Leakage-proof underpants
By using multiple layers of absorbent cotton fabric and a waterproof layer in the underwear, the problem of leakage in existing underwear has been solved, achieving better leak prevention and wearing stability, and meeting the needs of menstruation.
Patent Information
- Application Number
- CN202423013788.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-07
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-07
AI Technical Summary
Existing incontinence underwear and menstrual underwear are prone to side or back leakage, causing inconvenience and embarrassment, especially in public places.
A leak-proof underwear was designed, which adopts a multi-layer absorbent cotton fabric layer and waterproof layer structure, including a first absorbent cotton fabric layer, a water storage layer and a second absorbent cotton fabric layer, as well as a polyester-coated waterproof layer, to increase the coverage area and improve the leak-proof effect. The waterproof elastic strips and rubber bands are combined to enhance the structural stability.
Effectively prevents liquid leakage, keeps skin dry, enhances wearing stability and comfort, reduces odor, improves leak-proof performance, and is suitable for menstrual discomfort.
Smart Images

Figure CN223745813U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to underpants technical field, especially a kind of leakage-proof underpants. BACKGROUND
[0002] At present, some old people, pregnant women, postoperative patients and certain disease patients can appear urinary incontinence (referring to urine involuntaryly outflows). Urinary incontinence patients need to wear incontinence underpants to solve urinary incontinence problem. Female also needs to use physiological underpants during menstrual period, and physiological underpants is added with a layer of waterproof and sweat-permeable fabric on the bottom and rear part of underpants, so that water cannot permeate, sweat can permeate, and female menstrual side and rear leakage can be prevented.
[0003] However, both incontinence underpants and physiological underpants can still appear side leakage or rear leakage, sometimes leakage can even contaminate trousers, and it is particularly embarrassing to appear in public place without discovery. CONTENT OF UTILITY MODEL
[0004] The utility model wants to solve the problem to provide a kind of leakage-proof underpants, and this leakage-proof underpants can increase the area of leakage-proof area, and the effect of leakage prevention is good.
[0005] In order to solve the above technical problem, the technical scheme adopted by the utility model is as follows:
[0006] A kind of leakage-proof underpants, including front piece, crotch piece and back piece, front piece, crotch piece and back piece jointly constitute underpants body;Its characterized in that: it further includes the functional layer of leakage prevention, functional layer is sewn on the inner surface of the underpants body and from the upper portion of the front piece extends to the upper side edge of back piece through crotch piece;Functional layer includes first water-absorbing cotton cloth layer, at least one water storage layer and second water-absorbing cotton cloth layer arranged in order from inside to outside, and first waterproof layer is coated on the outer surface of second water-absorbing cotton cloth layer.
[0007] The upper side edge of the functional layer on the front side is raised to the upper part of the front panel, the thickness of the functional layer can thicken the thickness of the upper part of the front panel, the upper part of the functional layer can be closer to the position of the uterus, and the position of the uterus of the woman can be kept warm to relieve the uncomfortable physiological reaction during the menstrual period; the upper side edge of the functional layer on the back side is raised to the upper side edge of the back panel, which can greatly increase the coverage area of the functional layer on the back of the underpants body, preventing liquid from leaking back. The first absorbent cotton cloth layer can quickly absorb liquid and transfer the liquid from the skin surface to the water storage layer, thereby reducing direct contact between the skin and the liquid and keeping the skin dry. The water storage layer is used to store the liquid transferred from the first absorbent cotton cloth layer. The second absorbent cotton cloth layer can further absorb the liquid that the water storage layer fails to completely absorb, and at the same time acts as a buffer layer for the first waterproof layer to prevent the liquid from directly contacting the first waterproof layer. The first waterproof layer can ensure that the liquid does not penetrate to the outside of the underpants, protecting the outer clothes from being contaminated.
[0008] The water storage layer can be designed as a multi-layer structure to increase the storage capacity of the liquid and ensure that no leakage occurs during long-term use.
[0009] In a preferred embodiment, the first waterproof layer is a polyester coating. The polyester coating can form a waterproof film on the surface through its special processing technology, preventing water from penetrating. This polyester coating usually has good air and water permeability, can timely discharge the water vapor under the waterproof layer, keep the waterproof layer dry, and thus prolong the service life of the waterproof layer.
[0010] In a preferred embodiment, a water-absorbing velvet layer is arranged on the inner surface of the water storage layer. The water-absorbing velvet layer can increase the thickness of the water storage layer, so that the water storage layer can absorb more water and play a better water storage role, avoiding leakage of the underpants.
[0011] In a preferred embodiment, a waterproof elastic convex strip is sewn at the edge of the leg opening of the underpants body, and the inner surface of the waterproof elastic convex strip covers the edges of the front panel, the edge of the crotch panel, the edge of the back panel, and the edge of the functional layer. Sewing a waterproof elastic convex strip at the edge of the leg opening of the underpants body can effectively increase the strength of the leg opening of the underpants body, while ensuring that the leg opening of the underpants body is tightly attached to the thigh during wearing, without folding during movement to affect comfort and reducing running position to increase stability during wearing. The inner surface of the waterproof elastic convex strip covers the edges of the front panel, the edge of the crotch panel, the edge of the back panel, and the edge of the functional layer, which can further enhance the overall structure of the underpants and prevent liquid from leaking from the leg opening edge of the underpants body.
[0012] In a further preferred embodiment, a second waterproof layer is coated on the inner surface of the waterproof elastic convex strip. Through this arrangement, the waterproof effect can be further enhanced to ensure that the liquid does not seep out from the leg opening edge of the underpants body.
[0013] In a further preferred aspect, the second water-proof layer is a polyester coating.
[0014] In a preferred aspect, the distance between the upper side edge of the functional layer and the upper side edge of the front panel is 2.0-8.0 cm. With this arrangement, the upper part of the functional layer can be made closer to the location of the uterus, and at the same time, the coverage area of the functional layer can be ensured to be large enough to effectively prevent liquid from leaking from the upper part of the front panel.
[0015] In a preferred aspect, an elastic band is sewn on the waist edge of the underpants body. The elastic band can provide appropriate elasticity, so that the waist of the underpants can be made to fit the waist more closely, and the comfort of wearing can be increased.
[0016] In a preferred aspect, a plurality of air-permeable holes are provided on the front panel, the crotch panel and the back panel. The air-permeable holes can increase the air permeability of the underpants, reduce the accumulation of moisture, keep the skin dry, and reduce odor and skin problems.
[0017] In a preferred aspect, the front panel, the crotch panel and the back panel are cut integrally from one piece of cloth. The integral cutting design of the underpants can enhance the overall structure of the underpants, reduce the sewing lines, improve the comfort of the underpants, and reduce the looseness and deformation that can be caused by multiple pieces of sewing.
[0018] Compared with the prior art, the utility model has the following advantages:
[0019] The leakage-proof underpants raise the upper side edge of the front side of the functional layer to the upper part of the front panel, the thickness of the functional layer can thicken the thickness of the upper part of the front panel, the upper part of the functional layer can be made closer to the location of the uterus, the location of the uterus of the woman can be kept warm, and the uncomfortable physiological reactions during the menstrual period can be alleviated; the upper side edge of the back side of the functional layer is raised to the upper side edge of the back panel, the coverage area of the functional layer in the rear part of the underpants body can be greatly increased, the area of the leakage-proof area can be increased, and the leakage-proof effect is good. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is the structure schematic view of the embodiment 1 of the utility model;
[0021] Figure 2 is the structure schematic view of the catheter body in the utility model;
[0022] Figure 3 is Figure 1 the structure schematic view of A-A in the utility model;
[0023] Figure 4 is the structure schematic view of the embodiment 2 of the utility model. DETAILED DESCRIPTION
[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0025] Example 1, such as Figures 1-3 As shown, the leak-proof underwear in this embodiment includes a front piece 1, a crotch piece 2, a back piece 3, and a leak-proof functional layer 4. The front piece 1, the crotch piece 2, and the back piece 3 together constitute the underwear body 5. The functional layer 4 is sewn onto the inner surface of the underwear body 5 and extends from the upper part of the front piece 1 through the crotch piece 2 to the upper edge of the back piece 3. The functional layer 4 includes a first absorbent cotton layer 41, at least one water-retaining layer 42, and a second absorbent cotton layer 43 arranged sequentially from the inside to the outside. The outer surface of the second absorbent cotton layer 43 is coated with a first waterproof layer 44.
[0026] The aforementioned functional layer 4 extends from the upper part of the front piece 1 through the crotch piece 2 to the upper edge of the back piece 3. Raising the upper edge of the front side of the functional layer 4 to the upper part of the front piece 1 increases the thickness of the upper part of the front piece 1, allowing the upper part of the functional layer 4 to be closer to the location of the uterus, thus providing warmth to the uterus and alleviating discomfort during menstruation. Raising the upper edge of the rear side of the functional layer 4 to the upper edge of the back piece 3 significantly increases the coverage area of the functional layer 4 at the back of the underwear body 5, preventing leakage. The aforementioned first absorbent cotton layer 41 quickly absorbs liquid, transferring it from the skin surface to the water-retaining layer 42, thereby reducing direct contact between the skin and liquid and keeping the skin dry. The aforementioned water-retaining layer 42 stores the liquid transferred from the first absorbent cotton layer 41. The second absorbent cotton layer 43 further absorbs liquid that the water storage layer 42 fails to fully absorb, and at the same time serves as a buffer layer for the first waterproof layer 44, preventing liquid from directly contacting the first waterproof layer 44. The first waterproof layer 44 ensures that liquid does not penetrate to the outside of the underwear, protecting the outer clothing from contamination.
[0027] The aforementioned water storage layer 42 can be designed as a multi-layer structure to increase the liquid storage capacity and ensure that no leakage occurs during long-term use.
[0028] The first waterproof layer 44 is a polyester coating. Through its special processing technology, this polyester coating forms a waterproof membrane on the surface, preventing moisture penetration. This polyester coating typically has good breathability and water permeability, allowing moisture to escape from beneath the waterproof layer in a timely manner, keeping the waterproof layer dry and thus extending its lifespan.
[0029] The inner surface of the water storage layer 42 is provided with an absorbent fleece layer 45. The absorbent fleece layer 45 can increase the thickness of the water storage layer 42, enabling the water storage layer 42 to absorb more water, thus playing a better role in water storage and preventing leakage of underwear.
[0030] The leg opening edge of the underpants body 5 is sewn with a waterproof elastic strip 6, and the inner surface of the waterproof elastic strip 6 covers the edges of the front piece 1, the edges of the crotch piece 2, the edges of the back piece 3, and the edges of the functional layer 4. Sewing a waterproof elastic strip 6 at the leg opening edge can effectively increase the strength of the leg opening edge of the underpants body 5, while ensuring that the leg opening edge of the underpants body 5 is tightly attached to the thigh when worn, and does not fold during exercise, which affects comfort and reduces running position and increases stability when worn. The inner surface of the waterproof elastic strip 6 covers the edges of the front piece 1, the edges of the crotch piece 2, the edges of the back piece 3, and the edges of the functional layer 4, which can further enhance the overall structure of the underpants and prevent liquid from leaking from the leg opening edge of the underpants body 5.
[0031] The distance between the upper edge of the functional layer 4 and the upper edge of the front piece 1 is 2.0-8.0 cm. By this arrangement, the upper part of the functional layer 4 can be closer to the location of the uterus, and the coverage area of the functional layer 4 can be ensured to be large enough to effectively prevent liquid from leaking from the upper part of the front piece 1.
[0032] An elastic band 7 is sewn on the waist edge of the underpants body 5. The elastic band 7 can provide appropriate elasticity, making the waist of the underpants more closely fit the waist, increasing the comfort of wearing.
[0033] A plurality of air holes 51 are provided on the front piece 1, the crotch piece 2, and the back piece 3. The air holes 51 can increase the air permeability of the underpants, reduce moisture accumulation, keep the skin dry, reduce odor and skin problems.
[0034] The front piece 1, the crotch piece 2, and the back piece 3 are cut from a single piece of cloth. The one-piece cutting design of the underpants can enhance the overall structure of the underpants, reduce the number of stitches, improve the comfort of the underpants, and reduce the possibility of loosening and deformation due to multiple pieces of stitching.
[0035] Example 2, as shown in Figure 4 The inner surface of the waterproof elastic strip 6 is coated with a second waterproof layer 61. This arrangement can further enhance the waterproof effect and ensure that liquid does not seep from the leg opening edge of the underpants body 5.
[0036] The second waterproof layer 61 is a polyester coating.
[0037] In addition, it should be noted that the specific embodiments described in the specification, the name of each part, etc. can be different, and any equivalent or simple change made in accordance with the structure, features and principles described in the utility model patent concept is included in the protection scope of the utility model patent. The skilled in the art to which the present application belongs can make various modifications or supplements or adopt similar ways to replace the described specific embodiments, as long as it does not deviate from the structure of the utility model or beyond the scope defined in the claims, which shall belong to the protection scope of the utility model.
Claims
1. A leak-proof underwear, comprising a front panel, a crotch panel, and a back panel, wherein the front panel, crotch panel, and back panel together constitute the underwear body; characterized in that: It also includes a leak-proof functional layer, which is sewn onto the inner surface of the underwear body and extends from the upper part of the front piece through the crotch piece to the upper edge of the back piece; the functional layer includes a first absorbent cotton layer, at least one water-retaining layer and a second absorbent cotton layer arranged sequentially from the inside to the outside, and the outer surface of the second absorbent cotton layer is coated with a first waterproof layer.
2. The leak-proof underwear as described in claim 1, characterized in that: The first waterproof layer is a polyester coating.
3. The leak-proof underwear as described in claim 1, characterized in that: The inner surface of the water storage layer is provided with a water-absorbing fluff layer.
4. The leak-proof underwear as described in claim 1, characterized in that: A waterproof elastic convex strip is sewn around the leg area of the underwear body, and the inner surface of the waterproof elastic convex strip covers the edge of the front piece, the edge of the crotch piece, the edge of the back piece, and the edge of the functional layer.
5. The leak-proof underwear as described in claim 4, characterized in that: A second waterproof layer is coated on the inner surface of the waterproof elastic protrusion.
6. The leak-proof underwear as described in claim 5, characterized in that: The second waterproof layer is a polyester coating.
7. The leak-proof underwear as described in claim 1, characterized in that: The distance between the upper edge of the functional layer and the upper edge of the front piece is 2.0cm-8.0cm.
8. The leak-proof underwear as described in any one of claims 1-7, characterized in that: The waistband of the underwear is sewn with an elastic band.
9. The leak-proof underwear as described in any one of claims 1-7, characterized in that: The front panel, crotch panel, and rear panel are all provided with multiple ventilation holes.
10. The leak-proof underwear as described in any one of claims 1-7, characterized in that: The front panel, crotch panel, and back panel are cut from a single piece of fabric.