CN100387212C - Top of absorption article and absorption article - Google Patents

Top of absorption article and absorption article Download PDF

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Publication number
CN100387212C
CN100387212C CNB2004100798234A CN200410079823A CN100387212C CN 100387212 C CN100387212 C CN 100387212C CN B2004100798234 A CNB2004100798234 A CN B2004100798234A CN 200410079823 A CN200410079823 A CN 200410079823A CN 100387212 C CN100387212 C CN 100387212C
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CN
China
Prior art keywords
lower floor
compression section
surface patch
perforate
absorbent commodity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB2004100798234A
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Chinese (zh)
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CN1596858A (en
Inventor
箕轮浩树
村井淳
田中聪
长原进介
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kao Corp
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Kao Corp
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Filing date
Publication date
Priority claimed from JP2003328633A external-priority patent/JP4090411B2/en
Priority claimed from JP2003329720A external-priority patent/JP4090412B2/en
Application filed by Kao Corp filed Critical Kao Corp
Publication of CN1596858A publication Critical patent/CN1596858A/en
Application granted granted Critical
Publication of CN100387212C publication Critical patent/CN100387212C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51104—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A61F2013/51355—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability for improving fluid flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A61F2013/51383—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability being adapted for female properties

Abstract

A topsheet of an absorbent article having a laminated nonwoven fabric composed of an upper layer 21 disposed on the skin side and a lower layer 22 disposed on the absorbent member side. The nonwoven fabric has a large number of sheet compressed parts 23 formed by compression joining the upper layer 21 and the lower layer 22 and a large number of lower layer compressed parts 24 positioned between the sheet compressed parts 23 and formed by compressing the lower layer 22. The minimum density of a region 29 other than the sheet compressed parts 23 and the lower layer compressed parts 24 on the lower layer 22 is at least the minimum density of a region 28 other than the sheet compressed parts 23 on the upper layer 21.

Description

The surface patch of absorbent commodity and absorbent commodity
Technical field
The present invention relates to absorbent commodities such as sanitary napkin, sanitary pad, incontinence pad, disposable diaper and be applicable to the surface patch of its skin contact surface.
Background technology
For the surface patch of absorbent commodities such as sanitary napkin and disposable diaper, require slops such as menses and urine are successfully transferred in the absorber.
Surface patch as absorbent commodity, once upper strata that is disposed at the skin side and the non-woven fabrics tabulation dough sheet that is disposed at the lower floor that absorbs the side had been proposed to possess, the interfibrous space of formation by the interfibrous void ratio of the formation that makes lower floor upper strata is little, and the transitivity to lower floor improves (opening flat 7-178133 communique with reference to the spy) from the upper strata to make liquid.
But, the level of the desired leakageresistance of goods (absorbent commodity), absorbent properties etc. is improved every year, because the difference of above-mentioned surface patch can produce the situation that can not fully satisfy above-mentioned requirements.
In addition, also proposed to make the incorporate surface patch of thickness direction (opening flat 10-272152 communique) with reference to the spy by embossing processing (deboss pattern) is carried out with the lower floor that is disposed at the absorption side in the upper strata that is disposed at the skin side.But,, can not satisfy various requirement in recent years even adopt this surface patch.
Summary of the invention
The invention provides a kind of surface patch (being also referred to as top flat) of absorbent commodity, the surface patch of this absorbent commodity constitutes by having the upper strata that is disposed at the skin side and stacked (the being also referred to as lamination) non-woven fabrics that is disposed at the lower floor that absorbs the side, and have a plurality of compression sections that the upper and lower boil down to one is formed, and the lower floor's compression section that between above-mentioned compression section, also only forms by the compression of above-mentioned lower floor, the minimum density of the part in the above-mentioned lower floor beyond above-mentioned compression section and the above-mentioned lower floor compression section be at least in the above-mentioned upper strata part beyond the above-mentioned compression section minimum density (below, when being called the 1st invention, what refer to is exactly this invention).
The invention provides a kind of absorbent commodity, this absorbent commodity possesses the surface patch of liquid permeability, back sheet of liquid impermeability (being also referred to as egative film) and the liquid retainability absorber between these two sheets, wherein above-mentioned surface patch constitutes by having upper strata that is disposed at the skin side and the stacked non-woven fabrics that is disposed at the lower floor that absorbs the side, and have a plurality of compression sections that the upper and lower boil down to one is formed, and the lower floor's compression section that between above-mentioned compression section, also only forms by the compression of above-mentioned lower floor, the minimum density of the part in the above-mentioned lower floor beyond above-mentioned compression section and the above-mentioned lower floor compression section be at least in the above-mentioned upper strata part beyond the above-mentioned compression section minimum density (below, when being called the 2nd invention, what refer to is exactly this invention).
The invention provides another kind of absorbent commodity, this absorbent commodity possesses the surface patch of liquid permeability, the back sheet and the liquid retainability absorber between these two sheets of liquid impermeability, has in fact vertically long shape; Above-mentioned surface patch constitutes by having upper strata that is disposed at the skin side and the stacked non-woven fabrics that is disposed at the lower floor that absorbs the side, and have a plurality of compression sections that the upper and lower boil down to one is formed and the lower floor's compression section that is also only formed by the compression of above-mentioned lower floor between above-mentioned compression section, above-mentioned surface patch has only outstanding by the extension of above-mentioned upper strata and single-layer portions that form in the two side portions longitudinally of absorbent commodity; Has a part in the above-mentioned surface patch by 2 layers of stacked structure of above-mentioned upper strata and above-mentioned lower floor, horizontal middle section at above-mentioned absorbent commodity covers above-mentioned absorber, both sides at this middle section, above-mentioned single-layer portions cover this absorber (below, when being called the 3rd invention, what refer to is exactly this invention).
The invention provides a kind of surface patch of absorbent commodity, the surface patch of this absorbent commodity constitutes by having upper strata that is disposed at the skin side and the stacked non-woven fabrics that is disposed at the lower floor that absorbs the side, and has a plurality of compression sections that the upper and lower boil down to one is formed and the lower floor's compression section that is also only formed by the compression of above-mentioned lower floor between above-mentioned compression section; Be formed with the perforate that connects above-mentioned upper strata and above-mentioned lower floor (below, when being called the 4th invention, what refer to is exactly this invention) on the above-mentioned stacked non-woven fabrics.
The invention provides another kind of absorbent commodity, this absorbent commodity possesses the surface patch of liquid permeability, the back sheet and the liquid retainability absorber between these two sheets of liquid impermeability, wherein above-mentioned surface patch be the related above-mentioned absorbent commodity of the 4th invention surface patch (below, when being called the 5th invention, what refer to is exactly this invention).
The invention provides another kind of absorbent commodity, this absorbent commodity possesses the surface patch of liquid permeability, the back sheet and the liquid retainability absorber between these two sheets of liquid impermeability, has in fact vertically long shape; Above-mentioned surface patch constitutes by having upper strata that is disposed at the skin side and the stacked non-woven fabrics that is disposed at the lower floor that absorbs the side, and have a plurality of compression sections that the upper and lower boil down to one is formed and the lower floor's compression section that between above-mentioned compression section, also only forms, on above-mentioned stacked non-woven fabrics, be formed with the perforate that connects above-mentioned upper strata and above-mentioned lower floor by the compression of above-mentioned lower floor; Above-mentioned surface patch has only outstanding by the extension of above-mentioned upper strata and single-layer portions that form in the two side portions longitudinally of absorbent commodity, has a part in the above-mentioned surface patch by 2 layers of stacked structure of above-mentioned upper strata and above-mentioned lower floor, horizontal middle section at above-mentioned absorbent commodity covers above-mentioned absorber, both sides at this middle section, above-mentioned single-layer portions cover this absorber (below, when being called the 6th invention, what refer to is exactly this invention).
Description of drawings
Fig. 1 is that expression is as the surface patch of surface patch one embodiment of the absorbent commodity of the 1st invention and the plane graph of the sanitary napkin that uses it.
Fig. 2 is the sketch map in the I-I line cross section of presentation graphs 1.
Fig. 3 is the sectional view of the thickness direction cross section details of expression surface patch shown in Figure 1.
The preference of Fig. 4 (a) expression sheet compression section configuration pattern, the preference of Fig. 4 (b) expression lower floor compression section configuration pattern.
Fig. 5 is used to illustrate the function of surface patch of the 1st invention and the sketch map in presentation surface sheet thickness direction cross section.
Fig. 6 is the floor map of expression as surface patch with the sanitary napkin that uses it of surface patch one embodiment of the absorbent commodity of the 4th invention.
Fig. 7 is the sketch map in the II-II line cross section of presentation graphs 6.
Fig. 8 is the sectional view of the thickness direction cross section details of expression surface patch shown in Figure 6.
Fig. 9 (a) is expressed as an example of the configuration pattern of the sheet compression section with perforate in the plane graph of a part on surface of the surface patch upper layer side of amplifying presentation graphs 6.Fig. 9 (b) is expressed as an example of the configuration pattern of the lower floor's compression section in the plane graph of a part on surface of the surface patch lower layer side that amplifies presentation graphs 6.
Figure 10 is used to illustrate the function of surface patch of the 4th invention and the sketch map in presentation surface sheet thickness direction cross section.
Figure 11 is the sectional view of expression as the details in the cross section of the surface patch thickness direction of other embodiment of the 4th invention.
Figure 12 (a) is expressed as the sheet compression section with perforate in the plane graph of a part on surface of the surface patch upper layer side of amplifying expression Figure 11 and does not have the example of configuration pattern of the sheet compression section of perforate.Figure 12 (b) is expressed as an example of the lower floor's compression section configuration pattern in the plane graph of a part on surface of the surface patch lower layer side that amplifies expression Figure 11.
The specific embodiment
The present invention relates to surface patch and the absorbent commodity that uses it, this surface patch can be successfully imports absorber with the liquid that supplies on the surface patch, can prevent effectively because liquid remains in unplessantness displeasure that the surface produces or airtight and owing to the liquid mobile seepage that produces etc. from the teeth outwards.
Below, based on its embodiment preferred, the present invention will be described with reference to accompanying drawing.
Sanitary napkin 1 illustrated in figures 1 and 2 is an embodiment of the absorbent commodity of the 2nd and the 3rd invention, possess the surface patch 2 of liquid permeability, the back sheet 3 of liquid impermeability and the absorber 4 of the liquid retainability between these two sheets, form in fact vertically long.Surface patch 2 is an embodiment of the surface patch of the 1st absorbent commodity of inventing.
Surface patch 2 has the size bigger than absorber 4, and both side edges portion is bonding at the non-skin contact surface side and the back sheet 3 of absorber 4 longitudinally for it.The both ends longitudinally of surface patch 2 are more extended outstanding to foreign side than the front and back end of absorber 4, prolong partly at it to engage with back sheet 3.Dispose the leakage prevention sheet 5 of liquid impermeability between absorber 4 and back sheet 3, the both side edges portion of leakage prevention sheet 5 covers the both sides of absorber 4, is positioned at the skin contact surface side of absorber 4.As absorber 4, can use the material that is generally used for this absorbent commodity, there is no particular restriction.As back sheet 3 and leakage prevention sheet 5, preferably use the thin film of olefine kind resin systems such as polypropylene or polyethylene maybe this thin film and ply of paper to be pressed and the sheet of formation, or the non-woven fabrics of water proofing property etc.
As shown in Figures 2 and 3, surface patch 2 constitutes by having upper strata 21 that is disposed at the skin side and the stacked non-woven fabrics that is disposed at the lower floor 22 of absorber 4 sides.The present invention program's surface patch 2 has vertical and horizontal, as depicted in figs. 1 and 2, has the single-layer portions 25 that only is made of upper strata 21 in both sides longitudinally at it.
Surface patch 2, make it vertically and under the state of the vertical consistency of sanitary napkin 1, have 2 layers of stacked structure of upper strata 21 and lower floor 22 part 20 (below, be also referred to as 2 layers of structure division) cover absorber 4 at the horizontal middle section (part shown in Fig. 1 bend) of sanitary napkin, in the both sides of this middle section, only the single-layer portions 25 that is made of upper strata 21 covers absorber 4.
Because this structure, sanitary napkin 1 can make mobile the concentrate on middle section of liquid to absorber, can suppress liquid simultaneously to the diffusion of the both sides of middle section, transverse leak-proof and prevent menses diffusibility excellence.In addition, owing to obtain good resiliency at middle section, so excellence such as fitness.
Surface patch 2 in the present embodiment, its both side edges portion 26,26 is adhesively fixed between absorber 4 and back sheet 3 in the both sides longitudinally of sanitary napkin 1, its longitudinally before and after end 27,27 at the both ends longitudinally of sanitary napkin 1, be fixed on from the ora terminalis of absorber 4 by known joint method and extend on the outstanding back sheet 3.
As shown in Figure 3, surface patch 2 has a plurality of compression sections 23 that upper strata 21 and lower floor 22 are formed along thickness direction boil down to one and the lower floor's compression section 24 that between above-mentioned compression section 23,23, is only formed by lower floor's 22 compressions.
Upper strata 21 and lower floor 22 constitute by fiber assembly.Here said fiber assembly, except the non-woven fabrics that adopts various method for makings productions, its notion also comprises with the fleece before the non-woven fabricsization of carding machine preparation.
In addition, upper strata 21 and lower floor 22, at the fiber assembly that will be used to form upper strata 21 be used to form under the mutually stacked state of the fiber assembly of lower floor 22, by with predetermined pattern with its implement heat embossing together, embossing processing such as ultrasonic wave embossed makes them integrated along thickness direction.
The compression section of sheet compression section 23 for forming by this embossing processing with boil down to one between the face on the face of skin side and absorption side, compared with other parts in the surface patch 2, and thickness reduces.
In sheet compression section 23, owing to add the heat that applies man-hour, between the formation fiber on upper strata, mutual heat fusing is bonding respectively between the formation fiber of the formation fiber on upper strata and lower floor and between the formation fiber of lower floor in embossing.
The configuration pattern of sheet compression section 23 in Fig. 4 (a) expression the present embodiment.Sheet compression section 23 in the present embodiment, become a plurality of diffusing point-like with circular decentralized configuration respectively, each sheet compression section 23 is surrounded by other 6 sheet compression sections 23 that the distance with this compression section 23 equates respectively, and these 6 sheet compression sections, 23 configurations form regular hexagon.
In addition, surface patch 2 has a plurality of lower floors compression section 24 that is only formed by lower floor's 22 compressions.Lower floor's compression section 24, the fiber assembly that will be used to form upper strata 21 and be used to form the fiber assembly of lower floor 22 stacked before, by only to the fiber assembly that forms lower floor 22 with predetermined pattern implement heat embossing, embossing processing such as ultrasonic wave embossed forms.
In the infra layer compression part 24, owing to add the heat that applies man-hour in embossing, heat fusing is bonding mutually between the formation fiber of lower floor.In lower floor, lower floor's compression section 24 is not compared with there being compressed other parts, and thickness reduces.
The configuration pattern of lower floor's compression section 24 has identical scale with Fig. 4 (a) in Fig. 4 (b) expression the present embodiment.Lower floor's compression section 24 in the present embodiment becomes a plurality of diffusing point-like with circular decentralized configuration respectively, each compression section 24 is surrounded by 6 lower floor's compression sections 24 that the distance with this compression section 24 equates respectively, and these 6 lower floor's compression sections, 24 configurations form regular hexagon.
In addition, lower floor's compression unit is arranged in performance between the sheet compression section at it, except on the straight line that connects between 2 sheet compression sections of adjacency, having 1,1 or above situation, also be included in the situation of 1,1 of certain existence in the zone of the polygon that forms 3 or above sheet compression section (having the polygon of sheet compression section) shape or above lower floor's compression unit in each bight.In the present embodiment, in the zone of the triangle that 3 sheet compression sections form, there is a plurality of (about 3～6) lower floor's compression section 24.
The surface patch 2 of the present embodiment, part in the lower floor 22 beyond sheet compression section 23 and the lower floor's compression section 24, promptly do not have in fact compressed part (below, being called the non-compression section of lower floor) 29 minimum density ρ 2 is at least the minimum density ρ 1 of the part beyond the sheet compression section 23 in (or being higher than) upper strata 21 (below, become the non-compression section of sheet) 28.From improving the mobility of liquid, particularly liquid sets out in the ambulant viewpoint of thickness direction, the minimum density ρ 2 of the non-compression section 29 of preferred lower floor is than minimum density ρ 1 height of the non-compression section 28 of sheet, and the ratio (ρ 2/ ρ 1) of preferred especially minimum density is 1.1～10.In addition, the minimum density ρ 2 of the non-compression section 29 of preferred lower floor is 0.01～0.2g/cm 3, the minimum density ρ 1 of the preferred non-compression section 28 of sheet is 0.001～0.1g/cm 3
Here, the non-compression section 29 of non-compression section 28 of sheet and lower floor minimum density ρ 1, ρ 2 separately can as described belowly measure.
Weight (basic weight) by the thickness and the per unit area of each layer is calculated.The thickness of each layer on the straight line by 2 sheet compression sections 23 or 2 lower floor's compression sections 24, cuts off composite sheet down not exerting pressure with cutting machine etc., measures the thickness of non-compression section 28 of sheet and the non-compression section 29 of lower floor.Thickness measurement uses the digital HF microscope (ModelVH8000) of KEYENCE company, the thickness of the maximum ga(u)ge part of the non-compression section 28 of sheet on mensuration upper strata and the non-compression section 29 of lower floor of lower floor.The weight of each layer per unit area (basic weight) is measured respectively by peeling off the upper and lower.
Density is calculated by following formula: the weight/thickness of density p=per unit area.
In addition, from improving the apparent density of the non-compression section 29 of lower floor, raising liquid is the 21 ambulant viewpoints to lower floor 22 from the upper strata, the disposition interval P2 (with reference to Fig. 4 (b)) of preferred lower floor compression section 24 is littler than the disposition interval P1 (with reference to Fig. 4 (a)) of sheet compression section 23, and more preferably the ratio (P2/P1) of disposition interval is 0.1～0.7.
The disposition interval of sheet compression section 23 and lower floor's compression section 24, when a plurality of decentralized configuration of compression section of point-like, be immediate 2 compression sections distance between the central point separately, when the configuration of a plurality of parallel shapes of the compression section of curve or linearity, be 2 adjacent compression sections beeline between the centrage (with wide binary line) separately.
In addition, the shape of each compression section during with the compression section 23 of point-like, more than 24 decentralized configuration except circle, can be arbitrary shapes such as ellipse, triangle, quadrangle, rhombus, heart.Preferred two compression sections 23,24 are respectively discrete point-like along two directions of the vertical and horizontal of surface patch, but can be successive wire at the vertical or horizontal of surface patch.The compression section 23,24 of preferred point-like is along the integral body of 2 layers of structure division 20 of sheet decentralized configuration equably.
From improving the apparent density of the non-compression section 29 of lower floor, provide liquid from the upper strata 21 ambulant viewpoints to lower floor 22, preferably compare with sheet compression section 23, the number and/or the gross area in the equal area of the surface patch 2 of lower floor's compression section 24 are big, more preferably the ratio of the above-mentioned number of the above-mentioned number of sheet compression section 23 and lower floor's compression section 24 (the former/latter) is 1/4～1/50, in addition, more preferably the ratio of the above-mentioned gross area of the above-mentioned gross area of sheet compression section 23 and lower floor's compression section 24 (the former/latter) is 1/2～1/800.
In addition, from the ambulant viewpoint of feel or skin sense of touch and liquid, preferred sheet compression section 23 is at every 100mm 2Number in the surface patch is 1～20, preferred 100mm 2In the gross area of sheet compression section 23 be 0.1～35mm 2In addition, from the ambulant viewpoint of liquid, preferred lower floor compression section 24 is at every 100mm 2Number in the surface patch is 4～35, preferred 100mm 2In the gross area of lower floor's compression section 24 be 5～80mm 2
And, about above-mentioned number and the gross area and their ratio, with every 100mm 2Measure, measuring zone carrying out everywhere for uniform pattern and formation sheet compression section 23 and lower floor's compression section 24.The area that its intersection when in addition, the compression section that forms in being used to form the fiber assembly of lower floor overlaps with sheet compression section 23 is not counted in the number of lower floor's compression section 24 or the gross area when calculating.
From improving the ambulant viewpoint of liquid at thickness direction, towards the surface that absorbs the side, the fibre diameter that constitutes fiber reduces preferred surface sheet 2 gradually or interimly from the surface of skin side.
The concrete scheme that reduces as the fibre diameter stage that constitutes fiber, thus the fibre diameter of the fiber that constitutes lower floor 22 scheme littler can be enumerated, scheme that fiber diameter that the fiber that mixes different fibre diameters in each layer makes the fiber that constitutes lower floor 22 is littler than the fiber diameter of the fiber that constitutes upper strata 21 etc. than the fibre diameter of the fiber that constitutes upper strata 21.
The fiber of different fibre diameters is mixed in any one deck of upper strata 21 and lower floor 22 respectively or when two-layer, the fiber diameter of upper strata 21 or lower floor 22 can be tried to achieve by the weight rate of the fiber that constitutes upper strata or lower floor.For example, when the upper strata was made of the fiber 25 weight % of the fiber 75 weight % of fibre diameter 3dtex and 4dtex, the fiber diameter on this upper strata was 3.25dtex (=3dtex * 0.75+4dtex * 0.25).
As the concrete scheme that the fibre diameter that constitutes fiber reduces gradually, can be set forth in fiber assembly that constitutes upper strata 21 and/or the inside that constitutes the fiber assembly of lower floor 22 and have the fibre diameter gradient that fibre diameter reduces towards the surface that absorbs the side from the surface of skin side.
As the fiber that constitutes the upper and lower, can enumerate hydrophilic fibres such as pulp fibers, artificial silk, Cotton Gossypii, cellulose acetate, TPO such as polyethylene, polypropylene fiber, polyester such as polyethylene terephthalate, condensation fibrids such as polyamide, the fiber of polymers of vinyl monomers such as polrvinyl chloride, polyvinyl acetate etc.They can be made of one-component, also can be the composite fibres of the parallel type that is made of a plurality of components or core-sheath-type etc.Hydrophobic synthetic fibers preferably carry out hydrophilicity-imparting treatment with hydrophilic oil preparation.In addition, the lower floor in the surface patch of the present embodiment, the viewpoint of the processability during from high-speed production does not preferably contain heat-shrinkable fiber, particularly potential crimping property fiber.The heat-shrinkable fiber is the fiber that is constituted and had heat-shrinkable by thermoplastic, polymeric materials, and the potential crimping property fiber is can similarly handle with fiber with non-woven fabrics in the past before the heating and show spiral helicine curling and have a fiber of retractable property setting under the temperature heating.
From making sheet compression section 23 and/or lower floor's compression section 24 become heat embossing, heat settability excellence such as ultrasonic wave embossed, thereby the viewpoint that the cementability that makes the upper strata-following interlayer of surface patch improves is set out, preferred the upper and lower are contained by polyethylene in a surperficial at least part respectively, hot-melt-bondable fiber (the composite fibre that the sheath composition is made of thermoplastic resin that thermoplastic fibres such as alkene such as polypropylene constitute, all fibers that constitutes by thermoplastic resin etc.), the content of hot-melt-bondable fiber is preferably 70～100% with respect to the upper and lower weight separately.
Surface patch 2 preparations as described below of the present embodiment: after forming lower floor's compression unit 24 the fiber assembly that is used to form lower floor 22 having been implemented embossing processing, the stacked thereon fiber assembly that is used to form upper strata 21 is implemented incorporate embossing processing to them under this state.
In addition, as the method that forms sheet compression section 23 and lower floor's compression section 24, except embossing processing, can also use bonding agent etc.
The fiber assembly that is used to form lower floor 22 is that hot blast (air-through) non-woven fabrics, hot-rolling are pressed (heat roll) non-woven fabrics, spun bond nonwoven fabric, jet net-spraying method non-woven fabrics etc. with the fiber assembly that is used to form upper strata 21, and it is unrestricted, but never near the viewpoint of the densification of the fiber the large volume of compression section and the compression section is set out, preferred hot-wind nonwoven cloth.
Surface patch 2 according to the present embodiment, in the sheet compression section 28 on upper strata 21, along with approaching with sheet compression section 23, fibre density increases, and forms the density gradient of horizontal direction, therefore as shown in Figure 5, discharge (supply) liquid (A) to the skin side of surface patch 2, shown in arrow A 1, in the sheet compression section 28 by upper strata 21 to 23 diffusions of sheet compression section, near sheet compression section 23 through lower floor 22 successfully to the absorber side shifting.Meanwhile, even aforesaid liquid A is in the position of not spreading (sowing discord) from the supply part substantially to horizontal direction, shown in arrow A 2, because the density gradient between the non-compression section 29 of sheet compression section 28 and lower floor and 21 moving to lower floor 22 from the upper strata, in addition owing to the density gradient that has formed horizontal directions in the lower floor 22 that lower floor's compression section 24 produces, on the upper strata 21 and the boundary part of lower floor 22 or non-compression section 29 internal diffusion of lower floor of lower floor 22, successfully move near the lower floor's compression section 24 from this lower floor 22 and absorb the side.
Like this, discharging (supply) does not remain in the surface of surface patch and promptly moves in the absorber to the liquid on the surface patch 2.Therefore, can prevent the unplessantness displeasure that produces on the top layer of surface patch owing to liquid residue or seepage airtight and that produce in Surface runoff owing to liquid etc. effectively, when absorbing menses etc. and have the liquid of color, do not make the showy hidden effect excellence of its color in addition.
In addition, from the viewpoint of processability and feel, surface patch of the present invention, the preferred 20～70g/m of basic weight of 2 layers of structure division 20 that its upper strata 21 and lower floor 22 are stacked 2, preferred especially 30～60g/m 2
Fig. 6 and sanitary napkin 1A shown in Figure 7 are an embodiment of the absorbent commodity of the 5th and the 6th invention, possess the back sheet 3 of surface patch 2A, liquid impermeability and the absorber 4 of the liquid retainability between these two, form in fact vertically long.Surface patch 2A is an embodiment (being also referred to as the 2nd embodiment) of the surface patch of the 4th absorbent commodity of inventing.
As Fig. 6～shown in Figure 8, the surface patch 2A of the 2nd embodiment is also identical with above-mentioned surface patch 2, constitute by upper strata 21 that is disposed at the skin side and the stacked non-woven fabrics that is disposed at the lower floor 22 that absorbs the side, have the single-layer portions 25 that only constitutes in both sides longitudinally by upper strata 21 at it.Surface patch 2A is to be disposed among the sanitary napkin 1A with the same sample attitude of above-mentioned surface patch 2.
For the sanitary napkin 1A and the surface patch 2A thereof of the 2nd embodiment, describe with regard to the difference of itself and above-mentioned sanitary napkin 1 and surface patch 2 thereof, for identical point labelling prosign, no longer explanation.The aspect that does not have to specify for the 1A of sanitary towel of the 2nd embodiment and surface patch 2A is suitable in to the reconcilable scope of explanation of above-mentioned sanitary napkin 1 and surface patch 2.
The surface patch 2A of the 2nd embodiment, shown in Fig. 8, Fig. 9 (a) and Fig. 9 (b), have a plurality of compression sections 23 that upper strata 21 and lower floor 22 are formed along thickness direction boil down to one and the lower floor's compression section 24 that between sheet compression section 23,23, only forms by lower floor's 22 compressions.
Sheet compression section 23 formation as described below in the 2nd embodiment: the fiber assembly that will be used to form upper strata 21 is stacked mutually with the fiber assembly that is used to form lower floor 22, implements to adopt the protruding perforate processing of perforate of heating for this duplexer.
Adopt perforate processing as described below carry out of perforate: for example with projection, use boring device, this boring device possesses to set pattern and is forming the 2nd roller that has on the periphery of a plurality of perforates with the 1st roller of pin (for example columned projection) and relative configuration with the 1st roller with the corresponding a plurality of recesses of above-mentioned perforate pin on the periphery, stacked upper strata is formed to insert between above-mentioned two rollers with the above-mentioned duplexer of fiber assembly with fiber assembly and lower floor's formation pass through.
Sheet compression section 23 adds the part of using projection pressurization boil down to one man-hour with perforate for above-mentioned perforate, sheet compression section 23 in the present embodiment, because perforate adds the heat that applies man-hour, constitute the fiber assembly on upper strata and the fiber assembly of formation lower floor and be bonded with each other owing to heat fusing is bonding.In addition, sheet compression section 23 therein heart portion have that above-mentioned perforate connects with projection and the perforate 23a that forms.In the sheet compression section 23 perforate 23a around add and be compressed man-hour and be compressed closely adopting perforate to carry out perforate with projection.
Perforate 23a in the 2nd embodiment, because the heat that perforate produces with projection, between the formation fiber on upper strata, heat fusing is bonding mutually between the formation fiber of the formation fiber of the formation fiber on upper strata and lower floor and lower floor, in the internal face of perforate 23a, fiber surface melting and solidification, the existence of perforate 23a improve the permeability of liquid.In addition, the capillary pipe structure that produces from the compression of keeping fiber and improve absorbefacient viewpoint, the curing of the perforate 23a of the preferred bonding generation of heat fusing does not have complete filming.As the means that form this form, can use control perforate conditioned disjunction to cooperate means such as non-melt bonded property fiber described later.
Perforate 23a in the 2nd embodiment, as shown in Figure 8, the opening circumference 23b of lower floor's 22 sides protrudes in absorber 4 sides with tubular (the closer to absorbing the tubular that the side internal diameter reduces gradually).Owing to have the outstanding perforate 23a of opening circumference 23b, hole shape become stabilisation and perforate be difficult for inaccessible, in addition, the fibre density of perforate 23a with compare higherly around it, so liquid further improves to the mobility of absorber.
The projecting degree of opening circumference 23b, from the projecting height H (with reference to Fig. 8) that is present in the lateral recess of absorber (being the plane when the not having recess) 23c around it preferably be at least 0.1mm or more than, be preferably 0.2～0.5mm especially, in addition, be preferably 5～50% of surface patch thickness, more preferably 20～40%.
The thickness of surface patch be sheet separately and no load condition (not applying the state of the external force) thickness of thickness largest portion down, above-mentioned projecting height H also measures under equal state.In addition, protrude in the form that absorbs the side at opening peripheral part 23b, also comprise and make under lower floor's 22 side direction, when placing surface patch on the horizontal plane under independent and the no load condition (not applying the state of external force), the leading section of perforate circumference 23b does not arrive the situation of above-mentioned horizontal plane.
Fig. 9 (a) is expressed as the configuration pattern of the sheet compression section 23 with perforate 23a in the plane graph of a part on surface of upper strata 21 sides of amplifying presentation surface sheet 2A.Sheet compression section 23 in the 2nd embodiment, become a plurality of diffusing point-like with circular decentralized configuration respectively, each sheet compression section 23 is surrounded by other 6 sheet compression sections 23 that the distance with this compression section 23 equates respectively, and these 6 sheet compression sections, 23 configurations form regular hexagon.
In addition, surface patch 2A has a plurality of lower floors compression section 24 that is only formed by lower floor's 22 compressions.Lower floor's compression section 24, the fiber assembly that will be used to form upper strata 21 and be used to form the fiber assembly of lower floor 22 stacked before, by only to the fiber assembly that forms lower floor 22 with predetermined pattern implement heat embossing, embossing processing such as ultrasonic wave embossed forms.
In the infra layer compression part 24, owing to add the heat that applies man-hour in embossing, heat fusing is bonding mutually between the formation fiber of lower floor.In lower floor, lower floor's compression section 24 is not compared with there being compressed other parts, and thickness reduces.
Fig. 9 (b) is expressed as the configuration pattern of lower floor's compression section 24 in the 2nd embodiment in the plane graph (having identical scale with Fig. 9 (a)) of a part on surface of lower floor's 22 sides of amplifying presentation surface sheet 2A.
For being become, sheet compression section 23 and/or lower floor's compression section 24 follow heat embossing, ultrasonic wave embossed, the heat settability excellence of the perforate processing of heating etc., thereby the viewpoint that the cementability that makes the upper strata-following interlayer of surface patch improves is set out, polyethylene is contained in a surperficial at least part respectively in preferred the upper and lower, hot-melt-bondable fiber (the composite fibre that the sheath composition is made of thermoplastic resin that thermoplastic fibres such as alkene such as polypropylene constitute, all fibers that constitutes by thermoplastic resin etc.), the content of hot-melt-bondable fiber is preferably 50～100% with respect to the weight separately of the upper and lower.
In order to control the degree of thermogenetic melting and solidification, the formation fiber of the upper and lower can contain and is not easy melt bonded fiber (hereinafter referred to as non-melt bonded property fiber).By containing non-melt bonded property fiber, sheet compression section 23 has and does not produce the adherent zone of heat fusing, and the liquid that enters surface patch is by sheet compression section 23, and liquid is imported into opening circumference 23b, is absorbed bulk absorption easily.As non-melt bonded property fiber, can use the one-component that constitutes than above-mentioned hot-melt-bondable fiber fusing point high 25 ℃ or above resin to constitute fiber or composite fibre etc.
The surface patch 2A of the 2nd embodiment, as shown in Figure 8, between two perforate 23a, the 23a of adjacency in the lobed shape of skin side.Like this since between perforate 23a, the 23a in the lobed shape of skin side, so soft feeling or skin tactility are good, in addition, the part that contacts with skin reduces, and liquid moves in the absorber easily by surface patch or by perforate, so dry feeling further improves.
According to the surface patch 2A of the 2nd embodiment, discharge (supplys) liquid A to the skin side of surface patch 2A, shown in arrow A 0, flow through the surface of surface patch 2A, the perforate 23a through being formed at sheet compression section 23 successfully moves to the absorption side.In addition, according to the surface patch 2A of the 2nd embodiment, in the non-compression section 28 of the sheet on upper strata 21, the closer to sheet compression section 23, fibre density is high more, form the density gradient in the horizontal direction, in sheet compression section 23, form perforate 23a simultaneously, as shown in figure 10, discharge (supply) liquid A to the skin side of surface patch 2A, shown in arrow A 1, to 23 diffusions of sheet compression section, successfully move to the absorption side by the non-compression section 28 of the sheet on upper strata 21.Meanwhile, even aforesaid liquid A is in the position of not spreading (sowing discord) from the supply part substantially to horizontal direction, shown in arrow A 2, because the density gradient between the non-compression section 29 of sheet compression section 28 and lower floor and 21 moving to lower floor 22 from the upper strata, owing to the density gradient that has formed horizontal directions in the lower floor 22 that sheet compression section 23 and lower floor's compression section 24 produce, be diffused in the non-compression section 29 of lower floor in addition to sheet compression section 23 and/or lower floor's compression section 24.Therefore,, successfully move to the absorption side, meanwhile, successfully move to the absorption side downwards near lower floor's compression section 24 of liquid from this lower floor 22 that layer compression part 24 moves to the liquid that sheet compression section 23 moves.
Like this, discharging (supply) does not remain in the surface of surface patch and promptly moves in the absorber to the liquid on the surface patch 2A.Therefore, can prevent the unplessantness displeasure that produces on the top layer of surface patch owing to liquid residue or seepage airtight and that produce in Surface runoff owing to liquid etc. effectively, when absorbing menses etc. and have the liquid of color, do not make the showy hidden effect excellence of its color in addition.
In addition, from the viewpoint of processability and feel, surface patch of the present invention, the preferred 20～70g/m of basic weight of 2 layers of structure division 20 that its upper strata 21 and lower floor 22 are stacked 2, preferred especially 30～60g/m 2
Below, with reference to Figure 11, Figure 12 (a), Figure 12 (b) other embodiment of the related surface patch of the 4th invention (below be also referred to as the 3rd embodiment) is described.
For the surface patch 2B of the 3rd embodiment, the difference of main explanation and above-mentioned surface patch 2A, for the part that has with spline structure, labelling prosign, no longer explanation.Surface patch 2B for the present embodiment does not have the aspect of special instruction to be suitable in to the reconcilable scope of the explanation of above-mentioned surface patch 2A.
The surface patch 2B of the 3rd embodiment is as upper strata 21 and the integrally formed sheet compression section of lower floor's 22 boil down tos, the sheet compression section 23B that comprises the sheet compression section 23A with perforate 23a and do not have perforate.
In addition, as shown in figure 11, form the shape of projection between 2 perforate 23a, 23a of adjacency in the skin side, in addition,, also form the shape of projection between 2 perforate 23a, 23a of adjacency in the skin side for the absorber side.In addition, the height and position of the face of lower floor's 22 sides is compared among the middle position P between the opening circumference 23b ' on the absorption side of perforate 23a and 2 perforates of adjacency, and is more outstanding to absorber direction (below of Figure 11).
Like this, the surface patch 2B of the 3rd embodiment, in skin side and the lateral two sides of absorber since between perforate 23a, 23a in the lobed shape of skin side, so soft feeling and dry sensation further improve.In addition, in this case,, preferably do not form the curing of the bonding generation of heat fusing substantially, and formed the capillary pipe structure that the compression owing to fiber produces in aperture portion from improving absorbefacient viewpoint.
Sheet compression section 23A is identical with the sheet compression section 23 of above-mentioned surface patch 2A in the 3rd embodiment, the heart has the perforate 23a that the perforate of making forms with the projection perforation therein, add and be compressed man-hour, make its compression closely adopting perforate to carry out perforate around it with projection.In addition, be arranged near the internal face of the perforate of absorber side opening circumference 23b ', because the heat that perforate produces with projection, between the formation fiber on upper strata, mutual heat fusing is bonding respectively between the formation fiber of the formation fiber of the formation fiber on upper strata and lower floor and lower floor.
Perforate 23 in the 3rd embodiment, along a direction (vertical (the MD direction) during manufacturing, the above-below direction of Figure 12 (a)) row of a plurality of perforates formations of configuration in upright arrangement, along producing a plurality of row with an above-mentioned direction orthogonal direction (horizontal (CD direction) during manufacturing) and form, between the row of adjacency and row, produce along the ridge shape rib of these row extensions.Preferred aperture be at sheet specific direction (during manufacturing vertically, laterally, with respect to vertical 45 ° of incline directions etc.) and/or and its orthogonal direction between perforate 23a, the 23a of adjacency in the skin side perforate of lobed shape on the whole (three-dimensional perforate).In addition, Figure 11 represents the cross section of the left and right directions (during manufacturing laterally) along Figure 12 (a).
In addition, perforate 23a in the 3rd embodiment, bigger towards the diameter of recess of skin side that with this perforate 23a is the center than the recess diameter of above-mentioned surface patch, in the above-mentioned recess that with perforate 23a is the center, there are a plurality of compression section 23B with perforate.
The surface patch 2B formation as described below of the 3rd embodiment: upper strata 21 is formed the fiber assembly of usefulness and is processed to form lower floor's 22 formation of lower floor's compression section 24 by heat embossing, embossing such as ultrasonic wave embossed in advance stacked mutually with fiber assembly, this duplexer is implemented heat embossing, embossing processing such as ultrasonic wave embossed, make upper strata 21 and lower floor 22 along thickness direction integrated after, the perforate that this stacked non-woven fabrics implements to adopt the perforate of heating to carry out with projection is processed.
The perforate processing of adopting perforate to carry out with projection, can use for example above-mentioned boring device to carry out, perforate processing in the present embodiment is preferably carried out with following pattern: compare with the spacing P3 of the sheet compression section 23B that does not have perforate, have the spacing P4 bigger (with reference to Figure 12 (a)) of the sheet compression section 23A of perforate.In addition, for make between perforate 23a, 23a the shape that forms projection in the skin side on the whole, should suitably set be used for perforate processing perforate with the diameter of projection and at interval, perforate is with the ratio of the opening diameter of the recess of the diameter of projection and 2nd roller corresponding with it etc.
According to the surface patch 2B of the 3rd embodiment, can obtain same action effect with above-mentioned surface patch 2A.
In addition, preferred every 100mm 2The number of perforate 23a is 3～20 in the surface patch, in addition, the number that preferably makes sheet compression section with perforate be have perforate the sheet compression section number about 50～200%.In addition, every 100mm 2Number in the zone that has formed sheet compression section 23A, 23B and lower floor's compression section 24 with uniform pattern, measure.
More than, the preferred embodiment of the 1st～the 6th invention is illustrated, but in not breaking away from the scope of purport separately, the present invention can carry out suitable variation.
For example, surface patch can have the single-layer portions 25 that only is made of upper strata 21 on the end before and after longitudinally, can make single-layer portions 25 lay respectively at the both sides longitudinally of sanitary napkin 1, make like this its vertically and physiology laterally as one man dispose this surface patch with napkin 1.In addition, surface patch all can have 2 layers of structure that are made of upper strata 21 and lower floor 22.Sheet compression section 23 and lower floor's compression section 24 can be formed at the excretory portion at least of absorbent commodity, also can not be formed at all of all or 2 layers of structure division of surface patch.
In addition, surface patch of the present invention can have the three-dimensional perforate that connects upper strata 21 and lower floor 22, and a plurality of compression sections 23 are configured on the internal face of this solid perforate.This surface patch can as described belowly prepare: for example, with the surface patch 2 of above-mentioned embodiment in the die roll that has a plurality of peckers on the periphery and have a plurality of holes of giving and accepting of being used to insert pecker be subjected to be inserted through between the mould roller, thereby on this surface patch 2, form opening.
In surface patch 2A, the 2B of the 4th～the 6th invention, 2 layers of structure division 20 can have perforate at least, can form in the single-layer portions 25 that only is made of upper strata 21 and also can not form the perforate that connects this upper strata 21.In addition, have the excretory portions that perforate 23a sheet compression section 23 (23A) and lower floor's compression section 24 preferably is formed at absorbent commodity at least, can be not on all or 2 layers of structure division of surface patch all, do not form.
In addition, the perforate 23a of sheet compression section 23 can make the fiber densification by compression, also can be does not make between the fiber heat fusing bonding by heating.In this case, the upper and lower of perforate 23a do not have heat fusing bonding, but combined integrated by forming tubular.
In addition, absorbent commodity of the present invention can also be incontinence pad, sanitary pad, disposable diaper etc. except sanitary napkin.
The important document that omits declaratives in the above-mentioned embodiment and have only an embodiment to have can be applicable to other embodiment respectively, and in addition, the important document that each embodiment has also can suitably carry out the phase double replacement between embodiment.
Adopt the surface patch of the absorbent commodity of the 1st and the 4th invention, the liquid that supplies on the surface patch successfully can be imported in the absorber, can prevent effectively owing to liquid remains in unplessantness displeasure that the surface produces or airtight and owing to the liquid seepage that produces etc. that flows from the teeth outwards.
Adopt the absorbent commodity of the 2nd and the 5th invention, the liquid that supplies on the surface patch successfully can be imported in the absorber, prevent effectively owing to liquid remains in unplessantness displeasure that the surface produces or airtight and owing to the liquid seepage that produces etc. that flows from the teeth outwards.
Adopt the absorbent commodity of the 3rd and the 6th invention, can make mobile the concentrate on middle section of liquid to absorber, can suppress liquid simultaneously to the diffusion of the both sides of middle section, anti-leakage is good.In addition, owing to can obtain good resiliency at middle section, so comfortableness etc. is good.

Claims (12)

1. the surface patch of an absorbent commodity, it constitutes by having upper strata that is disposed at the skin side and the stacked non-woven fabrics that is disposed at the lower floor that absorbs the side, and have a plurality of compression sections that the upper and lower boil down to one is formed, and the lower floor's compression section that between described compression section, also only forms by the compression of described lower floor, described lower floor is made of the fibrous layer that does not contain the heat-shrinkable fiber, and the minimum density of the part beyond described compression section in the described lower floor and the described lower floor compression section is at least the minimum density of the described compression section part in addition in the described upper strata.
2. the surface patch of absorbent commodity according to claim 1 wherein, is compared with described compression section, and the number and/or the gross area of described lower floor compression section are bigger.
3. the surface patch of absorbent commodity according to claim 1, wherein, the disposition interval of described lower floor compression section is littler than the disposition interval of described compression section.
4. the surface patch of absorbent commodity according to claim 1, wherein, towards the face that absorbs the side, the fibre diameter that constitutes fiber reduces described surface patch gradually or interimly from the face of skin side.
5. absorbent commodity, it possesses the surface patch of liquid permeability, the back sheet and the liquid retainability absorber between these two sheets of liquid impermeability, and wherein, described surface patch is the described surface patch of claim 1.
6. the surface patch of an absorbent commodity, it constitutes by having upper strata that is disposed at the skin side and the stacked non-woven fabrics that is disposed at the lower floor that absorbs the side, and have a plurality of compression sections that the upper and lower boil down to one is formed and the lower floor's compression section that between described compression section, also only forms by the compression of described lower floor, described lower floor is made of the fibrous layer that does not contain the heat-shrinkable fiber, wherein, on described stacked non-woven fabrics, be formed with the perforate that connects described upper strata and described lower floor.
7. the surface patch of absorbent commodity according to claim 6, the minimum density that described lower floor is not compressed part in fact is at least the minimum density that described upper strata is not compressed part in fact.
8. the surface patch of absorbent commodity according to claim 6, wherein, described perforate protrudes in described absorption side in the opening peripheral part of described lower layer side.
9. the surface patch of absorbent commodity according to claim 6, wherein, between 2 described perforates of adjacency in the lobed shape of skin side.
10. the surface patch of absorbent commodity according to claim 6, wherein, described perforate is formed at described compression section.
11. the surface patch of absorbent commodity according to claim 6, wherein, as described compression section, it comprises sheet compression section with described perforate and the sheet compression section that does not have perforate.
12. an absorbent commodity, it possesses the surface patch of liquid permeability, the back sheet and the liquid retainability absorber between these two sheets of liquid impermeability, and wherein said surface patch is the described surface patch of claim 6.
CNB2004100798234A 2003-09-19 2004-09-20 Top of absorption article and absorption article Expired - Fee Related CN100387212C (en)

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US11202723B2 (en) 2016-07-01 2021-12-21 The Procter & Gamble Company Absorbent articles with improved topsheet dryness

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