A facing structure having a leakproof wall

Abstract

The present application relates to a kind of surface layer structure with leakage-proof wall, including surface layer main body, surface layer main body includes punching embossed area and retaining wall area, punching embossed area is located in the middle of surface layer main body, retaining wall area is located in the two sides of the middle of surface layer main body;Retaining wall area is connected to the two sides of punching embossed area respectively, and the vertical height of retaining wall area is higher than punching embossed area, retaining wall area is longitudinally provided with more than one leakage-proof retaining wall, the material of leakage-proof retaining wall is hydrophilic material, the outside of two sides retaining wall area is longitudinally provided with leakage-proof separation edge respectively, the material of leakage-proof separation edge is hydrophobic material;The surface of punching embossed area is formed with multiple lines of grooves by multiple pressure points, pressure point is made by embossing process, the surface of punching embossed area is provided with multiple liquid-permeable small holes, the area of liquid-permeable small hole is less than 1mm 2 , the surface of punching embossed area is provided with multiple liquid-permeable large holes, the area of liquid-permeable large hole is greater than or equal to 1mm 2 , and the periphery of liquid-permeable large hole is provided with more than three pressure points at equal intervals.The present application can guarantee the blocking effect of surface layer to liquid.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sanitary products, in particular to a surface layer structure with a leakage-proof wall. BACKGROUND

[0002] There are several structures of conventional sanitary napkin surface layer, one is that the material of the surface layer is all hydrophilic, the surface layer extends to the wings without blocking effect, another structure is that a leakage-proof separation edge is arranged on both sides of the surface layer (the position where the surface layer extends to the wings), the middle part is hydrophilic material, the leakage-proof separation edge is composed of hydrophobic material, which is different from the surface layer, the leakage-proof separation edge material and the surface layer material have lap joint. The existing structure can only prevent liquid from penetrating to the core layer, and the liquid back penetrated by the core layer is blocked. Since the sanitary napkin cannot be worn neatly during wearing, and the user also cannot ensure the posture to make the sanitary napkin in a horizontal state, the sanitary napkin is easy to be in an inclined absorption state, thus when the liquid arrangement is large (such as during menstrual surge), the liquid absorbed by the core layer is easy to flow to the side where the core layer inclines downward under the condition that the core layer is not fully absorbed. When the leakage-proof separation edge blocks the liquid, the liquid is left at the edge of the leakage-proof separation edge, and then is left at the thigh root, causing discomfort or itching of the leg, and even the phenomenon of side leakage may occur. SUMMARY

[0003] (I) Technical problem to be solved

[0004] In order to solve the above-mentioned problems of the prior art, the present application provides a surface layer structure with a leakage-proof wall, which can ensure the blocking effect of the surface layer on the liquid.

[0005] (II) Technical scheme

[0006] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the present application includes: a surface layer structure with a leakage-proof wall, comprising a surface layer main body, the surface layer main body comprises a punched embossed area and a barrier wall area, the punched embossed area is located in the middle part of the surface layer main body, and the barrier wall area is located on both sides of the middle part of the surface layer main body;

[0007] The barrier wall area is connected to both sides of the punched embossed area respectively, and the vertical height of the barrier wall area is higher than that of the punched embossed area, the barrier wall area is longitudinally provided with one or more leakage-proof barrier walls, the material of the leakage-proof barrier wall is hydrophilic material, and the outer sides of the barrier wall areas on both sides are respectively longitudinally provided with leakage-proof separation edges, the material of the leakage-proof separation edge is hydrophobic material;

[0008] The surface of the punched embossed area is formed with a plurality of embossed lines at intervals, the embossed points are made by embossing process, a plurality of liquid permeation holes are arranged at intervals on the surface of the punched embossed area, the area of the liquid permeation hole is less than 1mm 2The surface of the perforated embossed area is provided with a plurality of liquid permeable macropores at intervals, and the area of ​​the liquid permeable macropores is greater than or equal to 1mm 2 , and more than three pressure points are arranged at equal intervals around the large liquid seepage hole.

[0009] (3) Beneficial effects

[0010] The beneficial effects of the present invention are as follows: retaining wall areas are set on both sides of the middle of the surface layer body, which can block liquids with a viscosity of more than 2 MPa.s through the leak-proof retaining wall when liquid penetrates the surface of the surface layer body. The material is a hydrophilic material, which can block the liquid while it is seeping down, and produce a gathering effect to allow the liquid to penetrate from the middle of the surface layer body to the core layer below, so that the core layer can fully absorb the penetrated liquid. Even if the sanitary napkin is in an inclined absorption state, it can greatly avoid the liquid remaining at the edge of the leak-proof partition on the outside, causing leg discomfort or itching, and can also reduce the occurrence of side leakage. In addition, by setting a plurality of liquid seepage holes, breathability and the penetration of low-viscosity liquids can be guaranteed, and by setting a plurality of perforations with an area greater than or equal to 1 mm 2 The large permeable pores are conducive to the penetration of liquids with higher viscosity and a certain volume of solids, ensuring the comfort of the main surface of the surface layer. By setting pressure points at equal intervals around the large permeable pores, the plane where the large permeable pores are located is concave toward the large permeable pores, which can facilitate the flow of liquid or solids from the large permeable pores. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A plan view of a surface structure with a leak-proof wall according to the present invention;

[0012] Figure 2 for Figure 1 Cross-sectional view along the aa axis;

[0013] Description of reference numerals:

[0014] A. Punching and embossing area; B. Retaining wall area; C. Plain weave area;

[0015] 1. Small seepage holes; 2. Pressure points; 3. Large seepage holes; 4. Leak-proof retaining walls; 5. Leak-proof partitions. DETAILED DESCRIPTION

[0016] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0017] Please refer to Figures 1 to 2 As shown, a surface layer structure with a leak-proof wall comprises a surface layer body, wherein the surface layer body comprises a perforated embossed area and a retaining wall area, wherein the perforated embossed area is located in the middle of the surface layer body, and the retaining wall areas are located on both sides of the middle of the surface layer body;

[0018] The retaining wall area is respectively connected to both sides of the perforated embossed area, and the vertical height of the retaining wall area is higher than that of the perforated embossed area. The retaining wall area is longitudinally provided with one or more leak-proof retaining walls, and the material of the leak-proof retaining walls is a hydrophilic material. The outer sides of the retaining wall areas on both sides are respectively longitudinally provided with leak-proof partition edges, and the material of the leak-proof partition edges is a hydrophobic material.

[0019] The surface of the perforated embossed area is separated by multiple pressure points to form multiple lines, and the pressure points are made by embossing process. The surface of the perforated embossed area is separated by multiple liquid permeation holes, and the area of ​​the liquid permeation holes is less than 1mm 2 The surface of the perforated embossed area is provided with a plurality of liquid permeable macropores at intervals, and the area of ​​the liquid permeable macropores is greater than or equal to 1mm 2 , and more than three pressure points are arranged at equal intervals around the large liquid seepage hole.

[0020] From the above description, it can be seen that retaining wall areas are set on both sides of the middle part of the surface layer body, which can block liquids with a viscosity of more than 2mPa.s through the leak-proof retaining wall when the liquid penetrates into the surface of the surface layer body. The material is hydrophilic material, which can block the liquid while it is seeping down, and produce a gathering effect to allow the liquid to penetrate from the middle of the surface layer body to the core layer below, so that the core layer can fully absorb the penetrated liquid. Even if the sanitary napkin is in an inclined absorption state, it can greatly avoid the liquid remaining at the edge of the leak-proof partition on the outside, causing discomfort or itching on the legs, and can also reduce the occurrence of side leakage. In addition, by setting a plurality of liquid seepage holes, breathability and the penetration of low-viscosity liquids can be guaranteed, and by setting a plurality of perforations with an area greater than or equal to 1mm 2 The large permeable pores are conducive to the penetration of liquids with higher viscosity and a certain volume of solids, ensuring the comfort of the main surface of the surface layer. By setting pressure points at equal intervals around the large permeable pores, the plane where the large permeable pores are located is concave toward the large permeable pores, which can facilitate the flow of liquid or solids from the large permeable pores.

[0021] Furthermore, four pressure points are provided at equal intervals around the large liquid seepage hole.

[0022] From the above description, it can be seen that setting four pressure points can ensure the depression of the position of the large seepage hole, thereby ensuring the effect of liquid or solid flowing into the large seepage hole.

[0023] Furthermore, the surface of the perforated and embossed area forms a plurality of longitudinal curved lines at intervals of a plurality of pressing points, and the large liquid permeation holes are arranged at the intersections of the curved lines.

[0024] From the above description, it can be seen that the large permeation holes are set at the intersection of the curved lines. Firstly, the pressure points at the curved lines can be directly used. Secondly, the surface where the curved lines are located is concave inward, which can help the liquid enter the large permeation holes along the curved lines.

[0025] Further, it also includes a plain weave area;

[0026] The plain areas are respectively connected to the outer sides of the retaining wall areas on both sides, and the leak-proof partition edges are longitudinally arranged on the surface of the plain areas.

[0027] Furthermore, the longitudinal shape of the leakage-proof retaining wall includes a straight line shape and a curved shape.

[0028] From the above description, it can be seen that the longitudinal shape of the leak-proof retaining wall can be designed to be straight or curved according to needs. When there are multiple leak-proof retaining walls, they can be multiple straight or curved leak-proof retaining walls, or a combination of straight and curved leak-proof retaining walls. The relationship between the leak-proof retaining walls can be parallel, cross, etc.

[0029] Furthermore, the width of the surface layer body is greater than or equal to 45 mm, the width of the retaining wall area and the plain area is greater than or equal to 0.1 mm, the vertical height of the retaining wall area is greater than or equal to 0.2 mm, and the vertical height of the perforated and embossed area is less than the vertical height of the retaining wall area.

[0030] Furthermore, the leak-proof retaining wall comprises a lower support bottom and an upper retaining wall bonded to each other;

[0031] The material combination of the lower support bottom and the upper retaining wall includes: the lower spunlace non-woven fabric and the upper hot air non-woven fabric, the lower hot air non-woven fabric and the upper hot air non-woven fabric, the lower spunbond non-woven fabric and the upper spunlace non-woven fabric, the lower spunbond non-woven fabric and the upper hot air non-woven fabric.

[0032] From the above description, it can be seen that the supporting bottom of the lower layer can provide support and provide the vertical stiffness required by the leak-proof retaining wall. After testing, the stiffness is applied to the surface layer body with a weight of more than 0.2KG, and the height of the leak-proof wall recovers by more than 30%, which can ensure the liquid blocking effect of the leak-proof retaining wall.

[0033] Furthermore, the distance between the central axis of the leak-proof retaining wall and the perforated and embossed area is 10-40 mm.

[0034] Example 1

[0035] Please refer to Figures 1 to 2 As shown, a surface layer structure with a leak-proof wall includes a surface layer body, the surface layer body includes a perforated embossed area A and a retaining wall area B, the perforated embossed area A is located in the middle of the surface layer body, and the retaining wall areas B are located on both sides of the middle of the surface layer body;

[0036] The retaining wall area B is connected to both sides of the perforated embossed area A, and the vertical height of the retaining wall area B is higher than that of the perforated embossed area A. The retaining wall area B is provided with one or more leak-proof retaining walls 4, and the material of the leak-proof retaining walls 4 is a hydrophilic material. The outer sides of the retaining wall area B on both sides are respectively provided with leak-proof partition edges 5, and the material of the leak-proof partition edges 5 is a hydrophobic material;

[0037] The surface of the perforated embossed area A is separated by multiple pressure points 2 to form multiple lines, and the pressure points 2 are made by embossing process. The surface of the perforated embossed area A is separated by multiple liquid permeation holes 1, and the area of ​​the liquid permeation holes 1 is less than 1mm 2 The surface of the perforated embossed area A is provided with a plurality of large permeable pores 3 at intervals, and the area of ​​the large permeable pores 3 is greater than or equal to 1mm 2 , and more than three pressure points 2 are evenly spaced around the large permeation hole 3.

[0038] Among them, when there are multiple leakage-proof retaining walls 4, there are no holes on the sides of the leakage-proof retaining walls 4, and there are no connecting channels between the leakage-proof retaining walls 4, so as to ensure the blocking effect.

[0039] The specific shape of the leak-proof partition 5 is not limited and can be a strip shape or the like, which is the leak-proof partition 5 in the prior art.

[0040] After testing, the leak-proof retaining wall 4 can block liquids with a viscosity of more than 2 MPa.s. For liquids with a viscosity of more than 2 MPa.s, the amount of liquid blocked varies according to the viscosity, and the liquid diffusion width also varies. When the width of the perforated embossed area A is 43.51 mm and the width of the retaining wall areas on both sides is 10 mm, the leak-proof effect is shown in the following table:

[0041]

[0042] It can be seen from the above table that for liquids with a viscosity of more than 2 MPa.s, it has a good barrier effect and can control the diffusion width of the liquid within the retaining wall area B.

[0043] In this embodiment, four pressure points 2 are provided at equal intervals around the large liquid permeation hole 3 .

[0044] In this embodiment, the surface of the perforated embossing area A is separated by multiple pressure points 2 to form multiple longitudinal curved lines, and the longitudinally adjacent curved lines intersect with each other. At the same time, the transversely adjacent curved lines may be parallel or alternate; the large permeation holes 3 are arranged at the intersection of the curved lines.

[0045] In this embodiment, a plain weave area C is also included;

[0046] The plain area C is connected to the outer sides of the retaining wall areas B on both sides respectively, and the leak-proof partition 5 is longitudinally arranged on the surface of the plain area C.

[0047] In this embodiment, the longitudinal shape of the leakage-preventing retaining wall 4 includes a straight line shape and a curved line shape.

[0048] In this embodiment, the width of the surface layer body is greater than or equal to 45 mm, the width of the retaining wall area B and the plain area C is greater than or equal to 0.1 mm, the vertical height of the retaining wall area B is greater than or equal to 0.2 mm, and the vertical height of the perforated and embossed area A is less than the vertical height of the retaining wall area B.

[0049] In this embodiment, the leakage-proof retaining wall 4 includes a lower support bottom and an upper retaining wall that are bonded to each other, and the bonding method includes mechanical bonding, thermal bonding or ultrasonic bonding.

[0050] The material combination of the lower support bottom and the upper retaining wall includes: the lower spunlace non-woven fabric and the upper hot air non-woven fabric, the lower hot air non-woven fabric and the upper hot air non-woven fabric, the lower spunbond non-woven fabric and the upper spunlace non-woven fabric, the lower spunbond non-woven fabric and the upper hot air non-woven fabric.

[0051] In this embodiment, the distance between the central axis of the leakage-proof retaining wall 4 and the perforated and embossed area A is 10-40 mm.

[0052] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A surface structure with a leak-proof wall, characterized in that: The surface layer comprises a main body, wherein the main body comprises a perforated and embossed area and a retaining wall area, wherein the perforated and embossed area is located in the middle of the main body, and the retaining wall areas are located on both sides of the middle of the main body; The retaining wall area is respectively connected to both sides of the perforated embossed area, and the vertical height of the retaining wall area is higher than that of the perforated embossed area. The retaining wall area is longitudinally provided with one or more leak-proof retaining walls, and the material of the leak-proof retaining walls is a hydrophilic material. The outer sides of the retaining wall areas on both sides are respectively longitudinally provided with leak-proof partition edges, and the material of the leak-proof partition edges is a hydrophobic material. The surface of the perforated embossed area is separated by multiple pressure points to form multiple lines, and the pressure points are made by embossing process. The surface of the perforated embossed area is separated by multiple liquid permeation holes, and the area of ​​the liquid permeation holes is less than 1mm 2 The surface of the perforated embossed area is provided with a plurality of liquid permeable macropores at intervals, and the area of ​​the liquid permeable macropores is greater than or equal to 1mm 2 , and more than three pressure points are provided at equal intervals around the large permeation hole; Four pressure points are arranged at equal intervals around the large seepage hole; The surface of the perforated embossing area is formed with a plurality of longitudinal curved lines at intervals of a plurality of pressing points, and the large permeable holes are arranged at the intersections of the curved lines.

2. The surface layer structure with leak-proof wall according to claim 1, characterized in that: Also includes tabby areas; The plain areas are respectively connected to the outer sides of the retaining wall areas on both sides, and the leak-proof partition edges are longitudinally arranged on the surface of the plain areas.

3. The surface layer structure with leak-proof wall according to claim 1, characterized in that: The longitudinal shape of the leakage-proof retaining wall includes a straight line shape and a curved line shape.

4. The surface layer structure with leak-proof wall according to claim 2, characterized in that: The width of the surface layer body is greater than or equal to 45 mm, the width of the retaining wall area and the plain area is greater than or equal to 0.1 mm, the vertical height of the retaining wall area is greater than or equal to 0.2 mm, and the vertical height of the perforated and embossed area is less than the vertical height of the retaining wall area.

5. The surface structure with leak-proof wall according to claim 1, characterized in that: The leak-proof retaining wall comprises a lower support base and an upper retaining wall bonded to each other; The material combination of the lower support bottom and the upper retaining wall includes: the lower spunlace non-woven fabric and the upper hot air non-woven fabric, the lower hot air non-woven fabric and the upper hot air non-woven fabric, the lower spunbond non-woven fabric and the upper spunlace non-woven fabric, the lower spunbond non-woven fabric and the upper hot air non-woven fabric.

6. The surface layer structure with leak-proof wall according to claim 1, characterized in that: The distance between the leakage-proof retaining wall and the central axis of the perforated and embossed area is 10-40 mm.

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