguished from the rest of the first outer cover (421), a material and / or morphology that can be distinguished from the rest of the first outer cover (421), words such as "open", "peel off herefrom" and / or combined with a mark such as an arrow. FIG. 7B to FIG. 7D Any indicia may be provided by printing, physical treatment (such as embossing, quilting, opening or heating), by attaching additional materials, or any combination thereof. Fig. 7E , the marking can be provided by changing the shape of the marking zone (SZ), for example by providing a raised portion in the transverse center. This modified shape of the first outer cover (421) can optionally be matched with other materials of the first absorbent body (38), such as the first top sheet (241) and / or the first back sheet (251). Reference Figure 7F , the marking may be provided by attaching an additional material to the marking zone (SZ), the additional material extending from the first outer cover (421). FIG. 7B to FIG. 7F Any of the tags in can be combined with each other.

[0102] Other components

[0103] The absorbent assembly (20) of the present invention may also include components that improve the leak-proofness, wear resistance, fit or aesthetics of the resulting diaper product (10).

[0104] refer to Figure 3 as well as Figure 2A and Figure 2BBelow the TX, the chassis (20) may also include components that improve the fit of the diaper product around the legs of the wearer. A pair of chassis hoops may be arranged along the lateral edges of the chassis and extend in the longitudinal direction. The chassis hoops may include a pair of chassis inner hoops (31) and a pair of chassis outer hoops (34). The chassis inner hoop (31) may be formed by a material piece (usually a nonwoven fabric) that is partially bonded to the chassis backsheet (252) and may be partially raised and thus stand upright from the plane defined by the first top sheet (241). The chassis inner hoop (31) has a free end edge intended to contact the wearer's skin and form a seal. The upright portion of the inner hoop (31) typically includes an elastic element, such as one or more elastomers (35). The chassis inner hoop (31) provides improved containment of liquids and other body exudates near the junction of the wearer's torso and legs. In addition to the chassis inner cuff (31), the article may also include a chassis outer cuff (34) formed in the same plane as the chassis backsheet (252), which may be at least partially enclosed between the material used to form the chassis inner cuff (31) and the chassis backsheet (252), and may be positioned laterally outward relative to the chassis inner cuff (31). The chassis outer cuff (34) may provide a better seal around the wearer's thigh. The chassis outer cuff (34) may also include one or more elastomers (33). Figure 2A and Figure 2B The upper and lower portions separated by TX in each of the figures in FIG. 1 and 2 are provided to form the material forming the chassis outer hoop (34) covering portions of the chassis bottom sheet (252) that would otherwise be exposed. As discussed above, it is beneficial to avoid exposing the bottom sheet to the user because this provides a finished appearance. Figure 3 , the chassis outer hoop (34) can be formed by a chassis base sheet (252), a chassis hoop material and a plurality of outer hoop elastomers (33) sandwiched between the chassis base sheet (252) and the chassis hoop material, and wherein the chassis inner hoop (31) can be formed by the same chassis hoop material as used to form the chassis outer hoop (34) which extends inwardly and contains a plurality of inner hoop elastomers (35).

[0105] refer to Figure 2A , toward the front and rear ends, the second top sheet (242) may extend to the same extent as the chassis backsheet (252) so that there is no area of ​​the chassis backsheet (252) exposed toward the front and rear ends of the absorbent assembly (20). Figure 2B , towards the front and rear ends, there may be small areas extending in a longitudinal dimension from the front and rear ends of the absorbent assembly (20) where the chassis backsheet (252) is exposed. Figure 6BWhen the diaper product is a pants type, such an area that is originally exposed can be covered by the outer sheet fold (93). Although not shown, when the diaper product is an adhesive type, such an area that is originally exposed can be covered by a waistband attached along the front and rear ends of the absorbent assembly (20), the waistband extending in the transverse direction and having transverse elasticity.

[0106] As is typically provided for diaper articles having a single absorbent body, the chassis backsheet (252) and / or chassis outer cover (422) may have viewing artwork that is visible from the garment-facing side of the diaper article (10). Such viewing artwork may be coordinated with viewing artwork provided on fastening components (e.g., elastic bands) to form a pant-type article.

[0107] The first absorbent body (38) and the second absorbent body (39) may have different aesthetics that are identifiable from the top sheet side so that a user can distinguish between the first absorbent body and the second absorbent body (38, 39), and / or be aware of the presence of multiple absorbent bodies. For example, the first and second top sheets (241, 242) may have different topography, such as bonding, embossing, and openings. For example, the adhesive used to bond the first top sheet or the second top sheet (241, 242) to the layer directly below may be provided in the form of a color and pattern, wherein the color and / or pattern provided in the first absorbent body and the second absorbent body (38, 39) may be different.

[0108] Pants-type diapers

[0109] refer to Figure 5A and Figure 5B The diaper product (10) of the present invention may be in the form of pants, wherein the application member (40) is an elastic belt (40), and the elastic belt (40) includes a front belt (84), a rear belt (86) and a pair of side seams (32) that seal the lateral edges of the front belt (84) and the rear belt (86). The pants-type diaper product (10) may be as follows: Figure 5A and Figure 5BThe belt-type pants shown in the figure, wherein the front belt (84) and the rear belt (86) are discontinuous in the longitudinal direction and are assembled with an absorbent assembly (20), wherein the front belt and the rear belt (84, 86) are positioned on the garment-facing side of the absorbent assembly (20), wherein the annular belt is formed by the side seams (32) sealed by the front belt and the rear belt (84, 86). For the belt-type pants, the front belt (84) can be referred to as the front region (26), the rear belt (86) can be referred to as the rear region (28), and the remaining portion can be referred to as the crotch region (30). The front belt and the rear belt (84, 86) can be rectangular. At least one of the front belt and the rear belt (84, 86) can be shaped (not shown). For a belt-type pant, the longitudinal dimension (LB) of the back band (86) may be greater than the longitudinal dimension (LF) of the front band (84), wherein the distal edges (88) of the front band (84) and the back band (86) match for sewing, thereby leaving the proximal edge (90) of the back band (86) unsealed. The unsealed proximal edge of the back band (86) may form a buttocks cover. Although not shown, the pant-type elastic article (10) may be one-piece, wherein the front band and the back band (86) are continuous.

[0110] refer to Figure 5B , the front belt (84) and the rear belt (86) may each be formed by a laminate including a plurality of elastic bodies (96) extending in the transverse direction. At least some of the elastic bodies (96) extend substantially parallel to each other in the transverse direction. Figure 5B , Fig. 6A and Figure 6B , the front band (84) and the back band (86) may each include a laminate comprising a plurality of elastics (96) extending in the transverse direction, an inner sheet (94), an outer sheet (92) and an outer sheet fold (93), wherein the outer sheet fold (93) is an extension of the outer sheet material formed by folding the outer sheet material at the distal edges (88) of the front and back bands; wherein the elastic (96) is sandwiched between two of these sheets. The outer sheet fold (93) of the front and back bands (84, 86) may sandwich the front longitudinal edges and rear longitudinal edges of some components of the absorbent assembly (20). The front elastic band (84) and the back elastic band (86) may each consist solely of the elastic (96), the inner sheet (94), the outer sheet (92) and the outer sheet fold (93). The elastic (96) may be arranged between the front and back and in different longitudinal positions of the bands with the same or different deniers, spacings and forces.

[0111] Re-reference Figure 5BThe pant-type diaper article (10) is formed by an absorbent assembly (20), a front belt (84) and a rear belt (86), wherein the position of the absorbent assembly (20) is arranged according to the front belt (84) and the rear belt (86) to provide good absorbency and good wearing comfort. When the seams of the pant-type diaper article (10) are not joined and in a flat, uncontracted state of the elastic components, the side seams and the diaper article (10) each have a longitudinal dimension. When the longitudinal dimension (LB) of either belt is greater than the longitudinal dimension (LF) of the other belt, the longitudinal dimension of the side seam is equal to the LF. When the seams of the pant-type diaper article (10) are not joined and in a flat, uncontracted state of the elastic components, the longitudinal dimension between the proximal edge of the front side seam and the proximal edge of the rear side seam can be about 40% to about 70%, preferably about 43% to about 60% of the longitudinal dimension of the diaper article (10). By providing a pant-type diaper article (10) of this configuration, the absorbent assembly (20) can be properly placed against the wearer to obtain wearing comfort.

[0112] In the case of a diaper product (10) Figure 5B In the case of the belt-type pants, the distal edge of the front belt (84) and the front longitudinal end of the absorbent assembly (20) have a distance D1, and the distal edge of the rear belt (86) and the rear longitudinal end of the absorbent assembly (20) have a distance D2, and D1 can be set to be smaller than D2. By setting D1 to be smaller than D2, the absorbent assembly (20) can move forward, thereby effectively receiving and absorbing fluid waste.

[0113] refer to Fig. 6A and Figure 6B The pant-type diaper product (10) of the present invention may have a chassis outer covering (422) disposed on the garment-facing side of the chassis backsheet (252). The chassis outer covering (422) may be any nonwoven material suitable for the first outer covering (421) described above. Figure 5B In the case of a belt-type pants in the embodiment of the present invention and the presence of a chassis outer cover (422), the chassis outer cover (422) may extend only partially through the crotch region (30) in the longitudinal direction in the front and rear regions (26, 28) so that the distal portions of the front band (84) and the rear band (86) are free of the chassis outer cover (422). That is, the longitudinal length of the chassis outer cover (422) may be longer than the distance between the front band and the rear band (84, 86) and shorter than the longitudinal length of the chassis backsheet (252). With this configuration, the distal portions of the front band (84) and the rear band (86) are free of the chassis outer cover (422), thereby providing a relatively thin overall product (10) and providing cost savings.

[0114] As described above, it may be advantageous to guide the user to initiate the removal of the first absorbent body (38) from the front and / or rear end of the first absorbent body (38). With reference to the front side, the longitudinal dimensions of the components of the absorbent assembly (20) may be coordinated with the components of the front belt (84) to accommodate the removal. Figure 2A and Fig. 6A , the size of the outer sheet fold (93) can be set so that the front longitudinal edge of the component of the second absorbent body (39) and the chassis (100) can be sandwiched between the inner sheet (92) and the outer sheet fold (93), while the front longitudinal edge of the component of the first absorbent body (38) exists near the proximal edge of the outer sheet fold (93). Alternatively, with reference to Figure 2B and Figure 6B The front longitudinal edge of the first absorbent body (38) component may be present on the far side of the proximal edge of the outer sheet fold (93) and disposed on the wearer-facing side of the outer sheet fold (93). Fig. 6A or Figure 6B In any configuration of the absorbent assembly (20), the user's removal action can be accommodated. Although not shown, the longitudinal dimensions of the components of the absorbent assembly (20) can be coordinated with the components of the rear belt (86) having a configuration similar to that described above for the front side.

[0115] Peel strength measurement

[0116] 1. Preparation of finished samples

[0117] The samples used for the following measurements are obtained from 3 samples of finished diaper products. When the product is a pair of pants, the side seams of the pants are peeled open. The product is then stretched longitudinally so that any longitudinally extending elastics (such as cuff elastics) are fully stretched, and then the product is attached to a suitable plate with at least one area of ​​the fully stretched product via any attachment means (such as tape, adhesive, hook, etc.). Identify which side of the front or back side ("peel-off side") of the first absorbent body will be peeled off from the rest of the product. Cut with scissors along the width direction (transverse direction) at 10 cm from the longitudinal edge of the first absorbent body on the peel-off side. The portion exposed by such a cut is the measuring edge.

[0118] 2.MTS test setup and measurement

[0119] An MTS Criterion Model 42 running TW Elite 4.3.1.375 software with a standard tensiometer or equivalent is used as the apparatus. All tests are performed in a room maintained at 23°C ± 2°C and 50% ± 5% relative humidity.

[0120] The initial distance between the upper clamp and the lower clamp is set to 20mm. The clamps with a lateral dimension greater than the width of the temporary adhesive portion on the left and right sides are selected so that the samples are peeled off at the same horizontal level at the same time. The measuring edge of the sample is clamped by the clamp so that the upper clamp clamps the first absorbent body and the lower clamp clamps the rest of the product. The sample is set so that the lateral direction of the sample matches the horizontal direction of the device. A constant extension rate of 500mm / min is applied. Elongation measurement is performed from the point where the program starts. The upper clamp starts to move upward, while the lower clamp remains stationary, so that the first absorbent body is peeled off. The program stops when the upper clamp moves 200mm. The machine continuously measures force (N) at a sampling rate of 50Hz.

[0121] The peak force is the maximum force value observed during the measurement process. The average force is the average value observed between 80 mm and 160 mm extension. For both values, measurements from 3 samples are obtained and averaged to an accuracy of up to 0.01 N.

[0122] Folded thickness measurement

[0123] 1. Preparation of finished samples

[0124] For 3 finished diaper articles, samples for the following measurements were obtained. When the article was a pant, the article was used in its original form. When the article was a taped diaper, the article was folded in half along the longitudinal center line of the article. The folded longitudinal center of the article is referred to as the "bottom".

[0125] 2. Folding thickness measurement

[0126] An Ono Sokki closed axis foot caliper was used as the apparatus, with a foot of 24.13 mm diameter applying 0.689 kPa on an Ames stand, with a caliper gauge GS-503 or equivalent; all were measured using a digital readout DG-3610 or equivalent. All tests were conducted in a room maintained at 23°C ± 2°C and 50% ± 5% relative humidity.

[0127] The samples were obtained immediately after being removed from the newly opened package and the following measurements were performed so that the measurements could be completed within 5 minutes of opening the package:

[0128] (1) Carefully pick up the caliper foot by hand, place the sample flat on the caliper holder and place the caliper foot on the sample so that the caliper foot is placed 5 mm from the bottom and in the horizontal center. Wait for about 5 seconds and read the reading. This reading is the thickness of the bottom of the product.

[0129] (2) Carefully pick up the caliper foot by hand, place the sample flat on the caliper bracket and place the caliper foot on the sample so that the caliper foot is placed 50 mm from the bottom and in the horizontal center. Wait for about 5 seconds and read the reading. This reading is the thickness of the bottom of the product.

[0130] (3) Calculate the average of the values ​​obtained by steps (1) and (2).

[0131] The folded thickness is the mean of the values ​​obtained in (3) from the 3 samples averaged to an accuracy of up to 0.1 mm.

[0132] Example

[0133] Example 1-2 and Comparative Example 1-2 are size 4 (size L) belt-type pants diaper products having two absorbent bodies and having Figure 2A , Figure 3 , Figure 4A , Figure 5B and Fig. 6A The configuration and dimensions are shown in Table 1 below. Examples 1-2 have the peak force, average force, and folded thickness shown in Table 2 below.

[0134] Table 1

[0135] Location Embodiment 1, 2 Comparative Example 1 Comparative Example 2 T1(mm) 150 140 150 T2(mm) 150 140 150 T3(mm) 140 150 140 T4(mm) 198 198 140 L1(mm) 370 370 370 L2(mm) 370 370 370 L3(mm) 403 403 403 L4(mm) 403 403 403

[0136] The pant-type diaper articles of Examples 1-2 provide two layers of absorbent bodies for two uses, wherein the absorbent body for the second use remains intact during the first use. The pant-type diaper article T3 of Comparative Example 1 is larger than T1, and there is a risk of body exudates leaking into the second absorbent body when the first absorbent body is used. The pant-type diaper article T4 of Comparative Example 2 is smaller than T1, and there is a risk of body exudates leaking from the entire article during the first or second use.

[0137] Table 2

[0138] Location Example 1 Example 2 Peak force (N) 7.17 12.71 Average force (N) 3.40 1.49 Folded thickness(mm) 11.2 11.2

[0139] The temporary adhesive portions of the pant diaper articles of Examples 1-2 withstand the forces generated during the first use by the wearer and can be torn apart without damaging other components of the pant diaper articles. The pant diaper articles of Examples 1-2 look and feel thin enough for consumers as commercially available articles with a single absorbent body.

[0140] Consumer acceptance

[0141] Twelve panelists from Nanjing, China, who are users of products in a similar price range to the target consumers, were recruited. They were asked to use the product they used most often for 2 days (hereinafter referred to as the "benchmark"), then use the pant-type diaper product sample of Example 1 for 2 days (hereinafter referred to as "Example 1"), and answer a set of questions. Table 3 shows the results of the panelists' ratings on a scale of 0 to 100 for the attribute of "ease of application". Table 4 shows the results of the percentage of panelists who "fully agreed" or "partially agreed" to the statements. Table 5 shows the results of the percentage of panelists who agreed with the statements.

[0142] Table 3

[0143] Example 1 Benchmarks Easy to apply 73 points*1) 8 points

[0144] Table 4

[0145] statement Example 1 Benchmarks The time and effort I put into changing diapers is what I expect 83％*1) 8％

[0146] *1) Statistically significantly better (at 90% confidence level) than the baseline

[0147] Table 5

[0148] statement Much easier to apply than the benchmark 58％ Slightly easier to apply than the baseline 33％ I feel less stress or difficulty during diaper changes 92％ This is the most hassle-free diaper I have ever used. 83％ This is a product I will continue to use for my baby 92％ This is a sanitary product that the mother can peel off (peel off the first absorbent body from the rest of the article) 83％

[0149] The dimensions and values ​​disclosed herein are not to be construed as being strictly limited to the exact numerical values ​​cited. Instead, unless otherwise indicated, each such dimension is intended to represent the stated value and a functionally equivalent range around that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm." Furthermore, every numerical range given throughout this specification includes every narrower numerical range that falls within such broader numerical range.

[0150] Unless expressly excluded or otherwise limited, each document cited herein, including any cross-referenced or related patent or application, is incorporated herein by reference in its entirety. The reference to any document is not an admission that it is prior art to any disclosed or claimed invention of the present invention, or an admission that it proposes, suggests or discloses any such invention by itself or in combination with any one or more references. In addition, when any meaning or definition of a term in the present invention conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to the term in the present invention shall prevail.

[0151] Although the specific embodiments of the present invention have been illustrated and described, it is obvious to those skilled in the art that various other changes and modifications can be made without departing from the essence and scope of the present invention. Therefore, it is intended that all such changes and modifications within the scope of the present invention be included in the appended claims.

Claims

1. A pant-type diaper product, characterized in that: The pant-type diaper product comprises an absorbent assembly and an elastic belt, wherein the absorbent assembly comprises: 1) A first absorbent, the first absorbent comprising: a) a water-permeable first top sheet; b) a first water-impermeable backsheet having a transverse dimension T1 and a longitudinal dimension L1; c) a first absorbent core, the first absorbent core being disposed between the first top sheet and the first back sheet; d) a first outer covering disposed on the garment-facing side of the first backsheet; 2) a second absorbent body, the second absorbent body being disposed on the garment-facing side of the first absorbent body, the second absorbent body comprising: a) a water-permeable second topsheet having a transverse dimension T3 and a longitudinal dimension L3; b) a second absorbent core; and 3) a chassis disposed on the garment-facing side of the second absorbent core, the chassis comprising a water-impermeable chassis backsheet; wherein T1 is greater than T3, L3 is greater than L1, and wherein the first outer cover and the second topsheet are bonded together with a temporary bond that enables the first absorbent body to be removed from the remainder of the diaper article.

2. The pant-type diaper product according to claim 1, characterized in that: The first outer cover has a transverse dimension T2, wherein T2 is greater than T3.

3. The pant-type diaper product according to claim 1 or 2, characterized in that: The chassis bottom sheet has a transverse dimension T4, wherein T4 is greater than T1.

4. The pant-type diaper product according to claim 1 or 2, characterized in that: The temporary adhesive portions are disposed along transverse edges of the second topsheet and extend in the longitudinal direction.

5. The pant-type diaper product according to claim 1 or 2, characterized in that: The second top sheet includes a front longitudinal edge area within approximately 5 mm from the front end of the first outer cover and within approximately one-third of the transverse dimension of the first outer cover from the longitudinal axis, and a rear longitudinal edge area within approximately 5 mm from the rear end of the first outer cover and within approximately one-third of the transverse dimension of the first outer cover from the longitudinal axis, wherein the temporary bonding portion is not present in the longitudinal edge areas.

6. The pant-type diaper product according to claim 1 or 2, characterized in that: In the case where the elastic band includes a pair of side seams, when the side seams are not joined and the article is provided in a flat, uncontracted state, the longitudinal dimension between the proximal edges of the front side seams and the proximal edges of the back side seams is from about 40% to about 70% of the longitudinal dimension of the pant-type diaper article.

7. The pant-type diaper product according to claim 6, characterized in that: The elastic band includes a front band and a back band, which are discontinuous with each other in the longitudinal direction and are assembled with the absorbent assembly, wherein the front band and the back band are located on the garment-facing side of the absorbent assembly, and the chassis includes a chassis outer covering located on the garment-facing side of the chassis backsheet, wherein the longitudinal length of the chassis outer covering is longer than the distance between the front band and the back band, and shorter than the longitudinal length of the chassis backsheet.

8. The pant-type diaper product according to claim 7, characterized in that: The longitudinal dimension of the rear band is greater than the longitudinal dimension of the front band, wherein the distal edge of the front band and the distal edge of the rear band are matched for stitching so that the proximal edge of the rear band remains unsealed, wherein the distal edge of the front band and the front longitudinal end of the absorbent assembly have a distance D1, and the distal edge of the rear band and the rear longitudinal end of the absorbent assembly have a distance D2, wherein D1 is less than D2.

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