Leakage-proof menstrual period trousers

Abstract

The utility model relates to the technical field of underpants, in particular to leakage-proof menstrual period pants. The leakage-proof menstrual period trousers comprise a penetrating layer, an infiltration layer, an absorption layer and a diffusion layer which are sequentially attached together from top to bottom, and the porosity of the penetrating layer, the porosity of the infiltration layer, the porosity of the absorption layer and the porosity of the diffusion layer are sequentially arranged from high to low. According to the leakage-proof menstrual period trousers, the four-layer structure with the porosity from high to low is used, menstrual blood can be stacked layer by layer from top to bottom, the menstrual blood can be diffused to the whole length of the bottom of the core body to the maximum extent, the utilization rate of the core body is increased, and it is avoided that the menstrual blood is intensively absorbed in the middle of the absorber, and liquid leakage is caused.

Description

Technical Field

[0001] This application relates to the technical field of underwear, and particularly to a leak-proof menstrual pants. Background Art

[0002] Menstrual pants, also known as physiological pants, are underwear designed specifically for women's special physiological periods, that is, special underwear for women's menstrual periods, and are a very popular and prevalent type of sanitary care product at present. Since menstrual pants are designed for people with heavy menstrual flow, the requirement for leak prevention is very high. The main product structures of current menstrual pants on the market are a closed body and an absorbent body. To prevent liquid side leakage and back leakage, the most important thing is to rely on the absorption capacity of the absorbent body worn in the crotch of the human body.

[0003] The absorbent body structures of most current menstrual pants on the market are a surface layer, a diversion layer, fluff pulp, and a superabsorbent resin. The main function of the surface layer is to quickly capture the liquid, transfer it downward, and prevent the absorbed liquid from flowing back. The main purpose of the diversion layer is to accelerate the downward seepage rate of menstrual blood. The main component of fluff pulp is plant fiber. Fluff pulp can quickly absorb liquid, but the rigidity of the material decreases and it is prone to deformation after absorption, and the ability to hold liquid becomes low. Superabsorbent resin is a polymer of acrylic acid. Superabsorbent resin can lock water, has strong liquid retention after absorption, and can greatly increase the absorption capacity, but the absorption speed is slower than that of fluff pulp. Generally, fluff pulp and polymers are used in combination to achieve the purpose of absorbing menstrual blood and being saturated with blood.

[0004] For the absorbent body of current conventional menstrual pants, menstrual blood seeps through the surface layer to the diversion layer and is then absorbed by fluff pulp and superabsorbent resin, and the liquid can be fixed in the fluff pulp and polymer region. However, the diffusion ability of fluff pulp and polymers is very poor. After the menstrual blood reaches the fluff pulp and polymer layer, it is firmly locked, and the liquid is concentrated in the middle part for absorption. Once the menstrual flow is very large and there are repeated surges, the absorption capacity of the middle part is limited, and the liquid will float above the surface layer. When the liquid volume increases, the menstrual blood above the surface layer is more likely to spread to both sides, resulting in a higher probability of leakage.

[0005] In addition, although the absorbent body of menstrual pants is longer than that of sanitary napkins, the problem of liquid leakage in menstrual pants has always existed. Simply increasing the length of the absorbent body without considering the forward and backward diffusion of the liquid and maximizing the utilization rate of the absorbent body, in the case of heavy menstrual flow, the absorption capacity of the absorbent body is limited, and the liquid leakage of menstrual pants will increase.

[0006] Therefore, this application provides a leak-proof menstrual pants. Utility Model Content

[0007] In order to overcome the deficiencies of the prior art, for a leak-proof menstrual pants described in this application, by using a four-layer structure with gradually decreasing porosity from top to bottom, menstrual blood can be stacked layer by layer from top to bottom, and can be maximally diffused to the entire length of the bottom of the core body, increasing the utilization rate of the core body, avoiding the concentrated absorption of menstrual blood in the middle part of the absorbent body and causing leakage. Therefore, the leak-proof menstrual pants not only improve the absorption efficiency, reduce the risk of leakage, but also enhance the air permeability and dryness of the product, improving the user experience.

[0008] The technical solution adopted by this application to solve its technical problems is:

[0009] A leak-proof menstrual pants, comprising a penetration layer, a seepage layer, an absorption layer, and a diffusion layer that are sequentially attached together from top to bottom, and the porosity of the penetration layer, the seepage layer, the absorption layer, and the diffusion layer is sequentially set from high to low.

[0010] Through the above technical solution, the use of the four-layer structure of the penetration layer, the seepage layer, the absorption layer, and the diffusion layer can make menstrual blood stack layer by layer from top to bottom, and can maximally diffuse menstrual blood to the bottom of the absorption layer, increasing the utilization rate of the absorption layer, and avoiding the concentrated absorption of menstrual blood in the middle part of the absorbent body and causing leakage.

[0011] Preferably, the materials of the penetration layer, the seepage layer, the absorption layer, and the diffusion layer are all porous materials.

[0012] Preferably, the material of the penetration layer is non-woven fabric.

[0013] Preferably, the material of the seepage layer is non-woven fabric.

[0014] Preferably, the absorption layer is fluff pulp or cotton fiber.

[0015] Preferably, the diffusion layer is non-woven fabric or dust-free paper.

[0016] Preferably, the porosity of the penetration layer, the seepage layer, the absorption layer, and the diffusion layer is 75-85%, 60-70%, 45-55%, and 15-25% in sequence.

[0017] Preferably, perforations or grooves are provided on the absorption layer.

[0018] Preferably, the perforations or grooves are distributed on the left side and both sides or the front side and the rear side of the absorption layer. Through the above technical solution, the perforations or grooves can act as a "moat" to intercept menstrual blood and prevent it from spreading to the edge, thereby reducing the risk of leakage.

[0019] Preferably, the perforations or grooves can be arranged continuously or discontinuously. Through the above technical solution, continuous arrangement can provide a more uniform liquid distribution, while discontinuous arrangement may help improve air permeability, and both can improve the absorption efficiency and reduce liquid leakage.

[0020] The beneficial effects of this application are as follows:

[0021] 1. For the leak-proof menstrual pants described in this application, by using a four-layer structure with gradually decreasing porosity from top to bottom, menstrual blood can be stacked layer by layer from top to bottom, which can spread menstrual blood to the full length of the bottom of the core body to the greatest extent, increasing the utilization rate of the core body and avoiding the concentrated absorption of menstrual blood in the middle part of the absorbent body, resulting in liquid leakage.

[0022] 2. For the leak-proof menstrual pants described in this application, by providing perforations or grooves on the absorption layer, the utilization rate of the absorption layer is maximized, and the risk of liquid leakage is reduced. At the same time, menstrual blood will not concentrate in the middle part of the absorption layer, the residual amount of menstrual blood in the penetration layer is smaller, and the dryness is better; furthermore, because the absorption layer is designed with perforations or grooves, the air permeability of the product will be stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following further illustrates this application with reference to the drawings and embodiments.

[0024] Figure 1 is a schematic structural diagram of a leak-proof menstrual pants described in this application;

[0025] Figure 2 is another schematic structural diagram of a leak-proof menstrual pants described in this application;

[0026] Figure 3 is a schematic diagram of a leak-proof menstrual pants absorbing menstrual blood described in this application;

[0027] Figure 4 is a schematic structural diagram of the absorption layer described in this application;

[0028] Figure 5 is a schematic diagram of the complete structure of a leak-proof menstrual pants described in this application;

[0029] Among them: 1. Penetration layer; 2. Infiltration layer; 3. Absorption layer; 4. Diffusion layer; 31. Perforation; 32. Groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The concept, specific structure, and technical effects of this application will be clearly and completely described below in combination with embodiments and the accompanying drawings to fully understand the purpose, features, and effects of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all embodiments. Based on the embodiments of this application, other embodiments obtained by those skilled in the art without creative efforts all fall within the scope of protection of this application. In addition, all connection / linkage relationships involved in the patent do not simply refer to direct connection of components, but rather refer to the formation of a more optimal connection structure by adding or reducing connection accessories according to specific implementation situations. Each technical feature in this application can be interactively combined on the premise of not conflicting with each other.

[0031] To address the possible liquid leakage problem during the use of menstrual pants, this application provides Figures 1-5 A leak-proof menstrual pant, comprising a penetration layer 1, a seepage layer 2, an absorption layer 3, and a diffusion layer 4 that are sequentially bonded together from top to bottom. The porosity of the penetration layer 1, seepage layer 2, absorption layer 3, and diffusion layer 4 is set in decreasing order from top to bottom.

[0032] In this application, the porosity or density of the material directly reflects the degree of compactness of the material. A high porosity of the material indicates a small degree of compactness. The use of the four-layer structure of the penetration layer 1, seepage layer 2, absorption layer 3, and diffusion layer 4 enables menstrual blood to spread from top to bottom and stack layer by layer, maximizing the spread of menstrual blood to the bottom of the absorption layer, increasing the utilization rate of the absorption layer, and avoiding the concentrated absorption of menstrual blood in the middle part of the absorbent body, thereby preventing liquid leakage.

[0033] In one embodiment, as Figures 2-3 shown, the materials of the penetration layer 1, seepage layer 2, absorption layer 3, and diffusion layer 4 are all porous materials. The porosity decreases from top to bottom, forming a structural gradient from sparse to dense, enabling menstrual blood to spread from top to bottom, and the menstrual blood can cover the bottom layer of the absorption layer / absorbent body.

[0034] In one embodiment, the material of the penetration layer 1 is non-woven fabric. According to fiber classification, the penetration layer can be made of pure cotton fiber, viscose fiber, ES fiber, or a mixture of several fibers. Using non-woven fabric material can provide good air permeability and softness. At the same time, the selection of different fibers can adjust the water absorption and strength of the penetration layer as needed. The porosity is between 75 - 85%, ensuring a relatively high liquid conduction ability.

[0035] In one embodiment, the material of the seepage layer 2 is non-woven fabric. Generally, it includes ES fiber, viscose fiber, or PP fiber. The porosity of the seepage layer is between 60 - 70%, slightly lower than that of the penetration layer, which helps the liquid transition smoothly from the penetration layer to the absorption layer, reduces backflow, and improves comfort.

[0036] In one embodiment, the absorbent layer 3 is fluff pulp or cotton fiber. Fluff pulp or cotton fiber has high water absorbency, can quickly absorb and lock in liquid, and has a porosity of 45 - 55%, ensuring good absorption performance.

[0037] In one embodiment, the diffusion layer 4 is non - woven fabric or dust - free paper. The non - woven fabric can be pure cotton spunlace non - woven fabric, adhesive spunlace non - woven fabric, needle - punched non - woven fabric or thermally - bonded non - woven fabric. The porosity of the diffusion layer is 15 - 25%. The lower porosity helps to evenly diffuse the liquid along the entire length (whole) of the absorbent layer, reducing the risk of local saturation and leakage. The dust - free paper can be heat - sealed paper or glued (dust - free) paper.

[0038] However, the use of the four - layer structure, although it can spread menstrual blood to the bottom full length of the absorbent layer, in the case of particularly heavy menstrual flow, the menstrual blood spreads at the bottom and may spread to the front, back, left, and right edges of the menstrual pants, potentially posing a risk of leakage. For this reason, in one embodiment, as Figure 4 shown, perforations 31 or grooves 32 are provided on the absorbent layer 3.

[0039] Therefore, by providing the perforations 31 or grooves 32, the menstrual blood can be diffused along the designed trajectory, intercepting the menstrual blood in the "moat" at the front, back, left, and right of the absorbent layer, locking the liquid firmly in a fixed area, maximizing the utilization rate of the absorbent layer, and reducing the risk of leakage. At the same time, the menstrual blood will not concentrate in the middle part of the absorbent layer, the menstrual blood residue amount in the menstrual blood penetration layer is smaller, and the dryness is better. Moreover, because the absorbent layer is designed with perforations and grooves, the air permeability of the product will be stronger.

[0040] In one embodiment, the perforations 31 or grooves 32 are distributed on the left side and both sides or the front side and the back side of the absorbent layer 3. Through the above - mentioned technical solution, it can intercept menstrual blood as a "moat" to prevent it from spreading to the edge, thereby reducing the risk of leakage.

[0041] In one embodiment, the perforations 31 or grooves 32 can be continuously arranged or intermittently arranged. Through the above - mentioned technical solution, continuous arrangement can provide a more uniform liquid distribution, while intermittent arrangement may help to improve air permeability. Both can improve the absorption efficiency and reduce leakage.

[0042] As Figure 5 shown, for the leak - proof menstrual pants described in the present application, by using a four - layer structure with sequentially decreasing porosity from high to low, the menstrual blood can be stacked layer by layer from top to bottom, and can be spread to the full length of the bottom of the core body to the greatest extent, increasing the utilization rate of the core body and avoiding the concentrated absorption of menstrual blood in the middle part of the absorbent body, resulting in leakage.

[0043] The above is a specific description of the preferred embodiment of the present application. However, the present application is not limited to the described embodiment. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present application. These equivalent deformations or substitutions are all included within the scope defined by the claims of the present application.

Claims

1. A leak-proof menstrual pants, characterized in that: The invention comprises a penetration layer (1), a permeation layer (2), an absorption layer (3) and a diffusion layer (4) which are sequentially attached together from top to bottom, wherein the porosity of the penetration layer (1), the permeation layer (2), the absorption layer (3) and the diffusion layer (4) is sequentially arranged from high to low.

2. The leak-proof menstrual pants according to claim 1, characterized in that: The penetration layer (1), the infiltration layer (2), the absorption layer (3) and the diffusion layer (4) are all made of porous materials.

3. The leak-proof menstrual pants according to claim 1, characterized in that: The material of the penetration layer (1) is non-woven fabric.

4. The leakage-proof menstrual pants according to claim 1, characterized in that: The material of the infiltration layer (2) is non-woven fabric.

5. The leakage-proof menstrual pants according to claim 1, characterized in that: The absorbent layer (3) is fluff pulp or cotton fiber.

6. The leakage-proof menstrual pants according to claim 1, characterized in that: The diffusion layer (4) is non-woven fabric or dust-free paper.

7. The leakage-proof menstrual pants according to claim 1, characterized in that: The porosity of the penetration layer (1), the infiltration layer (2), the absorption layer (3) and the diffusion layer (4) are 75-85%, 60-70%, 45-55% and 15-25% respectively.

8. The leakage-proof menstrual pants according to claim 1, characterized in that: The absorption layer (3) is provided with perforations (31) or grooves (32).

9. The leakage-proof menstrual pants according to claim 8, characterized in that: The perforations (31) or the grooves (32) are distributed on the left side and both sides or the front side and the back side of the absorbent layer (3).

10. The leakage-proof menstrual pants according to claim 8, characterized in that: The perforations (31) or grooves (32) may be arranged continuously or discontinuously.

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