Absorbent article with waist pocket

Abstract

An absorbent article comprising a waist pocket positioned near a first transverse edge, wherein the waist pocket comprises a proximal transversal portion, a distal transversal portion, and a central transversal portion between the proximal transversal portion and the distal transversal portion, a first and second nonwoven layer; and at least one elastic material comprising elastic member positioned between the first and second nonwoven layer and extending substantially transversally wherein the proximal transversal portion is at least partially attached to a body facing side of the absorbent article and the distal transversal portion is at least partially unattached to the body facing side of the absorbent article, such that a waist pocket opening is formed between the distal transversal portion and the topsheet, wherein a central grammage of elastic material in the central transversal portion is lower than a distal grammage of elastic material in the distal transversal portion.

Description

[0001] ABSORBENT ARTICLE WITH WAIST POCKET

[0002] TECHNICAL FIELD

[0003] The present invention pertains to the technical field of absorbent articles, more preferably disposable personal care articles such as diapers, baby pants, adult incontinent garments, and the like. More specifically the present invention relates to an absorbent article, preferably of the diaper-type, comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core which comprises absorbent material and which is positioned between the liquid pervious topsheet and the liquid impervious backsheet. The absorbent article has a first and second longitudinal edge and a first and second transverse edg, wherein the absorbent article comprises a waist pocket positioned near the first transverse edge and / or near the second transverse edge.

[0004] BACKGROUND

[0005] It is known to provide a guard pocket at the rear side of an absorbent article to further prevent leakage of bodily exudates towards a back of a wearer. Typically, such guard pocket is provided by the provision of folds in existing elements of the absorbent article or of additional layers or sheets of material which are somehow attached to the rear section of the absorbent article.

[0006] SUMMARY

[0007] The object of embodiments of the invention is to provide an absorbent article of the type stated in the preamble, with a good protection against the escape of bodily exudates at the waistline and in particular at least along a first transverse edge of the absorbent article, and preferably also along a second transverse edge of the absorbent article, while in addition offering an improved fit and comfort to the wearer, while lowering manufacturing costs.

[0008] According to a first aspect of the invention, there is provided an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core which comprises absorbent material and which is positioned between the liquid pervious topsheet and the liquid impervious backsheet; said absorbent article having a first and second longitudinal edge and a first and second transverse edge; wherein the absorbent article comprises a waist pocket positioned near the first transverse edge, wherein the waist pocket comprises:

[0009] a proximal transversal portion extending from a proximal transverse edge of the waist pocket, which is proximal to the first transverse edge, towards a distal transversal edge of the waist pocket opposite to the proximal transverse edge;

[0010] a distal transversal portion extending from the distal transverse edge of the waist pocket towards the proximal transverse edge of the waist pocket; anda central transversal portion between the proximal transversal portion and the distal transversal portion and comprising a transversal center line of the waist pocket;

[0011] a first longitudinal side edge,

[0012] a second longitudinal side edge,

[0013] a first and second nonwoven layer; and

[0014] at least one elastic material comprising elastic member positioned between the first and second nonwoven layer and extending substantially transversally between the first longitudinal side edge and the second longitudinal side edge,

[0015] wherein the proximal transversal portion is at least partially attached to a body facing side of the absorbent article and the distal transversal portion is at least partially unattached to the body facing side of the absorbent article, such that a waist pocket opening is formed between the distal transversal portion and the topsheet; and

[0016] wherein the at least one elastic member of the waist pocket is positioned such that a central grammage of elastic material in the central transversal portion is lower than a distal grammage of elastic material in the distal transversal portion, and / or lower than a proximal grammage of elastic material in the proximal transversal portion.

[0017] This configuration of the at least one elastic member enables an efficient opening of the waist pocket when the absorbent article is worn, which is beneficial at the front and / or the rear of the absorbent article. More in particular, the specific arrangement of elastic grammage (lower in the central portion) creates a dynamic, self-opening pocket. This ensures the pocket does not lie flat but actively forms a three-dimensional barrier when the article is worn, providing superior and more reliable containment of bodily exudates, particularly low-viscosity fecal matter.

[0018] Preferably, the at least one elastic member of the waist pocket is positioned such that the central grammage of elastic material in the central transversal portion is lower than a proximal grammage of elastic material in the proximal transversal portion.

[0019] This configuration of the at least one elastic member improves comfort and fit around the waist of a wearer, which is especially beneficial at the rear. More in particular, this configuration enhances wearer comfort by reducing the elastic pressure at the base of the pocket (proximal portion) where it contacts the wearer's skin, while still ensuring the pocket opens effectively.

[0020] Preferably, the distal transversal portion comprises a first distal transversal sub-portion extending from the distal transverse edge of the waist pocket and a second distal transversal sub-portion between the first transversal sub-portion and the central transversal portion, and a first distalgrammage of elastic material in the first distal transversal sub-portion is higher than a second distal grammage of elastic material in the second distal transversal sub-portion. This allows for even finer control over the pocket's opening and fit. The outermost edge can have a very high elastic force to initiate the opening, while an intermediate sub-portion can have a moderate force to create a graduated, bellow-like shape. This optimizes both containment and comfort.

[0021] Preferably, the proximal transversal portion comprises a first proximal transversal sub-portion extending from the proximal transverse edge of the waist pocket and a second proximal transversal sub-portion between the first proximal transversal sub-portion and the central transversal portion, and a first grammage of elastic material in the first proximal transversal sub-portion is higher than a second grammage of elastic material in the second proximal transversal sub-portion. These subportions with graduated elastic grammages allow for even finer control over the pocket's geometry and performance. A very high elastic force at the outermost edge (the first sub-portion) can initiate a strong, immediate opening action. An intermediate force in the second sub-portion can then help form a more voluminous, bellow-like pocket shape. This sophisticated force profile optimizes both the initial containment action and the total holding capacity of the pocket.

[0022] Preferably, each one of the proximal transversal portion and the distal transversal portion has a surface area which is substantially double of a surface area of the central transversal portion.

[0023] Preferably, a surface area of each one of the first distal transversal sub-portion, second distal transversal sub-portion, first proximal transversal sub-portion, second proximal transversal subportion, and central transversal portion is substantially the same.

[0024] Preferably, the absorbent article comprises a pair of longitudinally extending leg cuffs, wherein the first longitudinal side edge and the second longitudinal side edge of the waist pocket are adhesively attached to the leg cuffs. This structural integration creates a holistic leakage barrier system. The waist pocket is primarily responsible for managing longitudinal leakage (i.e., up the back or front), while the leg cuffs manage lateral leakage (i.e., at the leg openings). By adhesively attaching the waist pocket to the leg cuffs, a continuous seal is formed, eliminating potential gaps between the two containment systems and providing comprehensive protection against leaks from all directions.

[0025] Preferably, the proximal transverse edge of the waist pocket is adhesively attached to the topsheet. Preferably, the first and second nonwoven layer consist of the same nonwoven material.

[0026] Preferably, the first and second nonwoven layer consist of an at least partially folded nonwoven sheet.Preferably, the at least partially folded nonwoven sheet is folded according to a C-fold or L-fold configuration. This achieves a manufacturing advantage. More in particular, using a single, folded sheet (C-fold or L-fold) is more cost-effective and less prone to error than assembling two separate nonwoven layers, reducing process complexity and potential points of failure.

[0027] Preferably, a free portion of the at least partially folded nonwoven is facing the body facing side of the absorbent article.

[0028] Preferably, the at least one elastic member is adhesively attached between the first and second nonwoven layer. While adhesive attachment is a preferred method, the elastic members may alternatively be secured using other bonding techniques known in the art, such as ultrasonic bonding, thermal bonding, or mechanical entanglement, or a combination thereof, to ensure they remain securely positioned between the nonwoven layers.

[0029] Preferably, the first and / or second nonwoven layer comprises spunbond nonwoven, meltblown nonwoven, spunlaced nonwoven or combination thereof.

[0030] Preferably, the first and / or second nonwoven layer is a spunbond-meltblown-spunbond, SMS, nonwoven.

[0031] Preferably, the first and / or second nonwoven layer has a grammage of between 4 - 15 gsm, preferably between 6 - 12 gsm, most preferably between 8 - 10 gsm.

[0032] Preferably, the first and / or second nonwoven layer comprise, preferably consist of, any one of polypropylene, polylactic acid, and biobased polyethylene.

[0033] Preferably, the first and the second nonwoven layer consist of polypropylene.

[0034] Preferably, the at least one elastic member comprises a plurality of elastic members which are mutually positioned at a distance of between 4 and 10 mm of each other.

[0035] Preferably, the central transversal portion is free of elastic members.

[0036] Preferably, the proximal transversal portion is free of elastic members.

[0037] Preferably, the first transverse edge is a front transverse edge of the absorbent article, and wherein the waist pocket is a front waist pocket.Preferably, the first transverse edge is a rear transverse edge of the absorbent article, and wherein the waist pocket is a rear waist pocket.

[0038] Preferably, the absorbent article comprises a second waist pocket positioned near the second transverse edge. All features and benefits as described in view of the waist pocket, apply in a similar manner to the second waist pocket, mutatis mutandis. Evidently, if the second transverse edge is a front edge, the second waist pocket is a front waist pocket, whereas if the second transverse edge is a rear edge, the second waist pocket is a rear waist pocket. As elaborated above, it is beneficial to have the most weight or amount of elastic elements in the distal transversal portion for a front waist pocket, whereas it is beneficial to have the least weight or amount of elastic elements in the central transversal portion for a rear waist pocket. Elastic elements in the distal transversal portion assist in efficiently opening the front and / or rear waist pocket, whereas elastic elements in the proximal transversal portion assist in improving comfort and fit around the waist of a wearer which is especially beneficial at the rear.

[0039] Preferably, the second waist pocket comprises a proximal transversal portion extending from a proximal transverse edge of the second waist pocket, which is proximal to the second transverse edge, towards a distal transversal edge of the second waist pocket opposite to the proximal transverse edge; a distal transversal portion extending from the distal transverse edge of the second waist pocket towards the proximal transverse edge of the second waist pocket; and a central transversal portion between the proximal transversal portion and the distal transversal portion and comprising a transversal center line of the second waist pocket; a first longitudinal side edge, a second longitudinal side edge, a first and second nonwoven layer; and at least one elastic material comprising elastic member positioned between the first and second nonwoven layer and extending substantially transversally between the first longitudinal side edge and the second longitudinal side edge, wherein the proximal transversal portion is at least partially attached to the body facing side of the absorbent article and the distal transversal portion is at least partially unattached to the body facing side of the absorbent article, such that a second waist pocket opening is formed between the distal transversal portion of the second waist pocket and the topsheet; and wherein the at least one elastic member of the second waist pocket is positioned such that a central grammage of elastic material in the central transversal portion is lower than a distal grammage of elastic material in the distal transversal portion.

[0040] Preferably, the at least one elastic member of the second waist pocket is positioned such that the central grammage of elastic material in the central transversal portion is lower than a proximal grammage of elastic material in the proximal transversal portion.Preferably, the distal transversal portion comprises a first distal transversal sub-portion extending from the distal transverse edge of the second waist pocket and a second distal transversal subportion between the first transversal sub-portion and the central transversal portion, and wherein a first distal grammage of elastic material in the first distal transversal sub-portion is higher than a second distal grammage of elastic material in the second distal transversal sub-portion.

[0041] Preferably, the proximal transversal portion comprises a first proximal transversal sub-portion extending from the proximal transverse edge of the second waist pocket and a second proximal transversal sub-portion between the first proximal transversal sub-portion and the central transversal portion, and wherein a first grammage of elastic material in the first proximal transversal sub-portion is higher than a second grammage of elastic material in the second proximal transversal sub-portion.

[0042] Preferably, the at least one elastic member comprises at least one elastic strand.

[0043] Preferably, an amount of elastic members in the central transversal portion is lower than an amount of elastic members in the proximal transversal portion.

[0044] Preferably, an amount of elastic elements in the first distal transversal sub-portion is higher than an amount of elastic elements in the second distal transversal sub-portion.

[0045] Preferably, an amount of elastic elements in the first proximal transversal sub-portion is higher than an amount of elastic elements in the second proximal transversal sub-portion.

[0046] Preferably, the waist pocket is provided as a separate patch which is partially attached to the body facing side of the absorbent article.

[0047] Preferably, the separate patch is substantially rectangular shaped. While a rectangular shape is preferred for manufacturing simplicity, the patch may also be formed in other shapes to enhance function or fit, such as a trapezoidal shape, a curved shape, or an anatomically contoured shape, without departing from the core inventive concept of differential elasticity.

[0048] Preferably, the absorbent article according to any one of the preceding claim, wherein the absorbent core is provided with at least one channel area which is substantially free of absorbent material.

[0049] Preferably the absorbent core of an absorbent article according to the first aspect of the invention comprises absorbent material and at least one channel, wherein less absorbent material per surfacearea is present in the at least one channel as compared to an area around the at least one channel, wherein preferably substantially no absorbent material is present in the at least one channel. This configuration has the benefit that the channel in the core rapidly draws fluid away from the waist region and distributes it towards the center of the diaper. This reduces the volume of fluid the waist pocket must contain, allowing the pocket to function as a highly effective secondary barrier against sudden gushes or overflow.

[0050] Preferably the at least one channel extends substantially in the longitudinal direction.

[0051] Preferably a bottom core wrap of the absorbent core is attached to a top core wrap of the absorbent core at the at least one channel.

[0052] Additional features and benefits which are described above and below in view of embodiments having a rear folded portion according to the first aspect apply similarly to embodiments having a front rear folded portion according to the second aspect, mutatis mutandis, and vice versa.

[0053] BRIEF DESCRIPTION OF FIGURES

[0054] The accompanying drawings are used to illustrate presently preferred non-limiting exemplary embodiments of devices of the present invention. The above and other advantages of the features and objects of the invention will become more apparent and the invention will be better understood from the following detailed description when read in conjunction with the accompanying drawings, in which:

[0055] Figures 1 is a schematic top plan view of an exemplary embodiment of an absorbent article according to the first aspect of the invention, wherein the waist pocket is a rear waist pocket; Figures 2 is a schematic top plan view of an alternative embodiment of an absorbent article according to the first aspect of the invention, wherein the waist pocket is a front waist pocket; and Figures 3 is a schematic top plan view of a further alternative embodiment of an absorbent article according to the first aspect of the invention, wherein two waist pockets are provided, i.e. a rear waist pocket and a front waist pocket.

[0056] DESCRIPTION OF EMBODIMENTS

[0057] Figures 1, 2 and 3 illustrate mutually different embodiments of an absorbent article according to the first aspect of the invention.More in particular, the figures illustrate an absorbent article 100 comprising a liquid pervious topsheet 110, a liquid impervious backsheet 120, and an absorbent core 130 which comprises absorbent material and which is positioned between the liquid pervious topsheet 110 and the liquid impervious backsheet 120; said absorbent article having a first and second longitudinal edge 103, 104 and a first and second transverse edge 101, 102; wherein the absorbent article comprises a waist pocket 140, 150 positioned near the first transverse edge 101, wherein the waist pocket 140, 150 comprises a proximal transversal portion HOP, 150P extending from a proximal transverse edge 141, 151 of the waist pocket 140, 150, which is proximal to the first transverse edge 101, towards a distal transversal edge of the waist pocket opposite to the proximal transverse edge; a distal transversal portion 140D, 150D extending from the distal transverse edge 142, 152 of the waist pocket towards the proximal transverse edge of the waist pocket; and a central transversal portion 140C, 150C between the proximal transversal portion and the distal transversal portion and comprising a transversal center line TCL, TCL’ of the waist pocket; a first longitudinal side edge 143, 153, a second longitudinal side edge 144, 154, a first and second nonwoven layer NW1, NW2, NW1’, NW2’; and at least one elastic material comprising elastic member 145, 155 positioned between the first and second nonwoven layer and extending substantially transversally between the first longitudinal side edge and the second longitudinal side edge, wherein the proximal transversal portion HOP, 150P is at least partially attached to a body facing side of the absorbent article 100 and the distal transversal portion HOD, 150D is at least partially unattached to the body facing side of the absorbent article, such that a waist pocket opening is formed between the distal transversal portion MOD, 150D and the topsheet 110; and wherein the at least one elastic member 145, 155 of the waist pocket is positioned such that a central grammage of elastic material in the central transversal portion 140C, 150C is lower than a distal grammage of elastic material in the distal transversal portion MOD, 150D.

[0058] The inventive arrangement of differential elastic grammage creates a dynamic, self-opening mechanism. The higher elastic tension in the unattached distal portion (MOD, 150D) generates a contraction force that lifts this portion away from the underlying topsheet 110 when the article is worn and stretched around the wearer's body. The central portion (140C, 150C), having a lower elastic grammage, acts as a flexible hinge or bellows region, allowing the distal portion to move freely and form a three-dimensional receiving space. This ensures the pocket is actively biased to an open configuration, making it highly effective at catching and containing bodily exudates, especially during sudden gushes or when the wearer is in a supine position.

[0059] Beneficially, the at least one elastic member 145, 155 of the waist pocket 140, 150 is positioned such that the central grammage of elastic material in the central transversal portion 140C, 150C islower than a proximal grammage of elastic material in the proximal transversal portion HOP, 150P.

[0060] Further beneficially the distal transversal portion 140D, 150D comprises a first distal transversal sub-portion extending from the distal transverse edge of the waist pocket and a second distal transversal sub-portion between the first transversal sub-portion and the central transversal portion, and wherein a first distal grammage of elastic material in the first distal transversal sub-portion is higher than a second distal grammage of elastic material in the second distal transversal subportion.

[0061] The proximal transversal portion HOP, 150P comprises a first proximal transversal sub-portion extending from the proximal transverse edge of the waist pocket and a second proximal transversal sub-portion between the first proximal transversal sub-portion and the central transversal portion, and wherein a first grammage of elastic material in the first proximal transversal sub-portion is higher than a second grammage of elastic material in the second proximal transversal sub-portion.

[0062] Each one of the proximal transversal portion WOP, 150P and the distal transversal portion 140D, 150D has a surface area which is substantially double of a surface area of the central transversal portionl40C, 150C.

[0063] A surface area of each one of the first distal transversal sub-portion, second distal transversal subportion, first proximal transversal sub-portion, second proximal transversal sub-portion, and central transversal portion is substantially the same.

[0064] The absorbent article 100 comprises a pair of longitudinally extending leg cuffs, wherein the first longitudinal side edge and the second longitudinal side edge of the waist pocket are adhesively attached to the leg cuffs.

[0065] The proximal transverse edge 141, 151 of the waist pocket 140, 150 is adhesively attached to the topsheet. In the shown embodiments adhesive between the waist pocket 140, 150 and the topsheet are illustrated by the shaded parts of the waist pocket 140, 150.

[0066] The first and second nonwoven layer NW1, NW2, NW1’, NW2’ consist of the same nonwoven material. Preferably, the first and second nonwoven layer NW1, NW2, NW1’, NW2’ consist of an at least partially folded nonwoven sheet. As illustrated, the at least partially folded nonwoven sheet is folded according to a C-fold or L-fold configuration. As indicated, a free portion of the at leastpartially folded nonwoven is facing the body facing side of the absorbent article 100, see the arrow “”to topsheet” in the figures.

[0067] The use of a single, folded nonwoven sheet offers significant manufacturing efficiencies. It simplifies the assembly process, reduces material handling requirements, and can lower production costs compared to processes that require the alignment and bonding of two separate nonwoven layers.

[0068] The at least one elastic member 145, 155 is adhesively attached between the first and second nonwoven layer NW1, NW2, NW1’, NW2’.

[0069] While adhesive attachment is a common and effective method, it is contemplated that other bonding techniques may be used to secure the elastic members 145, 155. These alternative techniques include, but are not limited to, ultrasonic bonding, thermal bonding, or mechanical bonding, which may be used alone or in combination with adhesives to ensure the elastic members are securely fixed in their intended positions.

[0070] The first and / or second nonwoven layer NW1, NW2, NW1’, NW2’ comprises spunbond nonwoven, meltblown nonwoven, spunlaced nonwoven or combination thereof. Preferably the first and / or second nonwoven layer NW1, NW2, NW1’, NW2’ is a spunbond-meltblown-spunbond, SMS, nonwoven. The first and / or second nonwoven layer may have a grammage of between 4 - 15 gsm, preferably between 6 - 12 gsm, most preferably between 8 - 10 gsm.

[0071] The first and / or second nonwoven layer NW1, NW2, NW1’, NW2’comprise, preferably consist of, any one of polypropylene, polylactic acid, and biobased polyethylene. Preferably, the first and the second nonwoven layer NW1, NW2, NW1’, NW2’consist of polypropylene.

[0072] In certain embodiments, an air-through bonded nonwoven may be used for its superior softness, providing a more gentle feel against the wearer's skin. The choice of nonwoven material can be optimized to balance properties such as strength, softness, and hydrophobicity to suit the specific design requirements of the waist pocket.

[0073] The at least one elastic member 145, 155 comprises a plurality of elastic members which are mutually positioned at a distance of between 4 and 10 mm of each other.

[0074] The variation in "grammage" of the elastic material can be achieved through several means. For example, it can be achieved by varying the number of elastic strands in each portion, by using elastic strands of different tension or decitex in each portion, or by using different types of elasticmaterials, such as elastic films or stretchable nonwoven laminates, in each portion. This flexibility allows for precise tuning of the pocket's mechanical properties.

[0075] In the embodiments of figures 2 and 3, the central transversal portion 140C, 150C is free of elastic members. In addition, in the embodiment of figures 2 and 3, the proximal transversal portion 150P is free of elastic members.

[0076] In the illustrated embodiments the first transverse edge 101 is a rear transverse edge 101 of the absorbent article, and the waist pocket 140 is a rear waist pocket. When illustrated, the waist pocket 150 is a front waist pocket. The front waist pocket 150 can be provided in isolation as the embodiment of figure 2, or as a second waist pocket 150 in addition to a rear waist pocket 140 as the embodiment of figure 3.

[0077] The at least one elastic member 145, 155 comprises at least one elastic strand.

[0078] In the illustrated embodiments, an amount of elastic members 145, 155 in the central transversal portion 140C, 150C is lower than an amount of elastic members 145, 155 in the proximal transversal portion HOP, 150P.

[0079] Further beneficially, an amount of elastic elements 145, 155 in the first distal transversal subportion is higher than an amount of elastic elements in the second distal transversal sub-portion. Alternatively or in addition an amount of elastic elements 145, 155 in the first proximal transversal sub-portion is higher than an amount of elastic elements in the second proximal transversal subportion.

[0080] In the illustrated embodiments the waist pocket 140, 150 is provided as a separate patch which is partially attached to the body facing side of the absorbent article and which is substantially rectangular shaped.

[0081] While a rectangular shape offers manufacturing simplicity, the patch may be formed in other configurations to further enhance fit and function. For instance, the patch could have a trapezoidal shape, a curved profile to better match the wearer's anatomy, or a generally contoured shape. Such alternative shapes are considered within the scope of the invention, provided they incorporate the core principle of differential elasticity across their transversal portions.

[0082] Although it is not shown in the figures, it is preferred that the absorbent core if provided with at least one channel which is substantially free of absorbent material to improve liquid distribution and absorption. The inclusion of a channel in the absorbent core 130 creates a synergistic effect with the waist pocket 140, 150. The channel improves the fluid handling performance of the coreby rapidly wicking liquid away from the waist region and distributing it throughout the core's length and width. This rapid uptake reduces the immediate volume of fluid that the waist pocket is required to contain, thereby enhancing its effectiveness as a secondary barrier against leakage from sudden or high- volume discharges.

[0083] It will be clear to the skilled person that in addition to the illustrated and described elastic members, additional elastic members may be present in the waist pocket. For example, an absorbent article as described above might have a total of between 1 and 6 elastic members in a front waist pocket and a total of between 2 and 10 elastic members in the rear waist pocket.

[0084] Principle of operation

[0085] The waist pocket of the present invention operates on the principle of a controlled force imbalance created by the strategic placement and tension of the elastic members 145, 155. When the absorbent article 100 is stretched around a wearer's body, the elastic members are placed under tension.

[0086] In a conventional pocket with uniform elasticity, the entire structure would simply contract uniformly, causing the pocket to lie flat or even curl inwards, thus failing to create a reliable opening.

[0087] In contrast, the present invention deliberately engineers a differential force profile. The distal transversal portion (140D, 150D), having a high elastic grammage and being unattached to the topsheet 110, generates a strong contraction force vector directed generally inward and upward. The proximal transversal portion (140?, 150P), also having a high elastic grammage but being attached to the topsheet 110, acts as a firm anchor point. The central transversal portion (140C, 150C), having a low or zero elastic grammage, functions as a zone of low resistance or a flexible hinge.

[0088] The result is that the strong contraction force of the distal portion is not counteracted by a similar force in the central portion. This force imbalance creates a rotational moment around the central portion, actively lifting the edge of the distal portion away from the topsheet and biasing the pocket into a three-dimensional, open configuration. The pocket does not merely have the potential to open, it is mechanically engineered to do so.Working example

[0089] In one exemplary, non-limiting embodiment of a rear waist pocket 140, the differential grammage is achieved as follows:

[0090] Distal Transversal Portion (140D): This portion is elasticated with four parallel strands of Lycra spandex, each with a tension of 620 decitex, applied at 250% elongation.

[0091] Central Transversal Portion (140C): This portion contains two parallel strands of Lycra spandex, each with a tension of 470 decitex, applied at 250% elongation.

[0092] Proximal Transversal Portion (HOP): This portion is elasticated with three parallel strands of Lycra spandex, each with a tension of 470 decitex, applied at 250% elongation.

[0093] This specific configuration results in a high-force zone at the opening, a low-force flexible hinge zone in the middle, and a medium-force anchoring zone at the base, reliably producing the desired self-opening effect. The central portion still has a significantly lower elastic grammage than the distal and proximal portions, allowing it to function effectively as a hinge while providing minimal tension to prevent sagging of the pocket structure itself.

[0094] Test method for Pocket Opening Height

[0095] To quantify the effect of the efficient opening, the following test method can be used:

[0096] Sample Preparation: An absorbent article (100) comprising the waist pocket (140, 150) is laid flat on a horizontal surface.

[0097] Mounting: The two opposing corners of the transverse edge (101 or 102) where the pocket is located are clamped.

[0098] Extension: The clamps are moved apart, stretching the article's waist region to 80% of its maximum extension to simulate the forces experienced when worn by a user.

[0099] Measurement: While the article is held in this extended state, a distance measuring device, such as a non-contact laser displacement sensor, is used to measure the vertical distance (Z-dimension) from the surface of the topsheet (110) to the highest point of the free edge of the distal transversal portion (140D, 150D). This distance is defined as the "Pocket Opening Height".

[0100] Verification: An article of the present invention, when measured by this method, exhibits a Pocket Opening Height of at least 3 mm, preferably at least 5mm, more preferably at least 7 mm, and most preferably at least 9mm.

[0101] The working example as presented above, demonstrated a Pocket Opening Height of 5mm according to this Pocket Opening Height test method.For comparison, a conventional absorbent article which was constructed in a similar way, with a waist pocket of identical dimensions and materials, but with a uniform elastic grammage across all three portions (distal, central, and proximal) was analyzed. When subjected to the "Test Method for Pocket Opening Height" described above, the conventional pocket exhibited a Pocket Opening Height of less than 2 mm. The uniform elastic contraction caused the pocket to lie substantially flat against the topsheet, failing to create a meaningful three-dimensional barrier. This demonstrates the criticality of the claimed differential elastic grammage for achieving the technical effect of an efficiently opening pocket.

[0102] Glossary

[0103] As used in the present application, the following terms have the following meanings:

[0104] "A", "an", and "the" as used herein refers to both singular and plural referents unless the context clearly dictates otherwise. By way of example, "an edge barrier" refers to one or more than one edge barrier.

[0105] "About" as used herein referring to a measurable value such as a parameter, an amount, a temporal duration, and the like, is meant to encompass variations of + / -20% or less, preferably + / -10% or less, more preferably + / -5% or less, even more preferably + / -!% or variations are appropriate to perform in the disclosed invention. However, it is to be understood that the value to which the modifier "about" refers is itself also specifically disclosed.

[0106] "Absorbent article", "absorbent garment", "absorbent product", "absorbing article", "absorbing garment", "absorbing product" and the like as used herein are used interchangeably and refer to devices that absorb and contain bodily exudates, and more specifically, refers to devices that are placed against or in proximity to the body of the wearer to absorb and contain the various liquids discharged from the body. Absorbent articles include but are not limited to feminine hygiene garments, baby diapers and pants, adult incontinence garments, various diaper and pants holders, liners, towels, absorbent inserts and the like.

[0107] "Absorbent core" as used herein refers to a three-dimensional part of the absorbent structure, comprising liquid- absorbing material, useful to permanently absorb and / or retain bodily exudates. "Absorbent component" as used herein refers to a structural constituent of an absorbent article, e.g., a piece of an absorbent core, such as one of multiple pieces in a multi-piece absorbent core. "Absorbent element" as used herein refers to a part of a functional constituent of an absorbent structure, e.g., an acquisition layer, a dispersion layer, core layer or a release structure formed of amaterial or materials having particular liquid handling characteristics suitable for the specific function.

[0108] "Absorbent fibrous polymer material" as used herein refers to an absorbent polymer material which is in threadlike from such as fibers, filaments, and the like so as to be less flowable in the dry state than particulates.

[0109] "Absorbent insert" as used herein refers to a device adapted for insertion into an "Absorbent layer" as used herein refers to a term referring to a discrete, identifiable sheet-like or web-like element of an absorbent article which may remain detached and relatively movable with respect to another such element or may be attached or joined so as to remain permanently associated with another such element. Each absorbent layer may itself include a laminate or combination of several layers, sheets and / or webs of similar or diverse compositions.

[0110] "Absorbent polymer material", "absorbent gelling material", "AGM", "superabsorbent", "superabsorbent material", "superabsorbent polymer", "SAP" and the like as used herein are used interchangeably and refer to any suitable particulate (e.g., flaked, particulate, granular, or powdered) or fibrous cross linked polymeric materials that can absorb at least 5 times and preferably at least about 10 times or more its weight of an aqueous 0.9% saline solution as measured using the Centrifuge Retention Capacity test (EDANA 441.2-01).

[0111] "Absorbent polymer material area" as used herein refers to the area of the absorbent structure wherein adjacent layers are separated by a multiplicity of absorbent polymer material. Incidental contact areas between these adjacent layers within the absorbent particulate polymer material area may be intentional (e.g bond area's) or unintentional (e.g. manufacturing artifacts).

[0112] "Absorbent particulate polymer material" as used herein refers to an absorbent polymer material which is in particulate form such as powders, granules, flakes and the like so as to be flowable in the dry state.

[0113] "Absorption" as used herein refers to the process by which a liquid is taken up within a material.

[0114] "Absorption rate" as used herein refers to the rate of absorption of liquid, i.e. the amount of liquid which is absorbed per unit of time, typically by an absorbent component, element and / or absorbent layer of the absorbent article, structure and / or core."Acquisition layer", "acquisition region", "acquisition surface" or "acquisition material" and the like as used herein refer to the layer overlying the absorbent core having a faster liquid uptake and / or distribution capability.

[0115] "Absorbency" is the ability of a material to take up fluids by various means including capillary, osmotic, solvent, chemical and / or other action.

[0116] "Adult incontinence garment" as used herein refers to absorbent articles intended to be worn by incontinent adults, for absorbing and containing bodily exudates.

[0117] "Adhesion" as used herein refers to the force that holds different materials together at their interface.

[0118] "Adhesive" as used herein refers to a material, which may or may not be flowable in solution or when heated, that is used to bond materials together.

[0119] "Adsorption" as used herein refers to the process by which a liquid is taken up by the surface of a material.

[0120] "Airlaying" as used herein refers to forming a web by dispersing fibers or particles in an air stream and condensing them from the air stream onto a moving screen by means of a pressure and / or vacuum; a web of fibers produced by airlaying is herein referred to an "airlaid"; an airlaid web bonded by one or more techniques to provide fabric integrity is herein referred to an "airlaid nonwoven".

[0121] "Apparent density", "density" as used herein refers to the basis weight of the sample divided by the caliper with appropriate unit conversions incorporated therein. Apparent density used herein has the unit g / cm3.

[0122] "Attach", "attached" and "attachment" as used herein are synonymous with their counterparts of the terms "fasten", "affix", "secure", "bind", "join" and "link".

[0123] "Baby diaper" as used herein refers to absorbent articles intended to be worn by children, for absorbing and containing bodily exudates which the user draws up between the legs and fastens about the waist of the wearer."Baby pants" as used herein refers to absorbent articles marketed for use in transitioning children from diapers to underwear intended to cover the lower torso of children, so as to absorb and contain body exudates which article is generally configured like a panty garment and manufactured with a completed waist encircling portion, thereby eliminating the need for the user to fasten the article about the waist of the wearer.

[0124] "Back region" as used herein refers to the portion of an absorbent article or part thereof that is intended to be positioned proximate the back of a wearer.

[0125] "Backing" as used herein refers to a web or other material that supports and reinforces the back of a product.

[0126] "Basis weight" is the weight per unit area of a sample reported in grams per square meter, g / m2 or gsm.

[0127] "Bodily exudates", "body exudates", "bodily fluids", "body fluids", "bodily discharges", "body discharges", "fluid(s)", " liquid(s)", "fluid(s) and liquid(s) and the like as used herein are used interchangeably and refer to, but are not limited to urine, blood, vaginal discharges, breast milk, sweats and fecal matter.

[0128] "Binder", "adhesive", "glue", "resins", "plastics" and the like as used herein are used interchangeably and refer to substances, generally in a solid form (e.g. powder, film, fiber) or as a foam, or in a liquid form (e .g. emulsion, dispersion, solution) used for example by way of impregnation, spraying, printing, foam application and the like used for attaching or bonding functional and / or structural components, elements and materials, for example including heat and / or pressure sensitive adhesives, hot-melts, heat activated adhesives, thermoplastic materials, chemical activated adhesives / solvents, curable materials and the like.

[0129] "Bond strength" as used herein refers to the amount of adhesion between bonded surfaces. It is a measure of the stress required to separate a layer of material from the base to which it is bonded. "Capillary action", "capillarity", or "capillary motion" and the like as used herein are used to refer to the phenomena of the flow of liquid through porous media.

[0130] "Chassis" as used herein refers to a foundational constituent of an absorbent article upon which the remainder of the structure of the article is built up or overlaid, e.g., in a diaper, the structuralelements that give the diaper the form of briefs or pants when configured for wearing, such as a backsheet, a topsheet, or a combination of a topsheet and a backsheet.

[0131] "Cellulose fibers" as used herein refers to naturally occurring fibers based on cellulose, such as, for example cotton, linen, etc.; wood pulp fibers are one example of cellulose fibers; man-made fibers derived from cellulose, such as regenerated cellulose (rayon), or partially or fully acetylated cellulose derivatives (e.g. cellulose acetate or triacetate) are also considered as cellulose fibers.

[0132] "Cluster" or the like as used herein refers to an agglomeration of particles and / or fibers.

[0133] "Chemically stiffened fibers", chemically modified fibers", "chemically cross-linked fibers", "curly fibers" and the like as used herein are used interchangeably and refer to any fibers which have been stiffened by chemical means to increase stiffness of the fibers under both dry and aqueous conditions, for example by way of addition of chemical stiffening agents (e.g. by coating, impregnating, etc.), altering the chemical structure of the fibers themselves (e.g. by cross-linking polymer chains, etc.) and the like.

[0134] "Cohesion" as used herein refers to the resistance of similar materials to be separated from each other.

[0135] "Compartment" as used herein refers to chambers, cavities, pockets and the like.

[0136] "Comprise," "comprising," and "comprises" and "comprised of" as used herein are synonymous with "include", "including", "includes" or "contain", "containing", "contains" and are inclusive or open-ended terms that specify the presence of what follows e.g. a component and do not exclude or preclude the presence of additional, non-recited components, features, elements, members, steps, known in the art or disclosed therein.

[0137] "Coverstock" as used herein refers to a lightweight non-woven material used to contain and conceal an underlying absorbent core material; examples are the facing layer or materials that cover the absorbent cores of feminine hygiene garment s, baby diapers and pants and adult incontinence garments.

[0138] "Crotch region" of an absorbent article as used herein refers to about 50% of the absorbent article's total length (i.e., in the y-dimension), where the crotch point is located in the longitudinal center of the crotch region. That is, the crotch region is determined by first locating the crotch point of theabsorbent article, and then measuring forward and backward a distance of 25% of the absorbent article's total length.

[0139] "Cross direction (CD)", "lateral" or "transverse" and the like as used herein are used interchangeably and refer to a direction which is orthogonal to the longitudinal direction and includes directions within ±45° of the transversal direction.

[0140] "Curing" as used herein refers to a process by which resins, binders or plastics are set into or onto fabrics, usually by heating, to cause them to stay in place; the setting may occur by removing solvent or by cross-linking so as to make them in soluble.

[0141] "Diaper", "conventional diaper", "diaper-like", "diaper-like garment" and the like as used herein are used interchangeably and refer to disposable absorbent articles, which typically include a front waist portion and a back waist portion which may be releasable connected about the hips of the wearer during use by conventional fasteners such as adhesive tape fasteners or hook and loop type fasteners. In use, the article is positioned between the legs of the wearer and the fasteners are releasable attached to secure the back waist portion to the front waist portion of the diaper, thereby securing the diaper about the waist of the wearer. The front waist portion and a back waist portion are connected by relatively non-stretchable or stretchable members (the term "stretchable" as used herein refers to materials that are extensible when forces are applied to the material, and offer some resistance to extension). Hence, such articles are generally not configured to be pulled up or down over the hips of the wearer when the fasteners are attached.

[0142] "Dispersion layer", "dispersion region", "dispersion surface" or "dispersion material" and the like as used herein refer to the layer overlying the absorbent core having a faster liquid uptake and dispersion capability.

[0143] "Disposable" is used herein to describe articles that are generally not intended to be laundered or otherwise restored or reused (i.e., they are intended to be discarded after a single use and, preferably, to be recycled, composted or otherwise disposed of in an environmentally compatible manner).

[0144] "Drylaying" as used herein refers to a process for making a nonwoven web from dry fiber; these terms apply to the formation of carded webs, as well as to the air laying formation of random webs; a web of fibers produced by drylaying is herein referred to as a "drylaid"; a drylaid web bonded by one or more techniques to provide fabric integrity is herein referred to a "drylaid nonwoven"."Dry strength" as used herein refers to the strength of a joint determined in dry state conditions, immediately after drying under specified conditions or after a period of conditioning in the standard laboratory atmosphere.

[0145] "Essentially cellulose free", “substantially fluffless” or "little to no cellulose fibers" as used herein refers to an absorbent article, structure, core component and / or element containing less than 20% by weight cellulosic fibers, less than 10% cellulosic fibers, less than 5% cellulosic fibers, no cellulosic fibers, or no more than an immaterial amount of cellulosic fibers which do not materially affect the thinness, flexibility or absorbency thereof.

[0146] "Essentially fluffless" or "little to no fluff pulp" as used herein refers to an absorbent article, structure, core, component and / or element containing less than 20% by weight fluff pulp, less than 10% fluff pulp, less than 5% fluff pulp, no fluff pulp, or no more than an immaterial amount of fluff pulp which do not materially affect the thinness, flexibility or absorbency thereof.

[0147] "Fabric" as used herein refers to a sheet structure made from fibers, filaments and / or yarns.

[0148] "Feminine hygiene garments" as used herein refer to absorbent hygiene articles intended to be worn by woman, for absorbing and containing body exudates.

[0149] "Fiber" as used herein refers to the basic threadlike structure from which nonwovens, yarns and textiles are made. It differs from a particle by having a length at least 4 times its width; "Natural fibers" are either of animal (wool, silk), vegetable (cotton, flax, jute) or mineral (asbestos) origin, while "Man-made fibers" may be either polymers synthesized from chemical compounds (polyester, polypropylene, nylon, acrylic etc.) or modified natural polymers (rayon, acetate) or mineral (glass). "Fiber" and "filament" are used interchangeably.

[0150] "Fluff pulp" or "Pulp fluff" as used herein refers to wood pulp specially prepared to be drylaid. The fibers can be either natural or synthetic or a combination thereof.

[0151] "Front region" as used herein refers to the portion of an absorbent article or part thereof that is intended to be positioned proximate the front of a wearer.

[0152] "Garment facing layer" as used herein refers to elements of the chassis that form the outer surface of the absorbent article, such as the backsheet, the side panels, the waist fasteners, and the like, when such elements are present."Heat activated adhesive" as used herein refers to a dry adhesive that is rendered tacky or fluid by application of heat or heat and pressure to the assembly.

[0153] "Heat sealing adhesive" as used herein refers to a thermoplastic adhesive which is melted between the adherent surfaces by heat application to one or both of the adjacent adherent surfaces.

[0154] "High loft" as used herein refers to general term of low density, thick or bulky fabrics.

[0155] "Hot-melt adhesive" as used herein refers to a solid material that melts quickly upon heating, then sets to a firm bond upon cooling; used for almost instantaneous bonding.

[0156] "Hydrophilic" as used herein refers to having an affinity for being wetted by water or for absorbing water.

[0157] "Hydrophobic" as used herein refers to lacking the affinity for being wetted by water or for absorbing water.

[0158] "Immobilization layer" as used herein refers to a layer able to be applied to the absorbent polymer material or absorbent polymer material area with the intent to gather, bond and / or immobilize absorbent material and / or absorbent layer.

[0159] "Join", "joined" and "joining" as used herein refers to encompassing configurations wherein an element is directly secured to another element by affixing the element directly to the other element, as well as configurations wherein the element is indirectly secured to the other element by affixing the element to an intermediate member or members which in turn is or are affixed to the other element.

[0160] "Knitting" as used herein refers to the technique for interlocking loops of fibers with needles or similar devices.

[0161] "Layer" refers to identifiable components of the absorbent article, and any part referred to as a "layer" may actually comprise a laminate or combination of several sheets or webs of the requisite type of materials. As used herein, the term "layer" includes the terms "layers" and "layered.""Upper" refers to the layer of the absorbent article which is nearest to and / or faces the wearer facing layer; conversely, the term "lower" refers to the layer of the absorbent article which is nearest to and / or faces the garment facing layer. "Layer" is three dimensional structure with a x dimension width, y dimension length, and z-dimensions thickness or caliper, said x-y dimensions being substantially in the plane of the article, however it should be noted that the various members, layers, and structures of absorbent articles according to the present invention may or may not be generally planar in nature, and may be shaped or profiled in any desired configuration .

[0162] "Machine direction (MD)", "longitudinal" and the like as used herein are used interchangeably and refer to a direction running parallel to the maximum linear dimension of the structure and includes directions within ±45° of the longitudinal direction.

[0163] "Major surface" as used herein refers to a term used to describe the surfaces of greatest extent of a generally planar or sheet-like structural element and to distinguish these surfaces from the minor surfaces of the end edges and the side edges, i.e., in an element having a length, a width, and a thickness, the thickness being the smallest of the three dimensions, the major surfaces are those defined by the length and the width and thus having the greatest extent.

[0164] "Mass flow" as used herein refers to the flow of a liquid from one absorbent element or component to another absorbent element or component by channel flow action.

[0165] "Mechanical bonding" as used herein refers to a method of bonding fibers by entangling them. This can be achieved by needling, stitching with fibers or by the use of high-pressure air or water jets and the like.

[0166] "Nonwoven" as used herein refers to manufactured sheet, web or batt of directionally or randomly orientated fibers, bonded by friction, and / or cohesion and / or adhesion, excluding paper and products which are woven, knitted, tufted, stitch-bonded incorporating binding yarns or filaments, or felted by wet-milling, whether or not additionally needled. The fibers may be of natural or manmade origin and may be staple or continuous filaments or be formed in situ. Commercially available fibers have diameters ranging from less than about 0.001 mm to more than about 0.2 mm and they come in several different forms: short fibers (known as staple, or chopped), continuous single fibers (filaments or monofilaments), untwisted bundles of continuous filaments (tow), and twisted bundles of continuous filaments (yarn). Nonwoven fabrics can be formed by many processes such as melt blowing, spun bonding, solvent spinning, electrospinning, and carding. The basis weight of nonwoven fabrics is usually expressed in grams per square meter (gsm)."Pant", "training pant", "closed diapers", "prefastened diapers", "pull-on diapers" and "diaperpants" and the like as used herein are used interchangeably and refer to absorbent articles which are typically applied to the wearer by first leading the feet into the respective leg openings and subsequently pulling the pants from the feet to waist area over the hips and buttocks of the wearer and which are capable of being pulled up or down over the hips of the wearer. Typically, such articles may include a front waist portion and a back waist portion which may be connected about the hips of the wearer by integral or releasable members. A pant may be preformed by any suitable technique including, but not limited to, joining together portions of the article using refastenable and / or non-refastenable bonds (e.g., seam, weld, adhesive, cohesive bond, fastener, etc.). A pant may be preformed anywhere along the circumference of the article (e.g., side fastened, front waist fastened).

[0167] "Polymer" as used herein refers to but is not limited to, homopolymers, copolymers, such as for example, block, graft, random and alternating copolymers, terpolymers, etc. and blends and modifications thereof. Unless otherwise specifically limited, the term "polymer" includes all possible spatial configurations of the molecule and include, but are not limited to isotactic, syndiotactic and random symmetries.

[0168] "Rear" as used herein refers to the portion of an absorbent article or part thereof that is intended to be positioned proximate the back of the wearer.

[0169] "Release structure", "release region", "release surface" or "release material" and the like as used herein are used interchangeably and refer to a structure in fluid communication with the absorbent core having a larger relative liquid absorption capacity and / or rate allowing it to quickly take up, temporarily hold and releasing liquids.

[0170] "Resin" as used herein refers to a solid or semisolid polymeric material.

[0171] "Thermobonding" as used herein refers to a method of bonding fibers by the use of heat and / or high-pressure.

[0172] "Thermoplastic" as used herein refers to polymeric materials that have a melting temperature and can flow or be formed into desired shapes on the application of heat at or below the melting point.

[0173] "Ultrasonic" as used herein refers to the use of high frequency sound to generate localized heat through vibration thereby causing thermoplastic fibers to bond to one another."Water-absorbing", "liquid-absorbing", "absorbent", "absorbing" and the like as used herein are used interchangeably and refer to compounds, materials, products that absorb at least water, but typically also other aqueous fluids and typically other parts of bodily exudates such as at least urine or blood.

[0174] "Wearer facing layer" as used herein refers to elements of the chassis that form the inner surface of the absorbent article, such as the topsheet, the leg cuffs, and the side panels, etc., when such elements are present.

[0175] "Weaving" as used herein refers to the process of interlacing two or more sets of yarns at right angles to form a fabric; a web of fibers produced by weaving is herein referred to as a "woven".

[0176] "Web material" as used herein refers to an essentially endless material in one direction, i.e. the longitudinal extension or the length, or the x- direction in Cartesian coordinates relative to the web material. Included in this term is an essentially unlimited sequence of pieces cut or otherwise separated from an essentially endless material. Often, though not necessarily, the web materials will have a thickness dimension (i.e. the z-direction) which is significantly smaller than the longitudinal extension (i.e. in x-direction). Typically, the width of web materials (they-direction) will be significantly larger than the thickness, but less than the length. Often, though not necessarily, the thickness and the width of such materials is essentially constant along the length of the web. Without intending any limitation, such web materials may be cellulosic fiber materials, tissues, woven or nonwoven materials and the like. Typically, though not necessarily, web materials are supplied in roll form, or on spools, or in a folded state in boxes. The individual deliveries may then be spliced together to form the essentially endless structure. A web material may be composed of several web materials, such as multilayer non-woven, coated tissues, nonwoven / film laminates. Web materials may comprise other materials, such as added binding material, particles, hydrophilizing agents and the like.

[0177] "Wet burst strength" is a measure of a layer's ability to absorb energy, when wet and subjected to deformation normal to the plane of the web.

[0178] "Wet strength" as used herein refers to the strength of a joint determined immediately after removal from a liquid in which it has been immersed under specified conditions of time, temperature and pressure. The term is commonly used in the art to designate strength after immersion in water."Wetlaying" as used herein refers to the forming a web from an aqueous dispersion of fibers by applying modified paper making techniques; a web of fibers produced by wetlaying is herein referred to as a "wetlaid".

[0179] "Wood pulp" as used herein refers to cellulosic fibers used to make viscose rayon, paper and the absorbent cores of products such as feminine hygiene garments, baby diapers and pants and adult incontinence garments.

[0180] "X-y dimension" as used herein refers to the plane orthogonal to the thickness of the article, structure or element. The x- and y-dimensions correspond generally to the width and length, respectively, of the article, structure or element.

[0181] "Z-dimension" as used herein refers to the dimension orthogonal to the length and width of the article, structure or element. The z-dimension corresponds generally to the thickness of the article, structure or element.

Claims

CLAIMS1. An absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core which comprises absorbent material and which is positioned between the liquid pervious topsheet and the liquid impervious backsheet; said absorbent article having a first and second longitudinal edge and a first and second transverse edge; wherein the absorbent article comprises a waist pocket positioned near the first transverse edge, wherein the waist pocket comprisesa proximal transversal portion extending from a proximal transverse edge of the waist pocket, which is proximal to the first transverse edge, towards a distal transversal edge of the waist pocket opposite to the proximal transverse edge;a distal transversal portion extending from the distal transverse edge of the waist pocket towards the proximal transverse edge of the waist pocket; anda central transversal portion between the proximal transversal portion and the distal transversal portion and comprising a transversal center line of the waist pocket;a first longitudinal side edge,a second longitudinal side edge,a first and second nonwoven layer; andat least one elastic material comprising elastic member positioned between the first and second nonwoven layer and extending substantially transversally between the first longitudinal side edge and the second longitudinal side edge,wherein the proximal transversal portion is at least partially attached to a body facing side of the absorbent article and the distal transversal portion is at least partially unattached to the body facing side of the absorbent article, such that a waist pocket opening is formed between the distal transversal portion and the topsheet; andwherein the at least one elastic member of the waist pocket is positioned such that a central grammage of elastic material in the central transversal portion is lower than a distal grammage of elastic material in the distal transversal portion.

2. The absorbent article according to claim 1, wherein the at least one elastic member of the waist pocket is positioned such that the central grammage of elastic material in the central transversal portion is lower than a proximal grammage of elastic material in the proximal transversal portion.

3. The absorbent article according to claim 1 or 2, wherein the distal transversal portion comprises a first distal transversal sub-portion extending from the distal transverse edge of thewaist pocket and a second distal transversal sub-portion between the first transversal subportion and the central transversal portion, and wherein a first distal grammage of elastic material in the first distal transversal sub-portion is higher than a second distal grammage of elastic material in the second distal transversal sub-portion.

4. The absorbent article according to any one of the preceding claims, wherein the proximal transversal portion comprises a first proximal transversal sub-portion extending from the proximal transverse edge of the waist pocket and a second proximal transversal sub-portion between the first proximal transversal sub-portion and the central transversal portion, and wherein a first grammage of elastic material in the first proximal transversal sub-portion is higher than a second grammage of elastic material in the second proximal transversal subportion.

5. The absorbent article according to any one of the preceding claims wherein each one of the proximal transversal portion and the distal transversal portion has a surface area which is substantially double of a surface area of the central transversal portion.

6. The absorbent article according to any one of the preceding claims 3 -5, wherein a surface area of each one of the first distal transversal sub-portion, second distal transversal sub-portion, first proximal transversal sub-portion, second proximal transversal sub-portion, and central transversal portion is substantially the same.

7. The absorbent article according to any one of the preceding claims, wherein the absorbent article comprises a pair of longitudinally extending leg cuffs, wherein the first longitudinal side edge and the second longitudinal side edge of the waist pocket are adhesively attached to the leg cuffs.

8. The absorbent article according to any one of the preceding claims, wherein the proximal transverse edge of the waist pocket is adhesively attached to the topsheet.

9. The absorbent article according to any one of the preceding claims, wherein the first and second nonwoven layer consist of the same nonwoven material.

10. The absorbent article according to any one of the preceding claims, wherein the first and second nonwoven layer consist of an at least partially folded nonwoven sheet.

11. The absorbent article according to the preceding claim, wherein the at least partially folded nonwoven sheet is folded according to a C-fold or L-fold configuration.

12. The absorbent article according to claim 10 or 11, wherein a free portion of the at least partially folded nonwoven is facing the body facing side of the absorbent article.

13. The absorbent article according to any one of the preceding claims, wherein the at least one elastic member is adhesively attached between the first and second nonwoven layer.

14. The absorbent article according to any one of the preceding claims, wherein the first and / or second nonwoven layer comprises spunbond nonwoven, meltblown nonwoven, spunlaced nonwoven or combination thereof.

15. The absorbent article according to the preceding claim, wherein the first and / or second nonwoven layer is a spunbond-meltblown-spunbond, SMS, nonwoven.

16. The absorbent article according to the preceding claims, wherein the first and / or second non woven layer has a grammage of between 4 - 15 gsm, preferably between 6 - 12 gsm, most preferably between 8 - 10 gsm.

17. The absorbent article according to any one of the preceding claims, wherein the first and / or second nonwoven layer comprise, preferably consist of, any one of polypropylene, polylactic acid, and biobased polyethylene.

18. The absorbent article according to the preceding claim, wherein the first and the second nonwoven layer consist of polypropylene.

19. The absorbent article according to any one of the preceding claims, wherein the at least one elastic member comprises a plurality of elastic members which are mutually positioned at a distance of between 4 and 10 mm of each other.

20. The absorbent article according to any one of the preceding claims, wherein the central transversal portion is free of elastic members.

21. The absorbent article according to any one of the preceding claims, wherein the proximal transversal portion is free of elastic members.

22. The absorbent article according to any one of the preceding claims, wherein the first transverse edge is a front transverse edge of the absorbent article, and wherein the waist pocket is a front waist pocket.

23. The absorbent article according to any one of the preceding claims 1 - 21, wherein the first transverse edge is a rear transverse edge of the absorbent article, and wherein the waist pocket is a rear waist pocket.

24. The absorbent article according to any one of the preceding claims 1 -21, wherein the absorbent article comprises a second waist pocket positioned near the second transverse edge.

25. The absorbent article according to the preceding claims, wherein the second waist pocket comprisesa proximal transversal portion extending from a proximal transverse edge of the second waist pocket, which is proximal to the second transverse edge, towards a distal transversal edge of the second waist pocket opposite to the proximal transverse edge;a distal transversal portion extending from the distal transverse edge of the second waist pocket towards the proximal transverse edge of the second waist pocket; anda central transversal portion between the proximal transversal portion and the distal transversal portion and comprising a transversal center line of the second waist pocket;a first longitudinal side edge,a second longitudinal side edge,a first and second nonwoven layer; andat least one elastic material comprising elastic member positioned between the first and second nonwoven layer and extending substantially transversally between the first longitudinal side edge and the second longitudinal side edge,wherein the proximal transversal portion is at least partially attached to the body facing side of the absorbent article and the distal transversal portion is at least partially unattached to the body facing side of the absorbent article, such that a second waist pocket opening is formed between the distal transversal portion of the second waist pocket and the topsheet; andwherein the at least one elastic member of the second waist pocket is positioned such that a central grammage of elastic material in the central transversal portion is lower than a distal grammage of elastic material in the distal transversal portion.

26. The absorbent article according to any one of the preceding claims 24 - 25, wherein the at least one elastic member of the second waist pocket is positioned such that the central grammage of elastic material in the central transversal portion is lower than a proximal grammage of elastic material in the proximal transversal portion.

27. The absorbent article according to any one of the preceding claims 24 - 26, wherein the distal transversal portion comprises a first distal transversal sub-portion extending from the distaltransverse edge of the second waist pocket and a second distal transversal sub-portion between the first transversal sub-portion and the central transversal portion, and wherein a first distal grammage of elastic material in the first distal transversal sub-portion is higher than a second distal grammage of elastic material in the second distal transversal sub-portion.

28. The absorbent article according to any one of the preceding claims 24 - 27, wherein the proximal transversal portion comprises a first proximal transversal sub-portion extending from the proximal transverse edge of the second waist pocket and a second proximal transversal sub-portion between the first proximal transversal sub-portion and the central transversal portion, and wherein a first grammage of elastic material in the first proximal transversal subportion is higher than a second grammage of elastic material in the second proximal transversal sub-portion.

29. The absorbent article according to any one of the preceding claims, wherein the at least one elastic member comprises at least one elastic strand.

30. The absorbent article according to any one of the preceding claims, wherein an amount of elastic members in the central transversal portion is lower than an amount of elastic members in the proximal transversal portion.

31. The absorbent article according to any one of the preceding claims, wherein an amount of elastic elements in the first distal transversal sub-portion is higher than an amount of elastic elements in the second distal transversal sub-portion.

32. The absorbent article according to any one of the preceding claims, wherein an amount of elastic elements in the first proximal transversal sub-portion is higher than an amount of elastic elements in the second proximal transversal sub-portion.

33. The absorbent article according to any one of the preceding claims, wherein the waist pocket is provided as a separate patch which is partially attached to the body facing side of the absorbent article.

34. The absorbent article according to the preceding claim, wherein the separate patch is substantially rectangular shaped.

35. The absorbent article according to any one of the preceding claim, wherein the absorbent core is provided with at least one channel area which is substantially free of absorbent material.

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