Absorption article

Abstract

The embodiment of the utility model provides an absorption article which comprises a body, the body comprises a surface layer, a diffusion layer, an absorption layer and a bottom layer, the absorption layer comprises second linear embossments, the second linear embossments are formed by adjacently arranging a plurality of second indentations, the plurality of second linear embossments are arranged along the width direction of the body, the surface layer is provided with a plurality of through holes, and the bottom layer is provided with a plurality of through holes. The body further comprises a first linear embossing, the first linear embossing is formed by adjacently arranging a plurality of first indentations which are recessed from the surface of the surface layer to the bottom layer, and body fluid can quickly penetrate through the surface layer to be diffused by the diffusion layer and absorbed by the absorption layer through the arrangement; body fluid can be quickly guided and diffused through the second linear embossed patterns, so that the absorption capacity of the whole absorption layer is utilized, the containing space is formed under the through hole, the infiltrated body fluid can be temporarily contained in the containing space, and back infiltration is reduced under the blocking effect of the diffusion layer.

Description

Technical Field

[0001] This utility model relates to the field of absorbent products, specifically to absorbent products such as sanitary napkins, panty liners, and diapers. Background Technology

[0002] Sanitary napkins, panty liners, diapers, and other absorbent products are widely used in people's daily lives. Typically, these absorbent products consist of a liquid-permeable top sheet, a liquid-impermeable bottom sheet, and an absorbent core sandwiched between the top sheet and the bottom sheet.

[0003] To improve absorption rate, current methods typically involve pressing grooves or mesh-like structures into absorbent materials. This increases the density of the areas corresponding to the grooves or mesh structures and reduces the diameter of the capillaries, thereby improving absorption rate. In this approach, the grooves and mesh structures are usually located on the surface layer and form a grooved structure from the surface layer to the bottom layer. However, even with this structure, there is still a problem of insufficient absorption capacity. In particular, when the flow rate of bodily fluids is large, the fluid tends to concentrate in the middle area. Especially when the fluid is viscous menstrual blood, insufficient absorption rate can easily lead to fluid adhering to the skin or causing discomfort during use.

[0004] In this situation, people have solved the above problems by opening holes in the surface layer, such as the structures shown in CN221751165U, CN221672331U, and WO2024065584A1. However, these structures usually use through holes in the surface layer that directly correspond to the absorption layer or further open holes in the absorption layer that correspond to the through holes. On the one hand, this leads to increased backflow. On the other hand, after adopting this form, the absorption rate of body fluid in the thickness direction increases, but the diffusion capacity in the planar direction decreases significantly, making it even more impossible to utilize the absorption capacity of other areas, resulting in insufficient overall absorption capacity.

[0005] Therefore, an improved technical solution is needed to solve the above-mentioned technical problems. Utility Model Content

[0006] Therefore, this utility model provides an absorbent product to solve the above-mentioned technical problems.

[0007] An absorbent material includes a body comprising a top layer, a diffusion layer, an absorbent layer, and a bottom layer stacked together. The body includes a main absorbent region. The absorbent layer includes a second linear embossing along the length of the body. The second linear embossing is formed by a plurality of adjacent second indentations recessed from the surface of the absorbent layer towards the bottom layer. Multiple second linear embossings are arranged along the width of the body. The top layer has a plurality of through holes, and the through holes in the main absorbent region correspond to the positions of the first indentations. The body also includes a first linear embossing that combines the top layer, the diffusion layer, and the absorbent layer. The first linear embossing is formed by a plurality of adjacent first indentations recessed from the surface of the top layer towards the bottom layer.

[0008] The through hole is perpendicular to the length direction of the first indentation.

[0009] The diffusion layer does not have through holes, and the thickness of the diffusion layer is less than or equal to the thickness of the surface layer.

[0010] The second linear embossing is straight and extends along the length of the absorption layer.

[0011] Among them, several through holes are arranged adjacent to each other to form a linear pattern. The length direction of the linear pattern is parallel to the width direction of the body. There are multiple linear patterns, and the multiple linear patterns are equally spaced along the length direction of the body. The spacing between adjacent linear patterns is equal to the spacing between adjacent through holes.

[0012] The aspect ratio of the second indentation is 2 to 10:1, and the aspect ratio of the through hole 1111 is also 2 to 10:1.

[0013] The body also includes an upper region located above the main absorption region and a lower region located below the main absorption region. The through holes are only provided in the main absorption region, and no through holes are provided in the upper and lower regions.

[0014] The multiple second linear embossings are equidistantly spaced in the width direction of the body, and the multiple second linear embossings form a first region, the width of which is greater than or equal to 60% of the width of the absorbent layer.

[0015] The first indentation is a dotted indentation.

[0016] The surface layer further includes a groove, and the through hole is located at the bottom of the groove.

[0017] Beneficial Effects: This utility model provides an absorbent product, including a body. The body includes a surface layer, a diffusion layer, an absorbent layer, and a bottom layer stacked together. The body includes a main absorbent area. The absorbent layer includes a second linear embossing along the length of the body. The second linear embossing is formed by a plurality of adjacent second indentations recessed from the surface of the absorbent layer towards the bottom layer. Multiple second linear embossings are arranged along the width of the body. The surface layer has a plurality of through holes, and the through holes in the main absorbent area correspond to the positions of the first indentations. The body also includes a first [missing information - likely a first layer] that combines the surface layer, the diffusion layer, and the absorbent layer. The linear embossing, specifically the first linear embossing, is formed by several adjacent first indentations that are recessed from the surface of the surface layer towards the bottom layer. This arrangement allows viscous body fluids to quickly pass through the surface layer and be diffused by the diffusion layer and absorbed by the absorption layer. Secondly, when there is a large amount of body fluid, the second linear embossing can quickly guide and diffuse the body fluid, thereby utilizing the absorption capacity of the entire absorption layer. Thirdly, directly below the through-hole, the diffusion layer and the second indentation form a containment space, which can temporarily contain the seeping body fluid. In addition, the diffusion layer acts as a barrier, reducing backflow. Attached Figure Description

[0018] Figure 1 Front view of the absorbent product body according to an embodiment of this utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the cross-section at point AA;

[0020] Figure 3 for Figure 1 Enlarged diagram of area B in the middle;

[0021] Figure 4 for Figure 2 Enlarged diagram of area C;

[0022] Figure 5 This is a schematic diagram of the cross-section at the through hole in the surface layer in another embodiment;

[0023] Body 10; main absorption area 100; upper side area 101; lower side area 102; left side area 103; right side area 104; surface layer 11, 21; linear pattern 111; through holes 1111, 2111; first linear embossing 112; first indentation 1121; diffusion layer 12; absorption layer 13; second linear embossing 113; second indentation 1131; bottom layer 14; groove 210. Detailed Implementation

[0024] This utility model provides an absorbent product, which will be further described below with reference to the accompanying drawings.

[0025] It should also be noted that the terms "upper," "lower," "inner," "outer," and "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Please refer to the attached document. Figure 1 and Figure 2 The absorber provided in this application embodiment includes a body 10, which includes a surface layer 11, a diffusion layer 12, an absorbent layer 13 and a bottom layer 14 stacked together.

[0027] The body 10 is generally strip-shaped, including both the length and width directions. Figure 1 The length direction is vertical and the width direction is horizontal. The main body 10 includes a main absorption area 100 and side areas surrounding the main absorption area 100. For ease of description, the two side areas arranged along the width direction of the main absorption area 100 are called the left side area 103 and the right side area 104, and the two side areas arranged along the length direction of the main absorption area 100 are called the upper side area 101 and the lower side area 102. Usually, the main absorption area 100 is located in the middle of the main body. More specifically, the main absorption area 100 is located in the area adjacent to the body fluid discharge area, which can be the vaginal opening, anus, urethral opening, etc.

[0028] The surface layer 11 is disposed on the side close to the user's skin, and the surface layer 11 should be at least partially liquid-permeable. Liquid permeability means that body fluids can pass through the surface layer 11 and enter the structural layer below the surface layer 11, such as the absorbent layer 13. Typically, the body fluids can also diffuse along the surface layer 11 to further improve the absorption efficiency of the absorbent for body fluids. At least partially liquid-permeable means that at least the area of ​​the surface layer 11 corresponding to the body fluid drainage area is liquid-permeable.

[0029] Since the surface layer 11 comes into contact with the skin, it is preferably made of a material that is low in irritation and soft, such as having a weight per unit area of ​​10–60 g / m². 2Sheet materials such as gauze, cotton cloth, spunlace nonwoven fabric, and hot-air nonwoven fabric are preferred. More preferably, hot-air nonwoven fabric is made of thermoplastic synthetic fibers. As the synthetic fibers constituting the hot-air nonwoven fabric, polyethylene (PE) fiber, polypropylene (PP) fiber and other polyolefin fibers, polyester fibers, nylon and other polyamide fibers, etc. can be used. In some optional embodiments, natural fibers or viscose fibers can also be added at the same time to further reduce skin irritation. These natural fibers can include wood fibers, cotton fibers, etc.

[0030] The diffusion layer 12 is stacked below the surface layer 11 to diffuse body fluids that permeate the surface layer 11 and to prevent body fluids from accumulating on the surface layer 11. It can be understood that the diffusion layer 12 is also called ADL. The diffusion layer 12 can be a sheet material mainly composed of thermoplastic fibers, or further composed of natural fibers or viscose fibers. The thermoplastic fibers can be polyethylene (PE) fibers, polypropylene (PP) fibers and other polyolefin fibers, polyester fibers, nylon and other polyamide fibers, etc.

[0031] The absorbent layer 13 is stacked below the diffusion layer 12. Specifically, the absorbent layer 13 is a three-dimensional network structure formed by several entangled fibers appropriately connected. Several pores are distributed between the three-dimensional network structure, through which body fluids can be absorbed and diffused. In a preferred embodiment, superabsorbent polymer (SAP) is included between the three-dimensional network structure to further absorb and retain body fluids through the superabsorbent polymer. It is understood that the fibers can be fluff pulp.

[0032] Furthermore, the absorbent layer 13 may also include a covering layer, which covers or coats the three-dimensional network structure. The covering layer is a liquid-permeable material; in some specific embodiments, it may be non-woven fabric or toilet paper. Preferably, the covering layer is soft, for example, having a weight per unit area of ​​10–60 g / m². 2 Sheet materials such as gauze, cotton cloth, spunlace nonwoven fabric, hot air nonwoven fabric, and toilet paper are preferred, and more preferably, the covering layer has a lower basis weight than the surface layer 1120.

[0033] The bottom layer 14 is stacked below the absorbent layer 13. In order to prevent body fluids from seeping through the surface layer 11 and contaminating the user's clothing, the bottom layer 14 is usually made of water-repellent material. Specifically, it can be PE film, SMS non-woven fabric, non-woven fabric with water-repellent treatment, etc. Preferably, the bottom layer 14 allows gas, such as water vapor, to pass through, but body fluids cannot pass through, so that it will not be stuffy when used.

[0034] Please refer to this as well. Figure 3 and Figure 4 , Figure 3 and Figure 4 Enlarged schematic diagrams of corresponding positions are shown respectively. The absorption layer 13 includes multiple second linear embossings 113. The length direction of the second linear embossings 113 is along the length direction of the body 10. In this embodiment, the second linear embossings 113 are straight and penetrate the length direction of the absorption layer 13. More specifically, the absorption layer 13 includes a first end and a second end along the length direction, and the second linear embossings 113 extend from the first end to the second end.

[0035] Multiple second linear embossings 113 are arranged along the width direction of the body 10. More specifically, multiple second linear embossings 113 are arranged at equal intervals in the width direction of the body 10, and multiple second linear embossings 113 form a first region. The width of the first region is greater than or equal to 60% of the width of the absorbent layer 13.

[0036] The second linear embossing 113 is formed by a plurality of second indentations 1131 recessed from the surface of the self-absorbing layer 13 toward the bottom layer 14, arranged adjacently. The adjacent arrangement means that the second indentations 1131 are arranged continuously or discontinuously. Discontinuous means that the positions of adjacent indentations are not adjacent. Preferably, the second indentations 1131 are arranged discontinuously, and each second indentation 1131 in the second linear embossing 113 is arranged in a form of equal interval.

[0037] In addition, in this embodiment, the second indentation 1131 is a rice grain-shaped indentation, which includes both the length direction and the width direction. The rice grain-shaped indentation refers to an indentation with an aspect ratio of 2 to 10:1. At the same time, the length direction of the second indentation 1131 is approximately parallel to the length direction of the body 10, and the second indentations 1131 are arranged in sequence, so that the formed second linear embossing 113 presents a shape in which the length direction is parallel or approximately parallel to the length direction of the body 10.

[0038] Furthermore, the second indentation 1131 has a length of 2 to 6 mm.

[0039] Furthermore, the spacing between adjacent second indentations 1131 is 1–3 mm.

[0040] The surface layer 11 is provided with a plurality of through holes 1111, and the through holes 1111 in the main absorption area 100 correspond to the positions of the second indentation 1131. The body 10 also includes a second linear embossing 113 that combines the surface layer 11, the diffusion layer 12 and the absorption layer 13. The second linear embossing 113 is formed by a plurality of second indentations 1131 that are recessed from the surface of the surface layer 11 toward the bottom layer 14.

[0041] Specifically, in this embodiment, the through hole 1111 is also rice-grain shaped. The through hole 1111 includes a length direction and a width direction, and the length-to-width ratio of the through hole 1111 is 2 to 10:1. At the same time, the length direction of the through hole 1111 is parallel to the width direction of the body 10. Meanwhile, several through holes 1111 are arranged adjacent to each other to form a linear pattern 111. The length direction of the linear pattern 111 is parallel to the width direction of the body 10. It can be understood that since the length direction of the second linear embossing 113 is parallel to the length direction of the body 10, and the length direction of the linear pattern 111 is parallel to the width direction of the body 10, the length direction of the linear pattern 111 is perpendicular to the length direction of the second linear embossing 113. Since the position of the through hole 1111 in the main absorption area 100 corresponds to the position of the second indentation 1131, there is a corresponding second indentation 1131 directly below each through hole 1111, and the length direction of the corresponding through hole 1111 is perpendicular to the length direction of the second indentation 1131.

[0042] As can be seen, the linear embossing formed by the through-hole 1111 is along the width direction, while the second linear embossing 113 formed by the second indentation 1131 is along the length direction. The diffusion layer 12 is sandwiched between the through-hole 1111 and the second indentation 1131. In practice, it has been found that when there is viscous body fluid, the viscous body fluid can quickly pass through the through-hole 1111, diffuse through the diffusion layer 12, and be absorbed by the absorption layer 13. When there is a large amount of body fluid, the second linear embossing 113 of the absorption layer 13 can quickly guide the body fluid to diffuse towards the upper side region 101 and the lower side region 102, thereby utilizing the entire absorption layer. The absorption capacity of the absorption layer 13 is such that, when there is both viscous body fluid and a large volume of body fluid, a containment space is formed by the diffusion layer 12 and the second indentation 1131 directly below the through hole 1111. The seeping body fluid can be temporarily contained in this containment space. That is, this structure can simultaneously improve the absorption of viscous body fluid and large volume of body fluid. In addition, since the diffusion layer 12 is set above the second indentation 1131 to form a barrier, the probability of body fluid in the absorption layer 13 seeping back through the through hole 1111 when squeezed is also reduced. In further research, it was found that, using the above structure and the test method in Appendix A of GB / T 8939-2018, the average absorption rate was increased by 6.7% compared with the case of using the same surface layer 11, diffusion layer 12 and absorption layer 13. When the artificial menstrual blood was further increased to 1.5 times the national standard, the average absorption rate increased by 11.9%.

[0043] Furthermore, the diffusion layer 12 should not have through holes 1111, so as to reduce backflow through the diffusion layer 12 and at the same time allow the diffusion layer 12 to diffuse body fluids along the planar direction.

[0044] Furthermore, the thickness of the diffusion layer 12 is less than or equal to the thickness of the surface layer 11, so that the body fluid can quickly diffuse along the diffusion layer 12 and can quickly pass through the diffusion layer 12 and be absorbed by the absorption layer 13.

[0045] Furthermore, the through hole 1111 is only provided in the main absorption region 100, and is not provided in the upper side region 101 and the lower side region 102.

[0046] Furthermore, there are multiple linear patterns 111, and the multiple linear patterns 111 are equidistantly spaced along the length direction of the body 10, and the spacing between adjacent linear patterns 111 is equal to the spacing between adjacent through holes 1111.

[0047] Furthermore, the diameter of the through hole 1111 should be greater than or equal to 1 mm.

[0048] Please refer to this as well. Figure 5 In another embodiment, the surface layer 21 further includes a groove 210, and the through hole 2111 is disposed at the bottom of the groove 210. By disposing of the through hole 2111 at the bottom of the groove 210, the surface layer 21 can have better comfort on the one hand, and the body fluid can quickly diffuse when it passes through the through hole 2111 and comes into contact with the diffusion layer, and the backflow is reduced when the body is squeezed.

[0049] The body 10 also includes a first linear embossing 112 that combines the surface layer 11, the diffusion layer 12 and the absorption layer 13. The first linear embossing 112 is formed by a plurality of first indentations 1121 that are recessed from the surface of the surface layer 11 toward the bottom layer 14.

[0050] It is understood that the so-called combination refers to the connection of the combined materials to form a whole. In this embodiment, the combination of the surface layer 11, the diffusion layer 12 and the absorption layer 13 is achieved by mechanical pressing to make the fibers between the materials entangle and form a connection. It is understood that the combination of the surface layer 11, the diffusion layer 12 and the absorption layer 13 can be separated under a certain external force, that is, the above combination is a non-fixed connection.

[0051] The first linear embossing 112 is an arc shape that is concave in the middle. There is a pair of first linear embossings 112, and the pair of first linear embossings 112 are symmetrically arranged in the width direction of the body 10. At the same time, the length direction of the first linear embossings 112 extends along the length direction of the body 10. In this way, the main absorption area 100 between the pair of first linear embossings 112 can be raised, so that the main absorption area 100 can be closer to the body fluid outlet.

[0052] Furthermore, each of the first linear embossings 112 is symmetrically arranged in its length direction.

[0053] Furthermore, the first indentation 1121 is a dot-shaped indentation, which includes both the length and width directions. The dot-shaped indentation refers to an indentation with an aspect ratio of 1.

[0054] Furthermore, the length and width of the dotted indentations are both smaller than the second indentation 1131. At the same time, the spacing between adjacent dotted indentations is smaller than the spacing between adjacent second indentations 1131. This allows the first linear embossing 112 to better bond with the surface layer 11, the diffusion layer 12, and the absorption layer 13. On the other hand, it allows the body fluid on the surface of the surface layer 11 to quickly diffuse along the first linear embossing 112, thereby accelerating the absorption of the body fluid.

[0055] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An absorbent material, comprising a body, said body comprising a top layer, a diffusion layer, an absorbent layer, and a bottom layer stacked thereon, characterized in that, The body includes a main absorption region, and the absorption layer includes a second linear embossing arranged along the length of the body. The second linear embossing is formed by a plurality of second indentations that are recessed from the surface of the absorption layer towards the bottom layer, arranged adjacently. Multiple second linear embossings are arranged along the width of the body. The surface layer is provided with a plurality of through holes, and the through holes in the main absorption region correspond to the positions of the first indentations. The body also includes a first linear embossing that combines the surface layer, the diffusion layer, and the absorption layer. The first linear embossing is formed by a plurality of first indentations that are recessed from the surface of the surface layer towards the bottom layer, arranged adjacently.

2. The absorbent article as described in claim 1, characterized in that, The corresponding through hole is perpendicular to the length direction of the first indentation.

3. The absorbent article as described in claim 1, characterized in that, The diffusion layer has no through holes, and the thickness of the diffusion layer is less than or equal to the thickness of the surface layer.

4. The absorbent article as described in claim 3, characterized in that, The second linear embossing is straight and extends along the length of the absorbent layer.

5. The absorbent article as described in claim 4, characterized in that, Several through holes are arranged adjacent to each other to form a linear pattern. The length direction of the linear pattern is parallel to the width direction of the body. There are multiple linear patterns, and the multiple linear patterns are equally spaced along the length direction of the body. The spacing between adjacent linear patterns is equal to the spacing between adjacent through holes.

6. The absorbent article as described in claim 5, characterized in that, The aspect ratio of the second indentation is 2 to 10:1, and the aspect ratio of the through hole is also 2 to 10:

1.

7. The absorbent article as described in claim 1, characterized in that, The body also includes an upper region located above the main absorption region and a lower region located below the main absorption region. The through holes are only provided in the main absorption region, and no through holes are provided in the upper and lower regions.

8. The absorbent article as described in claim 7, characterized in that, Multiple second linear embossings are equidistantly spaced in the width direction of the body, and the multiple second linear embossings form a first region, the width of which is greater than or equal to 60% of the width of the absorbent layer.

9. The absorbent article as described in claim 8, characterized in that, The first indentation is a dotted indentation.

10. The absorbent article as claimed in claim 1, characterized in that, The surface layer also includes a groove, and the through hole is disposed at the bottom of the groove.

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