CN103260564B - Absorbent article - Google Patents

Abstract

An oblong absorbent article having a liquid-permeable front surface sheet disposed on the skin-contacting side, a back surface sheet disposed on the side that does not contact the skin, and an absorbent disposed between the two sheets, wherein: the absorbent has a longitudinal direction and a width direction orthogonal thereto, and in the region that corresponds to the region of discharge, liquid-conducting structures are disposed in both the longitudinal and width directions of the absorbent that are configured from groove-shaped crevices excavated from the non-skin-contacting side in the thickness direction and pulp fiber-containing concave absorption parts at the bottoms of said crevices on the skin-contacting side; the regions surrounded by the liquid-conducting structures are provided with block-shaped protruding absorption parts that protrude to the non-skin-contacting side, contain pulp fibers and have higher basis weight than the concave absorption parts; and the concave absorption parts of the liquid-conducting structures are of low density and the block-shaped protruding absorption parts are of relatively high density.

Description

Absorbent commodity

Technical field

The present invention relates to the absorbent commodities such as sanitary napkin, disposable diaper, Briefs for incontinence patients.

Background technology

In the absorbent commodities such as sanitary napkin, attempt the materials and structures of each parts of improvement, improve its function and wearing feeling.For absorber, it is also proposed and improve the functional various scheme corresponding with the kind of behaviour in service and article.

Such as, propose in the sanitary towel with positive dough sheet, back sheet and absorber, the scheme (with reference to patent documentation 1) that the multiple compression units caved in from the back sheet side of absorber configure in the mode scattered.This compression unit and slowly not changed by the thickness in the uncompressed portion compressed, forms continuous print and rises and falls, form the density gradient increased from uncompressed portion to compression unit.Thus, the liquid importing absorber from positive dough sheet is promptly introduced into, and can realize the sufficient absorption maintenance dose of liquid, and, can improve and prevent returning fluidity and anti-leakage.In addition, disclose absorbent commodity, it has the absorber (with reference to patent documentation 2) alternately dividing and have high density portion and the low-density portion extended in wire in the vertical.Utilize this absorber, can promote that liquid spreads to the liquid of longitudinal direction, the introducing of liquid is excellent, also can be out of shape neatly the pressure from width.

Prior art document

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2006-55352 publication

Patent documentation 2: Japanese Unexamined Patent Publication 2010-136899 publication

Summary of the invention

Invent problem to be solved

Problem of the present invention is to provide a kind of absorbent commodity, it can improve the absorbent properties of above-mentioned existing absorbent commodity further, more effectively suppress to positive dough sheet residual liquid and return liquid, not easy-to-leak liquid, can promptly tackle when the excretion of body fluid increases quickly, and the health of wearer of fitting, the motility of following its action is well excellent.

For solving the method for problem

The present invention solves above-mentioned problem by following absorbent commodity:

This absorbent commodity, it is elongate shape, the back sheet have the positive dough sheet of the liquid permeability being configured at side, skin contact face, being configured at side, non-skin contact face and the absorber be configured between two panels, described absorber has longitudinally and the width orthogonal with this longitudinal direction

In the region corresponding with excretory portion, in the longitudinal direction of absorber and all directions of width, be configured with the through-liquid structure be made up of the recess absorbent portion containing paper pulp fiber of the bottom of the recess of the channel-shaped caved in a thickness direction from side, non-skin contact face and the side, skin contact face of this recess

In the region surrounded by this through-liquid structure, possess outstanding to side, non-skin contact face and containing paper pulp fiber and the bulk higher than the grammes per square metre of described recess absorbent portion outstanding absorbent portion,

The recess absorbent portion of described through-liquid structure is low-density, and the outstanding absorbent portion of described bulk is relatively high density.

The effect of invention

Absorbent commodity of the present invention, can more effectively suppress to positive dough sheet residual liquid and return liquid, realize the action effect of not easy-to-leak liquid.Further, absorbent commodity of the present invention, can realize can promptly tackling when the draining and increase of body fluid, and be applicable to the health of wearer, follow the action effect of the flexibility excellence of its action well.

Above-mentioned and other feature and advantage of the present invention, can with reference to suitable accompanying drawing, by following record definitely.

Accompanying drawing explanation

Fig. 1 is the axonometric chart cutting a part representing the sanitary napkin of an embodiment as absorbent commodity of the present invention from direction, skin contact face.

Fig. 2 is the II-II line section shown in Fig. 1.

Fig. 3 is the figure of the absorber only schematically illustrating present embodiment, top view when (A) is absorber viewed from its side, skin contact face, and (B) is the B-B line profile of (A), top view when (C) is absorber viewed from its side, non-skin contact face.

Fig. 4 is in the preferable production process of the absorber briefly expressing present embodiment, the specification figure of the state before and after backer roll processing during manufacture.

Fig. 5 is in the preferred manufacture of the absorber schematically illustrating present embodiment, at the profile gathering the process forming absorber precursor with recess on rotating roller surface.

Fig. 6 is the axonometric chart cutting a part of the sanitary napkin of other the embodiment (the second embodiment) represented from direction, skin contact face as absorbent commodity of the present invention.

Fig. 7 is the II-II line section shown in Fig. 6.

Fig. 8 is the fragmentary cross-sectional view of a part for the section of the regulation of the sanitary napkin shown in Watch with magnifier diagram 6.

Fig. 9 is the axonometric chart cutting a part of the sanitary napkin of other the embodiment (the 3rd embodiment) represented from direction, skin contact face as absorbent commodity of the present invention.

Figure 10 is the II-II line section shown in Fig. 9.

Figure 11 is the top view schematically illustrating the absorber of the sanitary napkin shown in Fig. 9 from side, non-skin contact face.

Figure 12 is the fragmentary cross-sectional view of a part for the section of the regulation of the sanitary napkin shown in Watch with magnifier diagram 9.

Figure 13 is the schematic cross sectional view of a part for the form representing the absorber made in reference example and comparative example.

Detailed description of the invention

Below, based on preferred first ~ three embodiment, with reference to as figure, explain the present invention.

[the first embodiment]

Fig. 1 is the axonometric chart cutting a part representing the sanitary napkin of the first embodiment as absorbent commodity of the present invention from direction, skin contact face, and Fig. 2 is the II-II line section shown in Fig. 1.Fig. 3 is the figure of the absorber only schematically showing the first embodiment, top view when (A) is absorber viewed from its side, skin contact face, and (B) is the B-B line profile of (A), top view when (C) is absorber viewed from its side, non-skin contact face.In addition, numerous and diverse in order to avoid in these figure, omits the core covering piece representing absorber.In addition, in figure 3, for the ease of the understanding of the shape of absorber, omit and represent leakage-proof socket.

In the sanitary napkin 10 of present embodiment, side, the skin contact face binding agent etc. of sheet 2 engages and is equipped with absorber 3 overleaf.In addition, the outside of longitudinal left and right sides of the above-mentioned absorber 3 in the side, skin contact face of this back sheet 2, sheet 2 is bonded to side sheet 4 overleaf.In the part that this back sheet abuts with side sheet, clip positive dough sheet 1 by back sheet 2 and side sheet 4, and towards interior side on the width (X-direction) of this sanitary napkin 10, positive dough sheet 1 is configured at than absorber 3 more by the position of side, skin contact face.Above-mentioned each chip part that such lamination obtains does not pass through the joints such as heat-sealing across absorber 3 ground in the foreign side of absorber 3, forms the edge, periphery 6 of sanitary towel 10.This edge, periphery 6 does not hinder overall retractility, and the degree do not revealed with the liquid temporarily absorbed is engaged.Form the pocket (not shown) of circumference 6 toward the outside at the free end 41 of side sheet 4, there is the effect preventing liquid etc. from laterally revealing.In addition, in the width left and right sides portion of the sanitary napkin 10 of present embodiment, the alar part 42 with side sheet 4 extends to the width foreign side of sanitary napkin 10, by this part being rolled up in the side, non-skin contact face of the crotch bottom of medicated underpants, sanitary napkin 10 is fixed on medicated underpants.

In the side, skin contact face of sanitary napkin 10, exert pressure to arrange from side, skin contact face to the absorber 3 of positive dough sheet 1 and compress the leakage-proof socket 5(that obtains and see figures.1.and.2).The plan view shape of leakage-proof socket 5 is, at longitudinal middle body of absorber 3, there is in the width left and right sides configuration of the excretory portion corresponding regions such as menses the compression section of length in the vertical, the center direction of each compression section in this left and right along with the front and back end close to absorber 3 gradually to absorber 3 bends, and in front end, rear end is consistent.That is, overlook see time, leakage-proof socket 5 is continuously the shape (with reference to Fig. 1) of endless loops for extending in the longitudinal direction at two compression sections of its side, skin contact face configuration in longitudinal both sides of sanitary napkin 10.

By such process, the transverse direction of discharged liquid when can effectively prevent wear sanitary napkins from using is revealed.In addition, excretory portion corresponding region refers to the part of the excretion directly receiving menses or leucorrhea etc. and neighbouring part thereof, and being the middle body of the longitudinal direction of the sanitary towel 10 of present embodiment, is the position being configured with alar part 42.In addition, the plan view shape of the leakage-proof socket 5 of present embodiment is not limited to above-mentioned shape, mutually can intersect, preferably suitably determine according to purposes in the front end of endless loops, rear end.

Carry out later describing about the material of positive dough sheet 1, back sheet 2, side sheet 4 and absorber 3 and the detailed content of size.In present embodiment, from the view point of positive dough sheet 1 rapidly absorbing and excreting liquid and be sent to the viewpoint of absorber and the comfortable of skin sense of touch, preferably use hydrophilic hot-wind nonwoven cloth.In addition, as back sheet 2, use the poisture-penetrability film with breathability of monolayer.As absorber 3, the material that core covering piece (not shown) the coated paper pulp fiber etc. for paper using etc. obtains with high water absorbency polymer.In addition, the side, non-skin contact face of sheet 2, is coated with the bonding agent (not shown) sanitary napkin 10 being fixed on medicated clothing overleaf.By this bonding agent, sanitary napkin 10 is bonded and fixed to the medicated clothing of user.The sanitary napkin 10 of present embodiment, makes its positive dough sheet side towards the side, skin contact face of wearer and makes it longitudinally from hypogastric region configuration to buttocks, and its width is dressed towards the direction configuration of the line connecting left and right lower limb.

In the present invention, unless otherwise specified, the face of the side with human contact is called skin side or skin contact face or front, the face with its opposition side is called non-skin face or non-skin contact face or the back side.In these two faces, the side near skin side or its extending direction are called side, skin face, side, skin contact face or face side, the side near non-skin face or its extending direction are called side, non-skin face, non-side, skin contact face or rear side.The direction be positioned on front side of human body during wearing is called front, using its end as leading section, the direction being positioned at rear side is called rear, using its end as rearward end, is described.The front of absorbent commodity or the normal direction at the back side are called thickness direction, are measured and be called thickness.In addition, by when overlooking absorbent commodity from veutro portion throughout crotch bottom until the direction of drosal part is called longitudinal direction, the direction orthogonal in this longitudinal direction is called width.In addition, above-mentioned longitudinal direction is consistent with the fore-and-aft direction of human body under typical wearing state.

The absorber 3 of present embodiment is the material obtained with the fine thing of mixed product of the coated paper pulp fiber of core covering piece and high water absorbency polymer.Absorber 3 at least has the high-density region 38 that absorber raw material (forming fiber and superabsorbent polymer) exists with the state of densification in the region corresponding with excretory portion, and the density regions 39 that absorber raw material exists with sparse state compared with high-density region 38.As shown in Fig. 3 (A), density regions 39 is continuous at in-plane, and high-density region 38 is surrounded by density regions 39, forms the configuration of the sea-island structure scattered.

On the thickness direction of density regions 39, as shown in Fig. 3 (B), be configured with by the interstitial recess 31 and be positioned at the recess absorbent portion 34 containing paper pulp fiber of bottom of its side, skin contact face from the side, side direction skin contact face, non-skin contact face of absorber 3 depression.As shown in Fig. 3 (B) and (C), recess 31 is corresponding with density regions 38, and the longitudinal direction in the side, non-skin contact face of absorber and width configure respectively.When the configuration of this longitudinal direction and width refers to and overlooks absorber 3, multiple recess 31 configures at predetermined intervals.Therefore, the row permutation configuration at predetermined intervals in the direction of the width of the recess extended in the vertical, configures in the permutation at predetermined intervals that is listed in longitudinally of the recess of width extension.

In addition, the row of recess 31 can be continuous print also can be interrupted.As shown in Fig. 3 (A) and (B), recess absorbent portion 34 is corresponding with recess 31 to be configured.This recess 31 and recess absorbent portion 34 are formed as through-liquid structure, do not return liquid by promptly being introduced to thickness direction by the liquid of the side, skin face of absorber 3, effectively promote liquid to the maintenance of outstanding absorbent portion 33 and fix.This point is carried out describing later.In addition, as on the thickness direction of high-density region 38 by the part that recess 31 surrounds, be divided into the outstanding absorbent portion 33(of multiple bulks of giving prominence to dough sheet 2 side of supporting or opposing with reference to Fig. 3 (B) and (C)).Outstanding absorbent portion 33, containing paper pulp fiber and water absorbent polymer, absorbs and keeps discharged liquid.

In present embodiment, the shape of each outstanding absorbent portion 33 is the roughly rectangular shape in the vertical with length.Being configured to of outstanding absorbent portion 33, from the top view viewed from the side, non-skin contact face of absorber 3, mutually to have gap s, r(of regulation in its natural state with reference to Fig. 3 (C)) mode in direction permutation configuration in length and breadth.This configuration is when multiple outstanding absorbent portion 33 being projected in longitudinal direction and width, in the configuration that its projection image of either direction is all overlapping.Absorber 3 entirety comprising this recess absorbent portion 34 and outstanding absorbent portion 33 is formed as not having jointed integrative-structure.

Be configured at the outstanding absorbent portion 33 of high-density region 39, the raw-material density of absorber is high compared with recess absorbent portion 34, capillary force is high, and be the part of the high grammes per square metre higher than recess absorbent portion 34 thickness, therefore, the absorption maintenance dose of liquid is also high.That is, outstanding absorbent portion 33 is mainly undertaken and is made liquid keep immobilized function.On the other hand, be configured at the recess absorbent portion 34 of density regions 38 compared with outstanding absorbent portion 33, density is relatively low, and is the part that Thickness Ratio gives prominence to the thin low grammes per square metre of absorbent portion 33.Therefore, the logical liquid resistance of recess absorbent portion 34, lower than outstanding absorbent portion 33, can not lose the pressure loss of liquid, make liquid promptly on the thickness direction of absorber 3 through.

For this point, with reference to Fig. 3 (B) be described, be configured with outstanding absorbent portion 33 absorber 3 high-density region 38 compared with, the grammes per square metre being configured with the density regions 39 of the absorber of recess 31 and recess absorbent portion 34 is low, and density is also low.Recess absorbent portion 34 introduces rapidly liquid (Fig. 3 (B) arrow a ₁), the multiple outstanding absorbent portion 33 be adjacent is by the further absorbing fluid of its capillary force (Fig. 3 (B) arrow c ₁), this liquid can be remained fixed in the position that the side, ratio skin face of absorber 3 is farther.

In addition, recess absorbent portion 34 is connected at in-plane with the part 33a of the side, skin contact face of outstanding absorbent portion 33, forms the continuous portion 35(of the side, skin contact face of absorber 3 with reference to Fig. 3 (B)).Continuous portion 35 is smooth shape relative to positive dough sheet 1.Formed the side, skin contact face of absorber 3 by smooth continuous portion 35, positive dough sheet 1 is good with contacting of absorber 3, and the liquid that have passed positive dough sheet 1 easily imports absorber 3.

For continuous portion 35, be described with reference to Fig. 3 (A), as mentioned above, continuous portion 35 is divided into the density regions 39 be made up of recess absorbent portion 34 and the high-density region 38 be made up of the part 33a of outstanding absorbent portion 33.In this continuous portion 35, by low grammes per square metre and the density regions 39 that low-density recess absorbent portion 34 is formed forms the drain path suppressing liquid maintenance dose, and, this density regions 39 is expanded continuously on the in-plane of absorber 3, thereby, it is possible to by the liquid from front sheet 1 on a large scale in promptly introduce inside (Fig. 3 (A) the arrow b of absorber 3 ₁).

Have passed the liquid of recess absorber 34, disperse in multiple outstanding absorbent portion 33 on the one hand, be sucked out, keep fixing (Fig. 3 (B) arrow c ₁), on the other hand, be temporarily ingested (Fig. 3 (B) arrow c in recess 31 ₂).The Liquid Absorption of recess 31 of being ingested is held in outstanding absorbent portion 33.Certainly, also maintenance liquid can directly be absorbed from the part 33a (part in continuous portion 35) of outstanding absorbent portion 33.But in the disposable a large amount of excretion of the liquid of the high viscosities such as menses or when repeatedly draining, even if disposablely can not absorb maintenance by outstanding absorbent portion 33, also by being introduced into recess absorbent portion 34 rapidly, recess 31 plays the pooling feature temporarily keeping liquid.Further, as mentioned above, by being connected with recess 31 (with reference to Fig. 3 (C)) in the side, non-skin contact face of absorber 3, can liquid be made to move (Fig. 3 (C) arrow d at in-plane in the position more farther than positive dough sheet 1 ₁), absorb in multiple outstanding absorbent portion 33 reliably distributed on a large scale and keep (Fig. 3 (C) arrow d ₂).

Such utilization comprises the through-liquid structure of recess absorbent portion 34 and recess 31, and liquid promptly takes in the inside of absorber 3 from positive dough sheet 1 side, can reliably be kept by absorption in outstanding absorbent portion 33.Thus, can the residual liquid of side, skin contact face of decrease uptake body 3, and not easily produce and return liquid from absorber 3 inside to positive dough sheet 1.

In the sanitary towel 10 of present embodiment, even if apply the pressure of thickness direction in wearing, the discharged liquid such as menses also not easily return liquid to positive dough sheet 1 side.A major reason is the sea-island structure that the mode existed in density regions 39 with above-mentioned high-density region 38 configures, make side, the skin contact face not residual liquid at positive dough sheet and absorber 3, be introduced in a thickness direction rapidly, remain secured to multiple outstanding absorbent portion 33.In addition, the through-liquid structure comprising above-mentioned recess absorbent portion 34 and recess 31 effectively plays and promotes that the effect of liquid is returned in the introducing of liquid and movement, suppression.

Specifically, the effect produced by following multiple effect can be thought: recess absorbent portion 34 does not keep liquid, is promptly incorporated into recess 31; The continuous print variable density that formed by the recess absorbent portion 34 as density regions and the outstanding absorbent portion 33 as high-density region 38 (can by the structural allocation of high amount of liquid high diffusivity), based on the diffusibility of appropriateness, the liquid not introducing recess completely is promptly spread at in-plane; The liquid of temporary transient introducing recess 31 moves to position relatively far away, the side, ratio skin contact face of absorber 3; By having the through-liquid structure of recess 31, make liquid movement rapidly in the side, non-skin contact face of absorber 3, absorb and be held in outstanding absorbent portion 33, therefore, the storage of recess 31 self is also constant many.In addition, by the existence of recess absorbent portion 34, the pressure putting on recess 31 is relaxed, and by this pressure, the movement of the liquid in the through-liquid structure with recess 31 is promoted, and this also can think one of reason.

In addition, absorber 3, owing to being support the form of its skin contact face to non-skin contact face with the outstanding absorbent portion 33 of high-density region 38, not easily occurs the distortion of the pressure of thickness direction, and suppression is returned to liquid and prevented twisted is effective.By the not residual liquid and promptly introduced recess 31 in positive dough sheet 1 side of absorber 3 like this, even if be subject to the pressure of thickness direction, liquid also effectively can be suppressed to the liquid that returns of positive dough sheet 1 side, obtain good dry feeling.In addition, the side, non-skin face of absorber 3 is the concaveconvex shape divided by recess 31 in length and breadth, thus, this part has the pliability of longitudinal direction and width, sanitary napkin 10 be suitable for the fluctuating in skin face " health fit " and follow well wearer action, to prevent that between skin " row is followed in action " in the gap of part extremely improves.

In the present invention, the configuration of outstanding absorbent portion 33, except being configured to of present embodiment, also can suitably arrange according to purposes and function selecting, such as, also can be the staggered arrangement configuration of roughly half pitch (the above-mentioned projection image stagger viewed from longitudinal direction and/or width).In addition, the shape of outstanding absorbent portion 33, except the shape of present embodiment, also suitably can adopt arbitrary shape according to purposes and function.

Like this in order to recess absorbent portion 34 suppresses the maintenance dose of liquid, liquid is promptly moved to recess 31, recess 31 has the function of the interim storage of discharged liquid, make liquid not to positive dough sheet 1 side adverse current, as the average density (m of the component parts of the absorber of the recess absorbent portion 34 of density regions 39 ₁) be preferably 0.02 ~ 0.09g/cm ³, be more preferably 0.03 ~ 0.08g/cm ³.In addition, in order to reliably keep and fixing liquid, as the average density (m of the component parts of the absorber of the outstanding absorbent portion 33 of high-density region 38 ₂) be preferably 0.10 ~ 0.25g/cm ³, be more preferably 0.10 ~ 0.20g/cm ³.In addition, outstanding absorbent portion 33 is the parts being become densification by compression during manufacture, but, even if do not form uniform density at its thickness direction, as long as density ratio recess absorbent portion 34 is high as a whole, as the average density (m of the recess absorbent portion 34 of density regions 39 ₁) and the average density (m of outstanding absorbent portion 33 as high-density region 38 ₂) ratio (m ₁/ m ₂) be preferably less than 0.80, be more preferably less than 0.60.About this ratio (m ₁/ m ₂), by being below the upper limit, in density regions 39, temporarily keep liquid, by the capillary force played a role between high-density region 38, high-density region 38 embodies the absorbing mechanism of efficiency attracting holding liquid well.

In addition, due to same reason, the density regions 39(with recess absorbent portion 34 and recess 31 is with reference to Fig. 3 (B)) the average grammes per square metre (w of component parts of absorber ₁) be preferably 10 ~ 160g/m ², more preferably 20 ~ 150g/m ².The high-density region 38(with outstanding absorbent portion 33 is with reference to Fig. 3 (B)) the average grammes per square metre (w of component parts of absorber ₂) be preferably 160 ~ 400g/m ², be more preferably 200 ~ 350g/m ².In addition, the average grammes per square metre ratio (w of the component parts of both absorbers ₁/ w ₂) be preferably 0.01 ~ 0.90, be more preferably 0.1 ~ 0.7.The degree of depth (the h of recess 31 ₂) relative to the thickness thickness of absorber 33 (the outstanding) (h of absorber 3 ₁) ratio (%) (with reference to Fig. 2) be preferably 20 ~ 98%, be more preferably 30 ~ 70%.

In the present invention, recess 31 caves in and interstitial part from the bottom of absorber 3 to side, skin contact face.Recess absorbent portion 34 is parts of the absorber 3 on the top being positioned at this recess 31, is the part (with reference to Fig. 3 (B)) of the absorber 3 that imaginary line t, the t extended in a thickness direction by 31a, 31a bottom wall divides.Outstanding absorbent portion 33 is adjacent with the region 39 of the recess 31 arranged in a thickness direction and recess absorbent portion 34, and the part (with reference to Fig. 2 and Fig. 3 (B)) in the region 38 of top to the bottom from absorber surrounded by region 39.

[assay method of the average density of high-density region 38 and density regions 39]

The density of above-mentioned definition middle-high density region 38 and density regions 39 is the density be added together as paper pulp fiber and the high water absorbency polymer of the component parts of absorber 3.Absorber 3 imaginary line t, t that 31a, 31a bottom the wall from recess 31 extend in a thickness direction is cut off, as the outstanding absorbent portion 33 of high-density region 38 and the recess absorbent portion 34 of density regions 39, distinguished the size of cut-out length 50mm, width 5mm, prepared sample.Then, use electronic balance (A & D Inc. electronic balance GR-300, precision: below arithmetic point 4), the quality of working sample.Use constant-pressure type thickness gauge working sample thickness, the quality of the sample recorded is calculated the density of all material at the position of regional divided by the volume (thickness × length x width) of sample.In addition, with pressure during the mensuration of low pressure thickness gauge for 0.5g/cm ²carry out.Average density, by preparing 10 samples at any part, is obtained its meansigma methods and obtains.

[assay method of the average grammes per square metre of high-density region 38 and density regions 39]

Average grammes per square metre (the w of high-density region 38 ₂) and the average grammes per square metre (w of density regions 39 ₁) assay method be: measure the area of regional that will measure in advance, cut off this mensuration region at above-mentioned imaginary line t, t cutter, measure the quality of this cutting portion.By the quality that records divided by area, measure the average grammes per square metre of each density area.Average grammes per square metre, by preparing 10 samples at any part, is obtained its meansigma methods and obtains.

[outstanding absorbent portion 33 and recess absorbent portion 34(and recess 31) the mensuration of thickness]

First, can be divided into: recess 31 is the depression and have the part in space from the bottom of absorber 3 to side, skin contact face, and recess absorbent portion 34 is for being positioned at the part (Fig. 3 (B)) be made up of the raw material of absorber 3 on the top of recess 31.Outstanding absorbent portion 33 can be divided into the adjacent and besieged part (Fig. 3 (B)) from top to bottom be made up of the raw material of absorber 3 of density regions 39 with the recess 31 arranged in a thickness direction and recess absorbent portion 34.The boundary of this outstanding absorbent portion 33 and recess absorbent portion 34 and recess 31, can be defined as imaginary line t, t(Fig. 3 (B) that 31a, 31a bottom the wall of recess 31 extend in a thickness direction).

Thickness (the h of the recess absorbent portion 34 of such division ₃=h ₁-h ₂) and the thickness (h of outstanding absorbent portion 33 ₁) be determined as follows and carry out: be 37mm × 37mm by size, the acrylate plate of thickness 3mm (acrylic plate) be placed on absorber 3, use KEYENCE Inc. non-contacting Laser Displacement meter (LaserHead LK-G30, displacement meter LK-GD500), measure the thickness (h of outstanding absorbent portion 33 ₁), use KEYENCE Inc. microscope VHX-1000 to measure the section of the Fig. 2 corresponding to absorber, record the thickness (h of recess absorbent portion 34 ₃).

Then, the preferred manufacture method of above-mentioned sanitary napkin 10 is described with reference to Fig. 4 and Fig. 5.In addition, the quantity of the shape of absorber 3, recess 31 and outstanding absorbent portion 33 and shape, configuration etc., also can not be necessarily identical with the sanitary napkin shown in Fig. 1,2 for schematically to illustrate.

The figure of the manufacturing installation 60 of the absorber that Fig. 4 preferably uses when being the manufacture of the absorber 3 representing sanitary napkin 10.Manufacturing installation 60 as shown in Figure 4, possesses: be formed with multiple accumulation recess 9(accumulation portion at predetermined intervals at outer peripheral face) going barrel 62; Towards the outer peripheral face of going barrel 62 with the pipeline 63 of the state supply fibrous material S that disperses; Pipeline 63 is supplied to the fibrous material supply unit 64 of fibrous material S; That is raked by the fibrous material being piled into the excess quantity overflowed in accumulation recess 9 scrapes roller (scuffing roll) 65; With the coated mechanism (not shown) of the top and bottom of the coated accumulation body from accumulation recess 9 demoulding of core covering piece 3b (absorber precursor) 70; The absorber continuum obtained with the coated absorber precursor 70 of core covering piece 3b is pressurizeed between a pair backer roll 66a, 66b and the compressor 66 compressed; Suction body body continuum after compression is cut to the size that each sanitary napkin uses and forms the shearing device (not shown) of the absorber after processing 3.

Going barrel 62 is formed as cylindric, and arrow A direction is in the diagram driven in rotation with certain speed.Multiple accumulation recess 9 is formed at the outer peripheral face of going barrel 62.At the non-rotating part of the inner side (rotation shaft side) of going barrel 62, be connected with suction fan (not shown), by the driving of this suction fan, the space B that the separation inside going barrel obtains and E are maintained negative pressure.The bottom surface sections of each accumulation recess 9 is made up of web plate, has multiple pore.Each is piled up with recess 9, and during the space B by being maintained negative pressure, E, the pore of the bottom surface sections of each accumulation recess 9 plays a role as suction hole.

What the blowout end 63a and being connected with that pipeline 63 is configured to have a part for the outer peripheral face covering going barrel 62 connect fibrous material feedway 64 is blown into end 63b, by the attraction of the bottom surface sections from the accumulation recess 9 be positioned in space B, in pipeline 63, produce the air stream flowed towards the outer peripheral face of going barrel 62.Fibrous material supply unit 64 possesses fiber disintegrator 64e, the raw material S ' of the lamellars such as paper pulp sheet is imported fiber disintegrator 64e by niproll (niproll) 64d of raw material supplying, is supplied by the fibrous material S after fibrillation (size degradation) in pipeline 63.

Scrape roller 65 and around there is brush, get by this brush rake the fibrous material S overflowed from accumulation recess 62.Do not scraped roller 65 rake get and the accumulation body (absorber precursor) 70 that remains in accumulation recess 9 in the below of going barrel 62 from accumulation recess 9 demoulding.Be maintained malleation from the demoulding of accumulation recess 9 by the space D separation in going barrel 62 obtained by not shown presser unit, from the pore blow out air of accumulation by the bottom surface sections of recess 9, and carry out attraction to carry out from suction conveyor 67 side.Above-mentioned coated mechanism possesses the known carrying mechanism to suction conveyor 67 supplying core covering piece 3b, and be configured to: load accumulation body (absorber precursor) 70 on core covering piece after, the both sides of this core covering piece are turned down, by the upper and lower surface of the coated accumulation body of this turnover core covering piece 3b (absorber precursor) 70 on this accumulation body (absorber precursor) 70.In addition, omit the detailed content of turnover operation in Fig. 4, the state of the core covering piece 3b after turnover also simply represents with 2 lines.

Use the manufacturing installation 60 of the absorber shown in Fig. 4, the method manufacturing above-mentioned absorber 3 is described.

First, make going barrel 62 and scrape roller 65 to rotate, and, make above-mentioned suction fan and the running of above-mentioned presser unit, make space B and E be negative pressure, make space D be malleation.In addition, suction conveyor 67, compressor 66 and above-mentioned shearing device is made to operate.By the running of suction fan, produce captivation in the bottom surface sections being positioned at the accumulation recess 9 in space B, and, in pipeline 63, produce the air stream flowed towards the outer peripheral face of going barrel 62.Like this, fibrous material feedway 64 is operated, to supply fibrous material S(paper pulp fiber 41 and high water absorbency polymer 42 in pipeline 63), then this fibrous material S becomes dispersity, by means of the air stream of flowing in pipeline 63, supplied by the outer peripheral face to going barrel 62.

Each piles up with recess 9, by period in the space B being maintained negative pressure, attracted to each accumulation recess 9 and pile up from the fibrous material S of pipeline 63 supply.At each accumulation recess 9, piling up the fibrous material of excess quantity a little, getting with scraping roller 65 rake the fibrous material overflowed in accumulation recess 9.Do not remained in accumulation body (absorber precursor) 70 demouldings in accumulation recess 9 on the core covering piece 3b of supply on suction conveyor 67 by what scrape that roller 65 rake gets.

Be described with reference to the formation of Fig. 5 to this absorber precursor 70.In Fig. 5, for the ease of the understanding of the fluctuating of absorber shape, do not illustrate accumulation recess 9 overall, and the part cutting configuration two juts 51 illustrates.

Accumulation shown in Fig. 5 (a) is inner with recess 9, separated by the jut 51 of Fig. 5 (a), pile up the fibrous material S of the mixture as paper pulp fiber 41 and high water absorbency polymer 42, when gradually piling up, as shown in Fig. 5 (b), pile up the height exceeding jut 51, form the absorber precursor 70 of Fig. 5 (c).The part 74 that jut 51 is piled up forms the recess absorbent portion 34 of absorber 3, and the part 71 that jut 51 exists forms the recess 31 of absorber 3.The part 73 of piling up in the accumulation recess between above-mentioned projection is formed by the outstanding absorbent portion 33 ' before compressing.Like this, the part 75 of piling up higher than jut 51 forms the continuous portion 35 of absorber 3.

After accumulation body (absorber precursor) 70 on core covering piece 3b is coated by the both sides of the core covering piece 3b turned down, import compressor 66, pressurized between a pair backer roll 66a, 66b.Thus, outstanding absorbent portion 33 ' is compressed, and is shaped to the outstanding absorbent portion 33 of high-density region.Afterwards, cut off with not shown cutting unit, form the absorber 3 of the size used in each sanitary napkin.In addition, the method for above-mentioned pressurization, except backer roll 66, also can use plane pressuring machine to carry out the method compressed.Have nothing to do with compression method, the condition preferably 0.5 ~ 5kgf/cm of pressurization ², more preferably 1 ~ 4kgf/cm ².

Like this, absorber 3 is one-body molded, is formed concavo-convex with the shape of the jut 51 in accumulation recess together with configuring.Recess absorbent portion 34 due to its thickness thin, grammes per square metre is lower than outstanding absorbent portion 33, and to utilize the compression of embossing etc. to be formed different, the logical liquid resistance of recess absorbent portion 34 is lower, easily makes liquid become rapid to the movement of thickness direction.In addition, there is not the hard part that compressions such as utilizing embossing is formed in the absorber 3 be integrally formed like this, therefore, skin contact sense is good.Dress when there is the sanitary towel 10 of this absorber 3, hard part and experience the softness of absorber 3 can not be felt by positive dough sheet 1.Further, by the part of recess 31, there is pliability, therefore, can be fit and obtain good wearing feeling with health.

In the present embodiment, the high water absorbency polymer of absorber 3 inside exists equably, but, liquid is returned in order to effectively suppress further, this high water absorbency polymer preferably compared with the continuous portion 35 containing recess absorbent portion 34 more bias be configured in outstanding absorbent portion 33, more preferably compared with the continuous portion 35 containing recess absorbent portion 34 in outstanding absorbent portion 33 more bias be configured in its side, non-skin face.In addition, the preferred side, non-skin face at recess 31 configures high water absorbency polymer from the same viewpoint.

In addition, in the absorber 3 of present embodiment, preferably there is the part of through-liquid structure configuration to the width foreign side of leakage-proof socket 5 of recess 31.By this configuration, be also endowed pliability to the both sides of the absorber 3 easily causing side leakage, can be out of shape in the mode of the inner side surrounding the lower limb of wearer, fit with under crotch, the action can following the health of wearer prevents gap.

The outstanding absorbent portion 33 of present embodiment and the size and shape of recess 31 are not particularly limited, more or less different according to the purposes of the absorbent commodity used, the longitudinal length k of outstanding absorbent portion 33 ₁(with reference to Fig. 3 (C)) is preferably 5 ~ 40mm, is more preferably 10 ~ 25mm.Its width length k ₂be preferably 3 ~ 40mm, be more preferably 5 ~ 15mm.In addition, the longitudinal length s of recess 31 is preferably 1 ~ 5mm, is more preferably 1 ~ 3mm.Width length r is preferably 1 ~ 5mm, is more preferably 1 ~ 3mm.

[the second embodiment]

Then, with reference to Fig. 6 ~ 8, the sanitary napkin as the second embodiment of absorbent commodity of the present invention is described.Fig. 6 is the axonometric chart cutting a part representing the sanitary napkin of the second embodiment as absorbent commodity of the present invention from direction, skin contact face.Fig. 7 is the II-II line section shown in Fig. 6.A part for the regulation section of the sanitary napkin shown in Fig. 6 is amplified the fragmentary cross-sectional view represented by Fig. 8.

Below, omit the part repeated with above-mentioned first embodiment, the second embodiment of the present invention is described.In addition, above-mentioned first embodiment and this second embodiment are not independent and exclusive relations, and such as, the second embodiment also can be included as the subordinate concept of above-mentioned first embodiment.In addition, invention and the invention of the second embodiment of the first embodiment form single inventive concept based on identical or corresponding specified features, there is relevant technical relation.The symbol identical to marks such as identical parts, omits the description (wherein, size and detailed position relationship are according to the accompanying drawing corresponding with each embodiment) sometimes.

The sanitary napkin 20 of the second embodiment is only positive dough sheet from the different of component parts of the sanitary napkin 10 of above-mentioned first embodiment.The positive dough sheet of the second embodiment is represented with symbol 21.Positive dough sheet 21 has the outstanding part of multiple rule in side, skin contact face and side, non-skin contact face, this protuberance is configured at the same position (with reference to Fig. 6 ~ 8) of side, skin contact face and side, non-skin contact face.The detailed content of positive dough sheet 21 is as described below.

The positive dough sheet 21 of present embodiment as shown in Figure 7, from lamination upper strata, side, skin contact face 11, this two fibre layers of lower floor 12 and being formed.

Upper strata 11, lower floor 12 are engaged by the crimping based on embossing in multiple embossed portion 15.Upper strata 11 is implemented embossing when overlooking in identical position with lower floor 12, caves in and form multiple valley in embossed portion 15.Like this, the region that the non-embossed portion between valley, i.e. embossed portion 15 surround forms teat 14.The teat 14a on upper strata 11 is outstanding to side, skin contact face, and the teat 14b of lower floor 12 is outstanding to side, non-skin contact face.This teat 14a and 14b is configured with multiple when overlooking regularly in the same position of upper strata 11 and lower floor 12 in the same manner as above-mentioned embossed portion 15, thus, is formed with multiple jog on upper strata 11 and lower floor 12 throughout whole region.Like this, overall as positive dough sheet 21, be formed with multiple jog throughout its whole region.

Form the embossed portion 15 of the valley of upper strata 11 and lower floor 12, the fiber being positive dough sheet 21 is by the part of densification, and compared with the teat 14 of positive dough sheet 21, fibre density is high, and capillary force is high.Thereby, it is possible to effectively make discharged liquid from positive dough sheet 21 to absorber 3 promptly through.Specifically, the part that the paragraphs of Japanese Unexamined Patent Publication 2004-166849 publication [0007] ~ [0045] is recorded can be used.

In present embodiment, the roughly cross shape (with reference to Fig. 6) that each embossed portion 15 is intersected for making two major axis.Be positioned at adjacent two embossed portion 15,15 of beeline, configure in the mode be present on the roughly extended line of its long axis direction.Thus, to be formed between embossed portion 15 and teat 14 towards multiple directions at positive dough sheet 21 and form the density gradient of fiber, the diffusion of the liquid of positive dough sheet 21 and improving to the permeability of the liquid of thickness direction.The shape of this embossed portion 15 and configuration, except the shape of present embodiment with except being configured to, also can be circular or square embossing is at random scattered, the density gradient that has and form fiber can be adopted and can realize liquid diffusion and to thickness direction rapid through shape and configuration.

Here, the feature of the above-mentioned absorber 3 that is divided describing sanitary napkin 20 in detail based on Fig. 8 and the dynamic action of positive dough sheet 21.A part for the regulation section of the sanitary napkin shown in Fig. 6 is amplified the fragmentary cross-sectional view represented by Fig. 8.In addition, multifarious in order to avoid figure, do not represent back sheet 2 and side sheet 4, the shape aligning dough sheet 21 schematically shows, and is not necessarily the shape identical with illustrated shape in enforcement of the present invention.

Positive dough sheet 21 is as described above by the capillary force utilizing density gradient, and the liquid of excretion is high to the liquid mobility of thickness direction, can make to be rapidly to absorber 3 from the liquid of body excretes and move.In addition, same position (with reference to Fig. 8) is formed in a thickness direction by the teat 14a on upper strata 11 and the teat 14b of lower floor 12, liquid is easy to move in the mode concentrating on a position in plane, even little liquid measure also imports to absorber 3, effectively to absorber 3 side through, so preferably.Particularly, upper strata 11 is different with fibre density in lower floor 12, and when the fibre density height of lower floor, liquid is easily stranded in the lower layer side of positive dough sheet, by forming the structure that liquid is concentrated, has by the shielding of positive dough sheet, the low effect returning fluidity raising dry feeling.Absorber 3 is described above, has multiple recess 31, be configured with recess absorbent portion 34 in its skin contact face in side, non-skin contact face.The logical liquid resistance of recess absorbent portion 34 lower than other absorber part, using this part as chamber, the liquid a of excretion ₁thickness direction promptly towards absorber 3 is absorbed.Then, at the liquid of the thickness direction movement of absorber 3, wherein a part forms the mobile liquid a towards peritropous outstanding absorbent portion 33,33 ₂, other part becomes the storage solution a taking in recess 31 ₃.Like this, by from positive dough sheet 21 through liquid introduced, to a by recess absorbent portion 34 ₂and a ₃dispersion, reduces at the maintenance dose of the face side of absorber, and logical liquid resistance reduces further.Thus, also can effectively suppress to return liquid to positive dough sheet 21.

Like this, the sanitary napkin 20 of this embodiment can play the performance of the positive dough sheet 21 of the high liquid permeability had to thickness direction fully by the high liquid permeability to thickness direction with the absorber 3 of recess 31, thus, realize suppressing the moisture taken in return liquid to skin, give good dry feeling to user.

As mentioned above, in sanitary towel 20, positive dough sheet 21 can make liquid concentrate while move, therefore, it is possible to reduce the liquid residue (raising dry feeling) of positive dough sheet 21, the part directly contacted with absorber 3 is few, therefore, it is possible to suppress to return liquid.In addition, in positive dough sheet 21 like this, the density regions 39 of absorber 3 and high-density region 38 are formed in side, skin contact face, the diffusible performance of the appropriateness so obtained by the continuous print variable density formed by the recess absorbent portion 34 of density regions 39 in above-mentioned effect and the outstanding absorbent portion 33 of high-density region 38, can improve the dry feeling of positive dough sheet 21 further.In addition, the above-mentioned continuous print variable density only formation around high-density region 38 of absorber 3, therefore, it is possible to do not show excessive diffusibility and can suppress leakage.

The material of positive dough sheet 21 and preferred manufacture method thereof is described following.

Positive dough sheet 21, such as, comprises the upper strata 11 be made up of non-thermal contraction fibrous material or the heat shrink temperature fiber higher than the fiber of lower floor, the lower floor 12 be made up of the perisystolic heat-shrinkable fibrous material that heat shrink temperature is higher than top fiber.

Make this upper strata 11 and lower floor 12 by the embossing of heat etc. with the post-heating of the pattern part of regulation or welding by entire surface, make lower floor 12 thermal contraction in the horizontal direction.Like this, due to upper strata 11, the embossed integration of lower floor 12, therefore, if lower floor 12 shrinks, then because upper strata 11 is integrated with lower floor 12 by embossing, also and then shrink.But thermal contraction does not occur on upper strata 11 or hot contraction ratio lower floor 12 is little, therefore, deform, this distortion presents convex protuberance on upper strata 11.Meanwhile, in lower floor 12 side also due to the displacement transfer on upper strata 11, also present convex protuberance in lower floor 12.Describe in detail, then by thermal welding that heat embossing produces, such as, upper strata 11 and lower floor 12 side pressure of the laminated body of the embossing face (side faces etc. of knurling rolls) arranged with predetermined pattern by multiple embossing pin with regulation shape and upper strata 11, lower floor 12 connect, and make undertaken by the formation fibers melt of the upper strata 11 at the position of each pin hot pressing, lower floor 12.By the teat 14 that upper strata 11 and lower floor 12 are formed, also the part of stretching out can be had in the mode covering embossed portion.

The thermal contraction of lower floor 12, such as, lower floor 12 is made up of heat-shrinkable fiber or contains heat-shrinkable fiber in lower floor 12, while making upper strata 11 and lower floor 12 thermal welding or after making the two thermal welding, by carrying out heat treated to carry out to middle level 12.Like this, by making lower floor 12 thermal contraction in the horizontal direction, the protuberance formative of the teat formed on upper strata 11 and lower floor 12 is high, can obtain the positive dough sheet 21 that more bulk skin contact is good.When the fibrous layer of such lamination bilayer forms positive dough sheet 21, good from the view point of the liquid permeability of the thickness direction to positive dough sheet 21, preferably between the fibrous layer of this bilayer, do not form interface.

As upper strata 11 and lower floor 12, such as, preferably use by comb and parallel cotton fibers prior to spinning method (カ ー De method) net that formed or bulk (bulky) non-woven fabrics.The net formed by comb and parallel cotton fibers prior to spinning method refer to non-woven fabrics before the fiber assembly of state.That is, be in do not implement to apply the comb and parallel cotton fibers prior to spinning net (card web) that uses when manufacturing non-woven fabrics post processing, such as utilize hot blast method or rolling process to implement the state of heat welded process, the fiber assembly of the fiber extremely loosely state of tangle up each other.When using as upper strata 11 and lower floor 12 net formed by comb and parallel cotton fibers prior to spinning method, while making upper strata 11 and lower floor 12 engage or after engaging, make the fiber thermally welding in upper strata 11 and lower floor 12.In addition, as bulk non-woven fabrics, hot-wind nonwoven cloth, air-laid nonwoven fabrics (air laid non-woven fabric), resin bonding non-woven fabrics etc. can be enumerated, the formation fiber on upper strata 11 does not preferably have in fact the fiber of heat-shrinkable, or below the heat shrink temperature of the formation fiber of lower floor 12, do not carry out the fiber of thermal contraction.The grammes per square metre on upper strata 11, from the view point of forming the viewpoint of sufficient density gradient and making the skin contact sense of positive dough sheet 21 good, is preferably 10 ~ 50g/m ², be more preferably 15 ~ 40g/m ².

As lower floor 12, the net that formed by comb and parallel cotton fibers prior to spinning method can be used or there is inotropic non-woven fabrics.As the formation fiber of lower floor 12, suitably can use containing thermoplastic, polymeric materials and there is the fiber of heat-shrinkable.As the example of such fiber, potential crimp property fiber can be enumerated.Potential crimp property fiber in lower floor 12 containing proportional be preferably 40 ~ 100 % by weight.Potential crimp property fiber has to process in the same manner as existing non-woven fabrics fiber before heating, and the fiber of the character of shrinking by presenting spiral helicine crispaturaing with set point of temperature heating.

Potential crimp property fiber, such as, the composite fibre of the eccentric core-sheath-type being composition by two kinds of thermoplastic, polymeric materials different with contractility or side by side (side-by-side) type is formed.As its example, the fiber recorded in Japanese Unexamined Patent Publication 9-296325 publication or Japan Patent No. 2759331 publication can be enumerated.Middle level 12 such as containing such potential crimp property fiber, while the thermal welding of upper strata 11 and lower floor 12 or afterwards, can by the crispaturaing of this fiber of heating performance, shrink.The grammes per square metre in middle level 12, is preferably 10 ~ 50g/m ², be more preferably 15 ~ 40g/m ².

The positive dough sheet 21 be made up of these upper stratas 11 and lower floor 12, its grammes per square metre is preferably 20 ~ 100g/m ², be more preferably 35 ~ 80g/m ².Be formed with multiple jog at positive dough sheet 21, therefore, the thickness of this sheet material 1 is large, forms bulk sheet material.

Positive dough sheet 21 is not subject to the restriction of aforesaid way, as long as just can suitably change in the scope not exceeding aim of the present invention.Such as, positive dough sheet 21 can be made up of the fibre sheet material of three-decker.Now, the fiber expecting to have heat-shrinkable forms middle level 13, forms upper strata 11 and lower floor 12 by the fiber without heat-shrinkable.In addition, from the view point of raising liquid permeability, expect that the grammes per square metre on upper strata 11 is greater than the grammes per square metre of lower floor 12.

[the 3rd embodiment]

Then, the other embodiment (the 3rd embodiment) of the sanitary napkin of the second embodiment as absorbent commodity of the present invention is described.The sanitary napkin of the 3rd embodiment uses positive dough sheet 21 and the absorber 3 of the second embodiment, and the grammes per square metre of the region A of outstanding absorbent portion 38 is higher than the grammes per square metre of the region B of recess absorbent portion 34 and recess 31.

In addition, above-mentioned first and second embodiments and the 3rd embodiment are not independent and exclusive relations, and such as, above-mentioned 3rd embodiment also can be included as the subordinate concept of above-mentioned first and second embodiments.In addition, invention and the invention of the 3rd embodiment of the first and second embodiments form single inventive concept based on identical or corresponding specified features, has relevant technical relation.Identical symbol is used to identical parts etc., sometimes omits the description (wherein, size and detailed position relationship are according to the accompanying drawing corresponding with each embodiment).

Fig. 9 is the axonometric chart cutting a part of the sanitary napkin represented from direction, skin contact face as the 3rd embodiment.Figure 10 is the II-II line section shown in Fig. 9.Figure 11 is the top view schematically showing the absorber of the sanitary napkin shown in Fig. 9 from side, non-skin contact face, in order to avoid the multifarious parts do not represented beyond absorber of drawing.Wherein, in these figure, in order to avoid numerous and diverse, omit the core covering piece representing absorber.A part for the regulation section of the sanitary napkin shown in Fig. 9 is amplified the fragmentary cross-sectional view represented by Figure 12.

In the sanitary napkin 30 of present embodiment, the side, skin contact face of sheet 2 is engaged by bonding agent etc. and is equipped with absorber 3 overleaf.In addition, the foreign side of the long side direction left and right sides of the above-mentioned absorber 3 in the side, skin contact face of this back sheet 2, side sheet 4 is engaged in back sheet 2.In the part that this back sheet and side sheet abut, positive dough sheet 21 is clamped by back sheet 2 and side sheet 4, and in addition, positive dough sheet 21 side in its width (X-direction) more configures by the mode of side, skin contact face than absorber 3 to be positioned at.Like this, above-mentioned each chip part of lamination does not pass through the joints such as heat-sealing across absorber 3 ground in the foreign side of absorber 3, forms the edge, periphery 6 of sanitary towel 30.This edge, periphery 6 does not hinder overall retractility, and the degree do not revealed with the liquid temporarily absorbed is engaged.Form the pocket (not shown) of circumference 6 toward the outside at the free end 41 of side sheet 4, there is the effect of the dew such as the side that prevents liquid.In addition, in the width left and right sides portion of the sanitary napkin 30 of present embodiment, the alar part 42 with side sheet 4 extends outside the width of sanitary napkin 30, by sanitary napkin 30 is fixed on medicated underpants by lower for this part volume non-side, skin contact face to the crotch bottom of medicated underpants.

In the side, skin contact face of sanitary napkin 30, apply to compress the leakage-proof socket 5 obtained from the skin contact face side direction absorber 3 of positive dough sheet 21.The plan view shape of leakage-proof socket 5 is, at longitudinal middle body of absorber 3, the compression section longitudinally with length is configured in the width left and right sides of the excretory portion corresponding regions such as menses, the center direction of each compression section in this left and right along with the front and back end close to absorber 3 gradually to absorber 3 bends, and in front end, rear end is consistent.That is, leakage-proof socket 5 is extend at fore-and-aft direction at two compression sections of its side, skin contact face configuration in the both sides of the long side direction of sanitary napkin 30 and be the shape (with reference to Fig. 9) of endless loops continuously when overlooking and seeing.By such process, the side dew of discharged liquid when can effectively prevent wear sanitary napkins from using.In addition, excretory portion corresponding region refers to the part and neighbouring part thereof that directly receive the excretion such as menses or leucorrhea.In addition, the plan view shape of the leakage-proof socket 5 of present embodiment is not limited to above-mentioned shape, mutually can intersect, preferably suitably determine according to purposes for the front end of endless loops, rear end.

Detailed content about the material of positive dough sheet 21, back sheet 2, side sheet 4 and absorber 3 and size etc. carries out describing later.In present embodiment, absorb rapidly by the liquid drained from the view point of positive dough sheet 21 and be sent to the viewpoint of absorber and the comfortableness of skin contact, being preferably used in the non-woven fabrics that side, skin contact face and side, non-skin contact face have the liquid permeability of the protuberance based on fiber.In addition, as back sheet 2, use the poisture-penetrability film with breathability with monolayer.As absorber 3, it is the material that core covering piece (not shown) coated paper pulp fibers such as paper using etc. obtain with water absorbent polymer.In addition, the side, non-skin contact face of sheet 2, is coated with the bonding agent (not shown) sanitary napkin 30 being fixed on medicated clothing overleaf.By this bonding agent, sanitary napkin 30 is bonded and fixed to the medicated clothing of user.The sanitary napkin 30 of present embodiment, makes its positive dough sheet side towards the side, skin contact face of wearer and makes it longitudinally configure to buttocks from hypogastric region, and its width is dressed towards the direction configuration of the line connecting left and right lower limb.

In the present invention, unless otherwise specified, the face of the side with human contact is called skin side or skin contact face or front, the face with its opposition side is called non-skin face or non-skin contact face or the back side.In these two faces, the side near skin side or its extending direction are called side, skin face, side, skin contact face or face side, the side near non-skin face or its extending direction are called side, non-skin face, non-side, skin contact face or rear side.The direction be positioned on front side of human body during wearing is called front, using its end as leading section, the direction being positioned at rear side is called rear, using its end as rearward end, is described.The front of absorbent commodity or the normal direction at the back side are called thickness direction, are measured and be called thickness.In addition, by when overlooking absorbent commodity from veutro portion throughout crotch bottom until the direction of drosal part is called longitudinal direction, the direction orthogonal with this longitudinal direction is called width.In addition, above-mentioned longitudinal direction is consistent with the fore-and-aft direction of human body in typical wearing state.

The positive dough sheet 21 of present embodiment as shown in Figure 10, is formed from the both sides fibrous layer of lamination upper strata, side, skin contact face 11, lower floor 12.

Upper strata 11, lower floor 12 are engaged by utilizing the crimping of embossing multiple embossed portion 15.Upper strata 11 is implemented embossing when overlooking in identical position with lower floor 12, caves in and form multiple valley in embossed portion 15.Like this, the region that the non-embossed portion between valley, i.e. embossed portion 15 surround, forms teat 14.The teat 14a on upper strata 11 is outstanding to side, skin contact face, and the teat 14b of lower floor 12 is outstanding to side, non-skin contact face.This teat 14a and 14b is configured with multiple when overlooking regularly in the same position of upper strata 11 and lower floor 12 in the same manner as above-mentioned embossed portion 15, thus, in upper strata 11 and lower floor 12, is formed with multiple jog throughout whole region.Like this, overall as positive dough sheet 21, be formed with multiple jog throughout its whole region.

Form the embossed portion 15 of the valley of upper strata 11 and lower floor 12, the fiber being positive dough sheet 21 is by the part of densification, and compared with the teat 14 of positive dough sheet 21, fibre density is high, and capillary force is high.Thereby, it is possible to effectively make discharged liquid from positive dough sheet 21 to absorber 3 promptly through.Specifically, the unit that the paragraphs of Japanese Unexamined Patent Publication 2004-166849 publication [0007] ~ [0045] is recorded can be used.

In present embodiment, the roughly cross shape that each embossed portion 15 is intersected for making two major axis.Be positioned at adjacent two embossed portion 15,15 of beeline, configure in the mode be present on the roughly extended line of its long axis direction.Thus, at positive dough sheet 21, formed between embossed portion 15 and teat 14 towards multiple directions and form the density gradient of fiber, the diffusion of the liquid of positive dough sheet 21 and improving to the permeability of the liquid of thickness direction.The shape of this embossed portion 15 and configuration, except the shape of present embodiment with except being configured to, also can be circular or square embossing is at random scattered, at random can adopt the density gradient that has and form fiber and can realize liquid diffusion and to thickness direction rapid through shape and configuration.

The absorber 3 of present embodiment is the material obtained with the fine thing of mixed product of the coated paper pulp fiber of core covering piece and water absorbent polymer.Absorber 3 at least arranges multiple recess 31 caved in a thickness direction from its side, side direction skin contact face, non-skin contact face in the region corresponding with excretory portion.On the longitudinal direction that this recess 31 is configured in absorber 3 respectively and width.When the configuration of this longitudinal direction and width refers to and overlooks absorber 3, multiple recess 31 is configured at predetermined intervals, in the row permutation configuration at predetermined intervals in the direction of the width of the recess of longitudinal extension, in the row permutation configuration at predetermined intervals in the vertical of the recess that width extends.In addition, the row of recess 31 can be continuous print also can be interrupted.The recess absorbent portion 34 containing paper pulp fiber is configured with in the bottom of the side, skin contact face of this recess 31.This configures the through-liquid structure that the recess 31 of many and the recess absorbent portion 34 corresponding with it are connected to form absorber 3 in a thickness direction in length and breadth.In the part of the absorber 3 that this recess 31 clips each other, be divided the outstanding absorbent portion 33 of multiple bulks of giving prominence to as dough sheet 2 side of supporting or opposing.Outstanding absorbent portion 33, containing paper pulp fiber and water absorbent polymer, absorbs and keeps discharged liquid.In present embodiment, the shape of each outstanding absorbent portion 33 is the roughly rectangular shape at long side direction with length.Being configured to of outstanding absorbent portion 33, from the top view viewed from the side, non-skin contact face of absorber 3, mutually to have gap s, r(of regulation with reference to Figure 11 in naturalness) mode in direction permutation configuration in length and breadth.This configuration is by multiple outstanding absorbent portion 33 when long side direction or width project, in the configuration that its projection image of either direction is all overlapping.By the above-mentioned through-liquid structure with recess 31, can, in the non-skin contact face of position, the i.e. absorber 3 more farther than positive dough sheet 21, the liquid such as menses be made to move to each outstanding absorbent portion 33 and promptly absorb maintenance.

As mentioned above, in the side, skin face of recess 31, as a part for absorber 3, the recess absorbent portion 34 that thickness is less than outstanding absorbent portion 33 is configured with.Recess absorbent portion 34 is connected at in-plane with part (top) 33a of the side, skin contact face of outstanding absorbent portion 33, forms the continuous portion 35 of the side, skin contact face of absorber 3.Continuous portion 35 is smooth shape relative to positive dough sheet 21.Absorber 3 entirety comprising this recess absorbent portion 34 and outstanding absorbent portion 33 is formed does not have jointed integrative-structure.Particularly in excretory portion corresponding region, except the compression section of leakage-proof socket 5, density is in fact roughly even as a whole.This in fact density roughly evenly refer to not have and to utilize when the molding of absorber 3 embossing to carry out compressing and wait and part that density uprises terrifically, mean the situation of the variable density slightly that the bias voltage (biasing) of parts when allowing the fine change of the density manufactured or sold by the goods of indivedual packing and foldings etc. causes.In addition, with region A(Figure 10 of the absorber 3 of the outstanding absorbent portion 33 of configuration) compared with, region B(Figure 10 of the absorber of configuration recess 31 and recess absorbent portion 34) grammes per square metre little.

The absorber 3 of present embodiment is smooth shape by having the side, skin contact face of the absorber 3 in continuous portion 35, and positive dough sheet 21 is good with contacting of absorber 3, and the liquid that have passed positive dough sheet 21 is easily imported on a large scale in absorber 3.Block outstanding absorbent portion 33 and recess absorber 34 are as described later, the top 33a of recess absorbent portion 34 and block outstanding absorbent portion 33 is linked to be planar in side, skin contact face and is formed, at the interface zone of recess absorbent portion 34 with block absorbent portion 33, there is not visible extreme density contrast in existing compression groove etc., but roughly uniform density, be made up of roughly the same materials such as paper pulp fibers, be planar when overlooking from side, skin contact face, time visual, can't see border.

Like this, in above-mentioned through-liquid structure, do not improve at recess absorbent portion 34 Midst density, thickness is thin and grammes per square metre is low, and therefore, the logical liquid resistance of liquid is low.Thus, recess absorbent portion 34 forms the drain path suppressing liquid maintenance dose, can promptly be introduced to absorber 3 inside by the liquid from front sheet 21.Have passed the liquid of recess absorbent portion 34, on the one hand, not having easily to move to the top 33a of outstanding absorbent portion 33 in the roughly uniform portion 35 continuously of the density of borderline region, promptly taken in by multiple outstanding absorbent portion 33, move in a thickness direction, be maintained.On the other hand, be present in the liquid of recess absorbent portion 34, be temporarily ingested as the recess 31 of spatial portion.The liquid of recess 31 of being ingested is absorbed is held in the adjacent bottom portions of outstanding absorbent portion 33.Certainly, from the part in the continuous portion 35 of the part 33a(of outstanding absorbent portion 33) also can directly absorb maintenance liquid.But in the disposable a large amount of excretion of the liquid of the high viscosities such as menses or when repeating excretion, even if disposablely can not absorb maintenance by outstanding absorbent portion 33, introduced rapidly by recess absorbent portion 34, recess 31 plays the pooling feature temporarily keeping liquid.Further, as mentioned above, be connected with recess 31 by the side, non-skin contact face at absorber 3, liquid can be moved in the position more farther than positive dough sheet 21, reliably absorb maintenance by each outstanding absorbent portion 33.Like this, by the through-liquid structure formed by recess absorbent portion 34 and recess 31, liquid is promptly introduced into the inside of absorber 3 from positive dough sheet 21 side, reliably can absorb and remain in outstanding absorbent portion 33.Thus, the residual liquid of the side, skin contact face at absorber 3 can be suppressed, and not easily produce and return liquid from absorber 3 inside to positive dough sheet 21.

In addition, by the through-liquid structure formed by recess absorbent portion 34 and recess 31, even if apply the pressure of thickness direction in the wearing of sanitary towel 30, the discharged liquid such as menses not easily return liquid to positive dough sheet 21 side.This can think the effect produced by following multiple effect: recess absorbent portion 34 does not keep liquid, and liquid is promptly introduced recess 31; The liquid of temporary transient introducing recess 31 moves to the position relatively far away than the side, skin contact face of absorber 3; By having the through-liquid structure of recess 31, making liquid movement rapidly in the side, non-skin contact face of absorber 3, absorbing and being held in outstanding absorbent portion 33, therefore, the storage of no more than recess 31 self.In addition, by the existence of recess absorbent portion 34, the pressure putting on recess 31 is relaxed, and by this pressure, the movement of the liquid in the through-liquid structure with recess 31 is promoted, and this also can think one of essential factor.By the positive dough sheet 21 side not residual liquid like this at absorber 3, be promptly incorporated into recess 31, even if be subject to the pressure of thickness direction, liquid also effectively can be suppressed to return liquid to positive dough sheet 21 side, obtain good dry feeling.In addition, the side, non-skin face of absorber 3 is the concavo-convex character divided by recess 31 in length and breadth, therefore, this part has pliability, sanitary napkin 30 fit skin face fluctuating " health fit " and follow well wearer action, prevent extremely to improve with " row is followed in action " in the gap of the part of skin.

In the present invention, the configuration of outstanding absorbent portion 33, except being configured to of present embodiment, also can suitably arrange according to purposes and function selecting, such as, also can be the staggered arrangement configuration of roughly half pitch (the above-mentioned projection image stagger viewed from long side direction and/or width).In addition, the shape of outstanding absorbent portion 33, except the shape of present embodiment, also suitably can adopt arbitrary shape according to purposes and function.In addition, embossing can be given from the positive dough sheet side of above-mentioned absorber of the present invention, form general leakage-proof socket.

As the manufacture method of absorber 3, the absorber raw material that such as can use paper pulp fiber or comprise paper pulp fiber and high water absorbency polymer disperses in atmosphere, these raw materials is attracted to the mould 50(of multiple juts 51 with the side face being located at long-pending fine drum etc. with reference to Fig. 5) the accumulation portion long-pending fine machine that makes it pile up or the fine machine of mixed product etc. carry out manufacturing (not shown).

Such as, as shown in Figure 5, separated by the jut 51 of Fig. 5 (a), the mixture of bulk paper pulp fibres 61 and high water absorbency polymer 62, when piling up gradually, then as shown in Fig. 5 (b), pile up and exceed the height of jut 51, forming the absorber precursor 70 of Fig. 5 (c).The part 74 that jut 51 is piled up forms the recess absorbent portion 34 of absorber 3, and the part 71 that there is jut 51 forms the recess 31 of absorber 3.The part 73 that accumulation recess between above-mentioned projection is piled up forms the projection absorbent portion 33 of absorber 3.Like this, long-pendingly finely the part 75 higher than jut 51 the continuous portion 35 of absorber 3 must be formed.Using coated for slim for the mixed product of the paper pulp fiber and absorbable polymer that the operate formation like this core covering piece (not shown) with being made up of paper or various non-woven fabrics etc. such as thin papers and as absorber 3.

The recess absorbent portion 34 of integrated like this absorber 3 and outstanding absorbent portion 33 do not apply compression and wait and formed, and thus, fibre density does not improve, and has density roughly uniformly as absorber 3.In addition, recess absorbent portion 34 due to its thickness thin, therefore grammes per square metre is lower than outstanding absorbent portion 33.Formed different from the compression by embossing etc., the logical liquid resistance of recess absorbent portion 34 is lower, easily makes liquid become rapid to the movement of thickness direction.In addition, the absorber 3 be integrally formed like this is not by the hard part that the compressions such as embossing are formed, and therefore, skin contact sense is good.Dress when there is the sanitary towel 30 of this absorber 3, hard part but experience the soft feeling of absorber 3 can not be felt by positive dough sheet 21.Further, in the part of recess 31, there is pliability, therefore, good wearing feeling can be obtained with body fit.

In order to such recess absorbent portion 34 suppresses the maintenance dose of liquid, liquid is promptly moved to recess 31, make recess 31 have the interim storage function of discharged liquid, make liquid not return liquid to positive dough sheet 21 side, the degree of depth (h of preferred recess 31 ₂) relative to the thickness thickness of absorber 31 (the outstanding) (h of absorber 3 ₁) ratio (%) (with reference to Figure 10) be 40 ~ 98%, be particularly preferably 30 ~ 70%, be more preferably 40 ~ 60%.By being formed as more than above-mentioned lower limit, can more effectively suppress to positive dough sheet residual liquid and return liquid, by being formed as below the upper limit, the liquid received by positive dough sheet can be made only broadly to move to outstanding absorbent portion 33.For the same reason, the region B(with recess absorbent portion 34 and recess 31 is with reference to Figure 10) constituent material grammes per square metre (w ₁) be preferably 30 ~ 160g/m ², more preferably 50 ~ 150g/m ².The region A(with outstanding absorbent portion 33 is with reference to Figure 10) grammes per square metre (w ₂) be preferably 180 ~ 400g/m ², be more preferably 200 ~ 300g/m ².In addition, both grammes per square metre ratio (w ₁/ w ₂) be preferably 0.1 ~ 0.8, be more preferably 0.3 ~ 0.6.

In the present invention, recess 31 caves in and interstitial part from the bottom of absorber 3 to side, skin contact face.Recess absorbent portion 34 is parts of the absorber 3 on the top being positioned at this recess 31, is the part (with reference to Figure 12) of the absorber 3 that imaginary line s, the s extended at thickness direction by 31a, 31a bottom wall divides.Outstanding absorbent portion 33 is adjacent with the region B of the recess 31 arranged in a thickness direction and recess absorbent portion 34, the part (with reference to Figure 10 and Figure 12) of the region A of top to the bottom of the absorber surrounded by region B.

Thickness (the h of the recess absorbent portion 34 of such definition ₃) and the thickness (h of outstanding absorbent portion 33 ₁) be determined as follows and carry out: be 37mm × 37mm by size, the acrylate plate of thickness 3mm be placed on absorber core 10, use KEYENCE Inc. non-contacting Laser Displacement meter (LaserHead LK-G30, displacement meter LK-GD500), measure the thickness (h comprising the outstanding absorbent portion 33 of top 33a ₁), use KEYENCE Inc. microscope VHX-1000 to measure the section being equivalent to Figure 10 of absorber, measure the thickness (h of recess absorbent portion 34 ₃).

In addition, the grammes per square metre (w of recess absorbent portion 34 ₁) and the grammes per square metre (w of outstanding absorbent portion 33 ₂) assay method be: pressing FEATHER Inc. razor (FEATHER Razor S, single-blade), cut out the recess absorbent portion 34 of recess, carry out weight measurement, divided by cutting out the area of part to calculate grammes per square metre, similarly, cut out the outstanding absorbent portion 33 comprising top 33a, carry out weight measurement, divided by cutting out the area of part to calculate grammes per square metre.

In the present embodiment, the high water absorbency polymer of absorber 3 inside exists equably, but, liquid is returned in order to effectively suppress further, this water absorbent polymer preferably more bias be configured in the part than the outstanding absorbent portion 33 more on the lower of the continuous portion 35 containing recess absorbent portion 34, be not more preferably configured in continuous portion 35 containing recess absorbent portion 34 but in outstanding absorbent portion 33 more bias be configured in its side, non-skin face.In addition, the preferred side, non-skin face at recess 31 also configures water absorbent polymer from the same viewpoint.

In addition, in the absorber 3 of present embodiment, preferably until the part of foreign side of width of leakage-proof socket 5 arranges have the through-liquid structure of recess 31.By this configuration, reduce the goods flexural rigidity being axle with the width of goods, make it be easy to coupling to be out of shape from crotch to the body curvature of the wearer of buttocks, and, pliability is also given in absorber 3 both sides of revealing easily causing side, under it can be made to be suitable for the crotch of wearer, the action can following the health of wearer prevents gap.

Here, the absorber 3 of above-mentioned division of the sanitary napkin 30 of present embodiment and the feature of the dynamic action of positive dough sheet 21 is described in detail based on Figure 12.A part for the regulation section of the sanitary napkin shown in Fig. 9 is amplified the fragmentary cross-sectional view represented by Figure 12.In addition, multifarious in order to avoid figure, do not represent back sheet 2 and side sheet 4, the shape aligning dough sheet 21 schematically shows, is not necessarily the shape identical with illustrated shape in enforcement of the present invention.

The positive dough sheet 21 of present embodiment is as described above by the capillary force utilizing density gradient, and the liquid mobility to thickness direction of the liquid drained is high, can make to be rapidly to absorber 3 from the liquid of body excretes and move.In addition, formed (with reference to Figure 12) in same position in a thickness direction by the teat 14a on upper strata 11 and the teat 14b of lower floor 12, easily make liquid with concentrating on a position mobile in plane, even a small amount of liquid measure also imports to absorber 3, effectively to absorber 3 side through, so preferably.Particularly, upper strata 11 is different with fibre density in lower floor 12, and when the fibre density height of lower floor, liquid is easily stranded in the lower layer side of positive dough sheet, by forming the structure that liquid is concentrated, has by the shielding of positive dough sheet, the low effect returning fluidity raising dry feeling.Absorber 3 is described above, has multiple recess 31, be configured with recess absorbent portion 34 in its skin contact face in side, non-skin contact face.The logical liquid resistance of recess absorbent portion 34 lower than the logical liquid resistance of other absorber part, using this part as chamber, by the liquid a drained ₁thickness direction promptly to absorber 3 is absorbed.Then, at the liquid of the thickness direction movement of absorber 3, wherein a part forms the mobile liquid a of peritropous outstanding absorbent portion 33,33 ₂, another part becomes the storage solution a be ingested in recess 31 ₃.Like this, by from positive dough sheet 21 through liquid introduced, to a by recess absorbent portion 34 ₂and a ₃dispersion, reduces at the maintenance dose of the face side of absorber, and logical liquid resistance reduces further.Thus, also can effectively suppress to return liquid to positive dough sheet 21.

Like this, the sanitary napkin 30 of this embodiment can play the performance of the positive dough sheet 21 of the liquid high-permeability had to thickness direction fully by the high liquid permeability to thickness direction with the absorber 3 of recess 31, thus, what realize suppressing the moisture that is ingested to skin returns liquid, gives good dry feeling to user.

The outstanding absorbent portion 33 of present embodiment and the size and shape of recess 31 are not particularly limited, slightly different according to the purposes of the absorbent commodity used, the long side direction length k of outstanding absorbent portion 33 ₁(with reference to Figure 11), gradually bend to skin contact face from promotion at standard shaft absorber, the viewpoint that the shape along the health of wearer makes recess be out of shape is set out, and is preferably 10 ~ 30mm, is more preferably 15 ~ 25mm.Its width length k ₂, from the view point of relaxing the compression stress from width applied absorber at wearing center dant, being preferably 5 ~ 20mm, being more preferably 7 ~ 15mm.In addition, the long side direction length s of recess 31 is preferably 1 ~ 5mm, is more preferably 1 ~ 3mm.Width length r is preferably 1 ~ 5mm, is more preferably 1 ~ 3mm.

The material of positive dough sheet 21 and preferred manufacture method thereof is described following.

Positive dough sheet 21, such as, comprise the upper strata 11 be made up of non-thermal contraction fibrous material or the heat shrink temperature fiber higher than the fiber of lower floor, the lower floor 12 be made up of the perisystolic heat-shrinkable fibrous material that heat shrink temperature is higher than top fiber.

This upper strata 11 and lower floor 12 are heated after welding with the pattern part of regulation ground or by entire surface by the embossing of heat etc., makes lower floor 12 thermal contraction in the horizontal direction.Like this, due to upper strata 11, the embossed integration of lower floor 12, therefore, if lower floor 12 shrinks, upper strata 11, due to integrated with lower floor 12 by embossing, is also and then shunk.But thermal contraction does not occur on upper strata 11 or hot contraction ratio lower floor 12 is little, therefore, deform, this distortion presents convex protuberance on upper strata 11.Meanwhile, in lower floor 12 side also due to the displacement transfer on upper strata 11, also present convex protuberance in lower floor 12.Describe in detail, based on the thermal welding of heat embossing, such as, upper strata 11 and lower floor 12 side pressure of the laminated body of the embossing face (side faces etc. of knurling rolls) arranged with predetermined pattern by multiple embossing pin with regulation shape and upper strata 11, lower floor 12 connect, and make undertaken by the formation fibers melt of the upper strata 11 in the position of each pin hot pressing, lower floor 12.By the teat 14 that upper strata 11 and lower floor 12 are formed, also outstanding part can be had in the mode covering embossed portion.

The thermal contraction of lower floor 12, such as, lower floor 12 is made up of heat-shrinkable fiber or contains heat-shrinkable fiber in lower floor 12, while making upper strata 11 and lower floor 12 thermal welding or after making the two thermal welding, by carrying out heat treated to carry out to middle level 12.Like this, by making lower floor 12 thermal contraction in the horizontal direction, the protuberance formative of the teat formed on upper strata 11 and lower floor 12 is high, can obtain the positive dough sheet 21 that more bulk skin contact is good.When the fibrous layer of such lamination bilayer forms positive dough sheet 21, good from the view point of the liquid permeability to thickness direction of positive dough sheet 21, preferably between the fibrous layer of this bilayer, do not form interface.

As upper strata 11 and lower floor 12, such as, the net formed by comb and parallel cotton fibers prior to spinning method or bulk non-woven fabrics is preferably used.The net formed by comb and parallel cotton fibers prior to spinning method refer to non-woven fabrics before the fiber assembly of state.That is, be in do not implement to use when manufacturing non-woven fabrics the post processing that comb and parallel cotton fibers prior to spinning net is applied, such as utilize hot blast method or rolling process to implement the state of heat welded process, the fiber assembly of the fiber extremely loosely state of tangle up each other.When using as upper strata 11 and lower floor 12 net formed by comb and parallel cotton fibers prior to spinning method, while making upper strata 11 and lower floor 12 engage or after engaging, make the fiber thermally welding in upper strata 11 and lower floor 12.In addition, as loose non-woven fabrics, can enumerate hot-wind nonwoven cloth, air-laid nonwoven fabrics, resin bonded non-woven cloth etc., the formation fiber on upper strata 11 does not preferably have in fact the fiber of heat-shrinkable or below the heat shrink temperature of the formation fiber of lower floor 12, does not carry out the fiber of thermal contraction.The grammes per square metre on upper strata 11, from the view point of forming the viewpoint of sufficient density gradient and making the skin contact sense of positive dough sheet 21 good, is preferably 10 ~ 50g/m ², be more preferably 15 ~ 40g/m ².

As lower floor 12, the net that formed by comb and parallel cotton fibers prior to spinning method can be used or there is inotropic non-woven fabrics.As the formation fiber of lower floor 12, suitably can use containing thermoplastic, polymeric materials and there is the fiber of heat-shrinkable.As the example of such fiber, potential crimp property fiber can be enumerated.Present crimp property fiber in lower floor 12 containing proportional be preferably 40 ~ 100 % by weight.Potential crimp property fiber has can to process equally with existing non-woven fabrics fiber before being heated, and the fiber of the character of shrinking by presenting spiral helicine crispaturaing with set point of temperature heating.

Potential crimp property fiber, such as, the composite fibre of the eccentric core-sheath-type being composition by two kinds of thermoplastic, polymeric materials different with shrinkage factor or side by side (side-by-side) type is formed.As its example, the fiber recorded in Japanese Unexamined Patent Publication 9-296325 publication or Japan Patent No. 2759331 publication can be enumerated.Middle level 12, such as containing such potential crimp property fiber, while the thermal welding of upper strata 11 and lower floor 12 or afterwards, can be presented the crispaturaing of this fiber, be made it shrink by heating.The grammes per square metre in middle level 12, is preferably 10 ~ 50g/m ², be more preferably 15 ~ 40g/m ².

The positive dough sheet 21 be made up of these upper stratas 11 and lower floor 12, its grammes per square metre is preferably 20 ~ 100g/m ², be more preferably 35 ~ 80g/m ².Be formed with multiple jog at positive dough sheet 21, therefore, the thickness of this sheet 1 is large, forms bulk sheet material.

Positive dough sheet 21 is not subject to the restriction of aforesaid way, as long as just can suitably change in the scope not exceeding aim of the present invention.Such as, positive dough sheet 21 can be made up of the fibre plate of three-decker.Now, the fiber expecting to have heat-shrinkable forms middle level 13, forms upper strata 11 and lower floor 12 by the fiber without heat-shrinkable.In addition, from the view point of raising liquid permeability, expect that the grammes per square metre on upper strata 11 is greater than the grammes per square metre of lower floor 12.

The formation raw material of the parts of the sanitary napkin 10,20 and 30 forming present embodiment is below described.

As the formation material of positive dough sheet 1, back sheet 2, absorber 3, side sheet 4, be not particularly limited, the material adopted in this kind of article can be used.Such as, as positive dough sheet 1, the composite sheet being formed with multiple perforate that the laminated body of the structure of the overlap of various non-woven fabrics (such as, hot-wind nonwoven cloth, spun-bonded non-woven fabrics etc.), non-woven fabrics and film is formed can be used.In addition, as positive dough sheet, also can by upper strata, middle level, three layers of lower floor form, the upper and lower formed the shape with protuberance and the fluctuating by the part of the densification of embossing, and engage with smooth middle level the sheet obtained.

The preferred hydrophobic non-woven fabrics of side sheet 4, can be used by hydrophobic article or the various non-woven fabrics after hydrophobic treatment in the non-woven fabrics obtained by comb and parallel cotton fibers prior to spinning method, spun-bonded non-woven fabrics, spray fusing non-woven fabrics, spun-laced nonwoven fabric, fabric hot rolled nonwoven fabrics, needle punched non-woven fabrics etc.Particularly preferably use such as spun-bonded non-woven fabrics, spunbond-melt blown (SM) non-woven fabrics, spunbond-melt blown-spunbond (SMS) non-woven fabrics etc.

As the constituent material of absorber 3, be not particularly limited, fibrous material, porous plastid, their combination etc. can be used.As fiber raw material, such as, the natural fibers such as wood pulp, cotton, fiber crops, the ultimate fibre be made up of synthetic resin such as polyester resin, polyvinyl alcohol resin such as the polyolefin resin such as polyethylene or polypropylene, polyethylene terephthalate, the semisynthetic fibre such as composite fibre, acetas, staple fibre containing these two or more resins can be used.When using by the fiber that synthetic fibers are formed, this fiber can be the heat-shrinkable fibre that shape changes because of heat.Such as, the fiber that can be fiber number fibre length shortens because thermal change is large, fiber number have almost no change but the fiber that shortens of the length of change of shape for web-like thus shared by apparent fiber because of heat.As porous plastid, the agglutinator (porous plastid that high water absorbency polymer and fiber coagulation obtain) etc. of sponge, non-woven fabrics, high water absorbency polymer can be used.

Back sheet 2 can use independent poisture-penetrability film, independent non-poisture-penetrability film or the laminating of film and non-woven fabrics, hydrophobic non-woven fabrics (SMS or SMMS etc.).From with the mating of Anti-dislocation binding agent, most preferably use independent poisture-penetrability film or non-poisture-penetrability film as leakproofing material.As poisture-penetrability membrane material, can enumerate and make thermoplastic resin and carry out melting mixing with its inorganic filler without the compatibility and extrude the film obtained being stretched as given size and the film producing minute aperture, or the compatibility of moisture is in essence high, can as soaked into the imporosity film of discharging steam film.In order to fully show performance that humidity that the present invention is correlated with discharges and realize not oozing out the application of anti-leakage layers of moisture, moisture permeability is preferably 0.7 ~ 3.0g/100cm ²the scope of hr, is more preferably the scope of 1.0 ~ 2.5.From the view point of fully improving dry feeling, most preferably be 1.5 ~ 2.5.In addition, in order in use can not have the problem of the breakage of film etc., film grammes per square metre is preferably 18 ~ 70g/m ², be more preferably 25 ~ 60g/m ².In addition, preferred inorganic filler use level, as the quality % of filler relative to the quality of film entirety, is preferably 30 ~ 65 quality %, is more preferably 40 ~ 60 quality %.

As mentioned above, absorbent commodity of the present invention is by having the absorber of said structure, liquid is absorbed by the recess absorbent portion of absorber and side, the skin contact face part of outstanding absorbent portion, in planar direction, diffusion is also introduced rapidly, and is absorbed the outstanding absorbent portion keeping (immobilization) in bulk.In the through-liquid structure configured in length and breadth of absorber, have recess absorbent portion in the side, skin contact face of recess (depression), the maintenance comparing liquid in recess absorbent portion thus more promotes that liquid moves, and liquid is easily promptly absorbed by multiple outstanding absorbent portion and keeps.In above-mentioned recess, the temporary transient maintenance of the liquid by recess absorbent portion can be carried out, suppress the liquid residue in positive dough sheet side.The liquid kept by recess is absorbed maintenance due to the side, non-skin contact face in outstanding absorbent portion, not easily returns liquid.By such through-liquid structure, the outstanding absorbent portion of the multiple bulks be distributed can be distinguished reliably absorption and keep liquid.In addition, in addition, as described in the second embodiment, make to transmit unobstructed carrying out to the liquid of absorber at the teat of the rear side of positive dough sheet, and, can prevent the liquid once moving to absorber from returning getting damp of skin side.That is, by the positive dough sheet of the well-regulated teat of tool and the combination of absorber with the through-liquid structure formed by recess and recess absorbent portion, reliably can realize the good liquid permeability to thickness direction, realize the reliable absorption maintenance to liquid.

In the present invention, the high-density region 38 of absorber and the structure of density regions 39, and the through-liquid structure formed by recess 31 and recess absorbent portion 34, be not limited to present embodiment such in longitudinal configured in one piece, also can only excretion corresponding region configuration.Absorbent commodity of the present invention, is not limited to above-mentioned embodiment, at various sanitary napkin, such as, can apply the present invention in Briefs for incontinence patients, incontinence protection etc.In addition, being not limited to menses, is also effective to urine, leucorrhea, soft stool etc.In addition, except positive dough sheet 1 and 21, absorber 3, back sheet 2 and side sheet 4, can also according to purposes and the suitable parts of function combinations.In addition, the material of the positive dough sheet 1 and 21 of the sanitary napkin of above-mentioned embodiment, absorber 3 and back sheet 2, the condition of manufacture method, the size etc. of goods are not particularly limited, and can be used in the various materials used in common sanitary napkin etc.

Embodiment

Below, based on embodiment, the present invention is described in more detail, but explanation of the invention is not limited by it.

[embodiment 1]

The accumulation portion of the jut arranged at equal intervals in length and breadth on the side face with the long-pending fibre drum being arranged at long-pending fine machine, attracts the mixture of bulk paper pulp fibres and high water absorbency polymer, the total paper pulp grammes per square metre 200g/m of the body that is absorbed ², the total high water absorbency polymer grammes per square metre 52g/m of absorber ²paper pulp fiber and long-pending slim (Fig. 5 (c)) (total paper pulp grammes per square metre, total high water absorbency polymer grammes per square metre be the grammes per square metre comprising jog entirety) of high water absorbency polymer.Amass slim, between a pair backer roll, with 3.0kgf/cm with coated this of core covering piece ²pressure compress, using the sample 1 of obtained absorber as embodiment 1.In this sample 1, as the average density (m of the outstanding absorbent portion 33 of high-density region 38 ₂) be 0.12g/cm ³, as the average density (m of the recess absorbent portion 34 of density regions 39 ₁) be 0.08g/cm ³.Average grammes per square metre (the w of high-density region 38 ₂) be 240g/m ², the average grammes per square metre (w of density regions 39 ₁) be 100g/m ².In addition, the thickness (h of recess absorbent portion 34 ₃) be 1.2mm, the thickness (h of outstanding absorbent portion 33 ₁) be 2.0mm.The longitudinal length k of outstanding absorbent portion 33 ₁for 20mm, width length k ₂for 10mm, the longitudinal length s of recess 31 is 2.0mm, and width length r is 1.0mm.

From commercially available sanitary napkin (trade name " ロ リ エ エ Off volume ight ~ common daily ") the removing absorber of Kao Corp, the sample 1 of above-mentioned absorber is configured in the position of removed absorber, other are restored, obtains the sanitary napkin evaluated.The positive dough sheet of above-mentioned commercially available sanitary napkin is formed by the following non-woven fabrics formed.

Non-woven fabrics: there is upper and lower fibrolaminar double-deck lamination non-woven fabrics, upper strata by 100% be core with polyethylene terephthalate, be that the sheath-core type conjugate fiber of sheath is formed with polyethylene, lower floor by 100% potential helical form crimp property fiber (NBF-L(V of Daiwa Textile Co., Ltd.) fiber, be core with polyethylene, take polypropylene as sheath, presented the composite fibre of spiral helicine core-sheath-type of crispaturaing by heating) form.The weight ratio (upper strata/lower floor) of levels is 50/50.Engaged by the embossed portion of the point-like configured with loose point-like between levels, the potential crimp property fiber of lower floor is in the state presenting contraction due to heat.

[comparative example 1]

The sanitary napkin of the above-mentioned commercially available sanitary napkin of Kao Corp as comparative example is used.In the absorber (sample 2) of this commercially available sanitary napkin, the embossed portion of the circle of diameter 2mm is formed as staggered throughout whole region.Spacing between the central point of embossed portion is 7mm.Grammes per square metre (weight per unit area) is 250g/m ².

In addition, as a reference example and comparative example 2 ~ 4, the sample 3 ~ 6 that use has an absorber of the section shown in Figure 13 (a) ~ (d) in above-mentioned commercially available sanitary napkin is evaluated.

[reference example]

In the accumulation portion of the jut arranged at equal intervals in length and breadth of side face with the long-pending fibre drum being arranged at long-pending fine machine, attract the mixture of bulk paper pulp fibres and high water absorbency polymer, obtain the grammes per square metre 240g/m of outstanding absorbent portion ², recess absorbent portion grammes per square metre 115g/m ²paper pulp fiber and long-pending slim (Figure 13 (a)) of water absorbent polymer.Using the absorber that obtains with core covering piece this accumulation body coated sample (sample 3) as embodiment 1.Use the absorber that paper pulp fiber and superabsorbent polymer are formed, jut uses 20mm(long side direction) × 10mm(width) the jut of size.

[comparative example 2]

Except making the degree of depth (h of the recess in the absorber of present embodiment ²) for 30% of absorbed thickness (outstanding absorbent portion thickness), the grammes per square metre of outstanding absorbent portion is 240g/m ², recess absorbent portion grammes per square metre be 160g/m ²in addition, comprise size and operate similarly to Example 1, be absorbed body, as the sample (sample 4) (with reference to Figure 13 (b)) of comparative example 1.

[comparative example 3]

Except not arranging recess at absorber, making the grammes per square metre of absorber entirety be 200g/m ²in addition, comprise size and operate similarly to Example 1, be absorbed body, as the sample (sample 5) (with reference to Figure 13 (c)) of comparative example 2.

[comparative example 4]

Compress from the non-skin contact face side embossing pin of the absorber of comparative example 2, form high compression portion 35 in its side, skin contact face.In addition, comprise size and operate similarly to Example 1, be absorbed body, as the sample (sample 6) (with reference to Figure 13 (d)) of comparative example 3

[performance evaluation]

<1>, for above-described embodiment, comparative example 1 ~ 4 and reference example, injects 3 3g blood from positive this sanitary napkin of dough sheet side direction with 3 minutes intervals, evaluates under the environment of 25 DEG C.Return liquid evaluation about top layer, implement when horse blood injection rate accumulative absorption 6g, the diffusion area of liquid is the area after absorbing 9g horse blood.In addition, the blood of horse is used as the blood injected to sanitary towel.More specifically, (strain) Japanese Biotest(バ イ オ テ ス ト is used) study made horse defiber blood.The viscosity of this horse defiber blood, (Type B) viscometer TVB-10M made with eastern machine industry (strain) carries out measuring (measuring temperature 25 DEG C, rotor L adapter), lower than 15mPaS.The horse blood used is identical horse blood in embodiment and comparative example.

<2> returns on top layer the assay method of liquid measure

Use the liquid injection plate of the perforate footpath 10mm of liquid injection unit, inject 3g horse blood.The paper having measured weight is placed in the surface of sanitary towel after injecting 1 minute from liquid, places the metallic plate of 125g further thereon, pressurize 5 seconds (pressure 4.5g/cm ²), measure the liquid measure that paper absorbs.Further mensuration is attached to the liquid measure of sanitary towel's contact surface of injection plate, and the aggregate value of the two is returned liquid measure as top layer when injecting 3g horse blood.After injecting three minutes from first time, re-inject 3g horse blood, repeat aforesaid operations in injection after 1 minute, return liquid measure as top layer during accumulative injection 6g horse blood.Re-inject 3g horse blood, repeat aforesaid operations in injection after 1 minute, return liquid measure as top layer during accumulative injection 9g horse blood.

The assay method of <3> liquid diffusion area

Use image analysis apparatus is determined at the liquid diffusion area that the top layer (positive dough sheet side) of the absorber of the sanitary towel's (after injecting 6g horse blood) provided when liquid is evaluated is returned on top layer, as liquid diffusion area.

Above-mentioned evaluation result is represented in following table 1.

[assay method]

By sanitary napkin horizontal positioned, the overlapping acrylate plate of cylinder of inlet with having diameter 1cm in bottom, injects 3g defiber horse blood (Japanese Biotest(strain) system from inlet), keep this state 1 minute after injecting.Then, the acrylate plate with cylinder is removed, the grammes per square metre 13g/m of overlapping mounting 16 vertical 6cm × horizontal 9.5cm on the surface of positive dough sheet ²absorption paper (commercially available thin paper).Loading counterweight more thereon makes pressure be 4.0 × 10 ²pa, pressurizes 5 seconds.After pressurization, take out absorption paper, measure the weight of the paper before and after pressurization, measure the weight of the defiber horse blood that paper absorbs, as surperficial residual liquid amount.

Above-mentioned evaluation result is represented in following table 1.

[table 1]

From the result shown in table 1, the absorber of embodiment, suppresses liquid diffusion area, returns liquid few, get damp (the wet back) to skin not easily occurs.

[flexibility]

By fixing on medicated underpants for the sanitary napkin of embodiment 1 and comparative example, be worn on the body model of women.Insert pressure transducer (" pressure sensor component " that PPS company (Pressure Profile System company) makes) at the pars inguinalis of body model, in the pressure detecting range of 25mm × 25mm, detect the maximum of the pressure obtained when the lower limb of the body model by women bends to the inside.

Result is, the sanitary napkin of embodiment 1 is 0.7kPa to the maximum pressure that model's pars inguinalis applies, and the sanitary napkin of comparative example is 1.4kPa to the maximum pressure that model's pars inguinalis applies.

Can judge from this result, compared with the sanitary napkin of comparative example, the sanitary napkin of embodiment 1 is when dressing, carry out closing the action of lower limb time low to the pars inguinalis applied pressure of wearer, reduce the discomfort that when dressing sanitary napkin, wearer is felt, more comfortable wearing feeling is provided.

[anti-twisted property]

The sanitary napkin of embodiment 1 and comparative example is fixed on medicated underpants, is worn on the dynamic model of human body.Observe the section in the width direction of the sanitary napkin made after dynamic model's walking movement 30 minutes, result, the absorber of the sanitary napkin of comparative example, section bends to M shape, relative to this, the absorber of the sanitary napkin of embodiment, the central part of width bends to roughly trapezoidal shape to be maintained more smooth state, the decline of the width central authorities almost not having comparative example such.

Can judge from this result, the sanitary napkin of embodiment 1 is compared with the sanitary napkin of comparative example, and anti-twisted property is high, the skin to wearer fit in also excellent.

Describe the present invention with embodiment, but, as long as no specifying, being all not used in restriction the present invention at any detail section illustrated, thinking and should to explain widely when not violating the invention spirit and scope shown in subsidiary entitlement requests scope.

The application is based on December in 2010 Patent 2010-282455 and 2010 on December 17, the Patent 2010-282456 CLAIM OF PRIORITY in Japan's proposition patent application in Japan's proposition patent application on the 17th, and the part of its content as the record of this description is quoted as reference by these.

Symbol description

Claims (25)

1. an absorbent commodity, it is elongate shape, the back sheet have the positive dough sheet of the liquid permeability being configured at side, skin contact face, being configured at side, non-skin contact face and the absorber be configured between two panels, and the feature of this absorbent commodity is:

Described absorber has longitudinally and the width orthogonal with this longitudinal direction, in the region corresponding with excretory portion, in the longitudinal direction of absorber and all directions of width, be configured with the through-liquid structure be made up of the recess absorbent portion containing paper pulp fiber of the bottom of the recess of the channel-shaped caved in a thickness direction from side, non-skin contact face and the side, skin contact face of this recess, in the region surrounded by this through-liquid structure, possesses outstanding to side, non-skin contact face and containing paper pulp fiber and the bulk higher than the grammes per square metre of described recess absorbent portion outstanding absorbent portion

The recess absorbent portion of described through-liquid structure is density regions, forms the drain path suppressing liquid maintenance dose,

The outstanding absorbent portion of described bulk is relatively high-density region, and this high-density region and described density regions are in a ratio of high grammes per square metre, reaches side, skin contact face from the side, non-skin contact face of absorber,

Described absorber, has sea-island structure that described high-density region is in the in-plane direction scattered by described density regions with surrounding, comprises the continuous portion with described sea-island structure in side, skin contact face.

2. absorbent commodity as claimed in claim 1, is characterized in that:

The average density of the component parts of described recess absorbent portion is 0.02 ~ 0.09g/cm ³, the average density of the component parts of described outstanding absorbent portion is 0.10 ~ 0.25g/cm ³.

3. absorbent commodity as claimed in claim 1 or 2, is characterized in that:

The degree of depth of the thickness direction of the described channel-shaped recess of described absorber is 40% ~ 98% of the thickness of the outstanding absorbent portion of described bulk.

4. absorbent commodity as claimed in claim 1 or 2, is characterized in that:

Described outstanding absorbent portion is the roughly rectangular shape in the vertical with length.

5. absorbent commodity as claimed in claim 4, is characterized in that:

Described outstanding absorbent portion, its longitudinal length is 5 ~ 40mm, and width length is 3 ~ 40mm.

6. absorbent commodity as claimed in claim 1 or 2, is characterized in that:

The longitudinal length of described recess is 1 ~ 5mm.

7. absorbent commodity as claimed in claim 1 or 2, is characterized in that:

The width length of described recess is 1 ~ 5mm.

8. absorbent commodity as claimed in claim 1 or 2, is characterized in that:

Described outstanding absorbent portion, when overlooking from the side, non-skin contact face of absorber, mutually to have the mode in the gap of regulation in its natural state in direction permutation configuration in length and breadth.

9. absorbent commodity as claimed in claim 1 or 2, is characterized in that:

The ratio of the average density of described recess absorbent portion and outstanding absorbent portion is less than 0.80.

10. absorbent commodity as claimed in claim 1 or 2, is characterized in that:

The average grammes per square metre of the component parts of described recess absorbent portion is 10 ~ 160g/m ².

11. absorbent commodities as claimed in claim 1 or 2, is characterized in that:

The average grammes per square metre of the component parts of described outstanding absorbent portion is 160 ~ 400g/m ².

12. absorbent commodities as claimed in claim 1 or 2, is characterized in that:

The average grammes per square metre ratio of described recess absorbent portion and described outstanding absorbent portion component parts is separately 0.01 ~ 0.90.

13. absorbent commodities as claimed in claim 1 or 2, is characterized in that:

The ratio of the thickness of the relatively described absorber of the degree of depth of described recess is 20 ~ 98%.

14. absorbent commodities as claimed in claim 1 or 2, is characterized in that:

Described absorber entirety is configured to not have jointed Construction integration.

15. absorbent commodities as claimed in claim 1 or 2, is characterized in that:

Described positive dough sheet has the teat of multiple part as giving prominence to regularly in side, skin contact face and side, non-skin contact face, and this teat is configured at the same position of side, skin contact face and side, non-skin contact face.

16. absorbent commodities as claimed in claim 1 or 2, is characterized in that:

Described recess absorbent portion is connected at in-plane with the part of the side, skin contact face of described outstanding absorbent portion and forms continuous portion, and this continuous portion is smooth shape relative to positive dough sheet.

17. absorbent commodities as claimed in claim 15, is characterized in that:

Described positive dough sheet is stacked and formed by 2 layers of fibrous layer of upper strata, lower floor, and these the upper and lower are engaged by the crimping based on embossing in multiple embossed portion.

18. absorbent commodities as claimed in claim 17, is characterized in that:

Caving in and form multiple valley in described the upper and lower in described embossed portion, is formed described teat by the non-embossed portion that this embossed portion multiple is surrounded.

19. absorbent commodities as claimed in claim 1 or 2, is characterized in that:

Described absorber contains water absorbent polymer, and this water absorbent polymer bias is configured in the side, non-skin contact face of described outstanding absorbent portion.

20. absorbent commodities as claimed in claim 19, is characterized in that:

Also high water absorbency polymer is configured with in described recess absorbent portion.

21. absorbent commodities as claimed in claim 1 or 2, is characterized in that:

Described absorber is the parts by obtaining with the fine thing of the mixed product of core covering piece covering paper pulp fibres and superabsorbent polymer.

22. absorbent commodities as claimed in claim 21, is characterized in that:

Described core covering piece is paper.

23. absorbent commodities as claimed in claim 1 or 2, is characterized in that:

In side, described skin contact face, be provided with the leakage-proof socket compressing and obtain from side, skin contact face to the absorber of positive dough sheet.

24. absorbent commodities as claimed in claim 23, is characterized in that:

Leakage-proof socket when overlooking is, two compression sections configured in side, skin contact face in described longitudinal both sides extend in the longitudinal direction and are the shape of endless loops continuously.

25. absorbent commodities as claimed in claim 1 or 2, is characterized in that:

Described absorbent commodity is sanitary napkin.