Packaging of sealed absorbent articles with natural fibers

Abstract

A package of one or more absorbent articles is disclosed, wherein the one or more absorbent articles are sealed within the package. The package comprises: a plurality of panels, the plurality of panels including a consumer-facing panel; a plurality of seals comprised by at least a portion of the plurality of panels. Each seal of the plurality of seals has an adhesive disposed in a seal area. One or more seals of the plurality of seals comprise an adhesive area that is greater than its corresponding seal area. The packaging material has natural fibers and has a basis weight of between 50 gsm and 120 gsm, more preferably between 60 gsm and 105 gsm, or most preferably between 70 gsm and 90 gsm as determined via ISO 536 as modified herein. Also, the packaging material is recyclable.

Description

Technical Field

[0001] This invention relates to disposable absorbent articles and their packaging, and more particularly to packaging materials containing natural fibers for disposable absorbent articles. Background Technology

[0002] Historically, environmentally friendly products are currently at the forefront of many consumer concerns. There is a growing focus on products from sustainable sources. For example, there is a strong market expectation for consumer products that incorporate natural, bio-based, and / or recycled materials. On the disposal side, there is a growing focus on products that are biodegradable, compostable, recyclable, reusable, and / or otherwise generate minimal landfill waste.

[0003] In the case of single-use absorbent products, especially single-use absorbent product packaging, there are packaging materials that already meet one or both of these criteria. For example, a large number of absorbent products utilize cardboard boxes as their shelf-stable packaging. Cardboard boxes, being derived from wood pulp, can meet one or both of sustainable sourcing and recyclability. Furthermore, cardboard boxes are useful when the product within the packaging itself cannot form a shelf-stable surface.

[0004] When disposable absorbent materials can be compressed and form a shelf-stable surface, a more flexible material, namely plastic, is typically used. Plastic is generally preferred over cardboard because, given its bending and stretching capabilities, it can withstand far more demanding packaging processes than cardboard. However, there is a growing public demand for alternatives to plastic and non-plastic-based materials. Natural-based flexible packaging materials will meet this demand. Summary of the Invention

[0005] The packaging disclosed herein includes one or more absorbent articles and comprises packaging material comprising natural fibers. Each package includes multiple sheets, including consumer-facing sheets, and the package is sealed. Furthermore, the packaging of this disclosure is recyclable.

[0006] In one embodiment, a package for one or more absorbent articles is provided, wherein the one or more absorbent articles are sealed within the package. The package includes: a plurality of sheets, including consumer-facing sheets; a plurality of seals, each of the plurality of seals comprising at least a portion of the plurality of sheets, wherein each of the plurality of seals includes an adhesive disposed in a seal area, wherein one or more of the plurality of seals includes an adhesive area larger than its corresponding seal area; and a packaging material comprising natural fibers and having a basis weight as determined via ISO 536 as modified herein, between 50 gsm and 120 gsm, more preferably between 60 gsm and 105 gsm, or most preferably between 70 gsm and 90 gsm, and wherein the packaging material is recyclable. Attached Figure Description

[0007] Figure 1A This is a schematic diagram of the packaging material sheet according to this disclosure.

[0008] Figure 1B It shows the folded configuration. Figure 1A A schematic diagram of the packaging material sheet.

[0009] Figure 1C This is a schematic diagram of a package in an open state according to this disclosure.

[0010] Figure 1D It is in a closed state. Figure 1A A schematic diagram of the packaging.

[0011] Figure 1E This is a schematic diagram of another package of the present disclosure shown in a closed state.

[0012] Figure 2A This is a schematic diagram showing a sheet of packaging according to the present disclosure, wherein the sheet includes a block-type seal.

[0013] Figure 2B This is a schematic diagram illustrating a package according to the present disclosure, wherein the package includes a seal in a clamping bottom configuration.

[0014] Figure 2C This is a schematic diagram showing a sheet of packaging according to the present disclosure, wherein the sheet includes a seal in a cross configuration.

[0015] Figure 2D This is a schematic diagram illustrating another package constructed according to this disclosure.

[0016] Figure 2E It is shown Figure 4A A schematic diagram of a rotated view of the packaging.

[0017] Figure 3A This is a schematic diagram of a sheet of packaging according to the present disclosure, wherein the sheet includes a block-shaped seal, wherein the adhesive area and hidden edges are identified.

[0018] Figure 3B This is a schematic diagram illustrating a package having an adhesive area and a sealing area according to the present disclosure.

[0019] Figure 3C It is shown Figure 3B A schematic diagram of the packaging.

[0020] Figure 4A It is a graph showing the tensile strength of the seal as a function of temperature based on the application of a patterned adhesive.

[0021] Figure 4B It is a graph showing the seal strength versus temperature based on the addition of colorant in the seal area.

[0022] Figure 4C It is a graph showing the seal strength versus temperature based on the addition of coating in the seal area.

[0023] Figure 5A This is a schematic diagram illustrating a package constructed using a flow wrapping process according to the present disclosure.

[0024] Figure 5B This is a schematic diagram illustrating another package according to the present disclosure constructed using a flow wrapping process.

[0025] Figure 6A yes Figure 1E A cross-sectional view of the packaging, showing the absorbent product inside.

[0026] Figures 6B to 6D It is a schematic diagram of the folded configuration of one or more absorbent articles disposed within the packaging of this disclosure.

[0027] Figure 7 This is a schematic diagram of the absorbent article of this disclosure, showing a partial cross-sectional view of the article.

[0028] Figure 8A A plan view of a diaper constructed according to the present disclosure is shown.

[0029] Figure 8B The section cut along line 35-35 is shown. Figure 8A The cross-section of the diaper.

[0030] Figure 8C It shows the state of expansion. Figure 8B The cross-section of the diaper. Detailed Implementation

[0031] As used herein, the term "absorbent article" refers to a device for absorbing and containing excretions, and more specifically, to a device placed close to or adjacent to the wearer's body to absorb and contain various excretions from the body. Absorbent articles of this disclosure include, but are not limited to, diapers, adult incontinence briefs, training pants, diaper fasteners, diaper covers, absorbent inserts for diaper covers, menstrual pads, incontinence pads, liners, sanitary pads, tampons, durable menstrual pants, disposable swim trunks, etc. Additionally, the term "absorbent article" includes cleaning devices that can be used to clean surfaces, such as dust wipes, dust wipe refills adapted to a reusable handle, sweeping and / or mopping mats, and sweeping or mopping mat refills attachable to a reusable handle.

[0032] As used herein, the term "transverse" or "CD" refers to a path perpendicular to the longitudinal direction in the plane of the fiber web.

[0033] As used in this article, the term "longitudinal" or "MD" refers to the path of a material, such as a fiber web, as it moves through the entire manufacturing process.

[0034] As used in this article, the term "colorant" refers to inks, dyes, pigments, etc., used to produce color in a substrate.

[0035] As used herein, the term "natural fiber" refers to fibers including cellulose-based fibers, bamboo-based fibers, and the like. Natural fibers also refer to non-wood fibers such as cotton, Manila hemp, kenaf, Indian grass, flax, North African reed, wheat straw, jute, bagasse, milkweed filaments, and pineapple leaf fibers; and wood fibers, timber or pulp fibers, such as those obtained from deciduous and coniferous trees, including cork fibers such as northern and southern cork hide fibers; and hardwood fibers such as eucalyptus, maple, birch, and poplar. Pulp fibers can be prepared in high-yield or low-yield forms and can be pulped by any known method, including hide pulping, sulfite pulping, high-yield pulping methods, and other known pulping methods. The natural fibers of this invention can be recycled natural fibers, virgin natural fibers, or mixtures thereof. Furthermore, to ensure good mechanical properties, it is desirable that the natural fibers are relatively undamaged and mostly unrefined or only lightly refined. The fibers may have a Canadian standard freeness of at least 200, more specifically at least 300, even more specifically at least 400, and most specifically at least 500.

[0036] Unless otherwise specified, as used herein, the term "cellulose-based fiber" can include cellulose fibers (such as wood fibers), cotton, regenerated cellulose fibers (rayon or cuprammonium rayon), and high-yield pulping fibers. The term "cellulose-based fiber" also includes chemically treated natural fibers (such as mercerized pulp), chemically hardened or cross-linked fibers, or sulfonated fibers. It also includes mercerized natural fibers, regenerated natural cellulose fibers, cellulose produced by microorganisms, rayon processes, cellulose dissolving and coagulating spinning processes, and other cellulose materials or cellulose derivatives. Other cellulose-based fibers included are waste paper or recycled fibers and high-yield fibers. High-yield pulping fibers are those produced by pulping processes that provide a yield of about 65% or higher, more specifically about 75% or higher, and even more specifically about 75% to about 95%. Yield is the amount of processed fiber obtained as a percentage of the initial wood mass. These pulping processes include bleached chemothermal-mechanical pulp (BCTMP), chemothermal-mechanical pulp (CTMP), pressure / pressure thermomechanical pulp (PTMP), thermomechanical pulp (TMP), thermomechanical-chemical pulp (TMCP), high-yield sulfite pulp, and high-yield kraft pulp, all of which result in fibers with high levels of lignin but are still considered natural fibers. High-yield fibers are known for their hardness in both dry and wet states, compared to typical chemically pulped fibers.

[0037] As used herein, the terms “non-recyclable material” or “contaminant” refer to materials that are considered unsuitable for processing in natural fiber recycling processes. However, materials provided under one or both of these names in alternative recycling streams can be recyclable.

[0038] As used herein, the terms “non-recyclable material” or “contaminant” refer to materials that are considered unsuitable for processing in natural fiber recycling processes. However, materials provided under one or both of these names in alternative recycling streams can be recyclable.

[0039] The packaging materials disclosed herein are recyclable, which minimizes the material sent to landfills. The packaging materials disclosed herein contain natural fibers. The packaging materials disclosed herein can be processed to form packages comprising one or more absorbent articles.

[0040] The packaging materials disclosed herein can be arranged into packages of various configurations including one or more absorbent articles. For example, a package may include multiple sheets, including a consumer-facing sheet. The consumer-facing sheet is the side of the package that faces the consumer when it is on a shelf. Generally, the consumer-facing sheet includes branding and / or packaging information, each of which is discussed in more detail herein. Each of the multiple sheets includes an inner surface and an outer surface.

[0041] The packaging of this disclosure can have a generally cuboid shape. Therefore, in addition to the consumer-facing sheet, the packaging of this disclosure may also include a rear sheet opposite to the consumer-facing sheet, a left sheet disposed between the consumer-facing sheet and the rear sheet, a right sheet opposite to the left sheet, a bottom sheet disposed between the consumer-facing sheet and the rear sheet, and an opposite top sheet.

[0042] Packaging materials can be monolithic or can comprise multiple discrete parts. For example, multiple creases can be used to form multiple pieces of packaging. To further illustrate an example where the packaging is cubic in shape, at least one crease may be provided between each of the following: (1) the consumer-facing piece and the left piece; (2) the consumer-facing piece and the right piece; (3) the consumer-facing piece and the top piece; and (4) the consumer-facing piece and the bottom piece. Additionally, at least one crease may be provided between each of the following: (1) the back piece and the left piece; (2) the back piece and the right piece; (3) the back piece and the top piece; and (4) the back piece and the bottom piece.

[0043] For packages including cube-shaped items, the consumer-facing sheet can be positioned approximately perpendicular to the shelf, while the backing sheet can be approximately flat on the shelf or on top of another package. Assuming the shelf is perfectly horizontal, approximately perpendicular means the consumer-facing sheet is within ±35 degrees of the vertical direction. Again, assuming the shelf is perfectly horizontal, approximately flat means the backing sheet is within ±35 degrees of the horizontal direction. Alternatively, in some configurations, the consumer-facing sheet can be oriented approximately horizontally to the shelf and face the consumer when the consumer looks down at the package.

[0044] Other packaging shapes are envisioned. Examples of such packages include flow wraps or horizontally molded-fill and sealed wraps. Such packages may include a generally cubic shape, also constructed as described above. However, in some cases, particularly where they include a small amount of absorbent article, these packages may include a consumer-facing sheet and an opposing rear sheet. In such packages, as described herein, a hoop seal and end seals are formed. In such configurations, the consumer-facing sheet may be oriented generally vertically or generally horizontally. Additionally, in such packages, there may be no fold line distinguishing the consumer-facing sheet from the rear sheet. Instead, curved surfaces may be present between these sheets.

[0045] Another envisioned packaging configuration is Totani TM Structure. In this type of configuration, multiple discrete parts of the packaging material can be used, or the packaging material can be a single piece. Totani TM The structure is discussed in more detail in this article.

[0046] Other examples are envisioned in which packaging shapes comprising fewer than six panels are formed. Based on these examples, packages having a circular or semi-circular shape when viewed from the film are envisioned. Additionally, packages having a triangular shape when viewed from the film are envisioned. Regardless of the number of panels included in the packaging of this disclosure, the packaging includes consumer-facing panels.

[0047] Additionally, the packaging disclosed herein includes multiple seals. The seals of the packaging disclosed herein include seams joined together, for example, by an adhesive or by bonding films together. A seal is a packaging area where at least two portions of the packaging material can overlap each other. A seal is created when at least two portions of the packaging material are joined together at a seam, for example, by an adhesive or by bonding films together. For example, a backsheet may include a seam where the ends of the packaging material overlap. An adhesive may be applied to the inner surface of a first portion of the backsheet, the outer surface of a second portion of the backsheet, and the outer surface of a base portion of the backsheet to form one or more seals. A topsheet may include a seal where the ends of the packaging material are joined together, similar to the seal of a backsheet. Although seals may be provided on any sheet of the packaging, it is recommended that consumer-facing sheets not include seams or seals. Seams and seals may be visually unappealing to consumers.

[0048] It is worth noting that the seam may include the overlapping area of ​​the packaging material as described above. That is, the inner surface of the first part of the packaging material and / or the outer surface of the second part of the packaging material may be joined together to form an overlapping seal. However, a butt seal may also be formed. A butt seal may be formed where the inner surfaces of the first part and the second part of the packaging material are joined together. The inner surfaces of the first and second parts may be joined to form a butt seal. Butt seals and overlapping seals will be discussed in more detail below.

[0049] A seal is important for ensuring that the packaging of this disclosure reduces the possibility of one or more absorbent articles being exposed to the environment outside the packaging material. As described herein, the use of a seal provides a sufficient seal of the packaging material, preventing the absorbent articles within the packaging from being exposed to the external environment. Simply folding or rolling up the packaging material does not form a seal and is insufficient unless a seal is provided as described herein.

[0050] Each seal may include an adhesive disposed in a sealing region, and at least one of the seals includes an adhesive region. This adhesive region includes the area of ​​the packaging material adjacent to the seal, and the adhesive region encompasses the sealing region. During manufacturing, adhesive may be provided in the sealing region to ensure a good seal. However, while precise alignment can be achieved to ensure that the sealing region and the adhesive region extend together (one on top of the other), such measures to ensure a precise level of alignment can make the processing of the packaging overly complex. Therefore, as previously stated, at least one of the seals includes an adhesive region larger than the sealing region. This configuration can solve the alignment problem by applying adhesive over an area larger than the sealing region. For example, the sealing region may have a width substantially perpendicular to the longitudinal centerline of either the sealing region or the adhesive region, and the adhesive region may also have a width perpendicular to the longitudinal centerline of either the sealing region or the adhesive region.

[0051] While increasing the width of the adhesive region can address alignment issues, as previously mentioned, adding an increased amount of adhesive can adversely affect the recycling process. Accordingly, the ratio of the width of the adhesive region to the width of the seal region can be about 60:1 or less, more preferably about 40:1 or less, or most preferably about 20:1, specifically including all values ​​within these ranges and any ranges arising therefrom. For example, the ratio of the width of the adhesive region to the width of the seal region can be between about 15:1 and about 60:1, more preferably about 10:1 and about 40:1, or most preferably about 2:1 and about 20:1, specifically including all values ​​within these ranges and any ranges arising therefrom. It is worth noting that other seals in a plurality of seals may also include adhesive regions as described.

[0052] The width of the sealing area can be between about 1 mm and about 15 mm, more preferably about 1 mm and about 10 mm, or most preferably about 1 mm and about 5 mm, specifically listing these ranges and all values ​​within any range therefrom.

[0053] As noted, the application of adhesive should be carefully examined to ensure that the packaging material still meets the desired recyclability requirements. Accordingly, the total adhesive area of ​​the package may not exceed 50% of the total inner and / or outer surface area of ​​the package. For example, the total adhesive surface area of ​​the package of this disclosure may be 50% or less, more preferably 40% or less, or most preferably 30% or less, specifically including all values ​​within these ranges and any ranges arising therefrom. As another example, the total adhesive surface area may be between 10% and 50%, more preferably about 10% to 40%, or most preferably about 10% to 30%, specifically including all values ​​within these ranges and any ranges arising therefrom. In this regard, adhesive may be applied to multiple sheets of the package of this disclosure; however, in some forms, at least one sheet may be present that does not contain adhesive, more preferably at least two sheets that do not contain adhesive, and most preferably at least three sheets that do not contain adhesive.

[0054] Regarding the inner surface, the total adhesive area can be between 5% and 35% of the inner surface area of ​​the package, more preferably between about 5% and 25%, or most preferably between about 5% and 20%, specifically including all values ​​within these ranges and any ranges arising therefrom. Regarding the outer surface of the package, the previously described total adhesive area applies. It is worth noting that in some forms, adhesive use can be reduced without utilizing adhesive on the outer surface of the package. In such forms, the gusset fins may not adhere to each other.

[0055] As previously described, adhesives can be applied to one or more of the inner and outer surfaces of packaging material to form a seal. For example, some seals may include one or more portions of the inner surface comprising adhesive and one or more portions of the outer surface comprising adhesive. A specific example of such a seal is a gusseted plate seal, which includes a sealed inner portion and may also include a sealed outer portion, wherein the outer portion is located on the side of the inner portion. In such configurations, both the inner and outer portions may include adhesive regions and sealing regions as described above. However, the adhesive region of the inner portion may be larger, smaller, or the same size as the outer portion.

[0056] The sealing area, particularly for the inlet seal, if provided, may extend 360 degrees around the entire perimeter of the package on the inner surface of the package. The adhesive area may similarly extend 360 degrees on the inner surface of the package. Sealing areas on the outer surface of the package (if provided) may be provided to hold the package gussets or gusset fins (see [reference]). Figure 3C(As described) Keep in place. Furthermore, the adhesive area and sealing area on the outer surface of the package may not extend completely around the package, i.e., extend 360 degrees around the package. Alternatively, the inlet seal may include a very small opening adjacent to the gusset fins and / or near the midpoint of the inlet seal to facilitate opening. Similarly, the adhesive area may include a small opening adjacent to the gusset fins and / or near the midpoint of the inlet seal to facilitate opening.

[0057] Holding the gusseted fins in place offers several advantages. For example, adhesively attaching the gusseted fins together provides a flat sealing area without protruding flaps or fins. This can provide improved handling during processing, such as placing the package into a shipping container. Additionally, adhesively attaching the gusseted fins provides a more compact package shape, allowing for more efficient use of space within the shipping container. The attachment of the gusseted fins allows for a flatter seal within the attachment area. And when the attachment area is located on the top sheet, this can facilitate the lateral folding of a portion of the top sheet to form a flatter top package, which is beneficial for package stacking. Notably, when a portion of the top sheet is laterally folded, additional adhesive can be provided to attach the laterally folded portion of the top sheet to another portion or another piece of the top sheet of the package. Adhesively attaching the gusseted fins can provide additional carrying features for the consumer. For example, the consumer can place their fingers between the attached gusseted fins. Finally, the attached gussets provide a more aesthetically pleasing appearance for the package. Attached gusset fins are more visually appealing than gusset fins that are not attached to each other.

[0058] To withstand the harsh conditions of transportation, storage, and handling by consumers, seals must possess the necessary strength. Several variables, namely the type of seal and the compression level of one or more absorbent articles within the package, complicate the requirements for the necessary seal strength. An additional factor complicates these requirements is that adhesives are considered non-recyclable materials. However, the inventors have surprisingly discovered that by carefully selecting the type, weight percentage, and application pattern of the adhesive, seal strength requirements can be met while maintaining the recyclability of the packaging material.

[0059] Regarding the type of seal, the multiple seals of the package disclosed herein may include an inlet seal, a hoop seal, and a bottom seal. The inlet seal may be provided as a seal for a consumer to open the package to access one or more absorbent articles within it. The hoop seal may be an initial seal formed during the manufacturing process of the package. See reference... Figure 1A and Figure 1B The clamp seal is described in more detail. The bottom seal can be positioned on the base plate. (See reference...) Figures 2A to 2CThe bottom seal and its configuration are discussed in more detail. Flow package packages can also be configured to include these seals. Alternatively, a flow package package may include a pair of opposing end seals and a clamp seal between the end seals. In this configuration, an inlet seal can be provided similarly. (See reference...) Figure 5A and Figure 5B The end seals were discussed in more detail.

[0060] For absorbent articles that are typically compressed before being placed within a package, the hoop seal may require a higher tensile strength than, for example, the seals of the bottom and / or top plates. Additional examples are envisioned where at least one seal has a higher tensile strength than another. For instance, the bottom seal may have a higher tensile strength than the hoop seal and / or the inlet seal. Similarly, the inlet seal may have a higher tensile strength than the hoop seal and / or the bottom seal.

[0061] The packaging of this disclosure may include a seal having a tensile strength of at least 3 N / in. For example, each of a plurality of seals in the packaging of this disclosure may have a tensile strength between 3 N / in and 40 N / in, more preferably between 3 N / in and 35 N / in, or most preferably between 3 N / in and 30 N / in, specifically listed in these ranges and all values ​​within any range therefrom. For packaging comprising absorbent articles that do not have significant compression (e.g., menstrual pads, mild adult incontinence pads, liner pads, etc.), the tensile strength of the seal of such packaging may be between 3 N / in and 25 N / in, more preferably between 3 N / in and 20 N / in, or most preferably between 3 N / in and 15 N / in, specifically listed in these ranges and all values ​​within any range therefrom.

[0062] As mentioned above, for packages including compressible absorbent articles, the clamp seal may have a higher tensile strength than at least one of the other seals. For example, the clamp seal may have a tensile strength between 15 N / in and about 40 N / in, more preferably about 20 N / in and about 35 N / in, or most preferably about 22 N / in and about 30 N / in, specifically listed in these ranges and all values ​​within any such range. In such packages, one or more absorbent articles may comprise diapers or adult incontinence pants or adult incontinence pads for moderate to heavy use.

[0063] Additionally, the inlet seal may have lower tensile strength than the hoop seal and / or any other seal. For example, in a form where the inlet seal is positioned on the top flap of the package, there is typically not as much load on the hoop seal and other seals (e.g., bottom seal, end seal). It is worth noting that the inlet seal may be located on one or more of the top flap, right flap, and / or left flap. Alternatively, for a package that includes both end seals and hoop seals, one of the end seals may serve as the inlet seal.

[0064] Alternatively, the packaging of this disclosure may be configured such that the seals have similar tensile strength. For example, each of a plurality of seals may have a tensile strength of at least 10 N / in. In such configurations, each of these seals may have a tensile strength within 15% of the tensile strength of the remaining seals in the packaging. However, as previously stated, since adhesives are considered non-recyclable materials, their use should be carefully examined to ensure that the packaging material retains its recyclability. The tensile strength of the seals mentioned herein can be determined by the tensile testing method described in ASTM F88-06 as modified herein.

[0065] The inventors have surprisingly discovered that applying adhesive to both the sealing area and the adhesive area can affect the strength of the seal. For example, each of the sealing area and / or adhesive area can have 100% adhesive coverage. A sealing area with 100% adhesive coverage means that the sealing area is 100% covered by the adhesive. 100% adhesive coverage of the adhesive area means that the adhesive area is 100% covered by the adhesive. It is noteworthy that although the adhesive area is larger than the sealing area, it may only cover a portion of the inner surface of the package.

[0066] For clarity, the sealing area is where two parts of the packaging material join together. The adhesive area outside the sealing area is the part of the packaging material that contains the adhesive but does not join with other parts of the packaging material.

[0067] However, the inventors have discovered that, for example, a smaller amount of adhesive can be used in a certain pattern while still meeting the tensile strength of the seal described herein. The inventors have also discovered that one or more of the plurality of sealing regions can have an adhesive coverage of between 50% and 100%, specifically including these ranges and all values ​​within any range arising therefrom. However, in the case of using colorants and / or coatings, the seal can exhibit higher strength than a seal without colorants and / or coatings. One or more sealing regions may include colorants and / or coatings. For example, one or more sealing regions may have a colorant and / or coating coverage of between 25% and 100%, more preferably between about 30% and 100%, or most preferably between about 40% and 100%, specifically listing these ranges and all values ​​within any range arising therefrom.

[0068] On the other hand, the adhesive area may have an adhesive coverage of between 25% and 100%, more preferably between about 25% and 80%, or most preferably between about 25% and 75%, specifically listing these ranges and all values ​​within any range therefrom. And similar to the sealing area, the adhesive area may include colorant and / or coating. For example, one or more sealing areas may have a colorant and / or coating coverage of between 25% and 100%, more preferably between about 30% and 100%, or most preferably between about 40% and 100%, specifically listing these ranges and all values ​​within any range therefrom. It is noteworthy that when the adhesive area is located on the outer surface of the packaging material, the colorant and / or coating coverage can be 100%, especially when the adhesive area is visible to the consumer. This will ensure that these adhesive areas appear similar to the areas of the packaging material surrounding the adhesive area.

[0069] Regarding the application of adhesive in a pattern in one or more of the sealing area and / or adhesive area, the inventors have surprisingly discovered that the adhesive can be applied in stripes. For example, the stripes may be generally parallel to the longitudinal centerline of the sealing area or the longitudinal centerline of the adhesive area. Alternatively, the stripes may be generally perpendicular to the longitudinal centerline of the sealing area or the longitudinal centerline of the adhesive area. Alternatively, the stripes may be oriented at an angle generally relative to the longitudinal centerline of the sealing area or the adhesive area. Alternatively, the stripes may be provided via a plurality of first stripes and a plurality of second stripes, wherein the first stripes are oriented at a first angle relative to the longitudinal centerline of the sealing area or the adhesive area, and the second plurality of stripes are oriented at a second angle relative to the longitudinal centerline of the sealing area or the adhesive area. The first angle and the second angle may be different. Any suitable angle may be used. To further illustrate this example, the first angle relative to the longitudinal centerline of the adhesive area or the sealing area may be between 10 degrees and about 80 degrees, more preferably between 30 degrees and about 50 degrees, specifically including all values ​​within these ranges and any ranges arising therefrom. The second angle with respect to the longitudinal centerline of the sealing area or adhesive area may be between 100 degrees and about 170 degrees, more preferably between 120 degrees and about 140 degrees, specifically including all values ​​within these ranges and any ranges arising therefrom. In another example, the pattern may include a plurality of discrete circles, ellipses, polygons, stripes, or combinations thereof.

[0070] As previously stated, the packaging disclosed herein may include an inlet seal. The inlet seal (if provided) includes an inlet sealing region and an adhesive region. The inlet sealing region may be constructed as described herein with respect to the sealing region. Furthermore, the adhesive region associated with the inlet seal may be constructed as described herein.

[0071] It is worth noting that applying adhesive (whether in the form of stripes, dots, polygons, or combinations thereof) to discrete, spaced sections, as described, can also aid in the decomposition of packaging materials. For example, the spacing between adhesive sections can increase the speed of industrial and / or residential composting processes. It is believed that the spacing between adhesive sections can increase the exposure of the adhesive and natural fibers to air, bacteria, and / or microorganisms.

[0072] Similarly, the type and amount of adhesive used for the seals of the packaging components of this disclosure can affect the recyclability of the packaging. For example, water-soluble adhesives are particularly suitable for the seals of the packaging components of this disclosure during the repulping stage of the decomposition step in the recycling process. Such adhesives include starch-based adhesives, polyvinyl alcohol-based adhesives, and polyethylene oxide adhesives. A suitable example of a starch-based adhesive is available under the trade name AP0420CR from LD Davis, Monroe, North Carolina. A suitable example of a polyvinyl alcohol-based adhesive is available under the trade name Selvol 205 from Sekisui Chemical Company, Osaka, Japan. A suitable example of a polyethylene oxide adhesive is available under the trade name WSR N-80 from Dow Chemicals Co., Midland, Michigan.

[0073] If the adhesive is not water-soluble, a water-dispersible adhesive can be used similarly. Suitable examples of water-dispersible adhesives include thermoplastic elastomer-based adhesives and polyvinyl acetate-based adhesives. A suitable example of a thermoplastic elastomer-based adhesive is available under the trade name Yunico 491 from Actega, Blue Ash, Ohio. A suitable example of a polyvinyl acetate-based adhesive is available under the trade name Aquagrip 4419U01 from Bostik, Milwaukee, Wisconsin. Another suitable example of a polyvinyl acetate-based adhesive is available under the trade name PD-0330 from HBFuller.

[0074] Any suitable pressure-sensitive adhesive may also be used. A suitable example of a pressure-sensitive adhesive includes a product sold by Formulated Polymer Products Ltd., located in Bury, Lancashire, England, under the trade name FP2154. As a specific example, inlet seals may comprise pressure-sensitive adhesives.

[0075] Unbound by theory, it is believed that packaging using water-soluble adhesives may contain a higher weight percentage of such adhesives than adhesives that are only water-dispersible. For example, packaging containing water-soluble adhesives may contain a first weight percentage of adhesive, while packaging containing water-dispersible adhesives may contain a second weight percentage of adhesive. For the purpose of recycling packaging materials, it is believed that the first weight percentage may be greater than the second weight percentage. Data regarding suitable weight percentages of adhesives are provided in Table 1 below.

[0076] The following samples are shown in Table 1. Samples 1 to 4: purchased under the trade name Axello Zap from [unclear - possibly a brand name].

[0077]

[0078] Table 1

[0079] Table 2 below shows the recyclability data based on the PTS method described herein. It is believed that the percentage of recyclable material obtained via the PTS method will be similar to the percentage yield of recyclable material of samples 1 and 2 tested only under the PTS method, as determined by Western Michigan testing.

[0080] These tests are discussed in more detail below.

[0081]

[0082] Table 2

[0083] As previously stated, the packaging disclosed herein can utilize soluble adhesives, dispersible adhesives, pressure-sensitive adhesives, or any combination thereof. However, the choice of adhesive should be carefully considered from a weight percentage perspective. In the case of using soluble adhesives, the adhesive may include at least one of the following: starch-based adhesives, polyethylene oxide adhesives, polyvinyl alcohol-based adhesives, or combinations thereof. Sample 4 shows that even at 14% by weight, the soluble adhesive (starch-based) passed the PTS method disclosed herein, while the same weight percentage of polyvinyl acetate failed the PTS test.

[0084] Where a dispersible adhesive is required, as before, care should be taken to ensure that the packaging material retains its recyclability. Where an adhesive (such as a polyvinyl acetate-based adhesive) is required, the weight percentage may be about 12% by weight or less, more preferably about 10% by weight or less, specifically listing these ranges and all values ​​within any range thereof. For example, a polyvinyl acetate-based adhesive may be used in amounts between about 0.5% by weight and about 12% by weight, more preferably about 0.5% by weight and about 10% by weight, or most preferably about 0.5% by weight and about 7% by weight, specifically listing these ranges and all values ​​within any range thereof.

[0085] The aforementioned weight percentages are considered suitable for achieving a total rejection percentage of less than 5% according to the PTS method mentioned herein and passing the handwritten paper test. As the data indicate, while 14% by weight of polyvinyl acetate did not pass the PTS method, it passed the Western Michigan method. It is believed that higher weight percentages of polyvinyl acetate can be used in some packaging materials of this disclosure and still meet the recyclability requirements of some jurisdictions (e.g., Western Michigan). For example, the weight percentage of polyvinyl acetate adhesive used for Western Michigan testing is considered to be in the range of 0.5% by weight to about 20% by weight, 0.5% by weight to about 15% by weight, or most preferably about 0.5% by weight to about 10% by weight, specifically listed in these ranges and all values ​​within any range therefrom.

[0086] However, it is worth noting that when the dispersible adhesive is a thermoplastic elastomer-based adhesive, different weight percentages can be applied. For example, when the dispersible adhesive includes a thermoplastic elastomer-based adhesive, the weight percentage can be about 7% by weight or less, more preferably about 5% by weight or less, or most preferably about 4% by weight or less, specifically listing these ranges and all values ​​within any range therefrom. Additionally, in this example, the weight percentage can be between about 0.5% by weight and about 7% by weight, more preferably about 0.5% by weight and about 5% by weight, or most preferably about 0.5% by weight and about 4% by weight, specifically listing these ranges and all values ​​within any range therefrom.

[0087] Similar to polyvinyl acetate adhesives, the aforementioned weight percentages are considered suitable for achieving a total rejection percentage of less than 5% according to the PTS method described herein, as well as for handmade paper testing. It is believed that higher weight percentages of thermoplastic elastomer-based adhesives can be used while still meeting the recyclability requirements of some jurisdictions (e.g., Western Michigan). For example, the weight percentage of thermoplastic elastomer-based adhesives used for Western Michigan testing is considered to be in the range of 0.5 wt% to about 15 wt%, 0.5 wt% to about 12 wt%, or most preferably about 0.5 wt% to about 7 wt%, with specific examples of these ranges and all values ​​within any such range.

[0088] The inventors have surprisingly discovered that thermoplastic elastomers and polyvinyl acetate-based adhesives can provide high seal strength while also being extremely flexible from an application perspective. For example, these adhesives allow the same flexibility—i.e., heat-sealable—where heat sealing is already used as part of existing production lines. Furthermore, these adhesives can be printed onto packaging materials, which is advantageous in manufacturing. These adhesives can be applied in patterns, such as those described herein.

[0089] It is worth noting that the sealing characteristics of the packaging components disclosed herein can depend on how the packaging material is handled. For example, absorbent product manufacturers may purchase pre-formed packaging components. In such instances, absorbent product manufacturers may receive substantially open bags from paper packaging manufacturers, the bags comprising a sheet with a hoop seal and a sheet with another seal, such as a bottom seal. The other seal, such as the bottom seal, may be configured in a block, cross, or clamp arrangement. Figures 2A to 2C This configuration is discussed in more detail. The Totani configuration is also envisioned. TM Configuration, and refer to Figure 2D The description is as shown in Figure 2F.

[0090] When forming the inlet seal, the absorbent product manufacturer may use the same adhesive as that used in hoop seals and / or other seals, such as bottom seals. Alternatively, the absorbent product manufacturer may use an adhesive different from that used in hoop seals and / or other seals, such as bottom seals.

[0091] Absorbent product manufacturers may also produce the packaging themselves. For example, an absorbent product manufacturer may have the capability to produce its own open-faced bags, then fill the open-faced bags with one or more absorbent products, and then seal the open-faced bags, without needing to purchase such bags from a supplier. Another example of absorbent product manufacturers producing their own packaging includes flow package configurations. In such configurations, the manufacturer forms the packaging around one or more absorbent products, rather than placing one or more absorbent products in a pre-formed bag. These types of packaging disclosed herein may include end seals and hoop seals, and may additionally include an inlet seal, or one of the end seals may serve as an inlet seal.

[0092] Whether the absorbent product manufacturer purchases prefabricated bags from a supplier or manufactures the packaging itself, it can still provide the aforementioned sealing configuration. That is, at least one seal may include an adhesive different from the other seals, or the adhesive in the seal may include the same adhesive.

[0093] Some hypothetical examples include packages in which hoop seals and other seals, such as bottom seals and end seals, contain a soluble adhesive and where the inlet seal contains a dispersible adhesive. Another hypothetical example is a case where hoop seals and other seals, such as bottom seals and end seals, contain a soluble adhesive and where the inlet seal or end seal contains a pressure-sensitive adhesive. Another hypothetical example is where all seals contain a dispersible adhesive. Another example is where all seals contain a soluble adhesive. Yet another example is where all seals contain the same adhesive, such as a pressure-sensitive adhesive, a soluble adhesive, or a dispersible adhesive. Another example is where at least one of multiple seals contains a pressure-sensitive adhesive.

[0094] Recyclability

[0095] Currently, there is no universal standard for determining whether paper materials are recyclable. Generally speaking, the higher the content of natural materials, such as natural fibers, and the lower the content of non-recyclable materials, the higher the likelihood of recycling. Some specific examples of standards that can be used to determine whether packaging materials are recyclable include the PTS method and the Western Michigan method, each of which is described in more detail below. These methods relate to the recyclability of materials containing wood fibers and / or pulp fibers.

[0096] The packaging material disclosed herein may contain natural fibers that form paper. The packaging material may contain at least 50% by weight of natural fibers, more preferably at least 70% by weight of natural fibers, or most preferably at least 90% by weight of natural fibers, specifically listed in these ranges and all values ​​within any range therefrom. For example, the packaging material may contain 99.9% by weight of natural fibers. The packaging material disclosed herein may contain between 50% by weight and 100% by weight of natural fibers, more preferably between 70% by weight and 99.9% by weight, or most preferably between 90% by weight and 99.9% by weight of natural fibers. It is noteworthy that when the weight percentage of natural fibers is less than 100%, there is room for coatings, colorants, films, and / or adhesives, if desired.

[0097] To increase the recyclability of packaging materials, the total weight percentage of non-recyclable materials (e.g., adhesives, coatings, and / or colorants) in the packaging materials of this disclosure can be carefully selected. For example, the packaging materials of this disclosure may contain 50% by weight or less, more preferably 30% by weight or less, or most preferably about 15% by weight or less of non-recyclable materials, specifically including these ranges and all values ​​within any range arising therefrom. As another example, the packaging materials of this disclosure may contain about 0.1% by weight to about 50% by weight, more preferably about 0.1% by weight to about 30% by weight, or most preferably about 0.1% by weight to about 15% by weight of non-recyclable materials, specifically including these ranges and all values ​​within any range arising therefrom. In a specific example, the weight percentage of non-recyclable materials may be 5% by weight or less, or between 0.1% by weight and 5% by weight, specifically listing these ranges and all values ​​within any range arising therefrom.

[0098] The effectiveness of the recycling process of the packaging materials of this disclosure can be determined by the percentage of recyclability. The packaging materials of this disclosure may exhibit a recyclability percentage of 70% or greater, more preferably 80% or greater, or most preferably 90% or greater, specifically listing these ranges and all values ​​within any such range. The packaging materials of this disclosure may have a recyclability percentage between 70% and 99.9%, more preferably about 80% to 99.9%, or most preferably about 90% to 99.9%, specifically listing these ranges and all values ​​within any such range. In a specific example, the packaging materials of this disclosure may exhibit a recyclability percentage between about 95% and 99.9%, more preferably about 97% to 99.9%, or most preferably about 98% to 99.9%, specifically including these ranges and all values ​​within any such range. The percentage of recyclable packaging materials disclosed herein can be determined by test PTS-RH:021 / 97 (draft October 2019) under Category II, as conducted by Papiertechnische Stiftung located at Pirnaer Strasse 37, 01809 Heidenau, Germany.

[0099] Along with the recyclability percentage, the total rejection percentage can be determined via the PTS-RH:021 / 97 (October 2019 draft) test method under Category II. However, unlike the recyclability percentage, the total rejection percentage can be reduced to increase the likelihood of recyclability. For example, the total rejection percentage of the packaging materials of this disclosure can be about 30% or less, more preferably about 20% or less, or most preferably about 10% or less, specifically including all values ​​within these ranges and any ranges arising therefrom. For example, the total rejection percentage of the packaging materials of this disclosure can be from 0.1% to 30%, more preferably from 0.1% to 20%, or most preferably from 0.1% to 10%, specifically including all values ​​within these ranges and any ranges arising therefrom. In a specific example, the total rejection percentage can be less than 5%, or between 0.1% and 5%, more preferably from 0.1% to 3%, or most preferably from 0.1% to 2%, specifically including all values ​​within these ranges and any ranges arising therefrom.

[0100] For clarity, the percentage of non-recyclable material is not necessarily correlated 1:1 with the total rejection percentage. For example, the use of soluble adhesives is disclosed herein. Since these adhesives are designed to dissolve in recycling processes, they theoretically have no effect on the total rejection percentage; however, they will increase the weight percentage of non-recyclable material.

[0101] It is worth noting that the test method PTS-RH:021 / 97 (draft October 2019) under Category II includes a handmade paper inspection component. Trained screening personnel inspect one or more sheets of recycled packaging material handmade paper for visual defects and stickiness. If the number of visual defects is too high or if the paper is too sticky, the packaging material is rejected. According to the PTS-RH:021 / 97 (draft October 2019) method under Category II, if the number of visual defects is acceptable and the handmade paper is not too sticky, the packaging material is approved for further processing. During this step of the PTS method, the packaging material of this disclosure can produce an acceptable level of visual defects and stickiness, thus allowing for further processing.

[0102] The packaging materials disclosed herein can produce the previously mentioned percentage of recyclability and pass the handmade paper screening method. Therefore, when subjected to the recycling test method of PTS-RH:021 / 97 (October 2019 draft) under Category II, the packaging materials disclosed herein can obtain a "pass" overall score or final result.

[0103] It is also worth noting that alternative methods exist for determining the percentage of recyclable material in the packaging materials of this disclosure. A test method called the repulpingability test, conducted by Western Michigan University, can provide the percentage yield of recyclable material. According to the repulpingability test, the packaging materials of this disclosure can achieve a percentage yield greater than about 70%, more preferably greater than about 80%, or most preferably greater than about 90%, specifically listing these ranges and all values ​​within any range therefrom. The packaging materials of this disclosure can have a percentage yield between 70% and 99.9%, more preferably about 80% to 99.9%, or most preferably about 90% to 99.9%, specifically listing these ranges and all values ​​within any range therefrom. In a specific example, the packaging materials of this disclosure can exhibit a percentage yield of recyclable material between 80% and 99.9%, specifically including all values ​​within this range and any range therefrom. In such examples, the packaging materials may include a brown base color. In another specific example, the packaging materials disclosed herein may exhibit a percentage yield of recyclable material between 85% and 99.9%, specifically including all values ​​within this range and any ranges arising therefrom. In such examples, the packaging materials may include a white base color. The base color of the packaging materials is discussed in more detail herein.

[0104] It can be anticipated that while the packaging materials disclosed herein are recyclable, they may themselves contain recycled materials. Such determination can be made through visual inspection of the packaging materials. For example, manufacturers often advertise the use of recycled materials in an attempt to demonstrate their eco-friendly packaging methods. To further expand on this example, some manufacturers may utilize logos, such as leaves, and wording indicating the use of recycled materials in the packaging materials. Typically, manufacturers may also specify the percentage of recycled materials used, such as over 50%, over 70%, etc.

[0105] Visual inspection can be as simple as using the human eye to check for markings indicating the use of recycled materials on packaging. Additionally or alternatively, visual inspection may include microscopy, such as optical microscopy, scanning electron microscopy, or other suitable methods known in the art. For example, packaging materials containing recycled paper fibers may look different under a microscope because of the wider range of natural fiber types available compared to packaging materials containing 100% non-recycled paper. As another example, under a microscope (likely a scanning electron microscope), recycled fibers may exhibit more fibrillation than their virgin fiber counterparts due to their processing.

[0106] Paints and colorants

[0107] As previously described, each of the multiple sheets includes an inner surface and an outer surface. The outer and / or inner surfaces of one or more sheets may include colorants and / or coatings that form brand logos, packaging information, and / or background colors, etc., on the packaging. Brand logos and / or packaging information may be affixed to at least a portion of the outer and / or inner surfaces of at least one sheet (e.g., a consumer-facing sheet). Brand logos may include identifiers, product names, trademarks, icons, etc., associated with the absorbent product within the packaging. Brand logos can be used to inform consumers of the brand of the absorbent product within the packaging. For example, brand logos for feminine hygiene pad packaging may include the brand name.

[0108] Packaging information associated with the absorbent articles within the package may include the size of the absorbent articles, the quantity of absorbent articles within the package, exemplary images of the absorbent articles contained in the package, recyclability markings, etc. Additionally, packaging information may include information about the packaging materials themselves, such as recyclability markings, certificates from various organizations, etc. For example, packaging information for feminine hygiene pad packages may include size indications, such as "Size 1". Other pieces of the package may similarly include brand logos, packaging information and / or background colors, as well as information associated with consumer-facing pieces.

[0109] Additionally, one or more sheets of the packaging disclosed herein may include colorants and / or coatings to provide a background color to the packaging of this disclosure. To further clarify the background color, it is worth noting that the packaging material includes a base color. The base color of the packaging material is the color of the packaging material without colorants and / or coatings. For example, bleached packaging material is white, unbleached packaging material is brown, and packaging material containing recycled contents is gray. The background color is any color that is not a base color, such as blue, red, green, yellow, purple, orange, black, or combinations thereof. However, if the background color is obtained through colorants and / or coatings, the background color may also include white, brown, or gray.

[0110] As previously mentioned, the use of colorants and / or coatings can be considered a contaminant in recyclable streams. Therefore, the use of colorants and / or coatings should be carefully examined.

[0111] To reduce the use of colorants and / or coatings to facilitate recycling processes, the base color of the packaging material can be utilized. For example, a package is envisioned in which the consumer-facing sheet includes branding, packaging information, and / or a background color, while one or more sheets include the base color. In a specific example, the back sheet and / or rear sheet may utilize the base color of the packaging material instead of the background color. One or more of the back sheet, top sheet, left sheet, right sheet, rear sheet, or any combination thereof may utilize the base color of the packaging material instead of the background color. In such examples, the background color may be set on one or more sheets (e.g., the consumer-facing sheet), while the base color may be used on one or more sheets. As another example, the consumer-facing sheet may include the base color independently or in combination with other sheets. To further develop this example, the package may include absorbent articles comprising natural base components, such as a cotton top sheet and / or chlorine-free bleached pulp in the absorbent core. In such examples, the consumer-facing sheet may include a white base color. In the same example, the consumer-facing sheet may also include branding, a background color (associated with the branding), and / or packaging information, along with the base color. For example, one or more sheets may include packaging information, which in turn includes a base color. To further develop this example, the base color may be a first color, such as white, and a background color may be applied to the sheets of the negative image containing the packaging information such that the packaging information or a portion thereof is not obscured by the background color, and the packaging information includes the first color.

[0112] Another approach to reducing the use of colorants and / or coatings in the packaging materials of this disclosure is to apply variable coverage of colorants and / or coatings to various sheets. For example, a first sheet may have a different percentage coverage of colorants and / or coatings than a second sheet. To further illustrate this example, a consumer-facing sheet may have a higher percentage coverage of colorants and / or coatings than another sheet (e.g., a backing sheet) of the package. As mentioned above, absorbent articles made of natural bases without added colorants and / or fragrances, such as cotton top sheets or other components, and chlorine-free bleached cores, may rely more heavily on the base color of the packaging material. For example, such packages may include consumer-facing sheets having a colorant coverage of 75% or less, more preferably 50% or less, or most preferably 40% or less. Additionally, consumer-facing sheets may have a colorant coverage of between about 10% and about 75%, more preferably about 15% to about 50%, or most preferably about 20% to about 40%, specifically listing these ranges and all values ​​within any such range.

[0113] In such packages, other sheets may be configured with a higher percentage of colorant coverage, a lower percentage of colorant coverage, or a combination thereof. For example, in such configurations, the back sheet may have a lower percentage of colorant coverage. The rear sheet, left sheet, and / or right sheet may have a higher percentage of colorant coverage, or more preferably a lower percentage of colorant coverage. These same values ​​can also be applied to the flow package configurations described herein.

[0114] The described natural-based products are not necessarily limited to the aforementioned colorant coverage percentages; however, a lower colorant percentage can mean a lower weight percentage of colorant, which can be beneficial from a recyclability perspective. For example, the packaging of absorbent articles according to this disclosure may include consumer-facing sheets having a colorant coverage percentage of 100%, more preferably 99% or less, or most preferably 98% or less. For instance, packaging according to this disclosure may include consumer-facing sheets having a colorant coverage percentage between 60% and 100%, more preferably about 60% to 99%, or most preferably about 60% to 98%. In such configurations, other sheets may have the same percentage of colorant coverage, or more preferably a lower percentage. The colorant coverage percentage is determined via the colorant coverage percentage measurement method described herein.

[0115] While any suitable colorant can be used, it is believed that water-based colorants are generally more soluble in water during recycling processes. Therefore, water-based colorants can be advantageous for the recycling process of the packaging disclosed herein. Any suitable water-based colorant can be used. Water-based colorants are known in the art.

[0116] It is worth noting that solvent-based colorants and / or energy-curable colorants can also be used. However, using these types of colorants increases the complexity of packaging material manufacturing. For example, solvent-based colorants often release volatile organic compounds that need to be removed from the air. Additionally, solvent-based colorants may contain components that are not readily soluble in water during recycling processes, which can negatively impact the recyclability of the packaging material.

[0117] Energy-curable colorants can also be used; however, very similar to solvent-based colorants, energy-curable colorants increase the complexity of packaging material processing. Also very similar to solvent-based colorants, energy-curable colorants may contain components that are not readily soluble in water during recycling processes, which could negatively impact the recyclability of the packaging material.

[0118] Any suitable coating for packaging materials can be used. Coatings can be used to protect background colors, branding, and / or packaging information. Additionally, coatings can be used to provide beneficial effects such as antistatic properties, coefficient of friction benefits, and / or aesthetic benefits (e.g., gloss, matte, satin, high gloss, etc.). Very similar to water-based colorants, water-based coatings are believed to facilitate the recycling of packaging materials, if utilized. Suitable coatings include varnishes known in the art. Any suitable coating can be used.

[0119] To withstand the harsh conditions of manufacturing processes that house multiple absorbent articles within a package, the harsh conditions of transportation, to provide protection against environmental damage during transport and on shelves, and to provide product protection in the consumer's home, packaging materials may possess a certain level of strength, tensile strength, and resilience. For example, the packaging materials of this disclosure may exhibit a minimum tensile strength (MD) of at least 4.7 kN / m, more preferably at least 7 kN / m, or most preferably at least 8 kN / m, specifically listing these ranges and all values ​​within any such range. The MD tensile strength may be between 4.7 kN / m and 8.5 kN / m, more preferably between 5.2 kN / m and 8.2 kN / m, or most preferably between 5.5 kN / m and 8.0 kN / m, specifically listing these ranges and all values ​​within any such range. The MD tensile strength is measured using ISO 1924-3 as modified herein.

[0120] For example, the packaging material of this disclosure may exhibit a CD tensile strength of at least 2.7 kN / m, more preferably at least 4 kN / m, or most preferably at least 5.5 kN / m, specifically listing these ranges and all values ​​within any range therefrom. The CD tensile strength may be between 2.7 kN / m and 6.5 kN / m, more preferably between 2.7 kN / m and 6.2 kN / m, or most preferably between 2.7 kN / m and 6 kN / m, specifically listing these ranges and all values ​​within any range therefrom. The CD tensile strength is measured using ISO 1924-3 as modified herein.

[0121] For example, the packaging materials of this disclosure may exhibit a burst strength of at least 185 kPa, more preferably at least 250 kPa, or most preferably at least 550 kPa, specifically listing these ranges and all values ​​within any such range. The burst strength of the packaging materials of this disclosure may be between 185 kPa and 600 kPa, more preferably between 220 kPa and 550 kPa, or most preferably between 250 kPa and 500 kPa, specifically listing these ranges and all values ​​within any such range. Burst strength is measured using ISO 2758 as modified herein.

[0122] For example, the packaging materials of this disclosure may exhibit a more preferred minimum of 3%, or most preferably at least 6%, tensile strength at break (MD), specifically listed in these ranges and all values ​​within any range therefrom. The packaging materials of this disclosure may exhibit a MD tensile strength at break of 3% to 6.5%, more preferably 3.2% to 6.2%, or most preferably 3.5% to 6%, specifically listed in these ranges and all values ​​within any range therefrom. MD tensile strength at break is measured using ISO 1924-3 as modified herein.

[0123] For example, the packaging materials of this disclosure may exhibit a CD breaking tensile strength of at least 4%, more preferably at least 6%, or most preferably at least 9%, specifically listing these ranges and all values ​​within any range therefrom. The packaging materials of this disclosure may exhibit a CD breaking tensile strength of 4% to 10%, more preferably 4.5% to 9.5%, or most preferably 5% to 9%, specifically listing these ranges and all values ​​within any range therefrom. CD breaking tensile strength is measured using ISO 1924-3 as modified herein.

[0124] For example, besides affecting the strength and resilience of packaging materials, the basis weight of packaging materials can also affect the "feeling" of the packaging to consumers. Too low a basis weight makes the packaging feel too fragile, while too high a basis weight makes it feel too inflexible. The packaging materials disclosed herein may have a basis weight between 50 gsm and 120 gsm, more preferably between 60 gsm and 105 gsm, or most preferably between 70 gsm and 90 gsm, specifically listing these ranges and all values ​​within any range therefrom. The basis weight can be determined via ISO 536 as modified herein.

[0125] It is worth noting that the lower basis weight of 50 gsm may require some precautions during processing. For high-speed packaging processes, a basis weight of 50 gsm may not provide the required level of reliability. It is believed that high-speed packaging processes induce strain within the packaging material, while slower packaging processes do not. Therefore, from a high-speed manufacturing perspective, 60 gsm may be the minimum required basis weight for packaging material. In cases using manual packaging or low-speed packaging processes, 50 gsm may be sufficient as the minimum basis weight for packaging material. Alternatively, special processes and / or treatments that are strictly controlled to ensure minimal strain is applied to packaging material of 50 gsm or lower may be sufficient to allow the use of packaging material of 50 gsm.

[0126] Regarding thickness, the packaging materials of this disclosure may exhibit a thickness of at least 50 μm, more preferably at least 70 μm, or most preferably at least 90 μm, specifically listing these ranges and all values ​​within any such range. The packaging materials of this disclosure may exhibit a thickness between 50 μm and 110 μm, more preferably between 55 μm and 105 μm, or most preferably between 60 μm and 100 μm, specifically listing these ranges and all values ​​within any such range. Thickness is measured using ISO 534 as modified herein.

[0127] It is worth noting that the packaging material disclosed herein differs from cardboard boxes, linerboard, and kraft paper bags. For example, cardboard boxes are less flexible than the packaging material disclosed herein. Cardboard boxes are designed and inherently stiffer than the packaging material disclosed herein, and their stiffness may make them more difficult to process on conversion processing lines. Additionally, cardboard boxes have a higher basis weight than the packaging material disclosed herein.

[0128] Similarly, cardboard differs from the packaging materials disclosed herein. The basis weight of cardboard is significantly higher than that of the packaging materials disclosed herein. Furthermore, cardboard is much less flexible than the packaging materials disclosed herein. Cardboard materials are typically grooved and comprise three layers of paper, thus differing structurally from the packaging materials disclosed herein. Additionally, the basis weight of the packaging materials disclosed herein is significantly lower than that of cardboard.

[0129] The packaging materials of this disclosure possess several advantages over cardboard and linerboard, including flexibility as discussed herein. However, another advantage is that the packaging materials of this disclosure occupy less space compared to their larger volume counterparts in cardboard and linerboard. Another advantage of the packaging materials of this disclosure is that they allow absorbent articles therein to be compressed within the package. This allows more product to be packed into a smaller package, which also enables efficiency. An additional advantage is that a single layer (one layer) of the packaging materials of this disclosure can form the package of this disclosure. The inventors have discovered that, at least in part, due to the flexibility, strength, and resilience of the packaging materials, the package of this disclosure can be formed from a single layer (one layer) of the packaging materials of this disclosure.

[0130] The packaging of this disclosure differs from the kraft paper bags commonly used in grocery stores for carrying groceries. As detailed elsewhere herein, the packaging material of this disclosure is sealed, encapsulating the absorbent articles and protecting them from external environmental influences. More specifically, the packaging of the absorbent articles according to this disclosure does not have an opening into which items can be placed. Instead, the packaging of the absorbent articles according to this disclosure is sealed to reduce the possibility of contamination of the absorbent articles during transportation, storage, and placement on store shelves.

[0131] Despite having reduced flexibility compared to plastic packaging and a lower basis weight than cardboard and linerboard, the packaging material disclosed herein can withstand the harsh conditions of the manufacturing process in which one or more absorbent articles are placed within the package, as well as the harsh conditions of transportation, providing protection against environmental damage during transportation and on the shelf, and providing product protection in the consumer's home.

[0132] It is also worth noting that, in addition to lacking the high tensile properties of conventional plastic packaging films, the packaging materials disclosed herein may also not provide the barrier properties of conventional plastic packaging films. For example, the packaging materials disclosed herein may not include functional barrier layers, such as foil layers, plastic layers, etc.

[0133] Conversely, packaging materials are envisioned to include a film layer disposed on the inner surface of a paper layer, wherein the film layer performs a barrier function. In such a form, a seal can be formed by heat-sealing the film to itself, or an adhesive can be provided to create one or more seals.

[0134] Furthermore, examples of direct contact between the absorbent article backing and the inner surface of the packaging material are envisioned. Packages including diapers of this disclosure can be constructed in this manner. Feminine hygiene pads, including menstrual pads, liners, adult incontinence pads, diaper inserts, reusable underwear inserts, etc., can be individually wrapped to protect the feminine underwear adhesive on their respective backings. In packages containing these articles, the individually wrapped articles can be in direct contact with the inner surface of the packaging material. It is envisioned that the wrapping material for individual articles may comprise the form of natural fibers as described herein. Additionally, as described herein, such wrapping materials can be recyclable.

[0135] As previously mentioned, absorbent product manufacturers can purchase pre-formed packaging materials into open-pocket bags or can purchase rolls of packaging material. Regardless of whether the packaging material is in rolls or pre-formed to a certain extent, the packaging disclosed herein begins with paper stock. Reference Figures 1A to 1B The edge portions 100 and 110 of the paper sheet 99 can be folded onto themselves and subsequently glued together to form a seal. For example, the side portions 100 and 110 of the sheet 99 can be folded or simply shifted laterally inward toward the longitudinal centerline 90 of the sheet 99. These edge portions can overlap and join together to form an overlap seal. Alternatively, the edge portions 100 and 110 can join together on their respective inner surfaces to form a butt seal. It is worth noting that butt seals tend to be less flat than overlap seals. Therefore, where the seal is at least partially located on the backing sheet, an overlap seal is desirable, allowing the package to lie on a flatter backing sheet. The joining of the edge portions 100 and 110 can be referred to as a clamp seal.

[0136] Now for reference Figures 1C-1EThe packaging material sheet can be appropriately folded to form bag side pleats 12b and 13b, and two side pleats 12a and 13a are formed on opposite sides to form a bag structure 4 having a first surface 10, a second surface 12 and a third surface 13, and a fourth surface 14 and a fifth surface 15, respectively. The open end 48 (e.g., a gusseted bag structure) is opposite the first surface 10. Each side pleat 12b, 13b is located at the corresponding second surface 12 or third surface 13. It is worth noting that in Figure 1C and Figure 1D The creases and folds shown are for packages with a block configuration or block bottom configuration. (See reference...) Figure 2B The corner braces and fold lines used in the clamping configuration are discussed in more detail, and references are made to... Figure 2C The cross configuration is discussed in more detail. Figure 2D and Figure 2E Totani is shown TM Bag structure.

[0137] The bag 4 can be filled by inserting articles, such as a stack of absorbent articles, through the open end 48. When the bag 4 is filled with multiple articles, for example by inserting articles from the open end 48, the means for introducing the articles into the bag 4 along with the articles applies some tension to each of the second surface 12 and the third surface 13 of the bag 4. For example, the articles are compressed before being inserted into the bag 4. Therefore, the articles expand slightly after being introduced into the bag 4, thereby applying some tension to the second surface 12 and the third surface 13, as well as the fourth surface 14 and the fifth surface 15. This tension is applied to each of the creases 12b, 13b at the respective second surface 12 and the third surface 13, particularly along the first side crease 12a and the second side crease 13a, through which the package maintains a generally parallelepiped shape.

[0138] As from Figure 1D It is understood that the open end 48 opposite to the first surface 10 can then be closed to form the sixth surface 11. Any suitable closure form can be utilized. For example, the sixth surface may include a closure gusset plate 11b formed by joining the edges of the bag 4 together and bonding them together to form a closure seal 11a and closure seal fins 11c extending from the closure seal 11a and the sixth surface 11. Alternatively, the sixth surface may include seams joined together in a block configuration or a cross configuration as discussed below.

[0139] Figure 2AAn example of a block configuration is shown. As shown, the first surface 10 may include a block configuration comprising seals 220 and 230. The first surface 10 may include a base portion 240. A first flap 250 of the packaging material may be folded onto the base portion 240. An adhesive may be provided to attach the first flap 250 of the packaging material to the base portion 240 to form a first seal 220. A second flap 260 of the packaging material may be folded and adhered to the base portion 240 and the top of the first flap 250 of the packaging material. An adhesive may be provided to attach the second flap 260 of the packaging material to the base portion 240 and the first flap 250 of the packaging material to form a second seal 230. A similar embodiment may be used for the sixth surface 11.

[0140] Another example of a sheet seal type that can be used with the packaging disclosed herein is a clamp-on configuration or a clamp-on bottom configuration. Figure 2B An example of a clamping configuration is shown. As shown, one of the key differences between the block bottom and clamping bottom configurations is the creases 12b and 13b. Instead of the creases on sides 12 and 13, the clamping configuration includes gusset plates 22b and 23b on the first surface 10. Additionally, in the clamping bottom configuration, the first surface 10 includes a fold line 10a, which may be absent in the block configuration.

[0141] For the sealing portion of the packaging material disclosed herein, a cross configuration is also acceptable. Figure 2C An example of a cross-bottom configuration is shown. As illustrated, a key difference between the cross configuration and the block configuration is that the corner braces 32b and 33b are oriented outwards. Conversely, in... Figure 1C In this configuration, fold lines 12a and 13a on the second surface 12 and the third surface 13, respectively, are oriented inwards before filling the package. Due to the orientation of the gussets 32b and 33b in the cross-shaped configuration, less energy is required to inflate the package for filling with absorbent material. For example, inwardly oriented folds, such as in a block configuration, would require outward displacement of the folds before filling. Furthermore, the outward orientation of the gussets reduces the likelihood that equipment used to guide the product into the package will obstruct the gussets of the cross-shaped configuration. This can reduce the likelihood of packaging accidents or manufacturing process stoppages due to quality issues.

[0142] Still refer to Figure 2CSimilar to the block configuration, the first surface 10 of the cross configuration includes seals 320 and 330. The first surface includes a base portion 340. A first flap 350 of the packaging material can be folded and adhered to the base portion 340. A first seal 320 can be provided to attach the first flap 350 of the packaging material to the base portion 340. A second flap 360 of the packaging material can be folded onto the base portion 340 and onto the top of the first flap 350 of the packaging material. A second seal 330 can be provided to adhesively attach the second flap 360 of the packaging material to the base portion 340 and the first flap 350 of the packaging material. A similar embodiment can be used for the sixth surface (formed after the absorbent article is placed therein).

[0143] For example, Totani can be used. TM Totani style bag. TM The bag may include seams / seals that move more noticeably than their block bottom, clamp bottom, and / or cross bottom counterparts. (Reference) Figure 2D and Figure 2E The image shows Totani ＴＭ Package 1400. Package 1400 may be constructed in a generally cubic shape. Package 1400 may include a first piece 1411, opposing second pieces 1412 and third pieces 1413, opposing fourth pieces 1414 and fifth pieces 1415, and a sixth piece 1410 opposite the first piece 1411. As shown, a first seal 1420 extends outward between the fourth piece 1414 and the sixth piece 1410. The first seal 1420 forms a base of package 1400. A second seal is capable of extending outward between the fifth piece 1415 and the sixth piece 1410 in a similar manner to the first seal 1420. It is worth noting that in some forms, the first piece 1411 may lie flat like the sixth piece 1410.

[0144] The first seal 1420 may extend such that a portion of the first seal 1420 is disposed on the second piece 1412, while another portion of the first seal 1420 is disposed on the third piece 1413. Similarly, a portion of the second seal may be disposed on the second piece 1412, while another portion may be disposed on the third piece 1413. The first seal 1420 and the second seal may be provided, wherein the sixth piece 1410 is formed of discrete sheets of material subsequently joined to the fourth piece 1414 and the fifth piece 1415. Of course, it is also conceivable that the sixth piece 1410 is integral with the fourth piece 1414 and the fifth piece 1415.

[0145] The third seal 1430 and the fourth seal 1440 may extend outward from the second piece 1412 and the third piece 1413, respectively. It is noteworthy that the first seal 1420, the second seal, the third seal 1430, and the fourth seal 1440 may collectively comprise the hoop seal discussed earlier. Therefore, one, all, or any combination of these seals may exhibit the tensile strength of the hoop seal as described herein.

[0146] As shown in the figure, package 1400 may further include a fifth seam 1450 and a sixth seam 1460 disposed on a sixth piece 1411. The fifth seam 1450 and the sixth seam 1460 may extend into the sealing fin 1480. It is worth noting that package 1400 and the associated seams may be assembled as described herein with respect to adhesives, films and / or combinations of films and adhesives. However, the construction of package 1400 is particularly suitable for forming seams by a film coating on the inner surface of the packaging material. In such a configuration, the film may form a barrier that reduces the likelihood of moisture passing through the packaging material to reach the absorbent articles therein, or at least reduces the amount of moisture that passes through the packaging material to reach the absorbent articles therein. Packages of this disclosure may include multiple compressed articles, such as compressed disposable absorbent articles. For example, packages of this disclosure may be used to accommodate feminine sanitary pads. As shown in Figure 5, package 1 defines an internal space 1002 containing multiple absorbent articles 1004. The multiple absorbent articles 1004 may be arranged in one or more stacks 1006. Absorbent articles can be stacked under compression to reduce package size while still providing a sufficient amount of absorbent article per package. By encapsulating absorbent articles under compression, caregivers can easily handle and store the packages, while also providing manufacturers with distribution savings due to the package size. Despite lacking the tensile properties of conventional plastic packaging materials, the inventors have surprisingly found that the packaging material of this disclosure can withstand harsh processing and distribution conditions, as previously mentioned, even with absorbent articles compressed within the package. This is particularly unexpected because the material of this invention does not exhibit the tensile properties of currently used conventional plastic films.

[0147] Therefore, based on the bag stacking height test described herein, the packaging of the absorbent articles of this disclosure may have a bag stacking height of less than about 150 mm, less than about 110 mm, less than about 105 mm, less than about 100 mm, less than about 95 mm, less than about 90 mm, less than about 85 mm, less than about 80 mm, less than about 78 mm, less than about 76 mm, less than about 74 mm, less than about 72 mm, or less than about 70 mm, specifically listing all 0.1 mm increments within the specified range and in all ranges formed therein or by it. Alternatively, according to the bag stacking height test described herein, the packaging of the absorbent article of this disclosure may have an bag stacking height of about 70 mm to about 150 mm, about 70 mm to about 110 mm, about 70 mm to about 105 mm, about 70 mm to about 100 mm, about 70 mm to about 95 mm, about 70 mm to about 90 mm, about 70 mm to about 85 mm, about 72 mm to about 80 mm, or about 74 mm to about 78 mm, specifically listing all 0.1 mm increments within the specified range and in all ranges formed therein or by it.

[0148] It is worth noting that the absorbent articles within the packaging of this disclosure can be arranged in various configurations. For example, the absorbent articles of this disclosure can be disposed within the packaging such that they are oriented vertically, or the absorbent articles can be arranged such that they are arranged in a horizontal configuration, as shown in Figure 5, for example. Combinations of horizontally and vertically oriented articles are envisioned in the packaging.

[0149] Additionally, the articles within the package can be oriented such that one longitudinal peripheral edge of each of the multiple articles is closer to the consumer-facing sheet than another longitudinal peripheral edge. For example, when the number of absorbent articles within the package is relatively high, such as more than nine, the absorbent articles can be arranged within the package as described above. However, when the number of absorbent articles within the package is less than, for example, nine, the absorbent articles can be arranged such that the top or bottom sheet of the absorbent article is closer to the consumer-facing sheet. Additional absorbent articles can be stacked behind the absorbent article closest to the consumer-facing sheet. Combinations of orientations within the package are envisioned. For example, at least one absorbent article can be arranged such that one of its longitudinal peripheral sides is closer to the consumer-facing sheet than another, and at least one absorbent article can be arranged such that its top or bottom sheet is closer to the consumer-facing sheet. The remainder of the absorbent articles (if any) can present any of these configurations.

[0150] Regardless of the sealing configuration—block, cross, or clamp—these configurations are known in the art. It is worth noting that for smaller items requiring upright packaging, a block bottom or cross bottom may be necessary. However, for larger items, a clamp-down configuration may be advantageous because the large volume of absorbent article within the package forms a stable base that allows the package to stand upright. Additionally, it is noteworthy that block and cross configuration packages tend to be larger than their clamp-down counterparts. For packaging purposes, unfilled packages can be delivered to the absorbent article manufacturer in stacked form. Typically, due to their large volume, stacks of block and cross configuration packages will occupy more space than their clamp-down counterparts. The large volume of block and cross configurations makes stacking more difficult to manipulate during filling, especially when a large number of packages are produced per minute. In such instances, the large volume of these configurations may mean an increased frequency of repackaging. Therefore, for packages (unfilled) that include the same packaging material but different sealing styles (i.e., block and clamp), the block configuration will take up more space than their clamp counterparts.

[0151] See again Figures 1C to 2E The size of bags and packages can be appropriately selected and achieved through design, folding, stacking, compression and packaging processes, so that the package 1 retains the absorbent product inside and maintains the package's simple, stable, and essentially parallelepiped shape, i.e., cubic shape.

[0152] The first surface 10 may include the top sheet of the package 1. Alternatively, the first surface 10 may include the bottom sheet of the package 1. It is worth noting that if the first surface 10 includes a seal, it may be desirable for the first surface 10 to include the bottom sheet. In this way, the seal can be hidden and not seen on the shelf. Similarly, when the second surface 12 and the third surface 13 may include gusseted tabs 12b and 13b and / or creases, respectively, they may include the left sheet and the right sheet, respectively, and vice versa. This allows one of the fourth surface 14 and the fifth surface 15 to include the consumer-facing sheet. Therefore, at least one of the fourth surface 14 and / or the fifth surface 15 may include the brand logo, packaging information, and / or background color described herein. However, as previously stated, the brand logo, packaging information, and / or background color are not limited to the consumer-facing sheet. Any combination of sheets of the packages disclosed herein may include the brand logo, packaging information, and / or background color.

[0153] Reference Figure 3AThe inner surface 399 of the package of this disclosure is shown. As previously described, the adhesive provided for the seal can be provided in a pattern or as a full coating. As shown, each of the plurality of seals may include a sealing region 380, and at least one of the plurality of seals includes an adhesive region 390. The sealing region 380 has a longitudinal centerline 381, and the adhesive region 390 has a longitudinal centerline 390. As shown, the adhesive region 390 includes upper and lower portions located on the sides of the sealing region 380. Adhesive 392 is shown applied in stripes in the adhesive region 390, which are generally perpendicular to the longitudinal centerline 391 of the adhesive region 390 or the longitudinal centerline 381 of the sealing region 380. Before the seal is formed, the adhesive strips 392 are constructed in the sealing region 380 in a similar manner to those in the adhesive region 390. However, after the seal is formed, the adhesive strips are compressed to a certain extent, as shown via the strip pattern 382 in the sealing region.

[0154] like Figure 3B As shown, the adhesive region 390 and the sealing region 380 can be disposed on the inner surface of the package 1, completely surrounding the periphery from which the seal (e.g., an inlet seal) will be formed. Full coverage (i.e., 360 degrees) is not required, but it can be provided as shown. Note that gaps in the adhesive can be provided adjacent to sides 12 and 13 to ensure that there is no excess adhesive in the formed seal when compressed. Such gaps in the adhesive reduce the possibility of adhesive spilling from the package and / or contaminating the packaging equipment.

[0155] Reference Figure 3C During the formation of the seal, a sealing region is formed between the fourth surface 14 and the fifth surface 15, and gusset plates can be formed in the second surface 12 and the third surface 13. See also Figure 1D The gusset plates 11b and 11c. An adhesive applied to the inner surface of the package 1 will be sufficient to seal one or more absorbent articles therein. However, if desired, additional adhesive may be applied to the outer surfaces of the gusset plates 11b and 11c adjacent to the second surface 12 and the third surface 13. The adhesive on the outer surfaces allows the gusset plate fins 11b' and 11b'” and 11c' and 11c'” to join together. This configuration allows for a more aesthetically pleasing appearance of the package disclosed herein. However, the adhesive on the outer surfaces that join the gusset plate fins together is optional.

[0156] The inventors have remarkably discovered that applying an adhesive pattern and a colorant and / or coating to the sealing region 380 can advantageously affect the tensile strength of the seal. Data on this are available in... Figures 4A to 4C Provided by China. Figure 4AA graph showing the tensile strength of a seal, highlighting the pattern of adhesive applied to the sealing area. Figure 4B A graph highlighting the tensile strength of a seal based on the addition of a colorant to the sealing area is shown. Figure 4C A graph is shown highlighting the tensile strength based on the application of a coating (e.g., varnish) to the sealing area.

[0157] As previously mentioned, when packaging in accordance with this disclosure, a mobile parcel packaging configuration may also be utilized. Figure 5A and Figure 5B The image shows some examples of mobile parcel packaging. Figure 5A An exemplary flow package comprising a generally cubic shape is shown. Cubic packages have been previously discussed. As shown, package 301 includes a first sheet 310, a second sheet 312 and a third sheet 313 respectively opposite each other; a fourth sheet 314 and a fifth sheet 315 respectively opposite each other, and a sixth sheet 311 opposite the first sheet 310. As shown, the second sheet 312 may include an end seal 312a, and the third sheet 313 may include an end seam 313a. A clamp seal 316 may be partially disposed on the second sheet 312, the third sheet 313, and the sixth sheet 311. In this configuration, either the first sheet 310 or the fifth sheet 315 may include a consumer-facing sheet.

[0158] Figure 5B Another exemplary package 321 according to this disclosure is shown. It is very similar to... Figure 5A Package 301 and package 321 are flow wrap configurations. As shown, package 321 includes a first surface 324 and an opposing second surface 328. Rounded edges may be provided as a transition between the first surface 324 and the second surface 328. Alternatively, one or more fold lines may be provided between the first surface 324 and the second surface 328. Package 321 may also include end seals 322 and 323, and a clamp seal 326 that may be provided on the second surface 328. In such packages, the first surface 324 may include a consumer-facing sheet.

[0159] about Figure 5A and Figure 5B Both, while the packages shown, namely 301 and 321, include butt seals for end sealing, may also use overlapping seals. For example, one or more of the end seals 312a, 313a, 322, and 323 may include overlapping seals. Similarly, hoop seals, namely 316 and 326, may include either butt seals or overlapping seals.

[0160] The packaging may include multiple compressed articles, such as compressed disposable absorbent articles. For example, the packaging 1 of this disclosure can be used to contain feminine sanitary pads. Figure 6A As shown, package 1 defines an internal space 1002 containing a plurality of absorbent articles 1004. The plurality of absorbent articles 1004 can be arranged in one or more stacks 1006. The absorbent articles can be stacked under compression to reduce the size of the package while still providing a sufficient amount of absorbent articles for each package. By encapsulating the absorbent articles under compression, caregivers can easily handle and store the packages, while also providing manufacturers with distribution savings due to the size of the packages. Despite lacking the tensile properties of conventional plastic packaging materials, the inventors have surprisingly found that the packaging material of this disclosure can withstand harsh processing and distribution conditions, as previously described, even with absorbent articles compressed within the package. This is particularly unexpected because the material of this invention does not exhibit the tensile properties of currently used conventional plastic films.

[0161] Therefore, based on the bag stacking height test described herein, the packaging of the absorbent articles of this disclosure may have a bag stacking height of less than about 150 mm, less than about 110 mm, less than about 105 mm, less than about 100 mm, less than about 95 mm, less than about 90 mm, less than about 85 mm, less than about 80 mm, less than about 78 mm, less than about 76 mm, less than about 74 mm, less than about 72 mm, or less than about 70 mm, specifically listing all 0.1 mm increments within the specified range and in all ranges formed therein or by it. Alternatively, according to the bag stacking height test described herein, the packaging of the absorbent article of this disclosure may have an bag stacking height of about 70 mm to about 150 mm, about 70 mm to about 110 mm, about 70 mm to about 105 mm, about 70 mm to about 100 mm, about 70 mm to about 95 mm, about 70 mm to about 90 mm, about 70 mm to about 85 mm, about 72 mm to about 80 mm, or about 74 mm to about 78 mm, specifically listing all 0.1 mm increments within the specified range and in all ranges formed therein or by it.

[0162] It is worth noting that the absorbent articles within the packaging of this disclosure can be arranged in various configurations. For example, the absorbent articles of this disclosure can be disposed within the packaging such that they are oriented vertically, or the absorbent articles can be arranged such that they are arranged in a horizontal configuration, for example as... Figure 6A As shown, a combination of horizontally and vertically oriented articles is envisioned in the packaging.

[0163] Additionally, the articles within the package can be oriented such that one longitudinal peripheral edge of each of the multiple articles is closer to the consumer-facing sheet than another longitudinal peripheral edge. For example, when the number of absorbent articles within the package is relatively high, such as more than nine, the absorbent articles can be arranged within the package as described above. However, when the number of absorbent articles within the package is less than, for example, nine, the absorbent articles can be arranged such that the top or bottom sheet of the absorbent article is closer to the consumer-facing sheet. Additional absorbent articles can be stacked behind the absorbent article closest to the consumer-facing sheet. Combinations of orientations within the package are envisioned. For example, at least one absorbent article can be arranged such that one of its longitudinal peripheral sides is closer to the consumer-facing sheet than another, and at least one absorbent article can be arranged such that its top or bottom sheet is closer to the consumer-facing sheet. The remainder of the absorbent articles (if any) can present any of these configurations.

[0164] Now for reference Figures 6A to 6D One or more absorbent articles can be folded and arranged in the packaging disclosed herein. For example, as Figure 6B As shown, absorbent materials can be bi-folded. For example, as... Figure 6C As shown, one or more absorbent articles in the packaging of this disclosure may be tri-folded. As yet another example, such as... Figure 6D As shown, one or more absorbent articles disposed within the packaging of this disclosure may be tri-folded, but not as shown. Figure 6B The fold shown is approximately one-third folded, and the article can be double-folded, with approximately equal lengths on both sides of the fold. The side ends 697 can then be folded as shown. Such folds can be used with any suitable absorbent article. In a specific example, this folding scheme can be used for diapers, such as double-folded with waist pleats.

[0165] Absorbent products

[0166] As previously mentioned, there are many absorbent articles that can be packaged in the packaging materials disclosed herein. Figures 7 to 8C Two specific examples are provided. However, the packaging materials and packages disclosed herein can be used to contain multiple absorbent articles as previously described. Figures 7 to 8C This is merely an example of articles that can be contained in the packaging materials / packages disclosed herein.

[0167] exist Figure 7An exemplary feminine sanitary pad 400 is shown in the image. The feminine sanitary pad 400 includes a top sheet 420, a bottom sheet 450, and an absorbent core 440 disposed between the top sheet 420 and the bottom sheet 450. A fluid management layer 430 may be disposed between the top sheet 420 and the absorbent core 440. The absorbent article has a wearer-facing surface 460 and a clothing-facing surface 462. The wearer-facing surface 460 primarily includes the top sheet 420, while the clothing-facing surface 462 primarily includes the bottom sheet 450. Additional components may be included in the wearer-facing surface 460 and / or the clothing-facing surface 462. For example, if the absorbent article is an incontinence pad, a pair of barrier bands extending generally parallel to the longitudinal axis L of the absorbent article 400 may also form part of the wearer-facing surface 460. Similarly, a fastening adhesive may be present on the bottom sheet 450 and form part of the clothing-facing surface 462 of the absorbent article.

[0168] The top sheet 420 can be bonded to the bottom sheet 450 by attachment methods (not shown) known in the art. The top sheet 420 and the bottom sheet 450 can be directly bonded to each other in the periphery of the article, and can also be indirectly bonded together by directly bonding them to the absorbent core 440, the fluid management layer 430 and / or an additional layer disposed between the top sheet 420 and the bottom sheet 450. Such indirect or direct bonding can be achieved by attachment methods well known in the art.

[0169] Topsheet 420 can be soft, comfortable, and non-irritating to the wearer's skin. Suitable topsheet materials include liquid-permeable materials that are oriented towards and in contact with the wearer's body, allowing bodily excretions to pass through quickly without allowing fluid to flow back onto the wearer's skin. While the topsheet allows fluid to pass through and be quickly transferred, it can also allow the lotion composition to transfer or migrate to the outside or inside of the wearer's skin.

[0170] The suitable top sheet 420 can be made of a variety of materials, such as woven and nonwoven materials; open-cell membrane materials, including open-cell thermoplastic membranes, open-cell plastic membranes and fiber-wound open-cell membranes; hydroformed thermoplastic membranes; porous foams; mesh foams; mesh thermoplastic membranes; thermoplastic sparse fabrics; or combinations thereof.

[0171] Suitable open-pore membrane materials for use as top sheets include those porous plastic membranes that do not absorb bodily fluids and allow bodily fluids to pass through, while ensuring that fluids passing through the top sheet flow back to a minimum or not at all. Other suitable shaped films (including open-cell and non-porous shaped films) are described more fully in the following documents: U.S. Patent 3,929,135 to Thompson, December 30, 1975; U.S. Patent 4,324,246 to Mullane et al., April 13, 1982; U.S. Patent 4,342,314 to Radel et al., August 3, 1982; U.S. Patent 4,463,045 to Ahr et al., July 31, 1984; U.S. Patent 5,006,394 to Baird, April 9, 1991; U.S. Patent 4,609,518 to Curro et al., September 2, 1986; and U.S. Patent 4,629,643 to Curro et al., December 16, 1986.

[0172] Non-limiting examples of woven and nonwoven materials suitable for use as topsheets include fibrous materials made from natural fibers (e.g., cotton, including 100% organic cotton), modified natural fibers, synthetic fibers, or combinations thereof. These fibrous materials may be hydrophilic or hydrophobic, but preferably, the topsheet is hydrophobic or exhibits a hydrophobic appearance. Alternatively, portions of the topsheet may be treated to be hydrophilic using any known method for preparing a topsheet containing hydrophilic components. The nonwoven fiber topsheet 20 may be produced by any known method for manufacturing nonwoven fiber webs, non-limiting examples of which include spunbond, carding, wet web forming, air-laid web forming, meltblown, needle punching, mechanical winding, thermo-mechanical winding, and water winding.

[0173] The top sheet 420 may be formed from a combination of an open-cell film and a nonwoven material. For example, a membrane fiber web and a nonwoven fiber web may be combined as described in U.S. Patent 9,700,463. Alternatively, the film may be extruded onto a nonwoven material, which is believed to provide enhanced contact between the film layer and the nonwoven material. Exemplary processes for such combinations are described in U.S. Patents 9,849,602 and 9,700,463.

[0174] The backing sheet 450 may be positioned adjacent to the garment-facing surface of the absorbent core 440 and may be attached thereto by an attachment method such as those well known in the art. For example, the backing sheet 450 may be attached to the absorbent core 440 by a uniform, continuous adhesive layer, a patterned adhesive layer, or a series of separate adhesive lines, spirals, or spots. Alternatively, the attachment method may include the use of thermal bonding, pressure bonding, ultrasonic bonding, dynamic mechanical bonding, or any other suitable attachment method or combination thereof as known in the art.

[0175] The backing sheet 450 may be impermeable or substantially impermeable to liquids (e.g., urine) and may be made of a thin plastic film, but other flexible materials impermeable to liquids may also be used. As used herein, the term "flexible" refers to a material that is compliant and readily conforms to the general shape and contours of the human body. The backing sheet prevents or at least inhibits the wetting of clothing articles, such as underwear, in contact with the incontinence pad by effluent absorbed and contained by the absorbent core. However, the backing sheet may allow vapor to escape from the absorbent core (i.e., breathable), while in some cases, the backing sheet may not allow vapor to escape (i.e., non-breathable). Therefore, the backing sheet may comprise a polymer film, such as a thermoplastic polyethylene film or a polypropylene film. Suitable materials for the backing sheet are thermoplastic films having a thickness of, for example, from about 0.012 mm (0.5 mils) to about 0.051 mm (2.0 mils). Any suitable backing sheet known in the art may be used in this invention.

[0176] The backing sheet 450 acts as a barrier against any absorbed bodily fluids that can pass through the absorbent core 440 to the surface of the garment, thereby reducing the risk of soiling underwear or other clothing. The preferred material is a soft, smooth, and flexible liquid and vapor permeable material that provides comfortable softness and conformability, and produces low noise so as not to cause annoying noise during movement.

[0177] Exemplary films are described in U.S. Patent 5,885,265 (Osborn, III.) published March 23, 1999; 6,462,251 (Cimini) published October 8, 2002; 6,623,464 (Bewick-Sonntag) published September 23, 2003; or U.S. Patent 6,664,439 (Arndt) published December 16, 2003. Double or multilayer breathable films applicable herein include those exemplified in U.S. Patents 3,881,489, 4,341,216, 4,713,068, 4,818,600, EP 203,821, EP 710,471, EP 710,472, and EP 793,952.

[0178] The breathable backing sheets applicable herein include all breathable backing sheets known in the art. There are two main types of breathable backing sheets: single-layer breathable backing sheets that are breathable and liquid-impermeable, and backing sheets having at least two layers that combine breathability and liquid impermeability. Single-layer breathable backing sheets applicable herein include those described, for example, in GB A 2184389, GB A 2184390, GB A 2184391, U.S. Patent Nos. 4,591,523, 3,989,867, 3,156,242, and WO 97 / 24097.

[0179] The substrate is a nonwoven fiber web with a basis weight between about 20 gsm and about 50 gsm. For example, the substrate can be a spunbond nonwoven fiber web of relatively hydrophobic 4 denier polypropylene fibers at 23 gsm, available from Fiberweb Neuberger under the trade name F102301001. The substrate may be coated with an insoluble, liquid-swellable material as described in U.S. Patent 6,436,508 (Ciammaichella), published August 20, 2002.

[0180] The film has a clothing-facing side and a body-facing side. The clothing-facing side of the film includes a non-adhesive area and an adhesive area. The adhesive area can be provided by any conventional method. Pressure-sensitive adhesives are generally found to be very suitable for this application.

[0181] The absorbent core 440 may include any suitable shape, including but not limited to elliptical, circular, rectangular, asymmetrical, and hourglass shapes. For example, in some forms of the invention, the absorbent core 440 may have a contoured shape, such as being narrower in the middle region than at the ends. Alternatively, the absorbent core may have a tapered shape, with a wider portion at one end of the pad and gradually tapering to a narrower end at the other end. The absorbent core may have varying stiffness on the MD and CD.

[0182] The configuration and construction of the absorbent core can be varied (e.g., absorbent core 40 may have varying thickness zones, hydrophilic gradients, superabsorbency gradients, or lower average density and lower average basis weight collection zones). Additionally, the size and absorbency capacity of absorbent core 440 can also be varied to accommodate a variety of wearers. However, the total absorbency capacity of absorbent core 440 should conform to the design load and intended use of disposable absorbent articles or incontinence pads.

[0183] In some forms of the invention, the absorbent core may include multiple multifunctional layers in addition to the first and second laminates. For example, the absorbent core may include a core wrapper (not shown) for encapsulating the first and second laminates, as well as other optional layers. The core wrapper may be formed from two nonwoven materials, a substrate, a laminate, a film, or other materials. In one form, the core wrapper may consist of only a single material, substrate, laminate, or other material that at least partially surrounds itself. The absorbent core may include one or more adhesives, for example, to facilitate securing SAP or other absorbent materials within the first and second laminates.

[0184] Absorber cores with various core designs and containing relatively high SAP contents are disclosed in U.S. Patent 5,599,335 to Goldman et al., EP 1,447,066 to Busam et al., WO 95 / 11652 to Tanzer et al., U.S. Patent Publication 2008 / 0312622A1 to Hundorf et al., and WO 2012 / 052172 to Van Malderen. These can be used to construct superabsorber layers.

[0185] The addition of the core disclosed herein is envisioned. Specifically, potential additions to the present multilayer absorber core are described in U.S. Patent 4,610,678, entitled "High-Density Absorbent Structures," issued to Weisman et al. on September 9, 1986; U.S. Patent 4,673,402, entitled "Absorbent Articles With Dual-Layered Cores," issued to Weisman et al. on June 16, 1987; U.S. Patent 4,888,231, entitled "Absorbent Core Having A Dusting Layer," issued to Angstadt on December 19, 1989; and U.S. Patent 4,834,735, entitled "High Density Absorbent Members Having Lower Density and Lower Basis Weight Acquisition Zones," issued to Alemany et al. on May 30, 1989. The absorbent core may also include additional layers that mimic a dual-core system, comprising a collection / dispensing core of chemically rigid fibers positioned above the absorbent storage core, as detailed in U.S. Patent 5,234,423, entitled "Absorbent Article With Elastic Waist Feature and Enhanced Absorbency," and U.S. Patent 5,147,345, issued August 10, 1993, to Alemany et al. These are useful as long as they do not counteract or conflict with the function of the laminated absorbent core of the present invention. Additional examples of suitable absorbent cores are described in U.S. Patent Application Publications 2018 / 0098893 and 2018 / 0098891.

[0186] Any suitable fluid management layer can be used in conjunction with the feminine sanitary pad 400. The fluid management layer can be separable and independent from the absorbent system. Additionally, the fluid management layer is positioned below the top sheet and on the wearer-facing surface of the core. The fluid management layer can have a basis weight of approximately 40 gsm to approximately 100 gsm, approximately 45 gsm to approximately 75 gsm, or approximately 50 gsm to approximately 65 gsm, specifically including these ranges and all values ​​within any range arising therefrom. In some forms, the fluid management layer may comprise a homogeneous blend of fibers, while in other forms, the fluid management layer may comprise a non-homogeneous blend of fibers.

[0187] Some exemplary fluid management layers are described in U.S. Patent Application Publications 2015 / 0351976A1 and 2014 / 0343523A1; and U.S. Patent Application Serial 15 / 729704.

[0188] Another example of an absorbent article that may be included in the packaging of this disclosure is a diaper. Figure 8A The diagram shown is a plan view of an exemplary absorbent article, namely a diaper 1900 in its flat, non-shrinked state (i.e., without the shrinkage caused by elasticity), wherein a portion of the structure is cut off to more clearly show the construction of the diaper 1900 and its wearer-facing surface is toward the observer. This diaper is shown for illustrative purposes only, as the packaging of this disclosure can be used for a wide variety of diapers or other absorbent articles.

[0189] The absorbent article may include a liquid-permeable top sheet 1924, a liquid-impermeable bottom sheet 1925, an absorbent core 1928 at least partially positioned between the top sheet 1924 and the bottom sheet 1925, and a barrier leg 1934. The absorbent article may also include a liquid management system (“LMS”) 1950. Figure 8B As shown, the fluid management system in the illustrated example includes a dispensing layer 1954 and a collection layer 1952, both of which will be discussed further below. In various forms, the collection layer 1952 may alternatively dispense body exudate and the dispensing layer 1954 may alternatively collect body exudate, or both layers may dispense and / or collect body exudate. The LMS 1950 may also be provided as a single layer or as two or more layers. The absorbent article may also include an elasticated liner hoop 1932, which is typically attached to the base structure of the absorbent article via a top sheet and / or a bottom sheet and is substantially planar with the base structure of the diaper.

[0190] These figures also illustrate typical adhesive diaper components, such as a fastening system comprising an adhesive insert 1942 or other mechanical fastener that attaches toward the rear edge of the absorbent article 1920 and engages with a landing area 1944 on the front of the absorbent article 1920. The absorbent article may also include other typical elements not shown, such as, for example, a rear elastic waistband feature and a front elastic waistband feature.

[0191] The absorbent article 1920 may include a front waist edge 1910, a rear waist edge 1912 longitudinally opposite to the front waist edge 1910, a first side edge 1903, and a second side edge 1904 laterally opposite to the first side edge 1903. The front waist edge 1910 is the edge of the absorbent article 1920 intended to be positioned facing the front of the user when worn, and the rear waist edge 1912 is the opposite edge. When the absorbent article 1920 is worn by the wearer, the front waist edge 1910 and the rear waist edge together form a waist opening. The absorbent article 1920 may have a longitudinal axis 1980 extending from the lateral midpoint of the front waist edge 1910 to the lateral midpoint of the rear waist edge 1912 of the absorbent article 1920 and dividing the absorbent article 1920 into two substantially symmetrical halves with respect to the longitudinal axis 1980, wherein the article is laid flat and as Figure 8A The image is shown as viewed from the surface facing the wearer. The absorbent article may also have a lateral axis 1990 extending from the longitudinal midpoint of the first side 1903 to the longitudinal midpoint of the second side 1904. The length L of the absorbent article 1920 may be measured along the longitudinal axis 1980 from the front waist edge 1910 to the back waist edge 1912. The crotch width of the absorbent article 1920 may be measured along the lateral axis 1990 from the first side 1903 to the second side 1904. The absorbent article 1920 may include a front waist area 1905, a back waist area 1906, and a crotch area 1907. The front waist area, back waist area, and crotch area each define one-third of the longitudinal length of the absorbent article. The front and back portions may also be defined on opposite sides of the lateral axis 1990.

[0192] Top sheet 1924, bottom sheet 1925, absorbent core 1928, and other article components can be assembled in various configurations, specifically by, for example, adhesive bonding or thermoforming. Exemplary diaper configurations are generally described in U.S. Patents 3,860,003, 5,221,274, 5,554,145, 5,569,234, 5,580,411, and 6,004,306.

[0193] The absorbent core 1928 may comprise absorbent material and a core envelope encapsulating the absorbent material, the absorbent material comprising 75% to 100%, at least 80%, at least 85%, at least 90%, at least 95%, or at least 99% by weight of the absorbent material, specifically listing all 0.1% increments within the foregoing specified ranges and all ranges therein or formed therefrom. The core envelope may typically comprise two materials, a substrate, or nonwoven materials 16 and 16' for the top and bottom sides of the core.

[0194] The absorber core 1928 may include one or more channels, in Figure 8A This is represented as four channels: 1926, 1926', and 1927, 1927'. Alternatively, the LMS 1950 may include one or more channels. Figures 8A to 8C These are referred to as channels 1949 and 1949'. In some forms, the channels of LMS 1950 may be positioned within the absorbent article 1920 such that they are aligned, substantially aligned, overlap, or at least partially overlap with the channels of the absorbent core 1928. These and other components of the absorbent article will now be discussed in more detail.

[0195] Top sheet 1924 is the portion of the absorbent article that comes into direct contact with the wearer's skin. As is known to those skilled in the art, top sheet 1924 may be bonded to bottom sheet 1925, core 1928, and / or any other layer. Typically, top sheet 1924 and bottom sheet 1925 are directly bonded to each other at some locations (e.g., at or near the periphery of the article) and indirectly bonded together at other locations by directly bonding them to one or more other elements of the absorbent article 1920.

[0196] The backing sheet 1925 is typically a portion of the absorbent article 1920 positioned adjacent to the absorbent core 1928 on the garment-facing surface and prevents or at least inhibits the soiling of articles such as sheets and underwear by the absorbed and contained bodily exudates. The backing sheet 1925 is typically impermeable to liquids (e.g., urine, diluted diapers), or at least substantially impermeable, but permeable to vapors to allow the diaper to “breathe.” The backing sheet may be, for example, or comprise a thin plastic film, such as a thermoplastic film having a thickness of about 0.012 mm to about 0.051 mm. Exemplary backing sheet films include those manufactured by Tredegar Corporation, headquartered in Richmond, VA, and sold under the trade name CPC2 film. Other suitable backing sheet materials may include breathable materials that allow vapors to escape from the absorbent article 1920 while still preventing or at least inhibiting bodily exudates from passing through the backing sheet 1925. Exemplary breathable materials may include materials such as woven fiber webs, nonwoven fiber webs, and composite materials (such as membrane-coated nonwoven fiber webs), microporous membranes, and monomeric membranes.

[0197] The substrate 1925 can be bonded to the top sheet 1924, absorbent core 1928, and / or any other element of the absorbent article 1920 by any attachment method known to those skilled in the art. Suitable attachment methods have been described above for methods of bonding the top sheet 1924 to other elements of the absorbent article 1920.

[0198] As used herein, the term "absorbent core" refers to a single component of an absorbent article having the maximum absorbent capacity and containing absorbent material. An absorbent core may include a core wrapper or core bag encapsulating absorbent material (hereinafter, "core wrapper"). The term "absorbent core" does not include LMS or any other component of the absorbent article that is neither integral to the core wrapper nor contained within the core wrapper. An absorbent core may include, consist substantially of, or be composed of the following: the core wrapper, the absorbent material as defined below, and adhesive encapsulated within the core wrapper. Pulp or breathable felt may also be present within the core wrapper and may form part of the absorbent material. The periphery of the absorbent core (which may be the periphery of the core wrapper) may define any suitable shape, such as, for example, a "T," "Y," "hourglass," or "dog bone" shape. An absorbent core periphery having a generally "dog bone" or "hourglass" shape may taper along its width toward the center or "groin" area of ​​the core. In this way, the absorbent core may have a relatively narrow width in the absorbent core area intended to be placed in the groin area of ​​the absorbent article.

[0199] The absorbent core 1928 of this disclosure may comprise absorbent material having a high amount of superabsorbent polymer (abbreviated herein as "SAP") encapsulated within a core envelope. SAP content may be expressed as 70% to 100% or at least 70%, 75%, 80%, 85%, 90%, 95%, 99%, or 100% by weight of the absorbent material contained in the core envelope. The SAP used in this disclosure may comprise a variety of water-insoluble but water-swellable polymers capable of absorbing large volumes of fluid. For the purpose of assessing the percentage of SAP in the absorbent core, the core envelope is not considered absorbent material. The remainder of the absorbent material in the core 1928 may be a breathable felt.

[0200] "Absorbent material" refers to materials that possess some absorption or liquid retention properties, such as SAP, cellulose fibers, and synthetic fibers. Typically, the adhesive used to prepare the absorbent core does not possess absorption properties and is not considered an absorbent material. As mentioned above, the SAP content can be greater than 80% by weight of the absorbent material contained within the core enclosure, for example, at least 85%, at least 90%, at least 95%, at least 99%, and even up to and including 100%. This provides a relatively thin core compared to conventional cores that typically contain, for example, between 40% and 60% SAP and high contents of cellulose fibers or breathable felt. The absorbent material can contain less than 15% or less than 10% by weight of natural or synthetic fibers, less than 5% by weight, less than 3% by weight, less than 2% by weight, less than 1% by weight, or may even be substantially free of or contain no natural and / or synthetic fibers, specifically listed within the specified ranges and all 0.1% increments within or formed of these ranges. The absorbent material may contain little or no breathable felt (cellulose) fibers. Specifically, the absorbent core may contain less than 15%, 10%, 5%, 3%, 2%, or 1% breathable felt (cellulose) fibers by weight, or may even contain virtually no or no cellulose fibers, specifically listed in the specified range and all 0.1% increments in or in all ranges formed therefrom.

[0201] The absorbent core 1928 may also include a generally planar top side and a generally planar bottom side. The core 1928 may have a longitudinal axis 80' that substantially corresponds to the longitudinal axis 80 of the absorbent article, as in... Figure 5A As shown in the plan view from the top. The absorbent material can be distributed towards the front in a greater amount than towards the rear, because greater absorbency may be required at the front of the article of manufacture. The absorbent material can have a non-uniform or uniform basis weight in any part of the core. The core wrapping can be formed of two nonwoven materials, a substrate, a laminate, or other materials 1916, 1916', which can at least partially seal along the sides of the absorbent core. The core wrapping can be at least partially sealed along its front, rear, and two longitudinal sides, such that substantially no absorbent material leaks out of the absorbent core wrapping. The first material, substrate, or nonwoven 1916 can at least partially surround the second material, substrate, or nonwoven 1916' to form the core wrapping. The first material 1916 can surround portions of the second material 1916' adjacent to the first and second side edges 1903 and 1904.

[0202] Chips with various core designs containing relatively high amounts of SAP are disclosed in U.S. Patent 5,599,335 (Goldman), EP 1,447,066 (Busam), WO 95 / 11652 (Tanzer), U.S. Patent Publication 2008 / 0312622A1 (Hundorf), and WO 2012 / 052172 (Van Malderen).

[0203] The absorbent material may be one or more continuous layers present within the core package. Alternatively, the absorbent material may consist of a bag or strip of separate absorbent material encapsulated within the core package. In the first case, the absorbent material may be obtained, for example, by applying a single continuous layer of absorbent material. Continuous layers of absorbent material (specifically, SAP) may also be obtained by combining two or more absorbent layers having a discontinuous absorbent material application pattern, wherein the resulting layers are substantially continuously distributed in regions of absorbent granular polymer material, as disclosed, for example, in U.S. Patent Application Publication 2008 / 0312622A1 (Hundorf). The absorbent core 1928 may include a first absorbent layer and a second absorbent layer. The first absorbent layer may include a first material 1916 and a first layer 1961 of absorbent material, which may be 100% or less SAP. The second absorbent layer may include a second material 1916' and a second layer 1962 of absorbent material, which may be 100% or less SAP.

[0204] The fiber-reinforced thermoplastic adhesive material 1951 can at least partially contact the absorbent materials 1961 and 1962 in the landing area and at least partially contact the materials 1916 and 1916' in the bonding area. This gives the fiber layer of the thermoplastic adhesive material 591 a substantially three-dimensional structure, which itself is a substantially two-dimensional structure with a relatively small thickness compared to its dimensions in the length and width directions. Thus, the fiber-reinforced thermoplastic adhesive material can provide a cavity to cover the absorbent material in the landing area, thereby fixing the absorbent material, which may be 100% or less SAP.

[0205] The core wrapper can be made of a single substrate, material, or nonwoven fabric folded around the absorbent material, or it can comprise two (or more) substrates, materials, or nonwoven fabrics attached to each other. Typical attachments are so-called C-wrappers and / or sandwich wrappers. In a C-wrapper, the longitudinal and / or transverse edges of one substrate are folded over another substrate to form winglets. These winglets are then typically bonded to the outer surface of the other substrate by adhesive. Other techniques can be used to form the core wrapper. For example, the longitudinal and / or transverse edges of the substrates can be bonded together, then folded under the absorbent core and bonded in that location.

[0206] The core wrapper can at least partially seal all sides of the absorbent core, such that substantially no absorbent material leaks out of the core. "Substantially no absorbent material" means that less than 5%, less than 2%, less than 1%, or about 0% of absorbent material by weight escapes from the core wrapper. The term "seal" should be interpreted broadly. A seal for a core wrapper does not need to be continuous along the entire perimeter of the core wrapper, but can be discontinuous along its entirety, such as being formed by a series of sealing points spaced apart along a line. The seal can be formed by adhesive bonding and / or thermal bonding.

[0207] The core encapsulation can also be formed from a single substrate that encapsulates the absorbent material in a package and seals it along the front and back sides of the core as well as a longitudinal seal.

[0208] The absorbent article may include a pair of blocking leg cuffs 1934. Each blocking leg cuff may be formed from a single sheet of material bonded to the absorbent article, thereby extending upward from the inner surface of the absorbent article and providing improved inhibition of fluids and other bodily exudates near the junction of the wearer's torso and legs. The blocking leg cuff 1934 is defined by a proximal edge 1964 directly or indirectly bonded to a top sheet 1924 and / or a bottom sheet 1925, and a free end edge 1966 intended to contact the wearer's skin and form a seal. The blocking leg cuff 1934 extends at least partially between the front waist edge 1910 and the rear waist edge 1912 of the absorbent article on opposite sides of the longitudinal axis 1980, and is present at least in the crotch area 1907. The blocking leg cuff 1934 may be bonded to the base structure of the absorbent article at the proximal edge 1964 by an adhesive portion 1965, which may be made by a combination of adhesive, fusion bonding, or other suitable bonding processes. The adhesive portion 1965 at the proximal edge 1964 may be continuous or discontinuous. The adhesive portion 1965 of the protruding segment closest to the leg clamp 1934 defines the proximal edge 1964 of the upright segment of the leg clamp 1934.

[0209] The barrier leg cuff 1934 may be integral with the top sheet 1924 or the bottom sheet 1925, or it may be a separate material attached to the base structure of the absorbent article. The material of the barrier leg cuff 1934 may extend through the entire length of the diaper, but may be "adhesively bonded" to the top sheet 1924 toward the front waist edge 1910 and back waist edge 1912 of the absorbent article, such that in these sections, the barrier leg cuff material remains flush with the top sheet 1924.

[0210] Each barrier leg cuff 1934 may include one, two, or more elastic strands or strips 1935 of a membrane adjacent to the free end edge 1966 to provide a better seal. It is worth noting that barrier leg cuffs can be similarly applied to a pad-type structure as shown with reference to FIG4. Such a configuration may be desirable in adult incontinence pads. Any configuration of barrier leg cuffs described herein can be used in adult incontinence pads.

[0211] In addition to the blocking leg cuff 1934, the absorbent article may also include a bushing cuff 1932, which engages with the base structure of the absorbent article (specifically the top piece 1924 and / or the bottom piece 1925) and may be positioned externally relative to the blocking leg cuff 1934. The bushing cuff 1932 provides a better seal around the wearer's thigh. Each bushing leg cuff will include one or more elastic bands or elastic elements in the base structure of the absorbent article between the top piece 1924 and the bottom piece 1925 in the leg opening area. All or part of the blocking leg cuff and / or bushing cuff may be treated with a lotion or skin care composition. The blocking leg cuffs can be constructed in many different configurations, including those described in U.S. Patent Application Publication 2012 / 0277713.

[0212] In one form, the absorbent article may include a front auricle 1946 and a rear auricle 1940. The auricles may be integral parts of the basic structure, such as being formed as side plates from a top plate 1924 and / or a bottom plate 1925. Alternatively, as... Figure 8A As shown, the ear flaps (1946, 1940) can be independent elements attached by adhesive bonding, thermoforming, and / or pressure bonding. The back ear flap 1940 can be stretchable to facilitate attachment of the tab 1942 to the landing area 1944 and to hold the adhesive diaper in proper position around the wearer's waist. The back ear flap 1940 can also be elastic or stretchable to provide a more comfortable and conformal fit to the wearer through an initial conformal fit of the absorbent article, and to maintain this fit throughout wear when the absorbent article is loaded with exudate, as the elastic ear flap allows the absorbent article to stretch and contract laterally.

[0213] One function of the LMS 1950 is to rapidly collect fluid and efficiently distribute it to the absorber core 1928. The LMS 1950 may include one or more layers, which may form an integral layer or remain as discrete layers that can be attached to each other. The LMS 1950 may include two layers: a distribution layer 1954 and a collection layer 1952, which are disposed between the absorber core and the top sheet, but this disclosure is not limited to such a configuration.

[0214] LMS 1950 may contain SAP because this slows down the collection and dispensing of the fluid. In other forms, LMS may be substantially SAP-free (e.g., 80%, 85%, 90%, 95%, or 99% SAP-free) or completely SAP-free. For example, LMS may also contain one or more of a variety of other suitable types of materials, such as open-cell foams, air-laid fibers, or carded resin-bonded nonwoven materials. Suitable exemplary LMS are described, for example, in WO 2000 / 59430 (Daley), WO 95 / 10996 (Richards), U.S. Patent 5,700,254 (McDowall), and WO 02 / 067809 (Graef).

[0215] LMS 1950 may include a distribution layer 1954. Distribution layer 1954 may, for example, contain at least 50% by weight or more of cross-linked cellulose fibers. The cross-linked cellulose fibers may be pleated, twisted, or crimped, or a combination thereof (including pleated, twisted, and crimped). This type of material is disclosed in U.S. Patent Publication 2008 / 0312622A1 (Hundorf).

[0216] LMS 1950 may alternatively or additionally include a collection layer 1952. Collection layer 1952 may, for example, be disposed between distribution layer 1954 and top sheet 1924. Collection layer 1952 may be or may include a nonwoven material, such as SMS or SMMS material, comprising spunbond layers, meltblown layers, and other spunbond layers, or alternatively, chemically bonded nonwovens carded into a web. Collection layer 1952 may include air-laid or wet-laid cellulose, cross-linked cellulose, or synthetic fibers, or blends thereof. Collection layer 1952 may include a packaged fiber web of synthetic fibers (which may be processed, for example, by solid forming to increase porosity), or a combination of synthetic fibers and cellulose fibers bonded together to form a high-loft material. Alternatively, collection layer 1952 may include absorbent open-cell foam. The nonwoven material may be latex-bonded.

[0217] The LMS 1950 of the absorbent article 1920 may include channels that generally enable the absorbent article to better conform to the wearer's body structure, resulting in increased freedom of movement and reduced gaps. One or more of the channels in the LMS 1950 may be configured to work in conjunction with various channels in the absorbent core 1928, as discussed above. Additionally, the channels in the LMS 1950 may provide increased clearance to retain and distribute urine, BM, or other bodily exudates within the absorbent article, resulting in reduced leakage and skin contact. The channels in the LMS 1950 may also provide internally available markings (especially when highlighted by physical differences in texture, color, and / or pattern) to facilitate proper alignment of the absorbent article on the wearer. Thus, such physical differences may be, for example, visually and / or tactilely noticeable.

[0218] Packaging Array

[0219] The packaging materials of this disclosure are intended to provide a variety of packaging arrays to address the needs of a wide range of consumers. For example, the packaging of this disclosure can be used with absorbent articles having more natural components or having natural components. For example, the packaging of this disclosure can be used with absorbent articles comprising a cotton top sheet and / or a cotton fluid management layer or collection layer. Additionally or alternatively, the packaging of this disclosure can be used with absorbent articles that are unscented and / or have unbleached pulp in their absorbent core.

[0220] While some absorbent product supplies may utilize the packaging of this disclosure, others may utilize conventional packaging. However, in efforts to promote more sustainable manufacturing practices, it is anticipated that at least 20%, more preferably at least 40%, or most preferably at least 50% of absorbent products supplied by a single manufacturer of absorbent products on the shelf will have recyclable packaging as described herein, specifically listing all values ​​within these ranges or any ranges arising therefrom. For example, when a manufacturer of absorbent products has five absorbent product supplies on the shelf, such as two diaper sizes and three feminine pad sizes, at least one of the packages for a single diaper size or a single feminine pad size may include recyclable packaging as described herein.

[0221] In cases where the packaging material of this disclosure is used for two different absorbent articles and wherein the packages have different sealing configurations, arrays are envisioned. For example, a first package may include multiple sanitary pads and include at least one sheet having a block configuration. A second package may include multiple diapers and include at least one sheet having a clamping or cross configuration.

[0222] Test methods

[0223] ASTM F88-06—Tensive Strength

[0224] This test method determines the strength of a seal in a flexible barrier material by measuring the force required to separate a test strip containing the seal. Seal strength is measured according to pharmacopoeia method ASTM F0088-06 on a constant-rate tensile strength tester, and procedural details are shown herein. A suitable instrument model is the Instron 5965 (both purchased from Instron Norwood, MA) or equivalent using Bluehill Universal software. All measurements are performed in a laboratory maintained at 23°C ± 2°C and 50% ± 2% relative humidity, with test samples conditioned in this environment for 2 hours prior to testing.

[0225] The test specimen preparation and testing procedures are described in the referenced ASTM method, with the following details: Cut the test specimens to 1.0-inch widths, with a clamping rate of 300 mm / min, and without supporting tail-holding methods. Record the maximum force encountered when the test specimen fails under stress as force per unit width, accurate to 0.1 N / in. Repeat the test for a total of five duplicate test specimens. Calculate the arithmetic mean of the maximum seal strength and report it as tensile strength, accurate to 0.1 N / in.

[0226] ISO 1924-3-Tensive Properties (Tensive Strength, Tensile Strength, Energy Absorption)

[0227] The tensile properties (tensile strength, tensile strength, and energy absorption) of the sample were calculated based on the measured force and elongation values ​​obtained using a constant-rate elongation test until the sample broke. The test was conducted according to pharmacopoeia method ISO 1924-3, with modifications noted herein. Measurements were performed using a load cell on a constant-rate tensile tension tester, with the measured force ranging from 1% to 99% of the sensor's limits. Suitable instruments were those from MTS Alliance using Test Suite Software, available from MTS Systems Corp., Eden Prairie, MN, or equivalent. All measurements were performed in a laboratory maintained at 23°C ± 2°C and 50% ± 2% relative humidity, with the test samples conditioned in this environment for at least 2 hours prior to testing.

[0228] Measurements are performed on MD (longitudinal) and CD (transverse) test samples taken from raw material rolls or sheets, or from finished product packaging. When cutting test samples from finished product packaging, care is taken to avoid contaminating or deforming the samples during the process. The cut samples should be free of residual adhesive and taken from an area of ​​the packaging free of any seams or creases. The test samples are cut into test spans of 25.4 mm wide and 50.8 mm long. The long side of the sample is parallel to the direction of interest (MD, CD). Typically, in finished product packaging, MD extends from the bottom to the top of the packaging, but this can be verified by determining the fiber orientation if in doubt. Ten duplicate test samples should be prepared from MD, and another ten from CD.

[0229] The tension tester is programmed as follows for a constant-rate elongation uniaxial breaking elongation test. Using calibrated gauge blocks, the gauge length (test span) is set to 50.8 mm, and the clamps are zeroed. The test sample is inserted into the clamps, with the long side centered and parallel to the central tension axis of the tension tester. The clamps are raised at a rate of 25.4 mm / min until the test sample breaks, and force (N) and elongation (mm) data are collected at 100 Hz throughout the test. A graph of force (N) versus elongation (mm) is plotted. The maximum force (N) is read from the graph and recorded as the peak force, accurate to 0.1 N, labeled MD or CD. The elongation at the point of maximum force (N) is read from the graph and recorded as the breaking elongation, accurate to 0.01 mm, labeled MD or CD. Based on the graph, the point (z) where the tangent to the curve intersects the elongation axis is determined, where the slope of the tangent is equal to the maximum slope of the curve. Now calculate the area under the force-elongation curve from point z to the point of maximum force and report it to an accuracy of 0.1 mJ, indicating MD or CD. [See Figure 2 in ISO 1924-3 for a description of a typical force-elongation curve, where point z is marked].

[0230] Calculate the arithmetic mean peak force for all MD replicates, then calculate the arithmetic mean peak force for all CD replicates, and record them as the average MD peak force and average CD peak force, respectively, accurate to 0.1 N. Calculate the arithmetic mean elongation at break for all MD and CD replicates, and record them as the average MD elongation at break and average CD elongation at break, respectively, accurate to 0.01 mm. Calculate the arithmetic mean area under the force-elongation curve for all MD replicates, then calculate the area under the MD curve for all CD replicates, and record them as the average area under the CD curve, respectively, accurate to 0.1 mJ.

[0231] Tensile strength was calculated by dividing the average peak force (N) by the width of the test specimen (25.4 mm). The tensile strengths of the MD and CD repeat samples were calculated and reported as MD tensile strength and CD tensile strength, respectively, accurate to 0.1 kN / m.

[0232] The breaking tensile strength is calculated by dividing the average elongation at break (mm) by the initial test length (test span) of 50.8 mm and then multiplying by 100. The breaking tensile strength of the MD and CD repeat samples is calculated and reported as MD breaking tensile strength and CD breaking tensile strength, respectively, accurate to the nearest percentage.

[0233] ISO 2758 - Bursting Strength

[0234] Bursting strength is the maximum uniformly distributed pressure that a test sample can withstand. Bursting strength is measured using the test apparatus described in pharmacopoeia method ISO 2758. A suitable instrument is the 13-60 Burst Tester for paper and foil, or an equivalent, available from Testing Machines, Inc. (New Castle, DE). The instrument is calibrated and operated according to the manufacturer's instructions. All measurements are performed in a laboratory maintained at 23°C ± 2°C and 50% ± 2% relative humidity, with the test samples conditioned in this environment for at least 2 hours prior to testing.

[0235] Measurements are performed on test samples taken from raw material rolls or sheets, or from finished product packaging. When cutting test samples from finished product packaging, care is taken to prevent contamination or deformation during the process. The test sample must be larger than the fixture used to hold it in the instrument. The test sample should be taken from an area free of creases, wrinkles, or seams.

[0236] The burst strength of a total of 10 replicate test samples was measured (using clamping pressure sufficient to prevent slippage during testing and a pumping rate of 95 ± 15 mL / min). For single-sided samples, the side of the test sample facing inwards from the packaging was subjected to pressure when placed in the fixture, and 10 replicate samples were tested in this orientation. For balanced (non-single-sided) samples, 5 replicate samples were tested under pressure from the inside of the packaging and 5 replicate samples were tested under pressure from the outside of the packaging, and the results were averaged together. The burst pressure of each test sample was recorded to an accuracy of 0.001 kPa. If the burst pressure is less than 70 kPa, multi-layer test material must be used. To obtain the burst strength, the burst pressure was divided by the number of test layers. The arithmetic mean burst pressure of all replicate samples was calculated and reported as the burst strength to an accuracy of 0.001 kPa.

[0237] ISO 534 - Calipers

[0238] The thickness (caliper / thickness) of the monolayer test samples was measured under static load using a micrometer according to the pharmacopoeia method ISO 534, with modifications mentioned herein. All measurements were performed in a laboratory maintained at 23°C ± 2°C and 50% ± 2% relative humidity, with the test samples conditioned in this environment for at least 2 hours prior to testing.

[0239] Thickness is measured using a micrometer equipped with a pressure foot capable of applying a stable pressure of 70 kPa ± 0.05 kPa to the test sample. The micrometer is a static-heavy instrument with readings accurate to 0.1 micrometers. A suitable instrument is the TMI digital micrometer model 49-56, available from Testing Machines Inc., New Castle, DE, or an equivalent. The pressure foot is a flat, circular, movable surface with a diameter smaller than the sample, capable of applying the required pressure. A suitable pressure foot diameter is 16.0 mm. The test sample is supported by a horizontal, flat reference platform that is larger than and parallel to the surface of the pressure foot. Calibrate and operate the system according to the manufacturer's instructions.

[0240] Measurements are performed on single-layer test samples taken from raw material rolls or sheets, or from finished product packaging. When removing test samples from finished packaging, care is taken to avoid contaminating or deforming the sample during the process. The removed sample should be free of residual adhesive and obtained from an area of ​​the packaging free of seams or creases. Ideally, the test sample should be 200 mm in diameter. 2 And it must be larger than the pressure foot.

[0241] To measure thickness, first zero the micrometer relative to a horizontal, flat reference platform. Place the test sample on the platform, with the test position centered below the pressure foot. Gently lower the pressure foot at a rate of 3.0 mm per second until full pressure is applied to the test sample. Wait 5 seconds, then record the thickness of the test sample, accurate to 0.1 micrometers. Repeat this process for a total of ten replicate test samples. Calculate the arithmetic mean of all thickness measurements and report the value as "Thickness," accurate to 0.1 micrometers.

[0242] ISO 536-Basis Weight

[0243] The basis weight of the test sample is the mass (in grams) per unit area (in square meters) of a single material layer, and is measured according to the pharmacopoeia method ISO 536. The mass of the test sample is cut into known areas, and the mass of the test sample is determined using an analytical balance accurate to 0.0001 g. All measurements are performed in a laboratory maintained at 23°C ± 2°C and 50% ± 2% relative humidity, and the test samples are conditioned in this environment for at least 2 hours prior to testing.

[0244] Measurements are performed on test samples taken from raw material rolls or sheets, or from finished product packaging. When removing test samples from finished product packaging, care is taken to avoid contaminating or deforming the sample during the process. The removed sample should be free of residual adhesive and taken from an area of ​​the packaging free of any seams or creases. Test samples must be as large as possible to account for any inherent material variability.

[0245] Measure the dimensions of the monolayer test samples using a calibrated steel ruler or equivalent from NIST. Calculate and record the area of ​​the test samples, accurate to 0.0001 square meters. Obtain the mass of the test samples using an analytical balance and record it, accurate to 0.0001 grams. Calculate and record the basis weight by dividing the mass (in grams) by the area (in square meters), accurate to 0.01 grams per square meter (gsm). Repeat this process for a total of ten replicate test samples. Calculate and report the arithmetic mean of the basis weights, accurate to 0.01 grams per square meter.

[0246] Bag stacking height test

[0247] The following determines the stacking height inside the bags of absorbent products:

[0248] equipment

[0249] A thickness tester with a flat, rigid horizontal slide plate is used. The thickness tester is configured such that the horizontal slide plate moves freely in the vertical direction, always maintaining a horizontal orientation directly above a flat, rigid horizontal substrate. The thickness tester includes a device for measuring the gap between the horizontal slide plate and the horizontal substrate, accurate to within ±0.5 mm. The horizontal slide plate and the horizontal substrate are larger than the surface of the absorbent product package that contacts each plate, i.e., each plate extends beyond the contact surface of the absorbent product package in all directions. The horizontal slide plate applies a downward force of 850 g ± 1 g (8.34 N) to the absorbent product package, which is achieved by placing a suitable weight at the center of the top surface of the horizontal slide plate that is not in contact with the package, such that the total mass of the slide plate plus the added weight is 850 g ± 1 g.

[0250] Test Procedure

[0251] Prior to measurement, the absorbent product packaging was equilibrated at 23℃±2℃ and 50%±5% relative humidity.

[0252] Lift the horizontal slide and center the absorbent product package below it, such that the absorbent product inside the package is horizontally oriented (see Figure 3). Fold any handles or other packaging features on the surface of the package against the surface of the package to minimize their impact on the measurement. Slowly lower the horizontal slide until it contacts the top surface of the package, and then release it. Ten seconds after releasing the horizontal slide, measure the gap between the horizontal slides, accurate to ±0.5 mm. Measure five identical packages (packages of the same size and the same number of absorbent products) and report the arithmetic mean as the package width. Calculate and report “Inner Stack Height” = (Package Width / Number of Absorbent Products per Stack) × 10, accurate to ±0.5 mm.

[0253] Colorant coverage percentage measurement method

[0254] The colorant coverage percentage measurement method measures the percentage of the area covered by colorant on the packaging sheet. Images are acquired using a flatbed scanner capable of scanning at 800 dpi with at least 24 bits of color and manual color management control (a suitable scanner is the Epson Perfection V750 Pro from Epson America Inc. (Long Beach CA), or equivalent). The scanner connects via an interface to a computer running color calibration software that calibrates the scanner against a color reflectance IT8 target using a corresponding reference file conforming to ANSI method IT8.7 / 2-1993 (suitable color calibration software is Monaco EZColor or i1Studio from X-Rite Grand Rapids (MI), or equivalent). The color calibration software builds an International Color Consortium (ICC) color profile for the scanner, which is used by the image acquisition program of an application that supports the ICC profile to color-correct the output images. Then, the color-corrected image is segmented by color thresholding using color analysis software (the appropriate image color analysis software is MATLAB R2017b, purchased from The Mathworks, Inc. (Natick, MA)).

[0255] Before testing, the sample was conditioned for 2 hours at a temperature of approximately 23℃ ± 2℃ and a relative humidity of approximately 50% ± 2%.

[0256] Turn on the scanner for 30 minutes before calibration and image acquisition. You can deselect any automatic color correction or color management options that may be available in the scanner software. If automatic color management cannot be disabled, the scanner is not suitable for this application. Follow the recommended procedures of the color calibration software to create and export an ICC color profile for the scanner. The color calibration software compares the acquired IT8 target image with the corresponding reference file to create and export the scanner's ICC color profile, which will be applied within the image analysis program to correct the colors of subsequent output images.

[0257] Obtain samples from packages or packaging materials that have identification tags. Select a single tag and cut it along its perimeter to remove it for testing. The tags selected for testing should not contain tears or wrinkles.

[0258] Open the scanner cover and carefully place the sample flat on the center of the scanner glass, with the stained surface facing the glass. In reflective mode, acquire a scan containing the patch area at a resolution of 800 dpi (approximately 31.5 pixels / mm) and 24-bit color. An ICC color profile is assigned to the image, generating a color-corrected sRGB image. Before analysis, save this calibrated image in an uncompressed format to preserve the calibrated R, G, B color values, such as a TIFF file.

[0259] Open the calibrated image in color analysis software. Smooth the image using a 2D Gaussian filter with σ = 3 to blur any individual points of colorant. Next, using a color thresholding procedure, select a color space for the thresholding process, such as CIELAB with three color values ​​L*, a*, and b*. Then, manually draw the boundaries of regions of interest (ROIs) within visually discernible areas containing only primary colors and no colorant to identify their color space values. Pieces with no visible primary color areas are considered to have 100% colorant coverage. The thresholding levels in all three channels of the selected color space are then manually adjusted to segment the areas of the piece containing colorant coverage from those areas of primary colors. Measure the area of ​​the piece containing colorant coverage and calculate the percentage of the area containing colorant coverage, recording it precisely to the nearest percentage.

[0260] In a similar manner, six duplicate packaging pieces were prepared, scanned, and analyzed. The arithmetic mean of the measured percentage values ​​of colorant coverage was calculated and reported, accurate to the nearest percentage.

[0261] The dimensions and values ​​disclosed herein should not be construed as strictly limited to the precise numerical values ​​cited. Rather, unless otherwise specified, each such dimension is intended to represent the stated value and a range around which it is functionally equivalent. For example, a dimension disclosed as “40 mm” is intended to represent “approximately 40 mm”.

[0262] Unless expressly excluded or otherwise limited, every reference cited herein, including any cross-references or related patents or patent applications, and any patent application or patent claiming priority to or benefiting from it, is incorporated herein by reference in its entirety. Reference to any reference is not an endorsement of it as prior art to any disclosed or protected art herein, nor is it an endorsement of any such invention, either on its own or in combination with any one or more references. Furthermore, where any meaning or definition of a term in this invention conflicts with any meaning or definition of the same term in referenced documents, the meaning or definition given to that term in this invention shall prevail.

[0263] While specific embodiments of the invention have been illustrated and described, it will be apparent to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, it is intended that all such changes and modifications falling within the scope of the invention be covered in the appended claims.

Claims

1. A package for one or more absorbent articles, wherein the one or more absorbent articles are sealed within the package, the package comprising: Multiple chips, including consumer-facing chips, A plurality of seals, the plurality of seals comprising at least a portion of the plurality of sheets, wherein each of the plurality of seals includes an adhesive disposed in a sealing region, and one or more of the plurality of seals includes an adhesive region larger than its corresponding sealing region; and Packaging materials comprising natural fibers and having a basis weight between 50 gsm and 120 gsm as determined by ISO 536 as modified herein, and wherein said packaging materials are recyclable. Basis weight determination via ISO 536 as modified in this article includes: The dimensions of the test samples were measured using a calibrated steel metal ruler from NIST. Calculate and record the area of ​​the test sample, accurate to 0.0001 square meters; The mass of the test sample was determined and recorded using an analytical balance, accurate to 0.0001 grams; The basis weight is calculated and recorded by dividing the mass by the area, accurate to 0.01 grams per square meter; A total of ten repeated test samples were used; and Calculate and report the arithmetic mean of the stated basis weights, accurate to 0.01 g / m². All measurements were conducted in a laboratory maintained at 23℃±2℃ and 50%±2% relative humidity, and the test samples were conditioned in this environment for at least 2 hours before testing.

2. The packaging according to claim 1, wherein the packaging material has a basis weight between 60 gsm and 105 gsm.

3. The packaging according to claim 1, wherein the packaging material has a basis weight between 70 gsm and 90 gsm.

4. The package according to any one of the preceding claims, wherein the package is generally cubic in shape and further comprises: The right panel is disposed between the consumer-facing panel and the rear panel; A corresponding left sheet, which is disposed between the consumer-facing sheet and the rear sheet; a back sheet, which is disposed between the consumer-facing sheet and the rear sheet; And the corresponding top film.

5. The packaging according to any one of claims 1-3, wherein one or more of the sealing regions have an adhesive coverage of between 50% and 100%.

6. The packaging according to any one of claims 1-3, wherein the adhesive area has an adhesive coverage of between 25% and 100%.

7. The packaging according to claim 6, wherein the adhesive area has an adhesive coverage of 25% to 80%.

8. The packaging according to claim 6, wherein the adhesive area has an adhesive coverage of 25% to 75%.

9. The packaging according to any one of claims 1-3, wherein one or more of the sealing regions comprise a colorant or coating.

10. The packaging according to claim 9, wherein the one or more sealing areas have a colorant or coating coverage of between 25% and 100%.

11. The packaging according to claim 10, wherein the one or more sealing areas have a colorant or coating coverage of 30% to 100%.

12. The packaging according to claim 10, wherein the one or more sealing areas have a colorant or coating coverage of 40% to 100%.

13. The packaging according to any one of claims 1-3, wherein the adhesive area comprises a colorant or coating.

14. The packaging according to any one of claims 1-3, wherein the plurality of seals includes an inlet seal, wherein the inlet seal includes an inlet seal region, and wherein the adhesive region is adjacent to the inlet seal region.

15. The packaging according to claim 14, wherein the inlet sealing area has an adhesive coverage of between 50% and 100%.

16. The packaging of claim 15, wherein the adhesive area has an adhesive coverage of between 25% and 100%.

17. The packaging of claim 16, wherein the adhesive area has an adhesive coverage of 25% to 80%.

18. The packaging according to claim 16, wherein the adhesive area has an adhesive coverage of 25% to 75%.

19. The package of claim 14, wherein the inlet sealing area comprises a colorant or coating.

20. The packaging of claim 19, wherein the inlet sealing area has a colorant or coating coverage of 25% to 100%.

21. The packaging according to claim 20, wherein the inlet sealing area has a colorant or coating coverage of 30% to 100%.

22. The packaging according to claim 20, wherein the inlet sealing area has a colorant or coating coverage of 40% to 100%.

23. The packaging of claim 14, wherein the adhesive area comprises a colorant or coating.

24. The package of claim 14, wherein the package comprises: The right panel is disposed between the consumer-facing panel and the rear panel; A corresponding left sheet, which is disposed between the consumer-facing sheet and the rear sheet; a back sheet, which is disposed between the consumer-facing sheet and the rear sheet; And the opposite top plate, the inlet seal is at least partially disposed on the top plate.

25. The packaging according to claim 14, wherein the packaging comprises: The right panel is disposed between the consumer-facing panel and the rear panel; The opposite left piece is disposed between the consumer-facing piece and the rear piece; the bottom piece is disposed between the consumer-facing piece and the rear piece; and the opposite top piece is disposed at least partially on at least one of the left piece or the right piece.

26. The package according to any one of claims 1-3, wherein the adhesive area comprises an adhesive applied in a striped pattern.

27. The packaging of claim 26, wherein the stripe pattern comprises a plurality of stripes, the length of the plurality of stripes being parallel to the length of the adhesive region.

28. The packaging of claim 26, wherein the stripe pattern comprises a plurality of stripes, the length of the plurality of stripes being perpendicular to the length of the adhesive region.

29. The packaging of claim 26, wherein the stripe pattern comprises a plurality of stripes oriented at an angle relative to the elongated dimension of the adhesive region.

30. The packaging of claim 26, wherein the stripe pattern comprises a first plurality of stripes and a second plurality of stripes, wherein the first plurality of stripes are oriented at a first angle relative to the elongated dimension of the adhesive region, and the second plurality of stripes are oriented at a second angle relative to the elongated dimension of the adhesive region, wherein the first angle and the second angle are different.

31. The packaging according to claim 30, wherein the first angle with respect to the elongated dimension of the adhesive region is between 15 degrees and 75 degrees.

32. The packaging according to claim 30, wherein the second angle with respect to the elongated dimension of the adhesive region is between 105 degrees and 165 degrees.

33. The packaging according to any one of claims 1-3, wherein the adhesive area comprises an adhesive applied in a pattern, wherein the pattern comprises a plurality of discrete circles, ellipses or polygons.

34. The packaging according to any one of claims 1-3, wherein the natural fiber comprises at least one of wood fiber or pulp fiber.

35. The packaging according to any one of claims 1-3, wherein the packaging material comprises non-recyclable material in a weight percentage between 0.5% and 30%.

36. The packaging of claim 35, wherein the packaging material comprises non-recyclable material in a weight percentage between 0.5% and 20%.

37. The packaging of claim 35, wherein the packaging material comprises non-recyclable material in a weight percentage between 0.5% and 10%.

38. The packaging according to any one of claims 1-3, wherein the packaging material comprises non-recyclable material at a weight percentage between 0.5% and 5%.

39. The packaging according to any one of claims 1-3, wherein the packaging material exhibits a recyclable percentage between 70% and 99.9% as determined by the PTS-RH:021 / 97 (October 2019 draft) method.

40. The packaging of claim 39, wherein the packaging material exhibits a recyclable percentage of 85% to 99.9% as determined by the PTS-RH:021 / 97 (October 2019 draft) method.

41. The packaging of claim 39, wherein the packaging material exhibits a recyclable percentage of 90% to 99.9% as determined by the PTS-RH:021 / 97 (October 2019 draft) method.

42. The packaging material according to any one of claims 1-3, wherein the packaging material does not contain a barrier layer.

43. The packaging according to any one of claims 1-3, wherein the one or more absorbent articles exhibit an in-bag stacking height between 70 mm and 150 mm.

44. The packaging according to any one of the preceding claims, wherein the one or more absorbent articles exhibit an in-bag stacking height of 70 mm to 100 mm.

45. The packaging according to any one of the preceding claims, wherein the one or more absorbent articles exhibit an in-bag stacking height of 70 mm to 90 mm.

46. ​​The packaging of claim 43, wherein the one or more absorbent articles comprise at least one of diaper pants, incontinence pads, diapers, or adult incontinence briefs.

47. The packaging according to any one of claims 1-3, wherein the packaging material comprises a single layer (one layer).

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