CN111374825A

CN111374825A - Disposable absorption article

Info

Publication number: CN111374825A
Application number: CN201910000013.1A
Authority: CN
Inventors: 黄翠玉; 杨鸿勃
Original assignee: Fujian Hengan Hygiene Material Co ltd; Hengan Fujian Holding Group Co Ltd; Fujian Hengan Household Life Article Co Ltd
Current assignee: Fujian Hengan Hygiene Material Co ltd; Hengan Fujian Holding Group Co Ltd; Fujian Hengan Household Life Article Co Ltd
Priority date: 2019-01-01
Filing date: 2019-01-01
Publication date: 2020-07-07

Abstract

The utility model provides a disposable absorbent article, includes liquid-permeable surface course, liquid-impermeable bottom layer and absorption core layer, absorption core layer middle zone has bellied central butt district, at the annular buffer zone in the periphery of central butt district, the width direction both sides of buffer zone also have the absorption core layer, the absorption core layer density of central butt district is D1, the absorption core layer density of buffer zone is D2, the absorption core layer density of article front end, article rear end middle part and buffer zone both sides is D3, the absorption core layer density of rear end both sides portion is D4, and D1 < D2 < D3 < D4.

Description

Disposable absorption article

Technical Field

The present invention relates to a disposable absorbent article for use during the menstrual period of women, and more particularly to a disposable absorbent article having good absorption properties.

Background

In the field of disposable absorbent articles, disposable absorbent articles for use during the menstrual period, in particular women, typically comprise a liquid permeable topsheet material, a liquid impermeable backsheet material, and an absorbent layer positioned between the topsheet material and the backsheet material. Disposable absorbent articles are commonly used to absorb and contain such things as menses, urine, and other discharges from the wearer. The absorbent layer, which is used to collect and store the wearer's waste, typically comprises a fibrous batt or web of thermoplastic fibers, separated wood pulp fibers, loose and fluffed hydrophilic cellulosic fibers, and may also include particles, granules, flakes or fibers of superabsorbent polymer (SAP). When the absorbent article receives excrement such as menstrual blood of a wearer, the excrement is absorbed and stored by the absorbent layer of the absorbent article.

The disposable absorbent article includes a pair of flaps extending laterally outwardly from approximately the central, anterior location of the absorbent core, the flaps being folded about the edges of the crotch region of the wearer's undergarment so that in use, the flaps are disposed between the edges of the crotch region of the wearer's undergarment and the wearer's thighs. Typically, the flaps are provided with flap fasteners, such as adhesive, to attach the flaps to the underside of the wearer's panties. The protective wings can prevent the excrement in the body from polluting the edge of the short pants of a wearer; but also is beneficial to keeping the disposable absorption article still.

Current disposable absorbent articles provide for the absorption of menstrual fluid during the female menstrual period and are available in the market in different thicknesses, such as "slim", "ultra-thin" and "extremely thin" products, which are available for the consumer to choose from. Consumers use products with different specifications and large general absorption capacity according to the menstrual blood volume and different stages in menstrual periods, and the thickness of the products is thicker for facilitating the storage of menstrual blood. The stuffy feeling is strong when the medicine is used, and the damp feeling is strong when the medicine is used and the feeling of sticky paste is often caused because the menstrual blood cannot be timely and effectively diffused in the core body.

Disclosure of Invention

It is an object of the present invention to overcome the disadvantages of the prior art and to provide a disposable absorbent article which provides good dryness while increasing the amount of absorption.

The invention provides a disposable absorption article, which comprises a liquid-permeable surface layer, a liquid-impermeable back layer and an absorption core layer positioned between the liquid-permeable surface layer and the liquid-impermeable back layer, wherein the disposable absorption article is provided with an article front end corresponding to the front side of the body of a wearer, a middle area corresponding to a menstrual blood excretion opening of the wearer and an article rear end corresponding to the buttocks of the body of the wearer in the length direction, an absorption main body is provided with a protective wing extending transversely on two sides of the middle area between the article front end and the article rear end in the width direction, the article rear end corresponding to the rear side of the body of the wearer of the absorption article is wider than the article front end corresponding to the front side of the body of the wearer, and the article rear end is provided with a rear end middle part and a rear end two side parts in the width direction. The regional district that supports of bellied central authorities has, support the annular buffer all around of district at central authorities, the width direction both sides of buffer have the absorption sandwich layer in addition, it leaks the sand grip after preventing with the laminating of groin shape still to be provided with in rear end middle part, central authorities support the district, the absorption sandwich layer density of leaking the sand grip after preventing is D1, the absorption sandwich layer density of buffer is D2, article front end, the absorption sandwich layer density of article rear end middle part and buffer both sides is D3, the absorption sandwich layer density of rear end both sides portion is D4, and D1 < D2 < D3 < D4.

In the disposable absorption article provided by the invention, in the absorption core layer, the gram weight of the absorption core layer of the central abutting area is set to be 100-800gsm, and the gram weight of the absorption core layer of the central abutting area is preferably 400-600 gsm. The grammage of the absorbent core at the front end of the article and in the middle of the rear end of the article is set to 60-400gsm, and the grammage of the absorbent core at the front end of the article and in the middle of the rear end of the article is preferably 100-200 gsm. The grammage of the absorbent core in the rear end side portions is set to 20 to 200gsm, and the grammage of the absorbent core in the rear end side portions is preferably 50 to 100 gsm. Preferably, the absorbent core is provided with grid indentations, which promote different area density differences.

According to the disposable absorbent article provided by the invention, through density difference of different areas, the stuffy feeling and the moist feeling can be reduced while the absorption capacity of the product is increased, good dry and comfortable feeling is provided, the use comfort of the disposable absorbent article is improved, and the menstrual health level of women is improved.

Drawings

FIG. 1 is an expanded schematic view of a disposable absorbent article provided by the present invention;

FIG. 2 is a cross-sectional view taken along line M-M of FIG. 1;

FIG. 3 is a cross-sectional view taken along the direction N-N of FIG. 1;

in the figure, 1 is a disposable absorbent article, 2 is a liquid permeable surface layer, 3 liquid transmission layer, 4 is an absorbent core layer, 5 is a liquid impermeable bottom layer, 1A is the front end of the article, 1B is the middle area, 1C is the rear end of the article, 1CD rear end middle part, 1CW rear end both sides, 7 central butt joint area, 8 buffer area, 9 is the back leakage prevention convex strip, 10 is the grid indentation.

Detailed Description

The invention is further described below by means of specific embodiments.

As used herein, the term "absorbent article" refers to devices that absorb and contain body exudates and, more specifically, refers to devices that are placed against or in proximity to the body of the wearer to absorb and contain the various exudates discharged from the body. The term "disposable" as used herein refers to absorbent articles which are not intended to be laundered or otherwise restored or reused as an absorbent article (i.e., they are intended to be discarded after a single use and, preferably, to be recycled, composted or otherwise disposed of in an environmentally compatible manner). The term "longitudinal direction" refers to the length direction of the disposable absorbent article, and the term "transverse direction" refers to the width direction of the disposable absorbent article.

The terms "liquid pervious" and "liquid impervious" refer to the penetrability of materials in the context of the intended use of disposable absorbent articles. In particular, the term "liquid-permeable" refers to a layer or a layered structure having pores, openings, and/or interconnected void spaces that permit liquid (e.g., water) to enter or pass through its thickness under typical conditions of use (e.g., without the application of substantial or non-representative pressure). Conversely, the term "liquid-impermeable" refers to a layer or a layered structure through the thickness of which a liquid (e.g., water) cannot pass in the absence of a forcing pressure (e.g., under typical use conditions). A layer or a layered structure that is liquid impermeable according to this definition may be permeable to liquid vapor, i.e., may be "vapor permeable". As is well known in the art, one common method for measuring the permeability to water of the materials typically used in absorbent articles is a hydrostatic pressure test, also known as a hydrostatic head test or simply a "hydrohead" test.

The term "non-skin-contact surface side" refers to the side facing the clothing of the wearer (i.e., the side opposite the skin side of the wearer) in both the front and back surfaces of each member of the absorbent article when worn. The term "skin-contact surface side" refers to the side of the front and back surfaces of each member that is disposed on the skin of the wearer when worn.

As shown in fig. 1 to 3, a disposable absorbent article 1 has, in the longitudinal direction (i.e., the longitudinal direction), an article front end 1A disposed at the opposite front end of the wearer when worn, an article rear end 1C disposed at the opposite rear end of the wearer, and an intermediate region 1B between the article front end and the article rear end. The article front end 1A, the intermediate region 1B, and the article rear 1C are regions that are roughly divided into 3 parts in the longitudinal direction of the disposable absorbent article in the unfolded state. When the disposable absorbent article is used, the disposable absorbent article is positioned substantially at the position of the menstrual discharge opening of the user. The absorbent article 1 has an article rear end 1C corresponding to the rear side of the wearer's body wider than an article front end 1A corresponding to the front side of the wearer's body, and has a rear end central portion 1CD and rear end both side portions 1CW in the width direction at the article rear end 1C of the disposable absorbent article. The absorbent main body has wings 6 extending laterally on both sides in the width direction of an intermediate region between the front end and the rear end of the article, and the pair of wings 6 can be folded and bonded to the other side of the wearer's panties to fix the disposable absorbent article in use.

A disposable absorbent article 1 having a liquid-permeable top sheet 2 which is liquid-permeable and an absorbent core sheet 4 which absorbs and stores liquid, and a liquid-impermeable back sheet 5 on the non-skin contact surface side of the absorbent core sheet. Preferably, a liquid transmission layer 4 is arranged between the liquid-permeable surface layer and the absorption core layer as shown in the figure, a raised central abutting region 7 is arranged in the middle area 1B of the absorption core layer, an annular buffer region 8 is arranged around the central abutting region, the absorption core layer is arranged on two sides of the buffer region 8 in the width direction, a back leakage prevention convex strip 9 which can be attached to the femoral sulcus shape is further arranged in the middle 1CD of the rear end, when the disposable absorbent article is used, the back leakage prevention convex strip 9 can be matched with the position of the gluteal sulcus of a user, when the user lies down, menstrual blood is prevented from flowing out along the gluteal sulcus of the user, and the effect of back.

The central abutment zone 7 and the rear leakage prevention ridge 9 have an absorbent core density of D1, the buffer zone 8 has an absorbent core density of D2, the article front end 1A, the article rear end central portion 1CD and both sides of the buffer zone have an absorbent core density of D3, the rear end both sides 1CW have an absorbent core density of D4, and D1 < D2 < D3 < D4. In addition, in the absorbent core layer, the grammage of the absorbent core layer of the central abutment region 7 is set to 100-. The grammage of the absorbent core at the front end 1A and the rear end central portion 1CD of the article is set to 60-400gsm, and the grammage of the absorbent core at the front end 1A and the rear end central portion 1CD of the article is preferably 100-200 gsm. The grammage of the absorbent core in the back end both side portions 1CW is set to 20 to 200gsm, and the grammage of the absorbent core in the back end both side portions is preferably 50 to 100 gsm. Preferably, the absorbent core layer 4 is provided with grid indentations 10, which promote different area density differences.

Alternatively, left and right leakage barriers extending in the longitudinal direction are provided on both lateral sides of the absorbent article, and each of the left and right leakage barriers has a root portion, a side wall portion extending from the root portion, and a free portion. The roots of the left and right leakproof isolation boundaries are jointed with the liquid-tight bottom layer at the transverse outer side of the absorption core layer, the free ends of the left and right leakproof isolation boundaries inwards extend to the edges of the central region below the two side regions of the absorption core layer and close to the absorption core layer, and then the C-shaped folding edge extends to the edges of the two transverse sides of the absorption core layer towards the transverse outer side and then extends to the transverse center around the edges of the two transverse sides of the absorption core layer.

In the present invention, the liquid permeable topsheet material 2 is compliant, soft feeling, and non-irritating to the wearer's skin. Moreover, the liquid permeable facing material 2 should be liquid permeable so that liquid (e.g., urine) can readily pass through its thickness. Suitable liquid permeable topsheet materials 2 can be manufactured from a wide variety of materials, such as porous foams, reticulated foams, apertured plastic films or woven or nonwoven webs of natural fibers (e.g., wood or cotton fibers), synthetic fibers (e.g., polyvinyl acetate or polypropylene fibers), or a combination of natural and synthetic fibers. Preferably, the liquid-permeable top sheet is hydrophilic in the center in the lateral direction and hydrophobic in the lateral side regions. That is, the part of the liquid-permeable surface layer 2 above the absorption core layer is a hydrophilic area, the hydrophilic area can quickly transmit the excrement of the body of a user to the liquid transmission layer 3 and the absorption core layer, the edge parts of the two transverse sides of the liquid-permeable surface layer wrapping the absorption core and the parts below the two side areas of the absorption core layer are hydrophobic areas, and the excrement in the absorption core layer can be effectively prevented from leaking from the sides.

The liquid-impermeable back sheet material 5 is generally disposed on the non-skin contacting side of the disposable absorbent article 1 adjacent to the absorbent core 4. The liquid impermeable backsheet material 5 prevents the exudates absorbed and contained in the absorbent article from soiling articles that may contact the diaper, such as bedsheets and undergarments. In some embodiments, the liquid impermeable backsheet 5 is substantially impermeable to liquids (e.g., urine), the liquid impermeable backsheet material may also consist of more than one layer, wherein the outer layer of the liquid impermeable backsheet 5 (often referred to as the backsheet) may be made of a soft nonwoven material and the inner layer of the backsheet may be made of a substantially impermeable film, such as a thermoplastic breathable film having a thickness of from about 0.012mm to about 0.051 mm. The layers may be joined together using an adhesive or any other suitable material or method. Other suitable backsheet materials may include breathable materials that permit vapors to escape from the disposable absorbent article 1 while still preventing exudates from passing through the liquid impermeable backsheet 5. Exemplary breathable materials may include materials such as woven webs, nonwoven webs, and composites such as nonwoven webs coated with a film layer. Although a variety of backsheet configurations are contemplated herein, it will be apparent to those skilled in the art that various other changes and modifications may be made.

The absorbent core layer 4 can be any absorbent member that is generally compressible, non-irritating to the wearer's skin, and capable of absorbing and retaining liquids such as menstrual fluid and other certain body exudates. The absorbent core is not limited to upper and lower fibrous web layers with a mixed layer of fluff pulp fibers and superabsorbent polymer in between, examples of other suitable absorbent materials include cellulose wadding; the absorption core layer of the disposable absorption article provided by the invention is formed into a three-dimensional core layer through a grinding wheel, and the crushed fluff pulp fibers and the super water-absorbing polymer are fully mixed and then formed in the grinding wheel. The grinding wheel provided by the invention has different negative pressures and different shapes in different areas of the absorption core, and the three-dimensional effect of the core body is realized through the negative pressure and the shape of the grinding wheel.

Claims

1. A disposable absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet and an absorbent core layer disposed between the liquid-permeable top sheet and the liquid-impermeable back sheet, the disposable absorbent article having in a longitudinal direction an article front end corresponding to a wearer's body front side, a middle region corresponding to a wearer's menstrual blood excretory opening and an article rear end corresponding to a wearer's body buttocks, an absorbent main body having transversely extending wings on both sides in a width direction of the middle region between the article front end and the article rear end, the article rear end corresponding to the wearer's body rear side of the absorbent article being wider than the article front end corresponding to the wearer's body front side, the article rear end having in its width direction a rear end middle portion and rear end both side portions, characterized in that: the middle area of the absorption core layer is provided with a raised central abutting area, the periphery of the central abutting area is provided with an annular buffer area, the two sides of the buffer area in the width direction are also provided with the absorption core layers, the density of the absorption core layer of the central abutting area is D1, the density of the absorption core layer of the buffer area is D2, the density of the absorption core layers at the front end of the article, the middle part of the rear end of the article and the two sides of the buffer area is D3, the density of the absorption core layers at the two side parts of the rear end is D4, and D1 < D2 < D3 < D.

2. The disposable absorbent article as set forth in claim 1 wherein the grammage of the absorbent core layer at the central abutment region is set to 100-800gsm, the grammage of the absorbent core at the front end of the article, the middle portion of the rear end of the article is set to 60-400gsm, and the grammage of the absorbent core at both side portions of the rear end is set to 20-200 gsm.

3. The disposable absorbent article as defined in claim 1, wherein the grammage of the absorbent core layer at the central abutment region is set to 400-600gsm, the grammage of the absorbent core at the front end of the article and at the middle portion of the rear end of the article is set to 100-200gsm, and the grammage of the absorbent core layer at both side portions of the rear end is set to 50-100 gsm.

4. The disposable absorbent article of claim 1 wherein the absorbent core is provided with grid indentations that promote density differences in different regions.