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CN-121986982-A - Washable absorbent undergarment

CN121986982ACN 121986982 ACN121986982 ACN 121986982ACN-121986982-A

Abstract

A washable, absorbent undergarment comprising a woven or knitted fabric having a multi-layer gusset extending at least in the crotch region of the garment. The gusset includes at least a body facing top layer, a moisture barrier layer, and a garment layer, with lateral seams joining the side edges of the layers together. The seam is formed in an everted condition and then everted such that the side edges terminate inside the gusset.

Inventors

  • P. Bromstrom
  • A knoos

Assignees

  • 爱适瑞卫生健康产品有限公司

Dates

Publication Date
20260508
Application Date
20251009
Priority Date
20241105

Claims (15)

  1. 1. A washable absorbent undergarment comprising a woven or knitted fabric having a multi-layered gusset extending at least in the crotch region of the garment, said gusset comprising at least a body-facing top layer, a moisture barrier layer and a garment layer, the side edges of the layers being joined together by lateral seams, wherein the seams are formed in an everted state such that the side edges terminate inside the gusset.
  2. 2. The garment of claim 1, wherein the seam is a stitched seam, such as a lockstitch stitched seam.
  3. 3. The garment of claim 1 or 2, wherein at the seam the garment layer is sandwiched between a barrier layer and the top layer.
  4. 4. A garment according to any of the preceding claims, wherein the barrier layer and garment layer are wider than the top layer at least in the crotch region and extend around the side edges of the gusset.
  5. 5. The garment of any one of the preceding claims, wherein the joint between the garment layer and the top layer extends along a body-facing surface of the garment.
  6. 6. A garment according to any preceding claim, wherein the gusset has a waisted shape, is narrowest at the crotch region, and is wider at the front and rear edges.
  7. 7. A garment according to any preceding claim, wherein the garment layer extends beyond the lining.
  8. 8. The garment of claim 7, wherein the garment layer comprises a single piece of fabric extending through the undergarment.
  9. 9. The garment of any one of claims 1 to 7, wherein the garment layer is connected to a further piece of fabric to form the undergarment.
  10. 10. The garment of any of the preceding claims, comprising leg elastics extending along the seams.
  11. 11. The garment of any of the preceding claims, wherein the liner further comprises an absorbent core layer between the top layer and the moisture barrier layer.
  12. 12. The garment of any one of the preceding claims, wherein a strip of hydrophobic material is located between the garment layer and the top layer at the lateral seam.
  13. 13. A multi-layer gusset for a washable absorbent undergarment comprising a woven or knitted fabric, said gusset comprising at least a body-facing top layer, a moisture barrier layer and a garment layer, the side edges of the layers being joined together by lateral seams, wherein the seams are formed in an everted state such that the side edges terminate inside the gusset.
  14. 14. A method of making a multi-layer gusset for a washable absorbent undergarment, the multi-layer gusset comprising a woven or knitted fabric, the method comprising: a. Providing a stack comprising, in order, a moisture barrier layer, a garment layer, a body facing top layer, and an optional absorbent core layer; b. Joining the side edges of the layers together to form a lateral seam, and C. The gusset is everted such that the top layer and the garment layer are outermost.
  15. 15. The method of claim 14, further comprising attaching the garment layer to an additional piece of fabric of garment material or itself to form an undergarment.

Description

Washable absorbent undergarment Technical Field The present disclosure relates to washable absorbent undergarments comprising an integral absorbent assembly in the form of a liner. Such articles are intended for re-usable hygienic use for absorbing body fluids such as urine and vaginal fluids. The present disclosure also relates to such liners and methods of making the same. Background Washable absorbent undergarments can be worn for absorbing body fluids such as urine and vaginal fluids. Such garments form an environmentally and economically advantageous alternative to disposable sanitary napkins and disposable absorbent undergarments. Washable absorbent undergarments typically include a fabric sheet of woven or knitted material. Typically, such washable absorbent undergarments will also include a unitary absorbent assembly, sometimes referred to as a gusset, that is positioned in the crotch region of the wearer when the undergarment is worn. After use, the absorbent undergarment is washed or laundered prior to reuse. In general, it is desirable that garments can be laundered and reused at least 10 times without disintegration. An example of such washable absorbent undergarments is found in WO2023169665A1. The size and configuration of the liner may vary depending on the intended use. It may extend over a smaller or larger area of the garment, for example depending on whether it is intended for daytime or nighttime use. It may also be thicker or thinner with additional wicking, distribution, barrier and absorbent layers. However, in addition to functioning from an absorption standpoint, the resulting undergarment must also be confident and comfortable to wear for extended periods of time, as well as provide good fit and aesthetics. It should also be reusable many times without significant degradation in color, shape, elasticity or construction. Joining the different layers of the liner together and to the garment material is one of the major challenges in developing such undergarments. Although such garments are reusable many times, in order to be competitive in changing other solutions, the garment must be simple and cost effective to produce, and sufficiently resistant to leakage. In particular, stitching through the layers may cause leakage thereof. Manufacturing procedures such as external seams and tapes for conventional garments are available, but are not always convenient. Accordingly, it is desirable to improve the construction of such undergarments and components thereof. Disclosure of Invention This object is at least partly achieved with a washable absorbent undergarment according to claim 1, a multilayer interlining according to claim 13 and a method of manufacturing a multilayer interlining according to claim 14, and further details are set forth in the dependent claims and in the following description. Accordingly, the present disclosure is directed to a washable absorbent undergarment including a woven or knitted fabric having a multi-layer gusset extending at least through the crotch region of the garment. The liner includes at least a body facing top layer, a moisture barrier layer, and a garment layer, with side edges of each layer joined together by lateral seams. The seam is formed in the everted condition of the liner such that once the liner is inverted to its in-use position, the side edges terminate inside the liner and the barrier layer seals the edges forming the liner. In this context, the term gusset is used to refer to what may form the crotch panel of a garment, stretching from the front side of the garment to the back side of the garment between the legs of the user. In some cases, this may be referred to as an integrated absorbent assembly, but the term may exclude the garment layer itself. Furthermore, the term eversion is different from terms such as inversion or inside-out inversion (these terms may refer to the undergarment from inside to outside). Eversion is the case for tubular structures that are turned inside out by passing the complete structure through its own lumen or opening. Liners having only side edges that are joined together form such tubular structures. It should be noted that it forms a plurality of potential lumens or openings between each pair of adjacent layers. Due to the eversion of the proposed gusset, the seam and in particular the side edges extending beyond the seam are located inside the gusset and are not exposed to the outside of the garment. Eversion occurs at the cavity corresponding to the top layer such that the top layer forms the body-facing surface of the undergarment. As used herein, the term "absorbent undergarment" refers to a garment that is worn and intended to be placed against the skin of a wearer, having the intended function of absorbing and containing bodily fluids such as urine and vaginal fluids (including menstrual fluids) without having a significantly visible external trace. The undergarment may be, for example, a fabric