CN219323596U - Absorbent article - Google Patents

Abstract

The present disclosure provides an absorbent article comprising a facing structure, a water-repellent layer disposed at an edge of the facing structure and overlapping an edge of one of the facing structure, a leakage-preventing bottom layer, and an absorbent core; the leakage-proof bottom layer is arranged on the other side of the surface layer structure; the absorbent core is arranged between the surface layer structure and the leakage-proof bottom layer, and at least comprises a first absorption part and a second absorption part which are alternately distributed in sequence, wherein the fluidity of liquid in the first absorption part is greater than that of liquid in the second absorption part. In the absorbent product of the present disclosure, the first core body of the absorbent core body can quickly guide the liquid, and the second core body can quickly absorb and lock the liquid, so that the liquid absorbed by the local area of the absorbent core body can be guided and diffused to other areas, thereby realizing uniform absorption of the liquid and reducing the problem of liquid leakage.

Description

Absorbent article

Technical Field

The present disclosure relates to the field of sanitary articles, and in particular to an absorbent article.

Background

Various absorbent products sold in the market at present, including women's physiological period absorbent products, infant absorbent products, medical absorbent products and the like, have the functions becoming more and more perfect and have higher quality requirements. The conventional absorbent cores for disposable absorbent articles are two types, one is a full core formed by mixing wood pulp and high-molecular water-absorbent resin, and the other is a composite core formed by compounding dust-free paper, fluffy non-woven fabrics, high-molecular resin and the like.

The full core body has high liquid absorption speed, but the product is generally thicker and not concentrated in absorption, and the volume of the product is expanded after the macromolecular resin absorbs water, so that the product occupies the space of wood pulp, the integrity of the core body is poor after the use, and the product is easy to form lump faults; the composite core is light and thin, is not easy to fracture, but has the defects of low absorption speed, poor diffusivity, poor repeated absorbability and the like, and after the core absorbs liquid for multiple times, the conductive and diffusible properties of the core can be deteriorated, the core can be completely diffused after a long time, the absorption efficiency is low, and the surface of an absorbent article is moist, and the comfort level is reduced.

Disclosure of Invention

The present disclosure provides an absorbent article in order to solve the problems in the prior art.

An absorbent article provided according to the present disclosure includes:

the surface layer structure is provided with a plurality of layers,

the water-repellent layer is arranged at the edge of the surface layer structure and is overlapped with the edge of one surface of the surface layer structure;

the leakage-proof bottom layer is arranged on the other side of the surface layer structure;

the absorption core body is arranged between the surface layer structure and the leakage-proof bottom layer, and at least comprises a first absorption part and a second absorption part which are alternately distributed in sequence, wherein the fluidity of liquid in the first absorption part is greater than that of liquid in the second absorption part.

In one embodiment of the present disclosure, the first absorbent portion has a material density and/or material hydrophilicity that is higher than the density of the second absorbent portion.

In one embodiment of the present disclosure, the first and second absorbent parts extend toward opposite ends of the absorbent core and are alternately arranged in sequence from one side of the absorbent core to the opposite side; alternatively, the first and second absorbent parts may be alternately arranged in order along a direction inclined with respect to the extending direction of the absorbent core.

In one embodiment of the present disclosure, the first absorbent portion and the second absorbent portion of the absorbent core are distributed in an array and sequentially alternate.

In one embodiment of the present disclosure, the side of the absorbent core facing the facing structure is provided with a concave-convex structure.

In one embodiment of the present disclosure, the facing structure includes at least two facing layers that are stepped along a centerline of the absorbent article to opposite sides or that are stepped from a center location of the absorbent article to a peripheral edge.

In one embodiment of the present disclosure, the water-repellent layer is disposed around the facing structure.

In one embodiment of the present disclosure, a flow directing layer is disposed between the facing structure and the absorbent core, the flow directing layer being configured to direct liquid proximate one side of the facing structure to a side proximate the absorbent core.

In one embodiment of the present disclosure, the thickness of the water-repellent layer is not less than 0.2 mm.

In one embodiment of the present disclosure, a portion of the facing structure exposing the water-repellent layer is set to 30 to 90 mm in width and 80 to 200 mm in length.

The water-repellent layer is arranged at the edge of the surface layer structure, the surface layer structure in the middle is used for absorbing liquid, the water repellency of the edge can prevent liquid from leaking laterally, the water repellency layer is overlapped with the edge of the surface layer structure, and a dam structure can be formed, so that the liquid in the middle part is not easy to reach the water repellency layer; the first core body of the absorption core body can quickly guide liquid, and the second core body can quickly absorb and lock the liquid, so that the liquid absorbed by the local area of the absorption core body is guided and diffused to other areas, the uniform absorption of the liquid is realized, and the problem of liquid leakage is reduced.

Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic structural view of an absorbent article provided in an embodiment of the present disclosure;

FIG. 2 is a structural cross-sectional view of an absorbent article provided in an embodiment of the present disclosure;

FIG. 3 is one of schematic structural views of a strip-shaped absorbent portion of an absorbent core provided in an embodiment of the present disclosure;

FIG. 4 is a second schematic view of a strip-shaped absorbent portion of an absorbent core according to an embodiment of the present disclosure;

FIG. 5 is a third schematic view of the structure of a strip-shaped absorbent portion of an absorbent core according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of the structure of a mesh-like absorbent portion of an absorbent core provided in an embodiment of the present disclosure;

FIG. 7 is a schematic view of the structure of a honeycomb absorbent portion of an absorbent core provided in an embodiment of the present disclosure;

FIG. 8 is a schematic structural view of an absorbent core including an absorbent region provided in an embodiment of the present disclosure;

fig. 9 is a schematic view of a three-piece structure of a surface layer structure and a water repellent layer according to an embodiment of the present disclosure;

FIG. 10 is one of the cross-sectional views of a facing structure comprising at least two facings provided in accordance with one embodiment of the present disclosure;

FIG. 11 is a second cross-sectional view of a facing structure including at least two facings, in accordance with one embodiment of the present disclosure.

The one-to-one correspondence between the component names and the reference numerals in fig. 1 to 11 is as follows:

1. a facing structure; 2. a water-repellent layer; 21. an intermediate portion; 22. a wing portion; 3. a leak-proof bottom layer; 4. an absorbent core; 41. a first absorption section; 42. a second absorption section; 43. a third absorption section; 44. an absorption region; 5. a flow guiding layer; 6. release paper; 7. and (5) coating.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used merely to indicate relative positional relationships between the relevant portions, and do not limit the absolute positions of the relevant portions.

Herein, "first", "second", etc. are used only for distinguishing one another, and do not denote any order or importance, but rather denote a prerequisite of presence.

Herein, "equal," "same," etc. are not strictly mathematical and/or geometric limitations, but also include deviations that may be appreciated by those skilled in the art and allowed by fabrication or use, etc.

Unless otherwise indicated, numerical ranges herein include not only the entire range within both of its endpoints, but also the several sub-ranges contained therein.

The present disclosure provides an absorbent article, which may be a nursing pad, diaper. Sanitary napkins, and the like. The absorbent article includes a topsheet structure, a water-repellent layer, a leakage-proof backsheet, and an absorbent core. The facing structure has two opposite faces. The water-repellent layer is arranged at the edge of the surface layer structure and is overlapped with the edge of one surface of the surface layer structure; the leakage-proof bottom layer is arranged on the other side of the surface layer structure. The absorbent core is disposed between the facing structure and the leak-proof bottom layer. The absorbent core comprises at least a first absorbent part and a second absorbent part which are alternately distributed in turn, and the fluidity of the liquid in the first absorbent part is larger than that in the second absorbent part. The absorbent core may be a full core or a composite core.

The fluidity of the liquid in the first absorption part is larger, so that the liquid can be quickly guided; the mobility of the liquid in the second absorption part is smaller, and the liquid can be absorbed and locked better. The first absorption parts and the second absorption parts are sequentially and alternately distributed, so that the liquid absorbed by the local area of the absorption core body is favorably guided and diffused to other areas of the absorption core body, the speed of absorbing the liquid can be improved, the liquid can be uniformly absorbed, the problem of liquid leakage is solved, and the use is more comfortable.

The technical solutions of the present disclosure will be described in detail below in connection with specific structures.

In some embodiments of the present disclosure, as shown in fig. 1 and 2, the absorbent article includes a topsheet structure 1 and a water-repellent layer 2, the water-repellent layer 2 being disposed at an edge of the topsheet structure 1, the water-repellent layer 2 and the topsheet structure 1 constituting a top layer of the absorbent article. The absorbent product further comprises a leakage-proof bottom layer 3 and an absorbent core 4 which are arranged on one surface of the surface layer structure 1, the absorbent core 4 is arranged between the surface layer structure 1 and the leakage-proof bottom layer 3, liquid can be absorbed by the absorbent core 4 through the surface layer structure 1, and the leakage-proof bottom layer 3 can prevent the liquid from leaking out.

The facing structure 1 is made of a water permeable hydrophilic material, such as a spun-laced nonwoven fabric, a hot air nonwoven fabric, or the like. The leak-proof bottom layer 3 can be made of waterproof materials such as PE film, PE composite film and the like. The absorbent core 4 may be made of wood pulp, a high molecular absorbent material, or the like. The topsheet structure 1, the water-repellent layer 2, the leakage-preventing backsheet 3 and the absorbent core 4 may be joined by means of adhesive bonding, or may be joined by other means known to those skilled in the art, which is not limited by the present disclosure.

As shown in fig. 2, a structural adhesive may be disposed on the outer side of the leakage preventing bottom layer 3, i.e., the side facing away from the absorbent core 4, and a release paper 6 may be attached, and an envelope 7 may be disposed on the outer side of the release paper 6. The release paper 6 and the envelope 7 are provided by techniques well known to those skilled in the art and will not be described in detail in this disclosure.

In detail, the water-repellent layer 2 overlaps with the edge of the facing structure 1 on the side away from the absorbent core 4, thereby forming a dyke structure with a low middle and a high edge, preventing the middle liquid from flowing to the water-repellent layer 2 at the edge. The water-repellent layer 2 is made of a water-repellent material so that liquid can be absorbed by the absorbent core 4 through the intermediate topsheet structure 1 in a concentrated manner, thereby preventing leakage from the edges of the absorbent article. The thickness of the water-repellent layer 2 is set to not less than 0.2 mm, which is advantageous in forming a bank structure. In a preferred embodiment, the thickness of the water-repellent layer 2 is set to not less than 0.4 mm.

In some embodiments of the present disclosure, as shown in fig. 2, a flow guiding layer 5 is disposed between the facing structure 1 and the absorbent core 4, the flow guiding layer 5 being configured to guide liquid near one side of the facing structure 1 to one side near the absorbent core 4. The diversion layer 5 can be made of hot air non-woven fabrics, dust-free paper, spun-laced non-woven fabrics, spun-laced materials and the like, which is beneficial to guiding liquid to the absorption core 4 rapidly.

The absorbent core 4 includes at least two kinds of absorbent portions, and the liquid is different in fluidity at different absorbent portions, and the different absorbent portions are alternately distributed in turn.

In one embodiment of the present disclosure, as shown in fig. 3, the absorbent core 4 includes first absorbent portions 41 and second absorbent portions 42 alternately distributed in order. In detail, the first absorbent portion 41, the second absorbent portion 42, and the like of the absorbent core 4 are distributed in the length or width direction of the absorbent core 4. The fluidity of the liquid in the first absorption portion 41 is greater than that in the second absorption portion 42. The water-locking capacity of the second absorption portion 42 is greater than that of the first absorption portion 41. The liquid is absorbed by the absorbent core 4 through the topsheet structure 1, and the liquid rapidly flows along the first absorbent portion 41, diffuses to the surrounding second absorbent portion 42, and is absorbed and locked by the second absorbent portion 42.

In another embodiment of the present disclosure, as shown in fig. 4, the absorbent core 4 includes a first absorbent portion 41, a second absorbent portion 42, and a third absorbent portion 43 that are alternately arranged in this order, and the flow velocity of the liquid in the first absorbent portion 41, the second absorbent portion 42, and the third absorbent portion 43 decreases in this order. The arrangement order is as follows: the third absorption portion 43, the second absorption portion 42, the first absorption portion 41, the second absorption portion 42, and the third absorption portion 43. The liquid can be quickly guided through the first absorption portion 41 and gradually spread to the surrounding second and third absorption portions 42 and 43.

Of course, the absorbent core 4 may further include further absorbent portions having different liquid flowabilities such as a fourth absorbent portion and a fifth absorbent portion. The individual absorption portions may be arranged in other ways.

In some embodiments of the present disclosure, as shown in fig. 3 and 4, the respective absorbent portions such as the first absorbent portion 41 and the second absorbent portion 42 may be provided in a stripe-shaped structure extending toward opposite ends of the absorbent core 4 and alternately arranged in order from one side to the other side of the absorbent core 4. The liquid absorbed by the absorbent core 4 in the local area can be diffused in the extending direction of the absorbent core 4. As seen from fig. 3 and 4, the first absorbent portion 41 and the second absorbent portion 42 extend to the upper and lower ends of the absorbent core 4 in the longitudinal direction and are alternately arranged in order to the left and right sides of the absorbent core 4 in the width direction.

In other embodiments of the present disclosure, as shown in fig. 5, the respective absorbent portions of the first absorbent portion 41, the second absorbent portion 42, and the like may be provided in a stripe-shaped structure and alternately arranged in order along a direction inclined relative to the extending direction of the absorbent core 4. The liquid absorbed by the absorbent core 4 in the local area can spread in the front-back, left-right, and peripheral directions of the absorbent core 4.

In other embodiments, the individual absorbent portions of the absorbent core 4 may also be provided in other configurations, such as a curvilinear configuration, a zigzag configuration, etc.; the individual absorbent portions of the absorbent core 4 may also be arranged in other directions and may also extend in different directions, which are not shown here.

In some embodiments of the present disclosure, the first absorbent portions 41, the second absorbent portions 42, etc. of the absorbent core 4 may be distributed in an array, and sequentially alternately distributed. For example, the first absorbing part 41 for rapid diversion is provided in a net structure, and the second absorbing part 42 for water locking is distributed in the gaps formed in the first absorbing part 41. As shown in fig. 6, the second absorbing portions 42 may be provided in a rectangular structure, and the first and second absorbing portions 41 and 42 are arranged in a lattice shape. As shown in fig. 7, the second absorbing portions 42 may be provided in a hexagonal structure, and the first and second absorbing portions 41 and 42 may be distributed in a honeycomb shape. The first absorption portion 41 and the second absorption portion 42 are distributed in an array manner, so that more uniform diversion and diffusion of liquid to the surrounding are facilitated.

In some embodiments of the present disclosure, as shown in fig. 8, the middle portion of the absorbent core 4 is provided as an absorbent region 44, the absorbent region 44 is located below the facing structure 1, and the mobility of the liquid in the absorbent region 44 is not less than the mobility of the liquid in the first absorbent portion 41. The absorbent region 44 has a relatively high capacity to absorb liquid and is capable of rapidly absorbing liquid that has penetrated the facing structure 1. The first absorbent portion 41, the second absorbent portion 42, and the like are distributed around the absorbent region 44.

The first absorbent portion 41, the second absorbent portion 42, etc. of the absorbent core 4 may be different in fluidity of the liquid by a difference in materials, for example, a difference in density of materials, a difference in hydrophilicity of materials, etc.

In one embodiment of the present disclosure, the material density of the first absorbent portion 41 is greater than the material density of the second absorbent portion 42. Further, the material density of the second absorption portion 42 is greater than that of the third absorption portion 43. The greater the material density, the more material fibers the liquid can pass through, and thus the faster the liquid flows; the less dense the material, the more fluffy the material, the more open the interstices between the fibers, the less fibrous material the liquid can pass through, and thus the slower the liquid flow rate, thereby being able to lock more liquid.

In one embodiment of the present disclosure, the absorbent core 4 may be manufactured using a core forming apparatus including a transport mechanism capable of transporting the water-absorbent fibrous material to a forming wire, a suction mechanism that adsorbs the water-absorbent fibrous material on the forming wire by wind pressure, and the like. The more materials are adsorbed when the wind pressure is high, the higher the density, and the less materials are adsorbed when the wind pressure is low, the higher the density. By arranging air channels with different air pressures in different areas of the forming net, the absorbent core with different areas and different densities can be produced.

In one embodiment of the present disclosure, the first absorbent portion 41, the second absorbent portion 42, the absorbent region 44, etc. of the absorbent core 4 may be processed by embossing. For example, the first absorbent part 41 is embossed, and the second absorbent part 42 and the absorbent region 44 are not embossed. The thickness of the embossed grain raised portions is greater than the thickness of the recessed portions, and the density of the raised portions is less than the density of the recessed portions. The embossing lines of the absorbent core 4 can be stripe, lattice, honeycomb, etc.

In one embodiment of the present disclosure, as shown in fig. 2, the absorbent core 4 is provided with a concave-convex structure on the side facing the facing layer structure 1, which is advantageous for guiding liquid and can increase the water absorption surface area. The concave-convex structure can be directly processed by adopting an embossing mode.

Embossing the side of the absorbent core 4 facing the facing layer structure 1 can process the first absorbent portion 4, the second absorbent portion 42, and the like having different densities at the same time as the concave-convex structure is processed. The concave-convex structure of the absorbent core 4 and the structures of the first absorbent portion 41, the second absorbent portion 42, and the like may be processed in different manners.

In one embodiment of the present disclosure, as shown in fig. 1, the water-repellent layer 2 is an integral structure and is disposed around the facing layer structure 1 to prevent the liquid from being back-penetrated at the front, back, left and right peripheral edges of the absorbent core. Alternatively, the water-repellent layer 2 is provided with holes in the middle portion, and the facing structure 1 is provided in the holes in the middle. The size of the facing structure 1 is set according to the overall size of the absorbent article. In a preferred embodiment, the width of the opening of the facing layer structure 1 exposing the water-repellent layer 2, i.e., the middle of the water-repellent layer 2, may be set to 30 to 90 mm and the length may be set to 80 to 200 mm.

In another embodiment of the present disclosure, as shown in fig. 9, the water-repellent layer 2 includes a middle portion 21 and side wing portions 22 connected to opposite sides of the middle portion 21, constituting a three-sheet structure. The intermediate portion 21 is perforated to expose the underlying facing structure 1, and the intermediate portion 21 is disposed around the periphery of the facing structure 1. Opposite side edges of the intermediate portion 21 may overlap with edges of the side wing portions 22 and be lower than the side wing portions 22 on both sides, forming a dyke structure with a low middle and a high side, preventing liquid from flowing toward the side wing portions 22.

The facing structure 1 of the absorbent article may be embossed, apertured or provided with a plain weave fabric which is advantageous for improved liquid permeability. In addition, the surface layer structure 1 may be an integral single-layer structure, or may be a structure formed by splicing at least two surface layers, and the at least two surface layers may be connected by adhesion or other means.

In one embodiment of the present disclosure, as shown in fig. 10 and 11, at least two facing layers of the facing layer structure 1 are stepped along the centerline of the absorbent article toward opposite sides to form a multi-stage dam structure that prevents liquid from spreading toward the water-repellent layers 2 at the opposite side edges. The centerline of the absorbent article may be the centerline in the longitudinal direction or the centerline in the width direction.

In another embodiment of the present disclosure, at least two facing layers of the facing layer structure 1 are distributed stepwise from the central position of the absorbent article to the peripheral edge, forming a multistage dike structure, and preventing the diffusion of liquid to the water-repellent layer 2 at the peripheral edge.

The absorbent article of the present disclosure, by connecting the water-repellent layer 2 to the outer side of the edge of the facing layer structure 1, forms a dam structure with low middle and high edge, prevents the liquid at the facing layer structure 1 from flowing to the surrounding water-repellent layer 2, and is beneficial for allowing more liquid to penetrate the facing layer structure 1 to be absorbed by the absorbent core 4. The first and second absorption portions 41 and 42 of the absorbent core 4 are alternately arranged in this order, and the liquid can be rapidly guided to the surrounding second absorption portion 42 through the first absorption portion 41. The liquid absorbed by the local area of the absorption core body 4 can be quickly guided and diffused to the surrounding, so that the liquid is absorbed more uniformly, reverse osmosis caused by saturation of the liquid in the local area of the absorption core body 4 is avoided, and more comfortable use experience is brought.

The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims (10)

1. An absorbent article, comprising:

a surface layer structure (1),

a water-repellent layer (2), wherein the water-repellent layer (2) is arranged at the edge of the surface layer structure (1) and is overlapped with the edge of one surface of the surface layer structure (1);

the anti-leakage bottom layer (3) is arranged on the other side of the surface layer structure (1);

the anti-leakage absorbing device comprises an absorbing core body (4), wherein the absorbing core body (4) is arranged between the surface layer structure (1) and the anti-leakage bottom layer (3), the absorbing core body (4) at least comprises a first absorbing part (41) and a second absorbing part (42) which are alternately distributed in sequence, and the fluidity of liquid in the first absorbing part (41) is larger than that of liquid in the second absorbing part (42).

2. Absorbent article according to claim 1, characterized in that the material density and/or material hydrophilicity of the first absorbent part (41) is higher than the density of the second absorbent part (42).

3. The absorbent article according to claim 1, wherein the first and second absorbent portions (41, 42) extend toward opposite ends of the absorbent core (4) and are alternately arranged in order from one side of the absorbent core (4) to the opposite side; alternatively, the first and second absorption portions (41, 42) are alternately arranged in this order along a direction inclined relative to the extending direction of the absorbent core (4).

4. The absorbent article as claimed in claim 1, characterized in that the first absorbent portions (41), the second absorbent portions (42) of the absorbent core (4) are distributed in an array and alternate in sequence.

5. Absorbent article according to claim 1, characterized in that the side of the absorbent core (4) facing the facing structure (1) is provided as a relief structure.

6. Absorbent product according to claim 1, characterized in that the cover structure (1) comprises at least two covers, which are stepped on opposite sides along the centre line of the absorbent product or which are stepped from the centre position of the absorbent product to the peripheral edges.

7. Absorbent article according to claim 1, characterized in that the water-repellent layer (2) is arranged circumferentially around the facing structure (1).

8. Absorbent article according to claim 1, characterized in that a flow guiding layer (5) is arranged between the facing structure (1) and the absorbent core (4), the flow guiding layer (5) being configured to guide liquid close to one side of the facing structure (1) to close to one side of the absorbent core (4).

9. Absorbent article according to any of claims 1-8, characterized in that the thickness of the water-repellent layer (2) is not less than 0.2 mm.

10. Absorbent article according to any of claims 1-8, characterized in that the portion of the facing structure (1) where the water-repellent layer (2) is exposed is provided with a width of 30 to 90 mm and a length of 80 to 200 mm.

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