Washable and reusable absorbent underwear

Abstract

The present disclosure relates to a washable and reusable absorbent underwear (1) comprising an absorbent assembly (10) comprising a top layer (15) facing the wearer, a moisture barrier (12) and one or more intermediate layers (11, 16) wherein the absorbent assembly (10) defines a circumferential outer edge (21) and a circumferential rim (30) extending along the circumferential outer edge (21). The circumferential rim (30) comprises one or more sealed rim portions (30a, 30b), each sealed rim portion (30a, 30b) comprising a fluid seal (20a, 20b) providing a continuous seal between the wearer-facing top layer (15) and the moisture barrier (12) so as to hinder fluid leakage from a region inside the circumferential rim (30) via the sealed rim portions (30a, 30b) to outside of the circumferential outer rim (21); and the circumferential rim (30) further comprises one or more unsealed rim portions (30c, 30d).

Description

Technical Field

[0001] The present disclosure relates to a washable and reusable absorbent undergarment. Background Art

[0002] Absorbent articles, such as absorbent underwear, are worn for the purpose of absorbing body fluids, such as urine and vaginal fluids. Washable and reusable absorbent underwear includes a fabric of woven or knitted material. Conventionally, such washable and reusable absorbent underwear includes an integral absorbent assembly that is disposed toward the crotch region of the wearer when the underwear is worn. After use, the absorbent underwear is washed or cleaned before reuse.

[0003] Reusable absorbent underwear is available for different volumes of body fluids, from low to moderate or heavy.

[0004] There is a need for reusable absorbent undergarments, and those suitable for moderate to heavy body fluid flows, that are comfortable to wear and provide a good fit and are aesthetically pleasing. It is therefore desirable to provide reusable absorbent undergarments suitable for different body fluid flows, wherein the required capacity for absorbing body fluids is provided without unnecessary bulk and / or aesthetically disadvantageous effects, such as undesirable creases and / or wrinkles. Summary of the invention

[0005] It is an object of the present invention to meet one or more of the above needs, or to provide a useful alternative.

[0006] This object is met by a washable and reusable absorbent underwear according to claim 1 .

[0007] Thus, a washable and reusable underwear is provided, the underwear comprising one or more fabric panels forming a front side and a back side, the front side and the back side being joined so that the underwear forms a waist opening and a pair of leg openings, wherein the crotch region extends between the leg openings. The central longitudinal axis of the underwear extends along the one or more fabric panels of the underwear in a direction from the back side and toward the front side, and the transverse axis of the underwear extends perpendicularly to the central longitudinal axis along the one or more fabric panels and divides the underwear into a front side and a back side.

[0008] In view of the above, the central longitudinal axis will be centrally located as seen over the total transverse width of the underwear. The transverse axis serves to divide the underwear into a front side and a back side. The location of the transverse axis (i.e., the division between the front side and the back side) can be determined by laying out the complete underwear with the back of the underwear toward the support surface and the front of the underwear toward the observer. The waist edge of the front of the underwear is to be superimposed on the waist edge of the back of the underwear. When the underwear is laid out in this manner, the front side of the underwear faces the observer, the back side of the underwear faces the support surface, and the transverse axis extends between them, i.e., along the fold between the front side and the back side formed in the crotch area of ​​the underwear. In this way, the transverse axis can be a central transverse axis and is centrally located as seen over the total longitudinal length of the underwear.

[0009] The underwear further comprises an absorbent assembly arranged in at least a portion of the crotch region and comprising a top layer facing the wearer, a moisture barrier and one or more intermediate layers superposed between the top layer and the moisture barrier along a height axis perpendicular to the longitudinal axis and the transverse axis.

[0010] The absorbent assembly may be permanently attached to one or more of the fabric panels. For example, the absorbent assembly may be permanently attached to one or more of the fabric panels by one or more mechanical joints, such as, for example, seams.

[0011] The top layer is arranged to face the skin of the user when the underwear is in use.

[0012] The moisture barrier prevents liquid from leaking through the absorbent assembly and may, for example, be in the form of a liquid-impermeable barrier layer. However, in other variations, the moisture barrier may be a liquid-impermeable coating, which is provided, for example, on the garment-facing side of the intermediate layer, or alternatively on the wearer-facing side of the fabric panel beneath the one or more intermediate layers.

[0013] The intermediate layer or layers may, for example, be one or more absorbent layers or auxiliary layers such as wicking layers.

[0014] Furthermore, the absorbent assembly defines a peripheral outer edge.For example, at least the top layer and the moisture barrier may extend in a plane spanned by the transverse axis and the longitudinal axis so as to terminate substantially at the peripheral outer edge of the absorbent assembly.

[0015] Furthermore, the circumferential edge of the absorbent assembly extends along the circumferential outer edge. The circumferential edge constitutes an area in a plane spanned by the longitudinal axis and the transverse axis and extends along the entire circumferential outer edge of the absorbent assembly. In other words, the circumferential edge forms a closed frame along the circumferential outer edge of the absorbent assembly.

[0016] As such, the peripheral edge can extend between the peripheral outer edge of the absorbent assembly and an imaginary inner edge boundary.The imaginary inner edge boundary can be consistent in shape with the peripheral outer edge of the absorbent assembly and concentric with the peripheral outer edge.

[0017] As proposed herein, the circumferential edge includes one or more sealed edge portions, each sealed edge portion including a fluid seal that provides a continuous seal along the sealed edge portion and between the top layer facing the wearer and the moisture barrier so as to hinder fluid leakage from the area inside the circumferential edge through the sealed edge portion to the outside of the circumferential outer edge.

[0018] Thereby, in each sealed rim, the fluid seal provides a continuous seal as seen in one or more directions along the circumferential direction and along the sealed rim.

[0019] As such, each sealed rim may be arranged to impede fluid leakage from an area inside the circumferential rim via the sealed rim to outside the circumferential outer edge.

[0020] Furthermore, the circumferential rim includes one or more unsealed rim portions.

[0021] In this way, the absorbent assembly is arranged so as not to hinder fluid leakage from the area inside the peripheral edge via the one or more unsealed edge portions to the outside of the peripheral outer edge. Thus, each unsealed edge portion may be free of a fluid seal.

[0022] As will be appreciated from the above, the arrangement of the fluid seal in the sealed rim portion of the peripheral edge is thereby effective in hindering fluid leakage from the area inside the peripheral edge to the outside of the absorbent assembly. As such, the one or more sealed rim portions will be effective in hindering fluid leakage from a fluid insult (typically occurring in a fluid insult area of ​​the absorbent assembly located inside the peripheral edge) via the sealed rim portion.

[0023] However, it has been found that the provision of a fluid seal increases the stiffness of the absorbent assembly at the location of the fluid seal. Thus, while effective in preventing fluid leakage, any fluid seal may provide an undesirable bulky or less body-shaping fit to the underwear.

[0024] By combining one or more sealed edges including a fluid seal with one or more unsealed edges, it has been found possible to provide adequate resistance to fluid leakage combined with a better fit. For example, undesirable creases or wrinkles visible from the front or back of the underwear when worn by the user can be reduced or avoided.

[0025] In this way, the sealed edge can be selected as the edge of the absorbent assembly that is most susceptible to leakage. This may be, for example, the case where the edge is relatively close to the insult area of ​​the absorbent assembly and / or the edge is subject to movement or pressure during use.

[0026] The unsealed edge may be selected as an edge of the absorbent assembly that is less prone to leakage. This may be the case, for example, where the edge is relatively far from the insult area of ​​the absorbent assembly. In this way, fluid from a fluid insult may be distributed over a relatively large volume of the absorbent assembly before reaching the edge, meaning that little or even no fluid will reach the edge when the absorbent article is in use. Furthermore, the unsealed edge may be selected taking into account the comfort and fit of the underwear.

[0027] By the term "rim" as used herein (sealed or unsealed) it is understood that a portion of a circumferential rim extends along a circumferential direction of the circumferential rim.

[0028] By the term "fluid seal" as used herein, it is meant a fluid seal that provides a continuous seal along the edge between the top layer facing the wearer and the moisture barrier. In this way, the fluid seal provides a continuous seal in the plane spanned by the longitudinal axis and the transverse axis and between the top layer facing the wearer and the moisture barrier. For example, the fluid seal may extend for at least 5 mm, such as at least 10 mm, in any direction in the plane spanned by the longitudinal axis and the transverse axis. For example, the fluid seal may extend for at least 5 mm, such as at least 10 mm, along the circumferential edge.

[0029] Thus, the sealed rim may have a continuous extension along the circumferential edge of at least 5 mm, such as at least 10 mm or at least 20 mm.

[0030] Similarly, the unsealed rim may have a continuous extension along the circumferential edge of at least 5 mm, such as at least 10 mm or at least 20 mm.

[0031] In this way, a washable and reusable underwear can be provided which is suitable for absorbing body fluid flows while at the same time providing a satisfactory fit to the user's body and having an appearance similar to conventional underwear.

[0032] Optionally, the absorbent assembly itself is free of fluid seals outside the one or more sealed borders.

[0033] For example, in the one or more sealed rims, the fluid seal(s) may be arranged to substantially coincide with the peripheral outer edge of the absorbent assembly.

[0034] For example, in the one or more sealed rims, the fluid seal(s) may be arranged to engage the circumferential outer edge of the top layer facing the wearer with the circumferential outer edge of the moisture barrier. For example, the fluid seal(s) may extend substantially along the circumferential outer edges of the top layer and the moisture barrier.

[0035] Optionally, in the one or more sealed rims, the fluid seal (s) may be arranged to extend along the circumferential outer edge and at a distance from the circumferential outer edge. For example, the fluid seal (s) may be arranged to extend along the circumferential outer edge and at a constant distance from the circumferential outer edge, i.e. the fluid seal (s) has a shape that follows the contour of the circumferential outer edge.

[0036] In another example, the fluid seal(s) may be arranged to extend at a varying distance from the circumferential outer edge. Thus, the shape of the fluid seal(s) may deviate from the contour of the circumferential outer edge.

[0037] For example, the distance may be less than 5 mm. For example, the distance may be less than 2 mm, such as less than 1 mm.

[0038] Optionally, the one or more fluid seals include a fluid-tight joint. A fluid-tight joint is defined as a joint that fluid-tightly joins at least the top layer facing the wearer and the moisture barrier to prevent fluid from leaking through the fluid-tight joint. For example, each of the one or more fluid seals may include a fluid-tight joint.

[0039] Optionally, the wearer-facing top layer and the moisture barrier are directly joined by at least one of the fluid-tight joints. "Direct" joining in this context means that the fluid-tight joint joins the garment-facing side of the wearer-facing top layer and the wearer-facing side of the moisture barrier without any intermediate layer extending between the top layer and the moisture barrier at the location of the joint.

[0040] Direct engagement of the wearer-facing top layer and the moisture barrier means that the absorbent assembly can be relatively thin where the fluid-tight joint is located, thereby reducing the stiffness and bulk of the fluid-tight joint to achieve the benefit of the undergarment adapting more easily to the wearer's body shape and movements.

[0041] Alternatively, the wearer-facing top layer and the moisture barrier may be indirectly joined. When joined "indirectly", it is meant in this context that the wearer-facing top layer and the moisture barrier are joined by a joint at the location where one or more intermediate layers or other components are located between each other. For example, the garment-facing side of the wearer-facing top layer may be joined to an intermediate layer, which in turn is attached to the wearer-facing side of the moisture barrier.

[0042] Optionally, one or more of the wearer-facing top layer, the moisture barrier and the one or more intermediate layers may be joined by at least one of the fluid-tight joints.

[0043] Optionally, all of the wearer-facing top layer, the moisture barrier and the one or more intermediate layers are joined by at least one fluid-tight joint.

[0044] Optionally, the top layer facing the wearer and the moisture barrier can be directly joined by one or more non-fluid-tight joints. For example, at the location of the non-fluid-tight joint, i.e., in the unsealed edge portion, a particularly body-friendly fit can be achieved by using a non-fluid-tight joint that only joins the top layer and the moisture barrier.

[0045] For example, in some embodiments, in the one or more sealed edges, the wearer-facing top layer and the moisture barrier may be directly joined via one or more fluid-tight joints, and in the one or more unsealed edges, the wearer-facing top layer and the moisture barrier may be directly joined via one or more non-fluid-tight joints.

[0046] In other embodiments, in the one or more sealed edge portions, the wearer-facing top layer, one or more middle layers, and the moisture barrier may be joined by one or more fluid-tight joints, and in the one or more unsealed edge portions, the wearer-facing top layer and the moisture barrier may be directly joined by one or more non-fluid-tight joints.

[0047] A fluid tight joint can be achieved in a number of different ways.

[0048] For example, the fluid-tight joint can be achieved by sealingly joining the layers of the absorbent assembly without adding any sealing members. For example, the fluid-tight joint can be a fluid-tight adhesive joint, such as a hot melt adhesive joint, or a fluid-tight weld joint, such as a heat weld joint or an ultrasonic weld joint.

[0049] In other examples, the one or more fluid seals may include a fluid sealing member.For example, each of the one or more fluid seals may include a fluid sealing member.

[0050] For example, the fluid sealing member may comprise an elastic band.

[0051] For example, a fluid-tight joint can be achieved by sealingly joining the layers of the absorbent assembly together using a fluid-tight member. For example, the fluid-tight member can include an elastic band provided with an adhesive that provides an adhesive connection to the top layer facing the wearer and the moisture barrier.

[0052] In another example, the fluid-tight joint may include a mechanical joint, such as a seam, combined with a fluid-tight component.

[0053] For example, the fluid-tight joint may include a mechanical joint, such as a seam, which joins the wearer-facing top layer and the moisture barrier, optionally with any intermediate layers, in combination with a fluid-tight member, such as a belt, which is arranged to extend over the outer edges of the wearer-facing top layer, the moisture barrier and the optional intermediate layers.

[0054] In another example, the fluid sealing joint can include an adhesive joint, such as an adhesive, which is combined with a fluid sealing member (such as a tape) to join the wearer-facing top layer and the moisture barrier, optionally together with any intermediate layers, and the fluid sealing member is arranged to extend over the outer edges of the wearer-facing top layer, the moisture barrier, and the optional intermediate layers.

[0055] Additionally, the absorbent assembly may include one or more non-fluid tight joints.

[0056] As used herein, a "non-fluid tight joint" is defined as a joint that joins at least the wearer-facing top layer and the moisture barrier without preventing fluid from leaking through the non-fluid tight joint.

[0057] Optionally, the one or more unsealed rims include at least one non-fluid tight joint.For example, each of the one or more unsealed rims may include at least one non-fluid tight joint.

[0058] Optionally, a non-fluid tight joint or a plurality of non-fluid tight joints may be arranged to secure the absorbent assembly to at least one of one or more of the fabric panels.

[0059] For example, non-fluid tight joints may include mechanical joints such as seams.

[0060] As mentioned above, the sealed rim may be selected to be the rim that is most susceptible to leakage from a fluid insult when the article is worn.

[0061] As such, optionally, the one or more sealed rims may include a pair of sealed side rims located opposite each other and on each side of the longitudinal axis.

[0062] Additionally, each sealed side edge portion may extend longitudinally along at least a portion of the crotch region of the undergarment.

[0063] As can be understood from the above, the sealed side edges themselves can have an extension along the transverse axis as well as along the longitudinal axis. The sealed side edges extending longitudinally along at least a portion of the crotch region of the underwear means that the sealed side edges have an extension at least along the longitudinal axis in at least a portion of the crotch region.

[0064] Depending on the size and model of the underwear, the longitudinal length of the crotch area can vary significantly.

[0065] Alternatively, the sealed side edges may have a longitudinal extension over the entire crotch region of the underwear. For example, the sealed side edges may have a longitudinal extension extending beyond the crotch region of the underwear towards the front and / or the back of the underwear. This variation may be particularly useful for underwear models with a relatively short crotch region, i.e., low leg cut models, such as boxer or shorts models.

[0066] Alternatively, the sealed side edges may have a longitudinal extension over only a portion of the crotch region of the underwear. For example, the sealed side edges may have a longitudinal extension over from 20% to 80% (e.g., over from 25% to 75%) of the crotch region. This variant may be particularly useful for underwear models with a relatively long crotch region (i.e., high leg cut models, such as rope or Brazilian models).

[0067] Optionally, in some variations, in each sealed side margin portion, at least a portion of the peripheral outer edge of the absorbent assembly follows the contour of the corresponding leg opening of the undergarment.

[0068] Optionally, in each sealed side margin portion, at least a portion of the peripheral outer edge of the absorbent assembly substantially coincides with the contour of the corresponding leg opening of the undergarment.

[0069] For example, when the sealed side margins have a longitudinal extension over a portion of the crotch region of the underwear as mentioned above, the peripheral outer edge of the absorbent assembly can substantially coincide with the contour of the corresponding leg opening in the entire portion of the crotch region.

[0070] Thus, the sealed side edge portion, which is the edge portion closest to the leg opening of the underwear, can be the sealed edge portion.

[0071] Thereby, these sealed side edges will extend over at least a portion of the longitudinal extension of the leg openings of the underwear.Alternatively, the sealed side edges may extend over the entire longitudinal extension of the leg openings of the underwear.

[0072] Optionally, each fluid seal in the sealed side rim may extend continuously over the longitudinal side seal length. In other words, the side seal length is the extension of the sealed side rim as seen along the longitudinal axis.

[0073] For example, the longitudinal side seal length may be at least 5 cm, such as at least 7 cm. For example, the longitudinal side seal length may be at least 10 cm.

[0074] For example, the longitudinal side seal length may be less than 45 cm, such as less than 35 cm.

[0075] As such, the longitudinal side seal length may for example be in the range from 5 to 45 cm, such as from 10 to 35 cm.

[0076] As such, the longitudinal side seal length may be selected so as to provide suitable protection against fluid leakage.

[0077] For example, the sealed side edge portions may be the only sealed edge portions of the underwear. That is, the circumferential edge does not contain a fluid seal outside the sealed side edge portions.

[0078] Optionally, the one or more unsealed edges include a front edge, wherein the peripheral outer edge of the absorbent assembly faces the front of the underwear. For example, the front edge may include a non-fluid-tight joint, such as a non-fluid-tight joint that joins the absorbent assembly to the fabric panel.

[0079] Like this, front edge portion can be free of fluid seal, and thereby can adapt to user's body shape and movement.In addition, when need not consider any fluid seal rigidity, can more freely choose the shape of the peripheral outer edge of absorbent assembly in front edge area.

[0080] Optionally, the one or more unsealed edges include a back edge, wherein the peripheral outer edge of the absorbent assembly faces the back of the underwear. For example, the back edge may include a non-fluid-tight joint, such as a non-fluid-tight joint that joins the absorbent assembly to the fabric panel.

[0081] Like this, back edge portion can be free of fluid seal, and thereby can be better adapted to user's body shape and movement.In addition, when need not consider the rigidity of any fluid seal, can more freely choose the shape of the peripheral outer edge of the absorbent assembly in the front edge area.

[0082] For example, the one or more unsealed edges may include a front edge and a back edge as outlined above.

[0083] For example, the front edge portion and the back edge portion may interconnect the side edges of the seal to form a complete circumferential edge.

[0084] Optionally, the circumferential rim is free of fluid seals outside the sealed side rim portions.

[0085] Optionally, the absorbent assembly is free of fluid seals outside of the sealed side margins.

[0086] Optionally, the peripheral edge forms a rear edge portion, which is the portion of the peripheral edge longitudinally positioned between the rearmost longitudinal ends of the sealed side edge portions and the rearmost end of the absorbent assembly.

[0087] Optionally, the rear edge comprises one or more unsealed edges.

[0088] An absorbent assembly having a circumferential edge forming a rear edge extending longitudinally from the rear longitudinal ends of the sealed side edge portions toward the back of the underwear allows for variations with an extended back side of the absorbent assembly, such as may be particularly suitable for underwear intended for nighttime use. By including such a rear edge portion with one or more unsealed edge portions, better fit and more versatility may be achieved when it comes to selecting the shape of the rear edge portion, as outlined above.

[0089] Optionally, the entire rear edge constitutes an unsealed edge. In this way, the rear edge does not contain a fluid seal.

[0090] Optionally, the top layer and the moisture barrier layer facing the wearer can extend beyond the one or more intermediate layers in at least a portion of the rear edge portion (e.g., in the entire rear edge portion). Like this, the rear edge portion can be relatively thin, and therefore can provide better fit for the user.

[0091] Optionally, the top layer facing the wearer and the moisture barrier can extend beyond the one or more intermediate layers in the entire portion of the absorbent assembly extending longitudinally along the rear edge. In other words, the one or more intermediate layers can extend no further than the sealed side edges in the direction toward the rear of the absorbent assembly. In this way, the rear of the absorbent assembly can be relatively thin and can therefore provide a better fit for the user.

[0092] The rear edge portion may have a rear edge length along the longitudinal axis.

[0093] The rear edge length of the rear edge portion can be, for example, at least 2 cm, for example, at least 4 cm or at least 10 cm. The rear edge length of the rear edge portion can optionally be adapted to allow the absorbent assembly to extend over the entire longitudinal extension of the back side of the underwear, i.e., up to the waist of the underwear, for example, to the waistband of the underwear. In other options, the rear edge portion can be adapted to allow the absorbent assembly to extend over a portion of the extension of the back side of the underwear, so that there is a distance between the waist of the underwear (e.g., waistband) and the back end of the absorbent assembly. For example, the rear edge length can be less than 40 cm, for example, less than 30 cm or less than 25 cm. Alternatively, the rear edge length can be from 2 cm to 40 cm, for example, from 4 cm to 30 cm.

[0094] Optionally, the rear edge may include one or more non-fluid tight joints.

[0095] Alternatively or in addition, the peripheral edge may form a front edge portion, which is the portion of the peripheral edge longitudinally positioned between the forward-most longitudinal ends of the sealed side edge portions and the forward-most end of the absorbent assembly.

[0096] Optionally, the front rim comprises one or more unsealed rims.

[0097] An absorbent assembly having a circumferential edge forming a front edge extending longitudinally from the forward most longitudinal ends of the sealed side edge portions toward the back of the underwear allows for variations with an extended back side of the absorbent assembly, such as may be particularly suitable for underwear intended for nighttime use. By including such a front edge portion with one or more unsealed edge portions, better fit and more versatility may be achieved when it comes to selecting the shape of the front edge portion, as outlined above.

[0098] Optionally, the entire front edge constitutes an unsealed edge. In this way, the front edge does not contain a fluid seal.

[0099] Optionally, the top layer and moisture barrier facing the wearer can extend beyond the one or more intermediate layers in at least a portion of the front edge (e.g., throughout the front edge). Like this, the front edge can be relatively thin, and therefore can provide better fit for the user.

[0100] Optionally, the top layer facing the wearer and the moisture barrier may extend beyond the one or more intermediate layers in the entire portion of the absorbent assembly extending longitudinally along the front edge. In other words, the one or more intermediate layers may extend no further than the sealed side edges in the longitudinal direction toward the front of the absorbent assembly. In this way, the front of the absorbent assembly can be relatively thin and thus can provide a better fit for the user.

[0101] The front edge portion may have a front edge length along the longitudinal axis.

[0102] The front edge length of the front edge portion can be, for example, at least 2 cm, for example, at least 4 cm or at least 10 cm. The front edge length of the front edge portion can optionally be adapted to allow the absorbent assembly to extend over the entire longitudinal extension of the front side of the underwear, i.e., up to the waist of the underwear, for example, to the waistband of the underwear. In other options, the front edge portion can be adapted to allow the absorbent assembly to extend over a portion of the extension of the front side of the underwear, so that there is a distance between the waist of the underwear (e.g., waistband) and the front end of the absorbent assembly. For example, the front edge length can be less than 40 cm, for example, less than 30 cm or less than 25 cm. Alternatively, the front edge length can be from 2 cm to 40 cm, for example, from 4 cm to 30 cm.

[0103] Optionally, the front rim may include one or more non-fluid tight joints.

[0104] For example, in some variations, the absorbent assembly may include sealed side edge portions and an unsealed rear edge portion, wherein the rear edge length is equal to or greater than the side seal length. This may be particularly suitable for underwear intended for nighttime use. For example, in some variations, the absorbent assembly may include sealed side edge portions, an unsealed rear edge portion, and an unsealed front edge portion, wherein the rear edge length and / or the front edge length is equal to or greater than the side seal length.

[0105] Alternatively, as will be appreciated from the above, the circumferential edge may consist of an unsealed front edge portion, an unsealed rear edge portion, and a pair of sealed side edge portions, the sealed side edge portions interconnecting the front edge portion and the rear edge portion.

[0106] Optionally, and providing many alternative variations, such as several of those mentioned above, the circumferential edge can be composed of a first unsealed edge portion, a second unsealed edge portion, and a pair of sealed side edge portions, which connect the first unsealed edge portion and the second unsealed edge portion to each other.

[0107] Optionally, the unsealed edge has a gathered longitudinal unsealed length as seen along the longitudinal axis y. Thus, the gathered longitudinal unsealed length is the sum of the longitudinal lengths of all transverse portions of the absorbent assembly comprising only the unsealed edge.

[0108] For example, in some variations, the gathered longitudinal unsealed length may be at least 50% of the side seal length, such as at least 75% of the side seal length, or at least equal to the side seal length.

[0109] The shape of the absorbent assembly may be adapted to the design of, for example, an undergarment, and to the needs for adequate absorbency and a satisfactory fit.

[0110] The absorbent assembly may include a front edge directed toward the front of the underwear, a rear edge directed toward the rear of the underwear, and a pair of side edges, wherein each side edge is at least partially directed toward a respective leg opening and connects the front edge and the rear edge.

[0111] Each side edge may be arranged at least partially along a respective leg opening of the underwear. "Along" in this context means that the side edge follows the shape of the leg opening and is arranged adjacent to or at the respective leg opening.

[0112] For example, each side edge may be at least partially arranged at a corresponding leg opening of the underwear.This means that the outer edge of the underwear towards each leg opening at least partially comprises the side edge of the absorbent assembly.

[0113] For example, the minimum transverse assembly crotch width of the absorbent assembly (ie, the minimum distance between the side edges of the absorbent assembly) can be equal to the minimum transverse underwear crotch width of the central region of the underwear.

[0114] For example, each side edge of the absorbent assembly may be arranged at a corresponding leg opening of the underwear in at least the front central region.

[0115] For example, substantially the entirety of each side edge of the absorbent assembly may be disposed within a corresponding leg opening of the undergarment.

[0116] In other variations, each side edge can be arranged at least partially along the corresponding leg opening of the underwear and have a certain distance from the corresponding leg opening. For example, each side edge can be arranged along the corresponding leg opening with its entirety and have a certain distance from the leg opening.

[0117] In some variations, the side edges may include concavities as seen toward the central longitudinal axis y. For example, the side edges may be generally concave, allowing the shape of the absorbent assembly to be relatively wider toward the front and back of the underwear, and narrower at the crotch region of the underwear, as mentioned above.

[0118] In some variations, the front edge can be convex from the transverse axis. Thus, at the location of the central longitudinal axis y, the front edge can protrude beyond the side edges of the absorbent assembly toward the front of the underwear. This can be beneficial for the fit of the underwear to the body and helps avoid undesirable wrinkles in the fabric panel.

[0119] The rear edge of the absorbent assembly may be shaped so as to allow for proper fit and comfort for the user.

[0120] As outlined above, the absorbent assembly comprises a top layer facing the wearer, a moisture barrier, and one or more intermediate layers, which are superposed between the top layer and the moisture barrier along a height axis perpendicular to the central longitudinal axis and the transverse axis. In this way, the absorbent assembly comprises at least three layers plus the moisture barrier, which, in some variations, is formed by a moisture barrier layer. Such an absorbent assembly may be particularly suitable for moderate to heavy body fluid flow.

[0121] Optionally, the absorbent assembly comprises a top layer facing the wearer, a moisture barrier and at least two intermediate layers.

[0122] Optionally, the absorbent assembly comprises a top layer facing the wearer, a moisture barrier and at least three intermediate layers. Thus, the absorbent assembly comprises at least four layers plus the moisture barrier, which in some variations is formed by a moisture barrier layer. Thus, the ability of the absorbent assembly to absorb relatively high body fluid flows can be further improved, for example to provide an absorbent assembly suitable for heavy body fluid flows.

[0123] For example, the absorbent assembly may include no more than 9 layers.

[0124] Thus, the absorbent assembly may include two, three, four, five, six, seven, or eight intermediate layers.

[0125] The longitudinal and transverse extension (ie the outer shape) of the absorbent assembly itself is defined by the mutual longitudinal and transverse extensions of the wearer-facing top layer and the moisture barrier.

[0126] In some variations, at least one of the at least two intermediate layers may have longitudinal and transverse extensions that substantially coincide with the extension of the absorbent assembly.

[0127] In some variations, at least two of the at least two intermediate layers may have longitudinal and transverse extensions that substantially coincide with the extension of the absorbent assembly.

[0128] For example, all intermediate layers of the absorbent assembly may have longitudinal and transverse extensions that substantially coincide with the extension of the absorbent assembly. That is, all layers of the absorbent assembly have the same longitudinal and transverse extensions.

[0129] In other variations, the longitudinal and / or lateral extension of at least one of the three intermediate layers may be different from the longitudinal and / or lateral extension of the absorbent assembly.

[0130] For example, the top layer can be weft needle. In another example, the top layer is jacquard technology. The top layer can, for example, have a basis weight of 80-200gsm. Alternatively, the top layer can be polyester, spandex or a blend thereof.

[0131] Optionally, one or more of the at least two intermediate layers are absorbent layers. For example, when the absorbent assembly comprises at least three intermediate layers, at least two of the at least three intermediate layers may be absorbent layers.

[0132] The basis weight of the absorbent layer(s) may for example be in the range of 200-350 gsm.

[0133] For example, the absorbent layer(s) may be polyester, polyamide or a mixture thereof. Optionally, the absorbent layer is a hydrophilic French terry material.

[0134] Optionally, one or more of the at least two intermediate layers can be a wicking layer. For example, the wicking layer can be arranged adjacent to the top layer. Optionally, the basis weight of the wicking layer is 180-250gsm. For example, the wicking layer can be polyester, polyamide, elastic fiber or a mixture thereof. For example, the wicking layer can be a jersey.

[0135] The absorbent assembly of the undergarment may be manufactured integrally with the undergarment, and thus one or more joints joining the absorbent assembly together may also join the absorbent assembly to one or more fabric panels of the undergarment.

[0136] Alternatively, the absorbent assembly of the underwear can be manufactured as a separate part. As mentioned above, the absorbent assembly can also be permanently attached to the underwear using one or more joints when manufactured as a separate article.

[0137] Although the option of the absorbent assembly being permanently attached to the underwear is preferred, the absorbent assembly may alternatively be releasably attached to the underwear. For example, the garment-facing side of the absorbent assembly may include a fastening member intended to releasably fasten the absorbent assembly to the underwear. Such a fastening member may be adapted to be attached directly to a fabric plate of the underwear, or the fastening member may be adapted to be attached to a corresponding fastening member of the underwear.

[0138] Thus, in a second aspect, there is provided a washable and reusable absorbent assembly for underwear, the assembly comprising a top layer facing the wearer, a moisture barrier, and one or more intermediate layers stacked between the top layer and the moisture barrier along a height axis perpendicular to the longitudinal axis and the transverse axis, the absorbent assembly defining a circumferential outer edge.

[0139] The circumferential edge of the absorbent assembly extends along the circumferential outer edge, wherein the circumferential edge includes one or more sealed edge portions, each sealed edge portion includes a fluid seal that provides a continuous seal along the edge portion between the top layer facing the wearer and the moisture barrier so as to hinder fluid leakage from the area inside the circumferential edge through the sealed edge portion to the outside of the circumferential outer edge; and the circumferential edge further includes one or more unsealed edge portions.

[0140] As such, all of the features and advantages explained above in relation to the absorbent assembly of the undergarment may be applied to the absorbent assembly itself and are encompassed by the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0141] The present disclosure will now be described in more detail with reference to the figures shown in the accompanying drawings, in which:

[0142] Figure 1 showing a front view of one variation of an absorbent undergarment including an absorbent assembly;

[0143] Figure 2a Shown in a flat laid out state with the joint between the front and back sides of the underwear removed Figure 1 a view of a first version of the undergarment facing the wearer;

[0144] Figure 2b Shown in a flat laid out state with the joint between the front and back sides of the underwear removed Figure 1 a view of a wearer-facing side of a second version of the undergarment;

[0145] Figure 2c Shown in a flat laid out state with the joint between the front and back sides of the underwear removed Figure 1 a view of a wearer-facing side of a third version of the undergarment;

[0146] Figure 3a A front view showing another variation of an absorbent undergarment including an absorbent assembly;

[0147] Figure 3b showing a wearer-facing view of the first version of the undergarment of FIG. 3 in a flat-laid-out condition with the joint between the front and back sides of the undergarment removed;

[0148] Figure 3c Shown in a flat laid out state with the joint between the front and back sides of the underwear removed Figure 1 a view of a wearer-facing side of a second version of the undergarment;

[0149] as well as

[0150] Figures 4a to 4e are schematic cross-sectional views of different variations of connectors through an absorbent assembly, such as may be used, for example, Figures 1 to 3c in underwear. DETAILED DESCRIPTION

[0151] Various aspects of the present disclosure will be described more fully below with reference to the accompanying drawings. However, the various embodiments of the absorbent underwear disclosed herein can be implemented in many different forms, such as different sizes and absorption levels, and should not be construed as limited to the aspects set forth herein. In all figures of the following detailed description, the same reference numerals will be used to indicate the same elements.

[0152] As used herein, the term "absorbent underwear" refers to a garment that is worn and intended to be placed against the skin of the wearer to absorb and contain body fluids (e.g., urine and vaginal fluids, including menstrual fluids). The underwear may be, for example, a shirt, underpants, shorts, or swimsuit of fabric. The underwear is intended for adult users. The underwear may be intended for female use. The underwear according to the present disclosure is washable, i.e., intended to be cleaned or otherwise restored after use for reuse as a sanitary article.

[0153] "Washable" means that the absorbent undergarment can be cleaned by washing. The absorbent undergarment can thus be subjected to an aqueous solution containing a detergent without losing its structural characteristics. The aqueous solution can be heated to, for example, 40°C or 60°C as part of the washing process.

[0154] The term "fabric" used in this disclosure may refer to a single-layer or multi-layer fabric. The fabric may be knitted or woven.

[0155] "Permanently attached" means that the absorbent assembly is not intended to be separated from the body fabric before, during or after use. The absorbent assembly need not be directly bonded to the fabric panel but may instead be attached to the fabric panel via auxiliary components such as leg opening edges or reinforcement patches.

[0156] Knitting is a method of constructing fabric by interlocking a series of loops of one or more yarns. There are two main categories of knitting, warp and weft.

[0157] Weaving is the method or process of interlacing yarns of two similar materials so that they cross each other at right angles to produce a woven fabric. The warp yarns run lengthwise in the fabric, while the filler yarns (filling yarns) or picks run from one side to the other.

[0158] Jacquard is a system of weaving or knitting that utilizes a versatile pattern mechanism to produce intricate designs through the use of punch cards that control the pattern produced. Jacquard knitting can be effective for circular knitting, flat knitting, warp needles, or weft needles.

[0159] Figure 1 An example of a variation of a washable and reusable absorbent underwear 1 in the form of shorts is shown. However, as outlined above, the underwear 1 proposed herein may have various designs, such as briefs, boxers, low waist, high waist, string style, Brazilian style or other suitable underwear designs. The underwear 1 is primarily designed for female use.

[0160] The underwear 1 may include one or more fabric panels 2 forming a front side 3 and a back side 4, the front side 3 and the back side 4 being joined so that the underwear 1 forms a waist opening 5 and a pair of leg openings 6a, 6b, wherein a crotch region 7 extends between the leg openings 6a, 6b. A central longitudinal axis y of the underwear 1 extends along the one or more fabric panels 2 of the underwear 1 in a direction from the back side 4 and toward the front side 3, and a transverse axis x of the underwear 1 extends along the one or more fabric panels 2 perpendicular to the central longitudinal axis y and divides the underwear 1 into the front side 3 and the back side 4.

[0161] In view of the above, the central longitudinal axis y will be centrally located as seen over the total transverse width of the underwear 1. The transverse axis x is used to divide the underwear 1 into the front side 3 and the back side 4. The positioning of the transverse axis x (i.e., the division between the front side 3 and the back side 4) can be determined by laying out the entire underwear 1 with the back of the underwear 1 facing the support surface and the front of the underwear 1 facing the observer. The waist edge of the front of the underwear 1 is to be superimposed on the waist edge of the back of the underwear 1. When the underwear 1 is laid out flat in this manner, the front side 3 of the underwear 1 faces the observer, the back side 4 of the underwear 1 faces the support surface, and the transverse axis x extends between them, i.e., along the fold formed between the front side 3 and the back side 4 adjacent to the crotch area 7 of the underwear. In this way, the front side 3 will be visible from the front of the user when the underwear 1 is put on, and the back side 4 will be visible from the back of the user when the underwear 1 is put on. As understood from the above, the transverse axis x can be the central transverse axis of the underwear 1.

[0162] Figure 1 The example underwear comprises one fabric panel 2, which is cut to form a front side 3 and a back side 4, with a waist opening 5 and leg openings 6a, 6b. However, in other variations, multiple fabric panels may be joined to form the front side 3, the back side 4 and the crotch area 7. For example, the underwear 1 may include a front panel, a back panel and a crotch panel. The one or more fabric panels may all comprise the same fabric, giving the underwear a unitary appearance, or the one or more fabrics may comprise different fabrics, for example to provide an aesthetically pleasing underwear comprising, for example, a lace fabric.

[0163] Depending on the cuts of the one or more fabric panels 2, different underwear models can be formed. Figure 1In the underwear model shown in , the leg openings 6a, 6b can have a relatively high cut, such as in a bikini model or a Brazilian model. In other examples, such as Figure 3a As shown in the underwear model in FIG, the underwear 1 may include leg portions that extend beyond the crotch region 7 in a direction away from the waist opening 5 when the underwear 1 is worn.

[0164] In order to join the front side 3 and the back side 4 so as to form the waist opening 5 and the leg openings 6a, 6b, a pair of side joints 17 may be provided, as in the example shown. The side joints 17 and any other joints joining one or more fabric panels 2 may be conventional joints in the art, such as seams made by conventional adhesives and / or mechanical bonding (e.g., conventional adhesives or sewing techniques).

[0165] Thus, the absorbent underwear 1 can be designed and manufactured according to conventional sewing techniques. For example, the absorbent underwear can include a waistband 14 arranged along the waist opening 5 of the absorbent underwear 1. For example, the absorbent underwear 1 can include edge portions 22a, 22b arranged along the leg openings 6a, 6b.

[0166] As mentioned above, one or more fabric panels 2 along the underwear 1 define a central longitudinal axis y of the underwear 1 from the back side 4 and towards the front side 3. Figure 1 In the example of FIG. 1 , when the underwear 1 is viewed from the front side 3 , the central longitudinal axis y will point to the waist opening 5 of the underwear 1 . However, when the underwear 1 is viewed from the back side 4 (not shown), the central longitudinal axis y will point away from the waist opening 5 of the underwear 1 .

[0167] exist Figure 2a middle, Figure 1 The absorbent underwear 1 of FIG. 1 is shown in a flat laid-out state, wherein the side joints 17 of the underwear 1 are removed. As seen in the laid-out state, a central longitudinal axis y is defined along the one or more fabric panels 2 and in a direction from the rear of the underwear 1 towards the front of the underwear 1. Figure 2a In FIG. 1 , the absorbent underwear 1 is shown from the wearer-facing side of the article 1. As shown in FIG. Figure 1 As shown in FIG. 2 , the one or more fabric panels 2 will have an outer side 9 facing away from the wearer, and an inner side 8 facing in a direction towards the wearer. Thus, FIG. 2 shows the underwear 1 in a flat laid-out state as seen from the inner side 8.

[0168] like Figure 2a As can be seen in FIG. 1 , the underwear 1 forms leg openings 6a, 6b. The crotch region 7 is defined as the portion of the underwear 1 extending transversely between the leg openings 6a, 6b. Thus, the crotch region 7 has a longitudinal extension corresponding to the longitudinal extension of the leg openings 6a, 6b, as shown in FIG. Figure 2aIt will be appreciated that, depending on the model of the underwear (ie the cutout of the leg openings), the longitudinal extension of the crotch region 7 according to this definition may vary significantly.

[0169] The underwear 1 further comprises an absorbent assembly 10. For example, Figure 4a As shown in FIG. 1 , the absorbent assembly 10 comprises a top layer 15 facing the wearer, a moisture barrier 12, and one or more intermediate layers 11, 16 stacked between the top layer 15 and the moisture barrier 12 along a height axis z perpendicular to the central longitudinal axis y and the transverse axis x. Figure 4a The layers 11, 12, 15, 16 of the absorbent assembly 10 are further described.

[0170] like Figure 2a As can be seen in FIG. 1 , in the underwear 1 shown, the absorbent assembly 10 is positioned on the inner side 8 of at least one fabric panel 2. The absorbent assembly 10 is arranged in at least a portion of the crotch region 7 of the underwear 1.

[0171] While in some variations, the absorbent assembly 10 may extend longitudinally beyond the crotch region 7 in a direction toward the front of the underwear 1, in other variations, for example Figure 2a In the variant shown in FIG. 1 , the absorbent assembly 10 extends in the longitudinal direction towards the front side 3 of the underwear 1 no further than the crotch region 7 .

[0172] The longitudinal extent of the absorbent assembly 10 toward the rear of the underwear 1 may depend, for example, on the design of the underwear 1. In some variations, for example, Figure 2a In the illustrated variant, the absorbent assembly 10 can extend in the longitudinal direction towards the rear region 4 of the underwear 1 no further than the crotch region 7 .

[0173] So, and as in Figure 2a As shown in the example of , the absorbent assembly 10 can be confined to the crotch region 7 where the need for absorption is immediately prevalent.

[0174] However, in other variations, the absorbent assembly 10 may be, for example, Figure 2b In the variant shown in FIG. 1 , the extension exceeds the crotch region 7. In addition, other options may be available, involving the absorbent assembly 10 alternatively or additionally extending beyond the crotch region 7 in the direction toward the front of the underwear, such as, for example, in FIG. Figure 2c shown in the variation of .

[0175] As exemplified by the illustrated undergarment 1 , the absorbent assembly 10 forms a circumferential outer edge 21 forming a closed perimeter of the absorbent assembly 10 .

[0176] In addition, a circumferential margin 30 is defined as the area between the circumferential outer edge 21 of the absorbent assembly and an imaginary inner margin boundary 31 in a plane spanned by the longitudinal axis y and the crotch axis x. For example, the imaginary inner margin boundary 31 can be consistent in shape with the circumferential outer edge 21 of the absorbent assembly 10 and concentric with the circumferential outer edge 21. As such, the circumferential margin 30 follows the circumferential outer edge 21.

[0177] As proposed herein, the circumferential edge 30 comprises one or more sealed edge portions 30a, 30b, each sealed edge portion 30a, 30b comprising a fluid seal 20a, 20b, the fluid seal 20a, 20b being arranged so as to hinder fluid leakage from the area inside the imaginary inner edge boundary 29 via the sealed edge portions 30a, 30b to the outside of the circumferential outer edge 21. In the present context, the fluid seal 20a, 20b is a fluid seal that provides a continuous seal along the sealed edge portions 30a, 30b and between the top layer 15 facing the wearer and the moisture barrier 12.

[0178] (For illustrative purposes, the sealed rims 30a, 30b are shown as shaded portions of the circumferential rim 30 in the various figures. This is merely to illustrate the positioning of the sealed rims 30a, 30b and does not imply, for example, that the fluid seals 20a, 20b should necessarily extend over the entire area of ​​the sealed rims 30a, 30b.)

[0179] As proposed herein, the circumferential rim 30 further includes one or more unsealed rim portions 30c, 30d. Thus, fluid leakage from the area inside the imaginary inner rim boundary 31 to the outside of the circumferential outer edge 21 via one or more unsealed rim portions 30c, 30d is not hindered by the fluid seal.

[0180] However, as will be understood from the example embodiments described herein, the one or more sealed edge portions 30a, 30b and the one or more unsealed edge portions 30c, 30d can be distributed along the circumferential edge 30 so that an adequate fluid seal of the absorbent assembly 10 is provided to ensure a well-functioning absorbent underwear 1 while providing the desired comfort and fit.

[0181] For example, the sealed edges may be arranged in pairs such that the sealed edges of each pair are positioned relative to each other and on each side of the longitudinal axis y. Similarly, the unsealed edges may be arranged in pairs such that the unsealed edges of each pair are positioned relative to each other and on each side of the longitudinal axis y. Thus, each pair of unsealed edges provides an unsealed longitudinal portion of the absorbent assembly having an unsealed longitudinal length, and each pair of sealed edges provides a sealed longitudinal portion of the absorbent assembly having a sealed longitudinal length.

[0182] For example, and if Figure 2a , the one or more sealed edges may include a pair of sealed side edges 30a, 30b positioned relative to each other and on each side of the longitudinal axis y. Each sealed side edge 30a, 30b extends longitudinally along at least a portion of the crotch region 7 of the underwear 1. As mentioned above, each sealed side edge 30a, 30b thus includes a fluid seal 20a, 20b, which provides a continuous seal between the top layer 15 facing the wearer and the moisture barrier 12 so as to hinder fluid leakage from the area inside the peripheral edge 30 via the sealed side edges 30a, 30b to the outside of the peripheral outer edge 21.

[0183] When underwear 1 is worn, most fluid insults (such as urine or menses) will contact the central crotch region of underwear 1, namely insult area 25. Insult area 25 will be circumscribed by imaginary inner edge boundary 31, and thus insult area 25 will be circumscribed by peripheral edge 30.

[0184] By providing sealed side edges 30a, 30b, leakage of fluid insults towards leg openings 6a, 6b may be avoided. It has been recognised that due to the proximity of leg openings 6a, 6b to insult areas 25, combined with the movement of the wearer, these areas of the undergarment 1 are otherwise more susceptible to leakage than other areas.

[0185] "Leg opening" in this context refers to the portion of the legs of the underwear 1 that will extend through the crotch region 7 of the underwear 1. Thus, if the side joints 17 of the underwear 1 are removed, such as Figure 2a , and the crotch region 7 with the absorbent assembly 10 is arranged to be laid out flat, the leg openings 6a, 6b are understood to be openings as seen in the plane of the transverse axis x and the longitudinal axis y, through which the legs of the user will extend along an axis z perpendicular to the transverse axis x and the longitudinal axis y when the article is worn. Thus, when determining the extension of the leg openings 6a, 6b, any portion of the underwear 1 that is intended to extend along the legs of the wearer when the underwear 1 is disregarded. That is, when the complete underwear 1 is in a position such as Figure 1 In the flat state shown in a, any portion of the undergarment extending beyond the location of the transverse axis x in a direction away from the waist opening 5 will be disregarded (eg may be cut off) when determining the extent of the leg openings 6a, 6b.

[0186] In some variations, for example Figure 2a In the variant shown in FIG. 1 , in each sealed side edge 30a, 30b, at least a portion of the peripheral outer edge 21 of the absorbent assembly follows the contour of the corresponding leg opening 6a, 6b of the underwear 1. Figure 2aIn a variation of this, throughout each sealed side margin portion 30a, 30b, the peripheral outer edge 21 of the absorbent assembly follows the contour of the corresponding leg opening 6a, 6b.

[0187] However, in other variations (not shown), in each sealed side edge portion 30a, 30b, a portion of the circumferential outer edge 21 of the absorbent assembly may follow the contour of the corresponding leg opening 6a, 6b, and another portion of the circumferential outer edge 21 may deviate from the contour of the corresponding leg opening 6a, 6b.

[0188] As in Figure 2a As illustrated in FIG. 1 , the fluid seals 20a , 20b may be arranged to substantially coincide with the peripheral outer edge 21 of the absorbent assembly 10 .

[0189] In other variants, the fluid seals 20a, 20b may be arranged to extend along and at a distance from the circumferential outer edge 21 .

[0190] In some variations, the distance may be constant, ie the one or more fluid seals 20a , 20b may generally follow the contour of the circumferential outer edge 21 .

[0191] In yet other variations, the distance may vary, ie the one or more fluid seals 20a, 20b may have a shape that is more or less different from the contour of the circumferential outer edge 21 .

[0192] In either case, the one or more fluid seals 20a, 20b can advantageously extend relatively close to the peripheral outer edge 21, leaving a large portion of the absorbent assembly 10 available for entry and distribution of body fluids. Thus, the distance can be, for example, less than 5 mm. For example, the distance can be less than 2 mm or less than 1 mm.

[0193] Optionally, the fluid seals 20a, 20b may include one or more fluid-tight joints. As in the example shown, each fluid seal 20a, 20b includes a fluid-tight joint. For example, such a fluid-tight joint may be achieved by a fluid-tight adhesive joint or a fluid-tight welded joint (e.g., a heat welded joint or an ultrasonic welded joint).

[0194] In some variations, the wearer-facing top layer 15 and the moisture barrier 12 may be directly joined by at least one of the fluid-tight joints.

[0195] In other variations, the wearer-facing top layer 15, the moisture barrier 12 and one or more of the one or more intermediate layers 11, 16 may be joined by at least one of the fluid-tight joints.

[0196] In some variations, the one or more fluid seals 20a , 20b may include a fluid sealing member 40 .

[0197] For example, the fluid sealing member 40 may be an elastic band.

[0198] In some examples, the fluid sealing member 40 may be an elastic band provided with an adhesive to provide a fluid-tight joint including the fluid sealing member.

[0199] For example, the one or more fluid seals 20a, 20b may comprise a fluid-tight joint comprising an elastic band provided with an adhesive for joining the wearer-facing top layer 15 and the moisture barrier 12.

[0200] The following will refer to Figures 4a to 4e The fluid seals 20a, 20b are further described.

[0201] Each of the fluid seals 20a, 20b in the sealed side rims 30a, 30b may extend continuously over a longitudinal side seal length SSL as seen along the longitudinal axis y.

[0202] In order to provide an adequate seal, the longitudinal side seal length SSL may for example be at least 5 cm, such as at least 10 cm.

[0203] The longitudinal side seal length SSL may for example be less than 45 cm, such as less than 35 cm.

[0204] As such, the longitudinal side seal length SSL may be selected so as to be suitable for providing sufficient resistance to fluid leakage through the sealed side margins 30a, 30b.

[0205] In addition to the one or more sealed side edge portions 30a, 30b, the peripheral edge 30 of the absorbent assembly 1 also includes one or more unsealed edge portions 30c, 30d. As mentioned above, fluid leakage from the area inside the imaginary inner edge boundary 31 to the outside of the peripheral outer edge 21 via the one or more unsealed edge portions 30c, 30d is not hindered by the fluid seal.

[0206] Naturally, it is desirable to avoid leakage of body fluids from the absorbent assembly 10 as a whole. However, it has now been recognized that for some portions of the circumferential edge 30, the risk of leakage is still small. For example, portions of the circumferential edge 30 that are relatively far from the insult area 25 of the underwear 1 may not be prone to leakage, because fluid received at the insult area needs to be distributed over a relatively long distance in order to reach such an edge portion. Therefore, portions of the circumferential edge 30 that are considered to be less prone to leakage can be selected as unsealed edge portions.

[0207] In this way, the unsealed edge can be free of fluid seals. Therefore, for example, the shape of the unsealed edge does not need to be limited by the need to provide a fluid seal. Moreover, the flexibility of the unsealed edge is not limited by the presence of any fluid seal. Therefore, the unsealed edge can be suitable for providing comfort and fit without considering any problems associated with fluid sealing.

[0208] For example, and as in Figure 2a As shown in the variant of FIG. 3 , the circumferential rim 30 may be free of fluid seals outside the one or more sealed side rim portions 30 a, 30 b.

[0209] For example, and as in Figure 2a In the embodiment, the absorbent assembly 10 may not contain a fluid seal outside of the sealed side edge portions 30a, 30b.

[0210] As such, the rim portions of the circumferential rim 30 that are not sealed side rim portions 30a, 30b may be free of fluid seals and may therefore be designed without restrictions on providing leak safety in order to benefit fit and comfort.

[0211] The unsealed rims 30c, 30d may, for example, include non-fluid-tight joints 20c, 20d, such as conventional seams or stitches.

[0212] For example, and as in Figure 2a As shown in FIG. 1 , the one or more unsealed edge portions may include a front edge portion 30 c , wherein the peripheral outer edge 21 of the absorbent assembly 10 faces the front portion 3 of the underwear 1 .

[0213] For example, as in Figure 2a As shown in FIG. 1 , the one or more unsealed edges may include a back edge 30 d , wherein the peripheral outer edge 21 of the absorbent assembly 10 faces the back 4 of the underwear 1 .

[0214] Thus, for example, and in Figure 2a As shown in FIG. 1 , the peripheral edge 21 may include a back edge portion 21 d directed toward the back of the underwear 1 , a front edge portion 21 c directed toward the front of the underwear 1 , and side edge portions 21 a, 21 b directed toward the leg openings 6 a, 6 b of the underwear. Figure 2a As shown in the variation of , the side edge portions 21a, 21b may interconnect the front edge portion 21c and the rear edge portion 21d to form the entire circumferential edge 21. Similarly, as in Figure 2a As illustrated in FIG. 1 , the sealed side edge portions 30a, 30b may extend along the side edge portions 21a, 21b and interconnect an unsealed front edge portion 30c extending along the front edge 21c and an unsealed rear edge portion 30d extending along the rear edge 21d.

[0215] The shape of the absorbent assembly 10 can be adapted to the various absorbent needs and various designs of the undergarment 1 so as to provide adequate absorbency and a satisfactory fit.

[0216] For example, as seen towards the central longitudinal axis y, the side edge portions 21a, 21b may include a recessed portion. Figure 2a In the illustrated variation, the entire side edge portions 21a, 21b are concave towards the central longitudinal axis y, ie are bent inwardly towards the central longitudinal axis y. Thus, the absorbent assembly 10 can be adapted to fit between the legs of the wearer.

[0217] The front edge portion 21c of the absorbent assembly may be similarly shaped in view of the comfort and fit requirements of the underwear 1. In some variations, such as in the underwear 1 shown, the front edge may be convex from the transverse axis x, i.e., curved away from the transverse axis x. Figure 2a As shown in FIG, at the location of the central longitudinal axis y, the front edge 21c can thereby protrude toward the front of the underwear 1 beyond the extension of the side edge portions 21a, 21b of the absorbent assembly 10. This can be beneficial for the fit of the underwear to the body and helps avoid undesirable wrinkles in the fabric panel.

[0218] Furthermore, the rear edge portion 21d of the absorbent assembly 10 may be shaped in accordance with the requirements for comfort and fit of the underwear 1. Figure 2a As shown in FIG. 1 , the rear edge 21 d may for example be concave towards the transverse axis x, ie curved towards the central transverse axis x. In other variations, the rear edge 21 d may protrude beyond the extension of the side edge portions 21 a , 21 b of the absorbent assembly 10 towards the rear of the underwear 1 .

[0219] Figure 2b Another variation of the underwear 1 is shown. Figure 2a Features similar to those described are denoted by the same reference numerals. Figure 2a The description of the features made by the variants also applies to Figure 2b variants.

[0220] Figure 2b The absorbent assembly 10 shown in FIG. 1 includes a pair of sealed side margins 30a, 30b, as shown in FIG. Figure 2a as described.

[0221] In addition, and as in Figure 2bAs shown in FIG. 1 , the circumferential edge 30 of the absorbent assembly 10 may form a rear edge portion 30r that extends longitudinally from the rear longitudinal ends of the sealed side edges 30a, 30b toward the back 4 of the underwear 1 to the rear end of the absorbent assembly 10. The rear edge portion 30r may include one or more unsealed edges. For example, and as shown in FIG. Figure 2b , the one or more unsealed edges of the absorbent assembly 10 include a rear edge 30r, that is, the absorbent assembly 10 includes an unsealed rear edge 30r. As such, the rear edge 30r may not contain a fluid seal.

[0222] Thus, an undergarment 1 is provided which has a rear edge portion 30r extending behind the sealed side edge portions 30a, 30b. As such, this may be desirable, for example, for forming an undergarment 1 particularly suitable for nighttime use. By ensuring that the rear edge portion 30r is an unsealed edge portion, the shape and extension of the absorbent assembly 1 in the rear edge portion 30r need not be restricted by the presence of any fluid seal.

[0223] For example, the rear edge portion 30r may have a rear edge length along the longitudinal axis y. The rear edge length may be, for example, at least 2 cm, such as at least 4 cm or at least 10 cm. The rear edge length may be, for example, less than 40 cm, such as less than 30 cm. The rear edge length may be in the range of from 2 cm to 40 cm, such as from 4 cm to 30 cm,

[0224] Thus, for example, an undergarment 1 may be provided, wherein the sealed side edge length SSL is between 5 cm and 35 cm, and the rear edge length is at least 2 cm, for example between 4 cm and 30 cm.

[0225] In some variations, for example in Figure 2b As shown in FIG. 1 , the rearmost end of the absorbent assembly 10 may be arranged at a distance from the rear waist end of the underwear 1 .

[0226] For example, the rearmost end of the absorbent assembly 10 may be arranged at a distance of at least 2 cm, such as at least 4 cm or at least 6 cm, from the rear waist end of the underwear 1 .

[0227] As in Figure 2b As illustrated in FIG. 1 , the absorbent assembly 10 may extend beyond the crotch region 7 of the underwear 1 , for example in a direction towards the back 4 of the underwear 1 .

[0228] Figure 2c Still another variation of the underwear 1 is shown. Figure 2a or Figure 2b Features similar to those described above are denoted by the same reference numerals and are relative to Figure 2a or Figure 2bThe description of the features made by the variants also applies to Figure 2c variants.

[0229] As reference Figure 2b described in Figure 2c In a variation of the embodiment of the present invention, the circumferential edge 30 of the absorbent assembly 10 can form a rear edge portion 30r, which is located in the portion of the absorbent assembly 10 that extends longitudinally from the rear longitudinal ends of the sealed side edges 30a, 30b toward the back 4 of the underwear 1 to the rear end of the absorbent assembly 10. The rear edge portion may include one or more unsealed edges 30r. For example, and as in Figure 2c As shown in FIG. 1 , the one or more unsealed edges of the absorbent assembly 10 include the rear edge 30r, that is, the rear edge 30r is an unsealed rear edge 30r. As such, the rear edge 30r may not contain a fluid seal.

[0230] In addition, as in Figure 2c In a variation of the embodiment of the present invention, the peripheral edge 30 of the absorbent assembly 10 can form a front edge portion 30f, which is located in the portion of the absorbent assembly 10 that extends longitudinally from the forward longitudinal ends of the sealed side edge portions 30a, 30b to the forward end of the absorbent assembly 10. The front edge portion 30f may include one or more unsealed edge portions 30f. For example, and as in Figure 2c As shown in FIG. 1 , the one or more unsealed edges of the absorbent assembly 10 include the front edge 30f, that is, the front edge 30r is an unsealed front edge 30r. As such, the front edge 30r may not contain a fluid seal.

[0231] As from Figure 2b and Figure 2c As can be appreciated from the example of, the provision of an unsealed front edge 30f and / or an unsealed rear edge 30r provides flexibility in selecting the shape and extension of the front edge and / or rear edge. Figure 2b As shown in the example of , the contour of the front and / or rear edge portion may include a rounded shape, such as a bulb shape. In other examples, such as Figure 2c As shown in FIG. 1 , the contour of the front and / or rear edge portions may include rectilinear shapes, such as lines and / or corners.

[0232] Figure 3a Still another variation of the underwear 1 is shown, as when the complete underwear 1 is laid out in a flat state on a support surface. Figure 1 and Figure 2a to Figure 2c Features similar to those described above are denoted by the same reference numerals and are relative to Figure 1 and Figure 2a to Figure 2c The description of the characteristics made also applies to Figure 3a and Figure 3b For simplicity, Figure 3a to Figure 3c By Figure 1 to Figure 2c Fewer details are shown. However, the skilled person will appreciate that the omitted details (such as the positioning of the sealing and non-sealing joints 20a, 20b, 20c, 20d) can be equally applied and adapted to the Figure 3a to Figure 3c variants.

[0233] Figure 3a Underwear 1 with Figure 1 and Figures 2a to 2c The underwear shown in the figure differs mainly in that when Figure 3a When the entire underwear is laid out in FIG. 1 , the underwear 1 is a model having legs extending beyond the transverse axis x in a direction away from the waist opening 5. As mentioned above, the extended legs are ignored when determining the leg openings 6a, 6b as defined herein. Figure 3b and Figure 3c In Figure 3a The underwear 1 of the model shown in FIG. 1 is shown without any leg portions extending beyond the transverse axis x in a direction away from the waist opening 5 cut from the underwear 1 .

[0234] Go to Figure 3b , which shows Figure 3a The underwear 1 is similar to Figure 2a to Figure 2c , it is found that for this type of model, when determining the extension of the leg openings 6a, 6b, these openings can have a relatively short extension along the longitudinal axis y. Thus, by definition, the crotch region 7 extending between the leg openings can be similarly relatively short.

[0235] As in Figure 3b As shown in the example of , the absorbent assembly 10 can extend beyond the crotch region 7 toward the front and back of the underwear 1. As described with respect to other examples, the absorbent assembly 10 can, for example, include a pair of sealed side edge regions 30a, 30b, an unsealed front edge region 30f and / or an unsealed rear edge region 30r. For example, and as described in Figure 3b In a variant of the invention, the absorbent assembly 10 may include an unsealed front edge region 30f and an unsealed rear edge region 30f. The extension and shape of the front and / or rear edge regions may be freely selected and may be, for example, Figure 3b As mentioned above, the rearmost and / or the most forward end of the absorbent assembly 10 may be arranged at a distance from the waist edge at the waist opening 5 of the underwear 1.

[0236] Figure 3c Yet another variation of the underwear 1 is shown. Figure 3c The overall model of the underwear in is similar to that of Figure 3a and Figure 3b The overall model of underwear described above. Figure 1 and Figure 2a to Figure 2c or Figure 3a to Figure 3b Similar features are indicated by the same reference numerals and are similar to those described above. Figure 1 and Figure 2a to Figure 2c or Figure 3a to Figure 3b The description of the characteristics made also applies to Figure 3c variants.

[0237] For example, and as in Figure 3c As shown in FIG. 1 , the absorbent assembly 10 may extend substantially over the entire front side 3 and / or back side 4 of the underwear 1. Figure 3c As shown in the example of , the rear end of the absorbent assembly 10 can coincide with the rear waist end of the underwear 1 as formed by one or more fabric panels 2. Similarly, and as in Figure 3c In the example of FIG. 1 , the front end portion of the absorbent assembly 10 may coincide with the front waist end portion of the underwear 1 .

[0238] like Figure 3c As shown in the figure, the absorbent assembly 10 may include sealed side edges 30a, 30b, which extend longitudinally over the entire front side 3 and / or back side 4 of the underwear 1. Thereby, the side seal length SSL corresponds to the total longitudinal extension of the absorbent assembly 10. The absorbent assembly may further include an unsealed front edge portion 30c and / or an unsealed rear edge portion 30d. The unsealed front and / or rear edge portions 30c, 30d may coincide with the front waist edge and / or rear waist edge as formed by one or more fabric panels, and optionally be provided with a waistband 14.

[0239] In other variations, the side seal length SSL may be less than the total longitudinal extension of the absorbent assembly, as described above with respect to Figure 1 to Figure 2c Again, about the variants of Figure 1 to Figure 2c The features and explanations made also apply to, for example, FIG. 3 to FIG. Figure 3c The model shown in .

[0240] The fluid seals and / or fluid tight joints of the absorbent assembly 10 may be of any type conventionally known in the art. Figures 4a to 4e A fluid seal 20a (eg, a fluid seal 20a that may be included in a sealed side edge 30a, such as in Figure 2a to Figure 2c or Figure 3b to Figure 3c Different non-limiting examples of schematic cross-sectional views of ) are shown in .

[0241] The absorbent assembly 10 comprises a top layer 15 facing the wearer, a moisture barrier 12 and optionally one or more intermediate layers 11, 16, which are superimposed between the top layer 15 and the moisture barrier 12 along a height axis z perpendicular to the central longitudinal axis y and the transverse axis x. In the figures, for better visibility, the layers 11, 12, 15, 16 are shown as being spaced apart from each other. However, in practice, the layers will be superimposed on each other, as seen in the height direction z, with each layer contacting the adjacent upper and / or lower layers.

[0242] exist Figure 4a In a variation of , three intermediate layers 11, 16 are shown as an example, in this case two absorbent layers 11 and a wicking layer 16. In addition, the absorbent assembly 10 comprises a liquid-impermeable moisture barrier 12. The liquid-impermeable barrier 12 prevents liquid from leaking through the one or more intermediate layers 11 into the fabric panel 2. The liquid-impermeable barrier 12 can be in the form of a liquid-impermeable barrier layer 12, such as Figure 4a However, in other variations, the liquid-impermeable barrier 12 may be a coating on the wearer-facing side of the fabric panel 2 or on the garment-facing side of the absorbent layer 11. The absorbent assembly 10 further comprises a top layer 15 facing the user's skin.

[0243] In an absorbent assembly 10 that includes one or more intermediate layers 11 , 16 , all layers of the absorbent assembly 10 may in some variations extend throughout the area of ​​the absorbent assembly, ie, all layers extend to a peripheral outer edge 21 of the absorbent assembly 10 .

[0244] In other variations, one or more of the intermediate layers 11, 16 may extend over less than the entire area of ​​the absorbent assembly 10. In other words, in selected areas of the absorbent assembly 10, the assembly includes less than all of the layers of the absorbent assembly.

[0245] For example, the selected area of ​​the absorbent assembly 10 may include only the top layer 15 and the moisture barrier 12 facing the wearer. This may be advantageous for areas of the absorbent assembly 10 where there is a lesser need to absorb fluid and / or where the underwear 1 is required to better fit and shape the user's body. For example, when the absorbent assembly 10 includes an unsealed front and / or rear edge portion, the longitudinal area of ​​the absorbent assembly corresponding to the unsealed front and / or rear edge portion may be a selected area that includes only the top layer 15 and the moisture barrier 12 facing the wearer. In this way, the absorbent assembly 10 may include the top layer 15 and the moisture barrier 12 facing the wearer without an intermediate layer along the front edge length FML and / or the rear edge length RML.

[0246] For example, the longitudinal region of the absorbent assembly 10 corresponding to the longitudinal extension of the sealed side edge portion may include a top layer 15 facing the wearer, a moisture barrier 12, and one or more intermediate layers 11, 16. Thus, the absorbent assembly 10 may include a top layer 15 facing the wearer and a moisture barrier 12, with one or more intermediate layers 11, 16 along the sealed side edge length SSL.

[0247] As such, the peripheral edge may comprise the top layer 14 facing the wearer, the moisture barrier 12 and the one or more intermediate layers 11 , 16 , for example at the sealed side edge portions.

[0248] However, in other variations, for one or more circumferential edge portions, the one or more intermediate layers 11, 16 may be arranged to be confined inside the circumferential edge 30, as seen in the transverse and / or lateral directions. For example, the one or more intermediate layers 11, 16 may be confined inside the entire circumferential edge.

[0249] In case the one or more intermediate layers 11 , 16 do not extend into the circumferential edge, joining of the top sheet 15 and the moisture barrier 12 via one or more sealed or non-sealed joints may be facilitated.

[0250] Nevertheless, it may be desirable to join the top sheet 15, the moisture barrier 12, and the one or more intermediate layers 11, 16 with a fluid-tight joint. Figure 4a In the embodiment of the present invention, the fluid-tight joint 20a can be arranged in the sealed edge portion including the top layer 15 facing the wearer, the barrier layer 12 and one or more intermediate layers 16, 11. As shown herein, the fluid-tight element 40 can be arranged on the peripheral edge of the top layer 15 facing the wearer, the barrier layer 12, and in this example on the peripheral edge of the intermediate layers 16, 11. In this way, the fluid-tight element 40 (which can be, for example, an elastic band) forms a continuous seal between the top layer 15 facing the wearer and the moisture barrier 12 to hinder fluid leakage in the transverse direction x.

[0251] Optionally, and as in Figure 4a In the embodiment, in addition to the fluid sealing element 40, the fluid sealing joint 21 can also include a joint 23, which joins the layers 15, 12, 16, 11 together inside the outer peripheral edge of the layers 15, 12, 16, 11. In the variant shown, the joint 23 is a mechanical joint, such as a seam. In other variants, the joint 23 can be, for example, an adhesive joint. In the variant shown, the joint 23 is arranged to be covered by the fluid sealing element 40. In other variants, the joint 23 can be arranged to extend through the fluid sealing element 40.

[0252] exist Figure 4aIn the example of FIG. 4 , the fluid sealing element 40 also extends over the fabric panel 2 so as to permanently attach the absorbent assembly 10 to the fabric panel. This provides effective attachment of the absorbent assembly 10 together with the fluid seal 20a to the fabric panel 2. Moreover, as in the illustrated variation, the joint 23 extends through the fabric panel 2.

[0253] However, other variations are possible in which the fabric panels 2 are not included in the seal created by the fluid-sealing element 40, but rather the absorbent assembly 10 is permanently attached to one or more fabric panels 2 of the undergarment 1 by other means, such as by seams.

[0254] Figure 4b and Figure 4a The difference is that there are two intermediate layers 16, 11 in the absorbent assembly 10, which are in the form of a wicking layer 16 and an absorbent layer 11. Figure 3b As exemplified in FIG. 1 , the intermediate layers 16, 11 need not extend all the way into the peripheral edge 30 of the absorbent assembly 10. Thus, as in Figure 4b In the example of , the fluid sealing element 40 can be arranged on the peripheral edges of the top layer 15 and the barrier layer 12 facing the wearer, wherein the top layer 15 and the barrier layer 12 facing the wearer are in direct contact with each other. Figure 4b As shown in Figure 4a In the embodiment, the sealing element 40 may also optionally extend over the peripheral edge of the fabric panel 2 . Figure 4b Variations of can be complemented with one or more joints 23 between the layers (e.g. adhesive or mechanical joints 23), as described with respect to Figure 4a Described.

[0255] Figure 4c Shown with Figure 4b , but in which the sealing element 40 does not extend over the peripheral edge of the fabric panel 2. Instead, the absorbent assembly 10 including the sealing member 40 is attached to the fabric panel 2 by an edge portion 22a that extends over the sealing member 40 and the peripheral edge of the fabric panel 2. In this way, the edge portion 22a can be used to attach the absorbent assembly 10 to the fabric panel 2 as described in any of the examples or illustrations herein. Again, it will be understood that, for example, one or more joints 23, such as adhesives or mechanical joints 23, may be applied to join the edge portion 22a and / or in combination with the fluid seal 40, as described with respect to Figure 4a and Figure 4b Described.

[0256] Figure 4dAn example of a variation is shown in which the fluid seal 20a comprises a sealing joint, such as a welded joint. In this case, the fluid seal can be formed from a molten material. For example, the sealing joint can include a hot melt adhesive. In another example, the sealing joint can include a molten material from, for example, layers to be joined together, such as an ultrasonic sealing joint or a heat sealing joint.

[0257] Figure 4e A modified example is shown in which the fluid seal 20a comprises a fluid-tight joint including a fluid-tight element 40. For example, the fluid-tight element 40 may be an elastic band including an adhesive.

[0258] As will be appreciated from the above, the top layer 15 and the moisture barrier 12 may be joined indirectly, i.e., at the joint, the one or more intermediate layers 11, 16 extend between the top layer 15 and the moisture barrier 12, such as at Figure 4a For example, refer to Figure 4b to Figure 4e The variation shown may be suitable for indirectly joining the top layer 15 and the moisture barrier 12 .

[0259] Alternatively, the top layer 15 and the moisture barrier 12 may be directly joined, ie, at the joint, the top layer 15 and the moisture barrier 12 are arranged without intermediate layers 11, 16 therebetween, such as Figure 4b to Figure 4e However, referring to Figure 4a The variant shown may also be suitable for directly joining the top layer 15 and the moisture barrier 12 .

[0260] The top layer 15 can be made of any suitable fabric, including naturally derived fibers selected from the group consisting of: cotton, wool, silk, cellulose, regenerated cellulose, rayon, viscose, modal, lyocell, tencel, bamboo, hemp, flax, ramie, coir or banana. Alternatively, the top layer can be made of synthetic fibers selected from the group consisting of: polyamide, acrylic, polyester or elastic fibers, such as a mixture of polyester and elastic fibers. In addition, the top layer 15 can be made of a blend or mixture of naturally derived fibers and / or synthetic fibers. The material used to construct the top layer should be soft and non-irritating to the skin and easily penetrated by any body fluids. According to the present disclosure, the top layer should be washable. The top layer can include between 20% and 100% naturally derived fibers, more preferably between 40% and 100% naturally derived fibers, and most preferably between 60% and 100% naturally derived fibers. The top layer 15 facing the skin includes a water-permeable material, thereby allowing body fluids to migrate to the absorbent layer or multiple absorbent layers 11 below. The top layer 15 may have a basis weight of 80-200 gsm.

[0261] As in Figures 4a to 4eIn the variation shown in exemplified, a wicking layer 16 can be provided below the top layer 15. The wicking layer 16 has wicking characteristics to allow moisture to diffuse away from the wearer and into the absorbent layer 11 or multiple absorbent layers 11. In addition, wicking enables moisture to diffuse effectively, thereby allowing moisture to be received in a wider area of ​​one or more absorbent layers 11 below. This feature is particularly relevant for users suffering from pressure incontinence, because the outflow of urine may cause the absorbent layer 11 to be quickly saturated at the impact point. The wicking characteristics of the wicking layer 16 increase the overall absorbent capacity of the absorbent layer by spreading the volume of fluid over a wider receiving area in the absorbent layer 11. The wicking layer 16 can be composed of any suitable fabric, including naturally derived fibers or mixtures thereof selected from the group consisting of: cotton, wool, silk, cellulose, regenerated cellulose, rayon, viscose, modal, lyocell, tencel, bamboo, hemp, flax, ramie, coconut shell fiber or banana. Alternatively, the wicking layer 16 can be composed of synthetic fibers or mixtures thereof selected from the group consisting of polyamide, acrylic, polyester or elastane. In addition, the wicking layer 16 can be composed of a blend or mixture of naturally derived fibers and / or synthetic fibers. According to the present disclosure, the wicking layer should be washable. The wicking layer 16 can include between 20% and 100% naturally derived fibers, more preferably between 40% and 100% naturally derived fibers and most preferably between 60% and 100% naturally derived fibers. The basis weight of the wicking layer can be 180-250 gsm.

[0262] The absorbent assembly 10 of the absorbent underwear 1 may include one or more absorbent layers 11 that are capable of absorbing liquid and releasing liquid during washing. The release of absorbed liquid is beneficial because it enables the absorbent underwear 1 to be restored for reuse. Reusable absorbent underwear provides a more sustainable alternative to commonly used disposable hygiene articles that are not intended to be reused.

[0263] The absorbent layer or layers 11 may comprise any material capable of absorbing fluids, such as woven or non-woven microfibers or polymer knits, fabrics formed from hydrophilic fibers, absorbent fibers or powders. The absorbent layer or layers 11 may be natural or synthetic fibers, as described above for the other inner layers, but may be polyesters and polyamides and contain an odor management agent. The odor management agent may be silver ions, copper ions and zeolites or polyhexamethylene biguanide PHMB.

[0264] The absorbent layer or layers 11 may also include materials with an open porous structure, such as high loft or synthetic fibers with storage properties. The absorbent layer may include between 20% and 100% naturally derived fibers, more preferably between 40% and 100% naturally derived fibers, and most preferably between 60% and 100% naturally derived fibers. The basis weight of each absorbent layer 11 may be 200-350 gsm. There may be one or more absorbent layers 11 in the absorbent assembly 10. For example, as in the illustrated variation, the absorbent assembly 10 may include two absorbent layers 11.

[0265] The liquid-impermeable barrier 12 may include any suitable material or combination of materials that prevents liquid from migrating from the absorbent assembly 10 to the fabric layer 2. As in the variation shown, the liquid-impermeable barrier 12 may be a liquid-impermeable barrier layer and may include a hydrophobic woven or nonwoven material having inherent hydrophobic properties or having been treated to become hydrophobic. Examples of hydrophobic materials for treating the barrier layer are polymers, such as silicones, polyurethanes and combinations thereof. The liquid-impermeable barrier layer 12 may include a microporous polymer film, such as polyethylene, PTFE or a polyurethane film or a combination thereof. A laminate of a polymer film and a nonwoven material may also be used. Alternatively, the liquid-impermeable barrier 12 may be a coating of a material that is impermeable to moisture. The coating may be a polymer, such as a polyurethane wax, which is, for example, provided on the surface of the absorbent layer 11 facing away from the wearer, or provided on the surface of the fabric panel 2 facing the wearer. The liquid-impermeable barrier 12 may be polyurethane.

[0266] The liquid-impermeable barrier 12 is preferably breathable to allow vapor to escape from the absorbent underwear 1 while preventing liquid from passing through the fabric layer. In addition, the liquid-impermeable barrier 12 can be constructed of an elastic material to provide the absorbent assembly 1 with the required flexibility to adapt to the user's anatomical structure and movements. This improved fit increases the comfort of the wearer during use and helps prevent leakage from migrating through the leg openings 6a, 6b of the underwear.

[0267] The fabric of the one or more fabric panels 2 can be made of any suitable fabric, including naturally derived fibers and mixtures thereof selected from the group consisting of: cotton, wool, silk, cellulose, regenerated cellulose, rayon, viscose, modal, lyocell, tencel, bamboo, hemp, flax, ramie, coconut shell fiber or banana. Alternatively, the fabric can be made of synthetic fibers or mixtures thereof selected from the group consisting of: polyamide, acrylic, polyester. In addition, the fabric can be made of a blend or mixture of naturally derived fibers and / or synthetic fibers. The fibers can be recycled fibers. The fabric can include a stretchable fabric, such as an elastic fiber, so that the absorbent underwear can provide a firm fit while adapting to the wearer's movement, thereby preventing any leakage from migrating through the leg openings and keeping the absorbent assembly in place. The fabric is preferably breathable to allow steam to escape from the wearer's skin and the absorbent assembly.

[0268] The present disclosure may vary within the scope of the appended claims.For example, the materials and dimensions of the different layers used to form the absorbent assembly may vary, as described above.

Claims

1. A washable and reusable underwear (1) comprising one or more fabric panels (2) forming a front side (3) and a back side (4), the front side (3) and the back side (4) being joined so that the underwear (1) forms a waist opening (5) and a pair of leg openings (6a, 6b), wherein a crotch region (7) extends between the leg openings (6a, 6b), wherein a central longitudinal axis (y) of the underwear (1) extends along the one or more fabric panels (2) of the underwear (1) in a direction from the back side (4) and towards the front side (3), and a transverse axis (x) of the underwear (1) extends perpendicularly to the central longitudinal axis (y) along the one or more fabric panels (2) to divide the underwear (1) into the front side (3) and the back side (4); The underwear (1) further comprises an absorbent assembly (10) arranged in at least a part of the crotch region (7) and comprising a top layer (15) facing the wearer, a moisture barrier (12) and one or more intermediate layers (11, 16) superposed between the top layer (15) and the moisture barrier (12) along a height axis (z) perpendicular to the longitudinal axis (y) and the transverse axis (x), The absorbent assembly (10) defines a peripheral outer edge (21), and the underwear (1) is characterized by: a peripheral edge (30) of the absorbent assembly (10) extending along the peripheral outer edge (21), The circumferential edge (30) comprises one or more sealed edge portions (30a, 30b), each sealed edge portion (30a, 30b) comprising a fluid seal (20a, 20b), the fluid seal (20a, 20b) providing a continuous seal along the sealed edge portions (30a, 30b) and between the wearer-facing top layer (15) and the moisture barrier (12) so as to hinder fluid leakage from the area inside the circumferential edge (30) through the sealed edge portions (30a, 30b) to the outside of the circumferential outer edge (21); and the circumferential edge (30) further comprises one or more unsealed edge portions (30c, 30d).

2. The undergarment according to claim 1, wherein said absorbent assembly (10) is free of fluid seals (20a, 20b) outside said one or more sealed edges (30a, 30b).

3. The underwear according to claim 1 or 2, wherein: In the one or more sealed rims (30a, 30b), the fluid seal or seals (20a, 20b) substantially coincide with the peripheral outer edge (21) of the absorbent assembly (10).

4. The underwear according to claim 1 or 2, wherein: In the one or more sealed rims (30a, 30b), the fluid seals (20a, 20b) are arranged to extend along and at a distance from the circumferential outer edge (21).

5. The underwear according to claim 4, wherein the distance is smaller than 5 mm, such as smaller than 2 mm, such as smaller than 1 mm.

6. Underwear according to any one of the preceding claims, wherein the one or more fluid seals (20a, 20b) comprise a fluid-tight joint.

7. Underwear according to claim 6, wherein the wearer-facing top layer (15) and the moisture barrier (12) are directly joined by at least one of the fluid-tight joints (20a, 20b).

8. An underwear according to any one of claims 6 or 7, wherein the top layer (15) facing the wearer, the moisture barrier (12) and one or more of the one or more intermediate layers (11, 16) are joined by at least one of the fluid-tight joints (20a, 20b).

9. Underwear according to any one of the preceding claims, wherein at least one of the one or more fluid seals (20a, 20b) comprises a fluid sealing member.

10. The undergarment of claim 9, wherein the fluid sealing member is an elastic band.

11. Underwear according to any one of the preceding claims, wherein at least one of the one or more unsealed rims (30c, 30d) comprises at least one non-fluid-tight joint (20c, 20d).

12. The undergarment according to any one of the preceding claims, wherein at least one of the one or more fluid-tight joints and / or the one or more non-fluid-tight joints comprises a mechanical joint, such as a seam.

13. An underwear according to any one of the preceding claims, wherein the one or more unsealed edge portions include a front edge portion (30c), wherein the peripheral outer edge (21) of the absorbent assembly (10) faces the front portion (3) of the underwear (1).

14. The underwear according to any one of the preceding claims, wherein the one or more unsealed edges include a back edge (30d), wherein the peripheral outer edge (21) of the absorbent assembly (10) faces the back (4) of the underwear (1).

15. An underwear according to any one of the preceding claims, wherein the one or more sealed edge portions (30a, 30b) include a pair of sealed side edge portions (30a, 30b) positioned relative to each other and positioned on each side of the longitudinal axis (y), wherein optionally each sealed side edge portion (30a, 30b) extends longitudinally along at least a portion of the crotch region (7) of the underwear (1).

16. The underwear according to claim 15, wherein: In each sealed side margin portion (30a, 30b), at least a portion of the peripheral outer edge (21) of the absorbent assembly (10) follows the contour of the corresponding leg opening (6a, 6b) of the underwear (1).

17. Underwear according to claim 15 or 16, wherein each of the fluid seals (20a, 20b) in the sealed side margins (30a, 30b) extends continuously over a longitudinal side seal length (SSL).

18. The undergarment according to claim 17, wherein the longitudinal side seal length (SSL) is at least 5 cm, such as at least 10 cm.

19. An undergarment according to claim 17 or 18, wherein the longitudinal side seal length (SSL) is less than 45 cm, such as less than 35 cm.

20. Underwear according to any one of claims 15 to 19, wherein the circumferential edge (30) is free of fluid seals (21a, 21b) outside the sealed side edge portions (30a, 30b).

21. The undergarment according to any one of claims 15 to 20, wherein the absorbent assembly (10) is free of fluid seals (21a, 21b) outside the sealed side margins (30a, 30b).

22. The underwear according to any one of claims 15 to 21, wherein the circumferential edge (30) forms a front edge portion (30f) and / or a rear edge portion (30r), the front edge portion (30f) being the portion of the circumferential edge (30) positioned in the longitudinal direction between the frontmost longitudinal end of the sealed side edge portion (30a, 30b) and the frontmost end of the absorbent assembly (10), and the rear edge portion (30r) being the portion of the circumferential edge (30) positioned in the longitudinal direction between the rearmost longitudinal end of the sealed side edge portion (30a, 30b) and the rearmost end of the absorbent assembly (10).

23. The underwear according to claim 22, wherein the front edge portion (30f) and / or the rear edge portion (30r) comprises one or more unsealed edge portions, preferably, the front edge portion (30f) and / or the rear edge portion (30r) constitute unsealed edge portions.

24. The underwear according to claim 22 or 23, wherein in at least a portion of the front edge portion (30f) and / or the rear edge portion (30r), for example in the entire front edge portion (30f) and / or the entire rear edge portion (30r), the wearer-facing top layer (15) and / or the moisture barrier (12) extend beyond the one or more intermediate layers (11, 16).

25. The underwear according to any one of claims 22 to 24, wherein the rear edge portion (30r) has a rear edge length (RML) along the longitudinal axis (y) and / or the front edge portion (30r) has a front edge length (FML) along the longitudinal axis (y), and wherein the rear edge length (RML) and / or the front edge length (FML) is at least 2 cm, for example at least 4 cm or at least 10 cm.

26. A washable and reusable absorbent assembly (10) for underwear (1), said assembly (10) comprising a top layer (15) facing the wearer, a moisture barrier (12) and one or more intermediate layers (11, 16) superposed between said top layer (15) and said moisture barrier (12) along a height axis (z) perpendicular to said longitudinal axis (y) and said transverse axis (x), The absorbent assembly (10) defines a peripheral outer edge (21), and the absorbent assembly (10) is characterized in that: a peripheral edge (30) of the absorbent assembly (10) extending along the peripheral outer edge (21), The circumferential edge (30) comprises one or more sealed edge portions (30a, 30b), each sealed edge portion (30a, 30b) comprising a fluid seal (20a, 20b), the fluid seal (20a, 20b) providing a continuous seal along the sealed edge portion (30a, 30b) between the wearer-facing top layer (15) and the moisture barrier (12) so as to hinder fluid leakage from the area inside the circumferential edge (30) through the sealed edge portion (30a, 30b) to the outside of the circumferential outer edge (21); and the circumferential edge (30) further comprises one or more unsealed edge portions (30c, 30d).

27. A washable and reusable absorbent assembly (10) according to claim 26 in combination with any of the features of claims 2 to 15 and / or 17 to 25.

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