CN218852956U

CN218852956U - Sanitary napkin

Info

Publication number: CN218852956U
Application number: CN202222801097.9U
Authority: CN
Inventors: 李巧萍; 龚沛
Original assignee: Shanghai Qianzhi Nursing Supplies Co ltd
Current assignee: Shanghai Qianzhi Nursing Supplies Co ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-04-14
Anticipated expiration: 2032-10-24

Abstract

The utility model discloses a sanitary towel, which relates to the technical field of sanitary articles. One embodiment of the sanitary napkin comprises: the surface layer, the absorption layer, the bottom layer and the fixing layer; wherein the absorption layer is arranged between the surface layer and the bottom layer, and the fixing layer is arranged on the other side of the bottom layer; the absorption layer contains water-absorbing powder, and the water-absorbing powder is distributed on the left side and the right side of the absorption layer respectively. The embodiment can avoid the gel blocking effect caused by the water absorbing powder and improve the liquid diffusion capacity, thereby improving the side leakage prevention effect.

Description

Sanitary napkin

Technical Field

The utility model relates to the technical field of sanitary products, especially, relate to a sanitary towel.

Background

The appearance of sanitary napkins has been over 100 years old, and in the development of over 100 years, the sanitary napkins become thinner and thinner, and the absorption capacity is gradually increased, and most of the increase of the absorption capacity depends on the increase of the water-absorbing powder material.

In actual consumer testing, we found that the problem of side leakage of sanitary napkins was not effectively solved despite the increasing absorption capacity, due to the inherent disadvantage of absorbent powders, namely the gel blocking effect. The absorbent powder rapidly swells upon absorbing water, the volume thereof greatly increases, and the particles are piled up with each other, which becomes an obstacle to the re-permeation of liquid.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present invention provides a sanitary napkin, which can avoid the gel blocking effect caused by the absorbent powder and improve the liquid diffusion capability, thereby improving the side leakage prevention effect.

In order to achieve the above object, a sanitary napkin according to an embodiment of the present invention includes a surface layer, an absorbent layer, a bottom layer, and a fastening layer; wherein the absorption layer is arranged between the surface layer and the bottom layer, and the fixing layer is arranged on the other side of the bottom layer; the absorbing layer comprises water absorbing powder which is respectively distributed on the left side and the right side of the absorbing layer.

Optionally, the width of the absorbent powder area on each side of the absorbent layer is less than 20% of the width of the absorbent layer.

Optionally, the absorption layer is formed by compounding a sheet material with water absorption property and water absorption powder; or the absorption layer is formed by mixing a material with water absorption and water absorption powder.

Optionally, the contour of the area of the absorbent powder on each side of the absorbent layer is formed by straight lines and/or curved lines.

Optionally, the sanitary napkin has a length greater than 150mm and less than 435mm.

Optionally, the facing layer is a nonwoven fabric or a perforated PE film.

Optionally, the bottom layer is a PE film or a water repellent non-woven fabric.

Optionally, the fixing layer is glue or a magic hook.

Optionally, the facing comprises: the central surface layer is used for covering the absorption layer, and the side surface layers are positioned at the left side and the right side of the central surface layer; the side layer and the corresponding bottom layer region form a protective wing.

Optionally, the fastening layer comprises a central fastening layer and a flap fastening layer; the central fixing layer is positioned in the area of the bottom layer corresponding to the absorption layer, and the wing fixing layers are positioned in the area of the bottom layer corresponding to the wings.

An embodiment in the above-mentioned utility model has following advantage or beneficial effect: the utility model discloses the powder that absorbs water only distributes in the both sides of absorbed layer in the sanitary towel, the gel blocking effect that the powder brought that absorbs water when having avoided absorbing liquid many times to because do not absorb water the hindrance of powder, the diffusivity of liquid in the absorbed layer will improve, the powder that absorbs water of both sides can also play the purpose that prevents the side leakage simultaneously, reduces the probability of side leakage.

Further effects of the above-mentioned non-conventional alternatives will be described below in connection with the embodiments.

Drawings

The accompanying drawings are included to provide a better understanding of the present invention and are not intended to constitute an undue limitation on the invention. Wherein:

FIG. 1 is a schematic front view of a sanitary napkin according to an embodiment of the present invention;

FIG. 2 is a schematic back view of a sanitary napkin according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a sanitary napkin according to an embodiment of the present invention;

FIG. 4 is a schematic illustration of an absorbent layer of a sanitary napkin according to some embodiments of the present invention;

FIG. 5 is a schematic view of an absorbent layer of a sanitary napkin according to further embodiments of the present invention;

fig. 6 is a schematic view of an absorbent layer of a sanitary napkin according to further embodiments of the present invention;

fig. 7 is a schematic view of an absorbent layer of a sanitary napkin according to further embodiments of the present invention;

fig. 8 is a schematic cross-sectional view of an absorbent layer according to some embodiments of the present invention;

fig. 9 is a schematic cross-sectional view of an absorber layer in accordance with further embodiments of the present invention.

Detailed Description

Exemplary embodiments of the invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

The sanitary towel provided by the embodiment of the utility model comprises a surface layer, an absorption layer 2, a bottom layer 3 and a fixed layer 4. The absorption layer 2 is arranged between the surface layer and the bottom layer 3, and the fixing layer 4 is arranged at the other side of the bottom layer 3. The absorption layer 2 contains water-absorbing powder which is respectively distributed at the left side and the right side of the absorption layer 2. The left and right sides referred to herein mean the left and right sides, i.e., the upper and lower sides in fig. 1, 2, 4 to 7, of the sanitary napkin during actual use.

The width of the absorbing layer, which is the dimension of the absorbing layer in the left-right direction, is shown as W1 in fig. 1. The width of the absorbent powder region means the dimension of the absorbent powder region on each side in the left-right direction, i.e., the dimension of each absorbent powder region 22 from top to bottom in the figures 4 to 7. The width of the water-absorbing powder area can be selectively set according to actual conditions. For example, the width of the absorbent layer 2 is less than 20% of the width of the absorbent layer on each side of the absorbent layer.

The absorbent layer 2 is formed of a material having water absorbency such as toilet paper, nonwoven fabric, wood pulp fiber, or pre-set sheet-like absorbent fiber, and water absorbent powder. In some alternative embodiments, the absorption layer 2 is formed by combining a sheet material with water absorption property and water absorption powder, for example, spraying water absorption powder on the surface of the sheet material with water absorption property, as shown in fig. 8. In still other alternative embodiments, the absorbent layer 2 may be formed by mixing a material having water absorbency with water absorbent powder, such as absorbent fibers, wood pulp fibers, etc., and then pressing into a sheet-like structure, such as the absorbent layer shown in fig. 9.

The absorbent powder may be located at both side edges of the absorbent layer 2. Fig. 4 and 6 show schematic views of the absorbent layer of the sanitary napkin in the embodiment of the present invention. As shown in fig. 4 and 6, the absorbent layer includes a water-absorbent material region 21 and a water-absorbent powder region 22, and the water-absorbent powder regions 22 are respectively distributed on the upper side edge and the lower side edge of the water-absorbent material region 21. The absorbent powder in the embodiment of the present invention may not be located on the upper and lower edges of the absorption layer 2, as shown in fig. 5 and 7, the absorbent powder region 22 is located on the upper and lower sides of the absorbent material region and has a certain distance from the edge of the absorbent material region. Although fig. 4-7 show the water-absorbent powder regions on both upper and lower sides of the absorbent layer as being symmetrical, the water-absorbent powder regions on both sides may also be asymmetrical in practical application, for example, where one side of the water-absorbent powder region is located at the edge of the water-absorbent material region, and the other side of the water-absorbent powder region is not located at the edge of the corresponding water-absorbent material region.

The outline shape of the absorbent powder can be selectively set according to actual conditions, for example, the outline shape is a linear outline as shown in fig. 4 or fig. 5, or a straight line on one side as shown in fig. 6, a curved line on one side, or a curved line on both sides as shown in fig. 7. Although fig. 4-7 illustrate embodiments in which the contour of the same side of the absorbent powder region is either a straight line or a curved line, in practical applications, the contour of the same side of the absorbent powder region may be a polygonal line contour formed by a plurality of straight lines, a contour formed by a plurality of curved lines, or a contour formed by a mixture of straight lines and curved lines.

The embodiment of the utility model provides a sanitary towel, its length is greater than 150mm, is less than 435mm. The length referred to herein refers to the front to back dimension of the sanitary napkin during actual use. In the embodiment shown in FIG. 1, L represents the length of the sanitary napkin, L1 represents the flap length, W represents the width of the sanitary napkin, and W1 represents the absorbent layer width.

The embodiment of the utility model provides an in sanitary towel, its surface course can be the non-woven fabrics or punch the PE membrane, and bottom 3 can be the PE membrane or refuse the water non-woven fabrics for the bottom, and fixed bed 4 can be glue or magic hook.

The utility model discloses surface course can include: a central layer 11 for covering the absorbent layer 2, and side layers 12 positioned on both left and right sides of the central layer 11; the side panels 12 form flaps with corresponding regions of the backsheet 3 as shown in figure 1 and shown. Through setting up the flap, can further promote the side leakage effect of preventing of sanitary towel.

The fixing layer 4 of the embodiment of the present invention may include a central fixing layer 41 and a flap fixing layer 42. As shown in fig. 2, the central fastening layer 41 is located in the region of the backsheet 3 corresponding to the absorbent layer 2, the flap fastening layers 42 are located in the region of the backsheet 3 corresponding to the flaps, and L2 in fig. 2 represents the length of the flap fastening layers 42. The fixing layers are respectively arranged in the corresponding areas of the absorption layers and the corresponding areas of the protective wings, so that the fixing effect can be improved.

The water-absorbing powder has a gel blocking effect, and once the water-absorbing powder is rapidly expanded after absorbing water, the volume of the water-absorbing powder is greatly increased, the particles are piled up together to form a barrier for liquid to permeate again, and if the water-absorbing powder is uniformly distributed on the whole absorbing layer, the absorbability of the sanitary towel is greatly influenced, and the side leakage risk is increased. The embodiment of the utility model provides an in, through only the both sides distribution at the sanitary towel absorbed layer powder that absorbs water, absorbed layer central zone does not contain the powder that absorbs water to the gel blocking effect that the powder brought absorbs water when can avoiding absorbing liquid many times. In addition, the central area of the absorption layer does not contain water-absorbing powder, so that the central area of the absorption layer is not obstructed by the water-absorbing powder, the diffusivity of liquid in the absorption layer can be improved, and the water-absorbing powder on the two sides of the absorption layer can also play a role in preventing side leakage and reducing the probability of side leakage.

The above detailed description does not limit the scope of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sanitary towel comprises a surface layer, an absorption layer (2), a bottom layer (3) and a fixing layer (4); wherein the absorption layer (2) is arranged between the surface layer and the bottom layer (3), and the fixing layer (4) is arranged on the other side of the bottom layer (3); the water-absorbing material is characterized in that the absorbing layer (2) contains water-absorbing powder which is respectively distributed on the left side and the right side of the absorbing layer (2).

2. A sanitary napkin as claimed in claim 1, wherein the width of the absorbent powder-absorbing region on each side of said absorbent layer (2) is less than 20% of the width of the absorbent layer.

3. A sanitary napkin according to claim 1, wherein the absorbent layer (2) is formed by compounding a sheet-like material having water-absorbing property with water-absorbing powder; or the absorption layer (2) is formed by mixing a material with water absorption and water absorption powder.

4. A sanitary towel according to claim 1, characterized in that the contour of the area on each side of the absorbent layer (2) where the absorbent powder is absorbed is formed by straight lines and/or curved lines.

5. A sanitary napkin as claimed in claim 1, wherein said sanitary napkin has a length greater than 150mm and less than 435mm.

6. The sanitary napkin as claimed in claim 1, wherein said facing layer is a nonwoven fabric or a perforated PE film.

7. A sanitary napkin according to claim 1, wherein the backsheet (3) is a PE film or a water-repellent nonwoven fabric.

8. A sanitary napkin according to claim 1, wherein said fastening layer (4) is glue or a magic hook.

9. The sanitary napkin as claimed in claim 1, wherein said facing layer comprises: a central surface layer (11) for covering the absorption layer (2), and side surface layers (12) positioned at the left and right sides of the central surface layer (11); the side surface layer (12) and the corresponding bottom layer (3) form a protective wing.

10. A sanitary napkin according to claim 9, wherein said fastening layer (4) comprises a central fastening layer (41) and flap fastening layers (42); the central fixing layer (41) is positioned in the area of the bottom layer (3) corresponding to the absorption layer (2), and the wing fixing layers (42) are positioned in the area of the bottom layer (3) corresponding to the wings.