Physiological underpants

Abstract

The utility model provides physiological underpants which comprise an underpants body, the underpants body is provided with an outer lining layer and a leakage-proof part, the leakage-proof part comprises a skin-friendly layer, an absorption layer and a waterproof layer which are sequentially arranged in a stacked mode from inside to outside, the absorption layer is located between the skin-friendly layer and the waterproof layer, and the outer lining layer is arranged between the skin-friendly layer and the waterproof layer. The side edge of the waterproof layer is folded to the outer surface of the skin-friendly layer and is connected with the skin-friendly layer to form a side leakage prevention covered edge, the side leakage prevention covered edge is used for wrapping the edge of the skin-friendly layer and the edge of the absorption layer, and the waterproof layer is connected with the outer lining layer and is arranged on the inner side of the outer lining layer. By optimizing the layout of the skin-friendly layer, the absorption layer and the waterproof layer and adding the design of the anti-side-leakage wrapping edges, the anti-leakage performance is improved, meanwhile, the application range is widened, the requirements of different crowds can be met, and safer and more comfortable wearing experience is provided.

Description

Technical Field

[0001] This utility model relates to the field of underwear technology, and in particular to a type of menstrual underwear. Background Technology

[0002] In daily life, women rely on sanitary napkins, panty liners, or menstrual underwear to prevent menstrual blood leakage during their periods. The core functions of these products are absorption and leak prevention. However, in certain situations, such as during sleep at night, prolonged wear, or frequent activity, side leakage still bothers users and causes inconvenience. Furthermore, men or patients requiring post-operative care or urinary incontinence also need protective products with absorption and leak prevention functions. Therefore, designing underwear that meets the needs of different groups while also being comfortable and practical is essential. Although various absorbent and leak-proof products exist on the market, the following shortcomings remain:

[0003] The problem of side leakage has not been completely solved: the absorbent materials and waterproof layer design of existing menstrual underwear cannot effectively prevent side leakage, especially at night or when there is more activity, the risk of side leakage is still high.

[0004] Inadequate edge design: Traditional products do not have tight enough edge treatment, which makes the edge areas of the absorbent layer and waterproof layer prone to leakage.

[0005] Insufficient breathability and comfort: If the combination of the absorbent layer and the waterproof layer is not designed properly, it can easily affect breathability, and wearing it for a long time may cause stuffiness and skin discomfort.

[0006] Limited target audience: Existing products are mostly designed for women, neglecting the needs of men, the elderly, or postoperative patients, thus limiting their scope of use.

[0007] To address these issues, those skilled in the art have continuously researched and improved the structural design of menstrual underwear. By refining the combination of the absorbent and waterproof layers and incorporating techniques such as edge binding, the effectiveness of preventing side leakage can be further enhanced while maintaining good breathability and comfort. Summary of the Invention

[0008] To overcome the shortcomings of existing technologies, this technology proposes an improved menstrual underwear. By optimizing the layout of the skin-friendly layer, absorbent layer, and waterproof layer, and adding a leak-proof edge design, the leak-proof performance is improved, while the applicability is expanded to meet the needs of different groups and provide a safer and more comfortable wearing experience.

[0009] The technical solution adopted by this utility model to solve its technical problem is:

[0010] This utility model provides a menstrual underwear, comprising: an underwear body having an outer lining layer and a leak-proof portion, the leak-proof portion comprising a skin-friendly layer, an absorbent layer and a waterproof layer stacked sequentially from the inside to the outside, the absorbent layer being located between the skin-friendly layer and the waterproof layer, the side edge of the waterproof layer being folded to the outer surface of the skin-friendly layer and connected to the skin-friendly layer to form a leak-proof edging, the leak-proof edging being used to cover the edge of the skin-friendly layer and the edge of the absorbent layer, and the waterproof layer being connected to the outer lining layer and located inside the outer lining layer.

[0011] As an improvement to this utility model, the waterproof layer and the outer lining layer are connected by stitching, hot melt adhesive or Velcro.

[0012] As an improvement to this utility model, the middle portions of the skin-friendly layer, the absorbent layer, and the waterproof layer are kept separated by a gap.

[0013] As an improvement to this utility model, the skin-friendly layer and the absorbent layer are connected by stitching, hot melt adhesive or Velcro, and the skin-friendly layer and the waterproof layer are connected by stitching, hot melt adhesive or Velcro; or, both the skin-friendly layer and the absorbent layer are connected to the waterproof layer by stitching, hot melt adhesive or Velcro.

[0014] As an improvement of this utility model, there is a gap between the anti-leakage edging and the side edge of the outer lining layer.

[0015] As an improvement of this utility model, the underwear body further includes a front waistband, a front crotch, a back crotch, a back waistband, a front waistband edge, and a back waistband edge, wherein the front waistband, the front crotch, the back crotch, the back waistband, the front waistband edge, and the back waistband edge are connected in sequence; the leak-proof part has a front top edge, and the leak-proof part is provided to extend from the top edge of the front crotch to the bottom edge of the front crotch, wherein there is a first gap between the front top edge and the front waistband edge.

[0016] As an improvement of this utility model, the underwear body further includes a front waistband, a front crotch, a back crotch, a back waistband, a front waistband edge, and a back waistband edge, wherein the front waistband, the front crotch, the back crotch, the back waistband, the front waistband edge, and the back waistband edge are connected sequentially; the leak-proof portion has a front top edge and a back top edge, and the leak-proof portion extends from the front crotch to the back crotch; there is a second gap between the front top edge and the front waistband edge, and there is a third gap between the back top edge and the back waistband edge.

[0017] As an improvement of this utility model, the underwear body further includes a front waistband, a front crotch, a back crotch, a back waistband, a front waistband edge, and a back waistband edge, wherein the front waistband, the front crotch, the back crotch, the back waistband, the front waistband edge, and the back waistband edge are connected sequentially; the leak-proof part has a front top edge and a back top edge, and the leak-proof part extends from the front crotch, through the back crotch, to the back waistband; there is a fourth gap between the front top edge and the front waistband edge, and a fifth gap between the back top edge and the back waistband edge.

[0018] As an improvement of this utility model, the absorbent layer includes a first absorbent sheet and a second absorbent sheet stacked on the waterproof layer, with the middle portions of the first absorbent sheet and the second absorbent sheet separated by a gap.

[0019] As an improvement of this utility model, the leak-proof part includes a dividing part, which is disposed in the middle of the leak-proof part and extends from the upper side to the lower side of the leak-proof part; the dividing part divides the leak-proof part into a left leak-proof unit and a right leak-proof unit, and the dividing part pulls the leak-proof part to make the leak-proof part concave to form a cup-shaped structure.

[0020] The beneficial effects of this invention are: effective prevention of side leakage: because the leak-proof part is composed of a skin-friendly layer, an absorbent layer, and a waterproof layer stacked in sequence, especially with the side edges of the waterproof layer folded over and connected to the skin-friendly layer to form a leak-proof edging, this structure can effectively cover the edges of the skin-friendly layer and the absorbent layer, thereby preventing side leakage. This edging design further enhances the protection against side leakage, especially when the user is frequently active or sleeping at night.

[0021] Enhanced comfort: The skin-friendly layer is made of soft and breathable material that comes into direct contact with the skin, thus avoiding stuffiness and skin discomfort caused by prolonged wear. Meanwhile, the absorbent layer sandwiched between the skin-friendly and waterproof layers allows the underwear to provide excellent leak protection while maintaining absorbency, thus achieving a balance between comfort and functionality.

[0022] Sturdy Structure: The waterproof layer is connected to the outer lining and positioned inside the outer lining. This design ensures the leak-proof component remains stable during use and is not easily displaced, thus guaranteeing the continuous effectiveness of the leak-proof function. Even with prolonged wear or use in different scenarios, the leak-proof effect remains reliably guaranteed.

[0023] With this multi-layered protection and edge-sealing design, the underwear provides comprehensive leak protection while maintaining comfort, making it suitable for long-term wear and various occasions. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is an overall structural diagram of the physiological underwear of this utility model;

[0027] Figure 2 This is another perspective of the overall structure of the physiological underwear of this utility model;

[0028] Figure 3 This is another perspective of the overall structure of the physiological underwear of this utility model;

[0029] Figure 4 This is another perspective of the overall structure of the physiological underwear of this utility model;

[0030] Figure 5 This is another perspective of the overall structure of the physiological underwear of this utility model;

[0031] Figure 6 This is another perspective of the overall structure of the physiological underwear of this utility model;

[0032] Figure 7 This is an exploded schematic diagram of the physiological underwear of this utility model;

[0033] Figure 8 This is an exploded schematic diagram of the underwear body and the leak-proof part of this utility model. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] refer to Figures 1 to 8A type of menstrual underwear includes: an underwear body 1, the underwear body 1 having an outer lining layer 2 and a leak-proof part 3, the leak-proof part 3 including a skin-friendly layer 31, an absorbent layer 32 and a waterproof layer 33 stacked sequentially from the inside to the outside, the absorbent layer 32 being located between the skin-friendly layer 31 and the waterproof layer 33, the side edge of the waterproof layer 33 being folded to the outer surface of the skin-friendly layer 31 and connected to the skin-friendly layer 31 to form a leak-proof edge 34, the leak-proof edge 34 being used to cover the edge of the skin-friendly layer 31 and the edge of the absorbent layer 32, and the waterproof layer 33 being connected to the outer lining layer 2 and placed inside the outer lining layer 2.

[0036] With the above-described structure, the underwear body 1 consists of an outer lining layer 2 and a leak-proof part 3. The leak-proof part 3 adopts a multi-layer structure design, including a skin-friendly layer 31, an absorbent layer 32, and a waterproof layer 33 stacked sequentially from the inside out. The skin-friendly layer 31 is made of a soft and breathable material, directly contacting the user's skin to ensure wearing comfort; the absorbent layer 32 is located between the skin-friendly layer 31 and the waterproof layer 33, mainly used to absorb liquids, ensuring that menstrual blood or other bodily fluids can be quickly absorbed and preventing backflow; the waterproof layer 33 is used to block liquid penetration and prevent leakage.

[0037] The side edges of the waterproof layer 33 are folded over to the outer surface of the skin-friendly layer 31 and connected to the skin-friendly layer 31 by hot melt adhesive or sewing process to form a leak-proof edge 34. This leak-proof edge 34 is designed to cover the edges of the skin-friendly layer 31 and the absorbent layer 32 to prevent side leakage, especially when the user is active or sleeping at night, the risk of side leakage is effectively reduced.

[0038] Furthermore, the waterproof layer 33 is fixedly connected to the outer lining layer 2, and the waterproof layer 33 is located inside the outer lining layer 2. This structure ensures the stability of the leak-proof part 3 within the underwear body 1, preventing it from shifting and thus maintaining a long-lasting leak-proof effect. Through this multi-layered protective design, this menstrual underwear provides comprehensive leak protection for the user while ensuring comfort during extended wear.

[0039] In one embodiment, the connection between the waterproof layer 33 and the outer lining layer 2 can be achieved by stitching, hot melt adhesive bonding, or Velcro fastening to meet the needs of different usage scenarios.

[0040] When sewn together, the waterproof layer 33 is securely connected to the outer lining layer 2 along its edges using sewing thread. This method is suitable for applications requiring high mechanical strength, provides reliable fixation, and ensures that it will not easily detach during prolonged use.

[0041] In some scenarios where high waterproofing performance is required, the waterproof layer 33 and the outer lining layer 2 can be bonded together using hot melt adhesive. The hot melt adhesive, after being heated and melted, forms a strong adhesive layer between the two layers, which not only enhances waterproofing but also avoids the risk of leakage that might result from gaps in the seams.

[0042] To enable the components to be detachable and reusable, the waterproof layer 33 and the outer liner 2 can also be secured with Velcro. This method allows users to remove and install the waterproof layer at any time as needed, facilitating cleaning or replacement.

[0043] In summary, this embodiment provides three connection methods: stitching, hot melt adhesive bonding, and Velcro. These diverse connection methods not only ensure the product's strength and functionality but also enhance its flexibility and adaptability, making it suitable for use in different environments.

[0044] In one embodiment, the skin-friendly layer 31, absorbent layer 32, and waterproof layer 33 are separated by gaps in the middle. This structural arrangement allows each functional layer to function independently by maintaining gaps between them, while also increasing the breathability and comfort of the underwear. Specifically, the skin-friendly layer 31, which comes into direct contact with the skin, is made of soft material to ensure comfortable wear; the absorbent layer 32, separated from the skin-friendly layer 31 and waterproof layer 33 by gaps, can quickly absorb menstrual blood or other liquids while avoiding close contact with the skin-friendly layer 31 to reduce backflow; the waterproof layer 33, through its separate design, maintains a degree of independence, ensuring that liquid cannot penetrate to the outside.

[0045] This gap-separated structural design effectively improves breathability, avoiding the stuffiness caused by tightly fitted layers, while maintaining the softness, absorbency, and leak-proof performance of each layer. The gap in the middle also provides better cushioning space, adapting to changes in the user's body shape, making the underwear more comfortable and less prone to deformation during daily activities, thereby further improving the wearing experience and protective effect of the menstrual underwear.

[0046] In one embodiment, the skin-friendly layer 31 and the absorbent layer 32 are connected by stitching, hot melt adhesive, or Velcro, and the skin-friendly layer 31 and the waterproof layer 33 are connected by stitching, hot melt adhesive, or Velcro; or, both the skin-friendly layer 31 and the absorbent layer 32 are connected to the waterproof layer 33 by stitching, hot melt adhesive, or Velcro. Specifically, two different connection methods can be used between the skin-friendly layer 31, the absorbent layer 32, and the waterproof layer 33 to ensure the stability and functionality of each layer.

[0047] In the first method, the skin-friendly layer 31 and the absorbent layer 32 are connected by stitching or hot melt adhesive to ensure a firm bond between the two layers during use. Stitching can be done along the edges of the two layers, providing a physical connection while maintaining the materials' softness; hot melt adhesive, when heated, bonds the materials tightly, preventing liquid leakage through the seams; and Velcro provides users with flexible installation and removal capabilities, facilitating cleaning and replacement of each layer. The skin-friendly layer 31 and the waterproof layer 33 are also connected using similar stitching, hot melt adhesive, or Velcro methods to ensure the waterproof layer 33 is securely fixed to the underwear body 1 while maintaining its waterproof performance.

[0048] In the second method, both the skin-friendly layer 31 and the absorbent layer 32 are directly connected to the waterproof layer 33 via stitching, hot melt adhesive, or Velcro. In this structure, the skin-friendly layer 31 and the absorbent layer 32 are not directly connected to each other, but are respectively fixed to the waterproof layer 33. This ensures that each layer is independently fixed while also improving the structural stability of the underwear body 1 and preventing the layers from shifting during use. When connected by stitching, the stitches are evenly distributed along the edges of each layer and the waterproof layer 33 to ensure a firm connection; when connected by hot melt adhesive, the adhesive is melted by local heating to achieve a tight bond and enhance the leak-proof effect; when connected by Velcro, it provides flexible disassembly and assembly capabilities, allowing users to replace or adjust the materials of each layer as needed, and easily disassemble each layer for cleaning, ensuring the hygiene and cleanliness of the product.

[0049] Regardless of whether stitching, hot melt adhesive, or Velcro is used for connection, these designs ensure the stability and functionality of the skin-friendly layer 31, absorbent layer 32, and waterproof layer 33. In particular, the Velcro connection not only provides users with the convenience of easy disassembly and replacement of materials but also facilitates independent cleaning of each layer, enhancing the user experience and product practicality. These connection methods ensure the product's leak-proof function, breathability, and comfort, meeting users' needs in various scenarios.

[0050] In one embodiment, a certain gap is provided between the anti-leakage edging 34 and the side edge of the outer liner 2. This design, by leaving a gap between the anti-leakage edging 34 and the edge of the outer liner 2, forms an effective barrier area, further improving the leak-proof effect. Specifically, the anti-leakage edging 34 covers the edges of the skin-friendly layer 31 and the absorbent layer 32, ensuring that menstrual blood or liquid will not leak from the side edges. The gap design between the anti-leakage edging 34 and the outer liner 2 can prevent liquid from seeping to the outside along the side.

[0051] This spacing design not only provides extra protective space but also effectively prevents liquid from accumulating and overflowing at the outer edge of the underwear. This is especially important when the user is very active or wears the underwear for extended periods, ensuring that liquid won't seep through the leak-proof section 3 and onto outer clothing. Through this well-designed structure, the menstrual underwear provides efficient leak protection while maintaining overall aesthetics and comfort, ensuring the user's confidence and peace of mind in various situations.

[0052] In one embodiment, the underwear body 1 includes a front waistband 11, a front crotch 12, a back crotch 13, a back waistband 14, a front waistband edge 15, and a back waistband edge 16, which are connected sequentially to form a complete underwear structure. A leak-proof portion 3 is located in the front crotch 12 of the underwear and has a front top edge 35. The leak-proof portion 3 extends from the top edge of the front crotch 12 to its bottom edge, covering the entire area of ​​the front crotch 12 to provide effective leak protection.

[0053] Specifically, a first gap of 4 to 12 centimeters is provided between the front top edge 35 and the front waist edge 15. This gap design ensures that the position of the leak-proof part 3 effectively covers the crotch area 12, providing sufficient leak protection, without being too close to the front waist edge 15, thus maintaining the comfort and aesthetics of the underwear. This gap design also prevents the leak-proof part from being too high, which could affect the fit of the waist and the user's freedom of movement.

[0054] By placing the leak-proof part 3 in the crotch area 12 and ensuring a reasonable distance between the front top edge 35 and the front waist edge 15, the underwear of this embodiment can not only provide reliable leak protection during menstruation, but also maintain the comfort of the front waist 11, allowing the user to remain flexible and comfortable in daily activities.

[0055] In one embodiment, the underwear body 1 includes a front waistband 11, a front crotch 12, a back crotch 13, a back waistband 14, a front waistband edge 15, and a back waistband edge 16, which are connected sequentially to form a complete underwear structure. A leak-proof portion 3 extends from the front crotch 12 to the back crotch 13, covering the key protective area of ​​the underwear. The leak-proof portion 3 has a front top edge 35 and a back top edge 36, which are respectively connected to the top areas of the front crotch 12 and the back crotch 13.

[0056] Specifically, a second gap, ranging from 5 to 15 centimeters, is provided between the front top edge 35 and the front waist edge 15, while a third gap, ranging from 6 to 24 centimeters, is provided between the back top edge 36 and the back waist edge 16. The design of these second and third gaps ensures that the leak-proof portion 3 effectively covers key areas where leakage may occur during menstruation, without being too close to the front and back waist edges, thus maintaining the overall aesthetics and comfort of the underwear.

[0057] This design, with its well-proportioned second and third spacing, not only provides greater freedom of movement but also avoids the feeling of restriction that might result from the leak-proof part 3 extending too high. Especially in the front waist 11 and back waist 14 areas, users can experience a better fit and comfort. The moderate extension of the leak-proof part 3 ensures effective protection for the front crotch 12 and back crotch 13, making it suitable for users of different body types to use during menstruation, sleep, or exercise, providing comprehensive and reliable protection.

[0058] In one embodiment, the underwear body 1 includes a front waistband 11, a front crotch 12, a back crotch 13, a back waistband 14, a front waistband edge 15, and a back waistband edge 16, which are connected sequentially to form an integral structure. The leak-proof part 3 extends from the front crotch 12 through the back crotch 13 to the back waistband 14, covering the front and back crotches and part of the waist area, further improving the leak-proof effect.

[0059] A fourth gap, ranging from 2 to 15 cm, is provided between the front top edge 35 and the front waist edge 15 of the leak-proof part 3; a fifth gap, ranging from 0.5 to 5 cm, is provided between the rear top edge 36 and the rear waist edge 16. This design takes into account the needs of users with heavy menstrual flow, the elderly, and postoperative patients, so that the leak-proof part 3 not only covers the front crotch area 12 and the back crotch area 13, but also extends to the lower back 14, thus providing more comprehensive protection during sleep at night or when sitting or lying down for a long time, preventing menstrual blood or other fluids from leaking to the rear.

[0060] The fourth spacing ensures that the leak-proof part 3 does not get too close to the front waist edge 15 in the front waist area, guaranteeing the comfort of the underwear and the fit around the waist. The fifth spacing design makes the height of the leak-proof part 3 extending to the back waist 14 just right, providing sufficient back leak protection without affecting the movement and comfort of the back waist.

[0061] This leak-proof section 3 extends to the lower back 14, providing extra protection for users with heavy menstrual flow. It is especially suitable for use on days with heavy flow or at night, further reducing the risk of leakage and ensuring that users are adequately protected in daily life and while sleeping.

[0062] In one embodiment, the absorbent layer 32 comprises a first absorbent sheet 321 and a second absorbent sheet 322 stacked on top of each other, and they are disposed together on top of the waterproof layer 33. To optimize breathability and absorption effect, the middle portions of the first absorbent sheet 321 and the second absorbent sheet 322 are separated by a gap. This design allows air to circulate between the two absorbent sheets, thereby improving the overall breathability of the absorbent layer 32 and avoiding skin discomfort caused by stuffiness or moisture accumulation.

[0063] Meanwhile, the gap separation design also enhances the dispersion ability of the absorbent layer 32, allowing the liquid to quickly diffuse to the second absorbent layer 322 after being absorbed by the first absorbent layer 321, and forming an effective buffer between the two absorbent layers to prevent backflow of liquid. This double-layer absorbent layer structure not only improves the liquid absorption efficiency but also ensures the comfort of menstrual underwear during prolonged wear.

[0064] Through the optimization of this structure, the breathability and absorption effect of the absorbent layer 32 are significantly improved, enabling the underwear to maintain good breathability while providing leak protection, making it particularly suitable for long-term wear or frequent activities.

[0065] In one embodiment, the leak-proof portion 3 is specifically designed for male users and includes a dividing portion 37. This dividing portion 37 is located in the middle of the leak-proof portion 3 and extends from the upper side to the lower side, dividing the entire leak-proof portion 3 into a left leak-proof unit 38 and a right leak-proof unit 39. Through its unique design and tensile force, the dividing portion 37 causes the leak-proof portion 3 to concave, forming a cup-shaped structure that better adapts to the needs of male anatomy.

[0066] The cup-shaped structure not only enhances the three-dimensionality of the leak-proof part 3, but also effectively improves its leak-proof capability, especially when the user changes positions such as standing, sitting, or lying down, it can better fit and wrap around key areas. The left and right leak-proof units 38 and 39 provide leak-proof protection on the left and right sides respectively through the separation of the partition part 37, thereby preventing liquid from overflowing to the sides.

[0067] The partition 37 in this design serves to support and fix the shape of the leak-proof part 3, making it more suitable for the daily wearing needs of male users, especially during long-term activities or nighttime use, effectively preventing liquid leakage and providing greater safety and comfort.

[0068] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0069] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0070] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A type of physiological underwear, characterized in that, include: The underwear body (1) has an outer lining layer (2) and a leak-proof part (3). The leak-proof part (3) includes a skin-friendly layer (31), an absorbent layer (32) and a waterproof layer (33) stacked sequentially from the inside to the outside. The absorbent layer (32) is located between the skin-friendly layer (31) and the waterproof layer (33). The side edge of the waterproof layer (33) is folded to the outer surface of the skin-friendly layer (31) and connected to the skin-friendly layer (31) to form a leak-proof edge band (34). The leak-proof edge band (34) is used to cover the edge of the skin-friendly layer (31) and the edge of the absorbent layer (32). The waterproof layer (33) is connected to the outer lining layer (2) and placed inside the outer lining layer (2).

2. The physiological underwear according to claim 1, characterized in that, The waterproof layer (33) is connected to the outer lining layer (2) by stitching, hot melt adhesive or Velcro.

3. The physiological underwear according to claim 1, characterized in that, The middle portions of the skin-friendly layer (31), the absorbent layer (32), and the waterproof layer (33) are kept separated by a gap.

4. The physiological underwear according to claim 1, characterized in that, The skin-friendly layer (31) and the absorbent layer (32) are connected by stitching, hot melt adhesive or Velcro, and the skin-friendly layer (31) and the waterproof layer (33) are connected by stitching, hot melt adhesive or Velcro; or, the skin-friendly layer (31) and the absorbent layer (32) are both connected to the waterproof layer (33) by stitching, hot melt adhesive or Velcro.

5. A physiological underwear according to claim 1, characterized in that, There is a gap between the anti-leakage edging (34) and the side edge of the outer lining (2).

6. A physiological underwear according to claim 1, characterized in that, The underwear body (1) also includes a front waist (11), a front crotch (12), a back crotch (13), a back waist (14), a front waist edge (15), and a back waist edge (16), which are connected in sequence; the leak-proof part (3) has a front top edge (35), which is provided to extend from the top edge of the front crotch (12) to the bottom edge of the front crotch (12), and there is a first gap between the front top edge (35) and the front waist edge (15).

7. A physiological underwear according to claim 1, characterized in that, The underwear body (1) also includes a front waist (11), a front crotch (12), a back crotch (13), a back waist (14), a front waist edge (15), and a back waist edge (16), which are connected in sequence; the leak-proof part (3) has a front top edge (35) and a back top edge (36), which extends from the front crotch (12) to the back crotch (13); there is a second gap between the front top edge (35) and the front waist edge (15), and a third gap between the back top edge (36) and the back waist edge (16).

8. A physiological underwear according to claim 1, characterized in that, The underwear body (1) also includes a front waist (11), a front crotch (12), a back crotch (13), a back waist (14), a front waist edge (15), and a back waist edge (16), which are connected in sequence; the leak-proof part (3) has a front top edge (35) and a back top edge (36), which extends from the front crotch (12) through the back crotch (13) to the back waist (14); there is a fourth gap between the front top edge (35) and the front waist edge (15), and a fifth gap between the back top edge (36) and the back waist edge (16).

9. A physiological underwear according to claim 1, characterized in that, The absorbent layer (32) includes a first absorbent sheet (321) and a second absorbent sheet (322) stacked on the waterproof layer (33), with the middle portions of the first absorbent sheet (321) and the second absorbent sheet (322) separated by a gap.

10. A physiological underwear according to claim 1, characterized in that, The leak-proof part (3) also includes a partition part (37), which is located in the middle of the leak-proof part (3) and extends from the upper side to the lower side of the leak-proof part (3). The partition part (37) divides the leak-proof part (3) into a left leak-proof unit (38) and a right leak-proof unit (39), and the partition part (37) pulls the leak-proof part (3) so that the leak-proof part (3) is recessed to form a cup-shaped structure.

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