Leak-proof underwear suitable for urinary and fecal incontinence
By forming folded wings on the sides of the leak-proof bottom layer and using elastic bands to form upright edges, the leak-proof underwear achieves a close fit to the crotch skin, solving the problem of the absorbent core layer not fitting the body well in existing technologies, thus improving the leak-proof effect and user comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN CANXUAN TECHNOLOGY CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-03
AI Technical Summary
Existing leak-proof underwear has difficulty maintaining the absorbent core layer in close contact with the body during exercise, leading to liquid leakage and affecting user comfort and hygiene.
Featuring a fold-over wing design, the sides of the leak-proof bottom layer are folded up to form fold-over wings, and an elastic band forms a vertical edge on the pant body. The overall structure fits snugly against the crotch skin, with the absorbent core structure encased within to reduce liquid leakage during movement.
It improves leak-proof reliability and user comfort, reduces the risk of liquid side leakage, and enhances hygiene and safety when wearing it.
Smart Images

Figure CN224440461U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clothing technology, and in particular to a leak-proof pair of underwear suitable for urinary and fecal incontinence. Background Technology
[0002] Urinary and fecal incontinence is a common health problem among the elderly, in care settings, and patients with specific diseases, requiring comfortable and effective solutions. Existing leak-proof underwear products widely employ a multi-layered structure, including an absorbent core (typically made of absorbent cotton or similar materials), a leak-proof bottom layer (such as a polyethylene film), and an outer layer (such as a skin-friendly fabric). These layered designs aim to absorb and contain liquids through physical barriers. Specifically, in the side areas, existing technologies generally rely on seams for leak prevention, creating sealed edges on both sides of the crotch area to attempt to seal the liquid flow channels and reduce the risk of leakage.
[0003] However, this multi-layered structure and leak-proof seam mechanism have significant drawbacks. Because underwear must allow for freedom of movement during wear, a space of movement (typically 1-5 mm) is unavoidable between the absorbent core and the crotch area. This is especially true for male anatomy, making it difficult to maintain a constant, snug fit. This space inevitably shifts when the user walks, sits, or turns, preventing the seams from maintaining a continuous seal. In practice, liquids (such as urine or feces) can easily leak through this gap during movement, especially under gravity or pressure, where hydrodynamic effects exacerbate leakage. Multiple clinical test reports indicate that this design cannot completely eliminate side leakage, causing user discomfort, hygiene concerns, and frequent replacements. Given these limitations, it is necessary to develop a new leak-proof technology to eliminate movement space and achieve a closer fit, thereby improving leak-proof reliability and user comfort. Utility Model Content
[0004] The technical problem to be solved by this utility model embodiment is to provide a leak-proof underwear suitable for urinary and fecal incontinence, so as to achieve a more tightly fitting and sealed structural design, thereby improving the reliability of leak prevention and user comfort.
[0005] To solve the above-mentioned technical problems, this utility model provides a leak-proof underwear suitable for urinary and fecal incontinence, including a pant body, an absorbent core layer structure disposed in the crotch area of the pant body, and a leak-proof bottom layer. The leak-proof bottom layer is placed at the bottom of the absorbent core layer structure. The sides of the leak-proof bottom layer are folded forward from the left and right sides in the front and / or rear sections to form folding wings. The folding wings are at least partially fixedly connected to the surface of the absorbent core layer structure. The sides of the leak-proof bottom layer are sewn with elastic bands.
[0006] As a further preferred embodiment of this application, the folding wing is used to make the side of the leak-proof bottom layer form a vertical edge that fits snugly against the crotch skin when the pants are worn.
[0007] As a further preferred embodiment of this application, the side of the leak-proof bottom layer is separated from the absorbent core layer structure in the middle section, and the absorbent core layer structure is covered within the side range of the leak-proof bottom layer.
[0008] As a further preferred embodiment of this application, the absorbent core structure and the leak-proof bottom layer are connected from the front waistband of the pants body through the crotch to the back waistband.
[0009] As a further preferred embodiment of this application, the absorbent core structure includes a liquid-absorbing layer and a flow-guiding surface layer, with an edge covering the sides of the liquid-absorbing layer and the flow-guiding surface layer.
[0010] As a further preferred embodiment of this application, the liquid-absorbing layer and the flow-guiding surface layer are of equal width.
[0011] As a further preferred embodiment of this application, the two ends of the absorbent layer are fixedly disposed on the guide surface layer at a position below the waistband of the pants body.
[0012] As a further preferred embodiment of this application, the distance between the two ends of the absorbent layer and the waistband of the pants body is 2.0-4.0 cm.
[0013] As a further preferred embodiment of this application, the length of the folding wing ranges from 3.0 to 6.0 cm, and the width ranges from 1.5 to 3.0 cm.
[0014] Implementing this utility model embodiment has the following beneficial effects: This utility model forms folded wings by folding the front and rear sides of the leak-proof bottom layer, and the elastic band inside the side of the leak-proof bottom layer is stretched to form a vertical edge when worn, so that the elastic band between the front and rear of the crotch is stretched. The overall structure forms a boat shape and fits tightly to the crotch skin, and the absorbent core structure is covered in it to prevent the absorbed liquid from leaking from the seam through the gap during movement. Attached Figure Description
[0015] Figure 1 This is a schematic diagram showing the reverse side of the structure of this utility model;
[0016] Figure 2 This is a structural diagram of the leak-proof bottom layer;
[0017] Figure 3 This is a structural diagram of the leak-proof bottom layer when worn.
[0018] Figure 4 This is a schematic diagram of the absorber core structure. Detailed Implementation
[0019] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.
[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention. The present invention will be described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.
[0021] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0023] This utility model provides a leak-proof underwear suitable for urinary and fecal incontinence, comprising a pant body 1, an absorbent core structure 2, and a leak-proof bottom layer 3. The leak-proof bottom layer 3 is disposed between the pant body 1 and the absorbent core structure 2 to prevent liquid absorbed by the absorbent core structure 2 from seeping into the pant body 1. Figure 1 As shown, Figure 1 This is a schematic diagram showing the reverse side of the present invention.
[0024] Combination Figure 2 , Figure 3As shown, in this embodiment, in order to achieve good prevention of side leakage, the side of the leak-proof bottom layer 3 is folded forward from the left and right sides in the front and / or rear sections to form folded wings 4. It is possible that either the front section 31a or the rear section 31b of the side 31 is folded towards the absorbent core structure 2 to form folded wings 4. In this embodiment, both the front section 31a and the rear section 31b are folded from the bottom to the surface of the absorbent core structure 2 on the left and right sides to form folded wings 4.
[0025] Meanwhile, the side 31 of the leak-proof bottom layer 3 is sewn with an elastic band 32, so that when the pants body 1 is worn, the folding wings 4 guide the side 31 to a vertical side, and the overall structure forms a boat shape, covering the absorbent core structure 2 and making it close to the skin of the crotch.
[0026] The aforementioned upright edge, when worn in this invention, is guided by the front and rear folding wings 4, so that the middle section 31 forms an unfolded upright edge that directly adheres to the skin of the crotch area. In this way, under normal conditions, the absorbent core layer structure 2 is always within its coverage area.
[0027] To achieve the above objectives, the side of the leak-proof bottom layer 3 is separated from the absorbent core layer structure 2 in the middle section 31c, that is, the two are in an independent state. The absorbent core layer structure 2 is covered within the side range of the leak-proof bottom layer 3, that is, the width of the leak-proof bottom layer 3 is greater than the width of the absorbent core layer structure 2.
[0028] In the above, the folding width of the folding wing 4 is in the range of 1.5-3.0cm, preferably 2cm, and the longitudinal length of the folding wing 4 formed by folding is in the range of 3.0-6.0cm, preferably 5cm.
[0029] At least a portion of the bottom edge of the folding wing 4 is fixedly connected to the surface of the absorbent core structure 2 between the folding wing 4 and the leak-proof bottom layer 3. The connection method can be a stitched connection or an adhesive connection. In this embodiment, stitches 41 are used for fixing. The fixed connection only needs to ensure that its bottom end is located at the leak-proof bottom layer 3. The optimal method is that the folding wing 4 has the same width at the top and bottom.
[0030] In the connection structure between the absorbent core layer structure 2, the leak-proof bottom layer 3 and the pant body 1, both the absorbent core layer structure 2 and the leak-proof bottom layer 3 are connected from the front waistband 11 of the pant body 1 through the crotch 12 to the back waistband.
[0031] Combination Figure 4 The schematic diagram shows that the absorbent core structure 2 includes a liquid absorption layer 21 and a flow guiding surface layer 22, both of which are of equal width and are covered with edging 23 on both sides.
[0032] In order to prevent the liquid absorbed by the absorbent layer 21 from leaking out from the top, the two ends of the absorbent layer 21 are fixedly installed on the guide surface layer 11 at position 13 below the waistband of the pants body 1.
[0033] The distance between the two ends of the absorbent layer and the waistband of the pants body is 2.0-4.0cm, preferably 3cm, to prevent the liquid absorbed on the absorbent layer 21 from leaking out from the waistband.
[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.
Claims
1. A type of leak-proof underwear suitable for urinary and fecal incontinence, characterized in that, The pant body includes an absorbent core layer structure disposed in the crotch area of the pant body and a leak-proof bottom layer. The leak-proof bottom layer is placed at the bottom of the absorbent core layer structure. The sides of the leak-proof bottom layer are folded forward from the left and right sides in the front and / or rear sections to form folded wings. The folded wings are at least partially fixedly connected to the surface of the absorbent core layer structure. The sides of the leak-proof bottom layer are sewn with elastic bands.
2. The anti-leakage underwear for urinary and fecal incontinence according to claim 1, characterized in that, The folding wing is used to make the side of the leak-proof bottom layer form a vertical edge that fits snugly against the crotch skin when the pants are worn.
3. The anti-leakage underwear for urinary and fecal incontinence according to claim 2, characterized in that, The side of the leak-proof bottom layer is separated from the absorbent core layer structure in the middle section, and the absorbent core layer structure is covered within the side range of the leak-proof bottom layer.
4. The anti-leakage underwear for urinary and fecal incontinence according to claim 3, characterized in that, The absorbent core structure and the leak-proof bottom layer connect from the front waistband of the pants body through the crotch to the back waistband.
5. The anti-leakage underwear for urinary and fecal incontinence according to any one of claims 1-4, characterized in that, The absorbent core structure includes a liquid-absorbing layer and a flow-guiding surface layer, with a edging covering the sides of the liquid-absorbing layer and the flow-guiding surface layer.
6. The anti-leakage underwear for urinary and fecal incontinence according to claim 5, characterized in that, The liquid-absorbing layer and the flow-guiding surface layer are of the same width.
7. The anti-leakage underwear for urinary and fecal incontinence according to claim 6, characterized in that, The absorbent layer is fixedly disposed at both ends on the guide surface layer, located below the waistband of the pants body.
8. The anti-leakage underwear for urinary and fecal incontinence according to claim 7, characterized in that, The distance between the two ends of the absorbent layer and the waistband of the pants body is 2.0-4.0 cm.
9. The anti-leakage underwear for urinary and fecal incontinence according to claim 7, characterized in that, The length of the folding wing ranges from 3.0 to 6.0 cm, and the width ranges from 1.5 to 3.0 cm.