CN1961851B - Absorbent article with resilient portion and method for manufacturing the same - Google Patents

Absorbent article with resilient portion and method for manufacturing the same Download PDF

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Publication number
CN1961851B
CN1961851B CN2006101494911A CN200610149491A CN1961851B CN 1961851 B CN1961851 B CN 1961851B CN 2006101494911 A CN2006101494911 A CN 2006101494911A CN 200610149491 A CN200610149491 A CN 200610149491A CN 1961851 B CN1961851 B CN 1961851B
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CN
China
Prior art keywords
compression section
compression
layer
resilient portion
absorbed layer
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Expired - Lifetime
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CN2006101494911A
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Chinese (zh)
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CN1961851A (en
Inventor
水谷聪
小松慎平
末兼真
田村龙也
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Unicharm Corp
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Unicharm Corp
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Publication of CN1961851A publication Critical patent/CN1961851A/en
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    • 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
    • A61F13/45—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 shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
    • A61F13/47218—Sanitary towels, incontinence pads or napkins specially adapted for female use with a raised crotch region, e.g. hump
    • 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
    • A61F13/53—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 absorbing medium
    • A61F13/531—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 absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—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 absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/533—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 absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having discontinuous areas of compression
    • 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
    • A61F13/53—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 absorbing medium
    • A61F13/534—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 absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/535—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 absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
    • A61F13/536—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 absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes having discontinuous areas of compression
    • 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
    • A61F13/53—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 absorbing medium
    • A61F13/539—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 absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

The invention provides a method for manufacturing an absorbent article, comprising a liquid- permeable face sheet (3) positioned on the skin-side surface, a back sheet (2) positioned clothing-side surface, and an absorption layer (4) positioned therebetween. First pressure contact sections (11) and second pressure contact sections (12), where the absorption layer, together with at least the face sheet, is compressed, extend longitudinally of the absorbent article. The first pressure contact sections are symmetrically disposed with respect to the longitudinal centerline (Oy-Oy) of the absorbent article and spaced outwardly from each other. The method comprises compressing at least the absorption layer from skin surface via a pressing element (100), the pressing element is provided with a first bulge (111), a second bulge (112), a groove (116) froming a first depth (D1) between the first bulge and the second bulge, a first base part (115) forming a second depth (D2) between the frist bulges, and a second base part (117) forming a third depth (D3) on the outer side of the first bulge, wherein the first depth is smaller than the second depth and the third depth, by using the groove, pressure exerted on a position between the first pressure contact sections and the second pressure contact sections are greater than a position facing the first base part and the second base part.

Description

Absorbent commodity and manufacture method thereof with resilient portion
The application is to be that JIUYUE in 2003 8 days, international application no are the applying date: be for PCT/JP03/11408, national applications number: 03814631.2, name is called the dividing an application of the international application that enters the China national stage of " absorbent commodity and manufacture method thereof with resilient portion ".
Technical field
The application requires the Japanese patent application NO.2002-263453 that submitted in 9th JIUYUE in 2002 and the priority of the Japanese patent application NO.2002-76393 that submitted in 20th JIUYUE in 2002.The disclosure of above-mentioned Japanese patent application is hereby incorporated by.
The present invention relates to a kind of manufacture method of absorbent commodity.Described absorbent commodity is suitable for absorbing the absorbent commodity of the menses of discharging from female sex organs etc., especially, though this absorbent commodity have be used for making these article in the process of wearing because compression or reverse and also can recover the resilient portion of its original state when being out of shape.
Background technology
The absorbent commodity that is used to absorb the menses of discharging from female sex organs often is configured to the top layer of saturating liquid of the skin surface that comprises absorbed layer, cover absorbed layer and the liquid-tight bottom that covers the garment surface of absorbed layer.Wear when usually, these article are on the inboard of the groin section that bottom is sticked to underwear by the pressure sensitive adhesive adhesion coating.
In order to collect the liquid of partly discharging definitely, skin surface is closely contacted with wearer's drainage part from wearer's drainage by this absorbent commodity.If when this absorbent commodity is worn in the crotch, between the skin surface of this absorbent commodity and excretory portion divide, have the gap, the drain that then is applied on the top layer may flow along top layer, cause the side leakage of this absorbent commodity easily or spill this can cause making dirty underwear or other medicated clothing towards wearer's buttocks.
Therefore, disclosed as following patent publication us 1-3, developed such absorbent commodity, the part between the groove that forms on the skin surface is raise closely to contact with wearer's drainage part.
Patent publication us 1 has disclosed a kind of absorbent commodity, in this absorbent commodity, a raised portion that wherein increases absorber thickness is set medially, forms simultaneously the top side groove of pair of curved on the left side of this raised portion and right side.This top side groove can be used as flexible hinge, so that folding absorber, this is intended to make the raised portion distortion to have the arc-shaped cross-section of giving prominence to towards the wearer.
Patent publication us 2 has disclosed a kind of absorbent commodity, wherein skin contact surface have by groove around the projection of longitudinal tensile strain.This this projection that is intended to raise to be closely contacting with wearer's drainage part, and by coming barrier liquid around this protruding groove, around being used to prevent to diffuse to.
Patent publication us 3 has disclosed a kind of absorbent commodity that is essentially vertical strip, wherein be provided with by the aduncate arch-shaped folded part of vertical side of the edge existing on the zone of absorber, form the district thereby in the part defined in the folded part, form the leakproof wall.This leakproof wall forms the district and is used for that the crotch towards the wearer raises when wearing, and its purpose is to prevent the liquid side leakage of discharging.
[patent publication us 1]
The uncensored patent publication us NO.10-328232 of Japan
[patent publication us 2]
The uncensored patent publication us NO.11-33054 of Japan
[patent publication us 3]
The uncensored patent publication us NO.8-322875 of Japan
Figure 15 is the sectional view that schematically shows the state when being worn as the disclosed this absorbent commodity of patent publication us 1-3.
With reference to Figure 15, wearer's crotch and thigh are by 50 and 51 expressions, and the groin section that will be attached to the underwear in the crotch 50 is by 25 expressions, and traditional absorbent commodity is by 60 expressions.With 60 adhesions of this absorbent commodity and be fixed on the inboard of groin section 25.In aforementioned patent publication us, on the skin surface of absorbent commodity 60, form a pair of groove 61,61, thereby the middle body 62 between groove 61,61 can closely contact with drainage part in crotch 50.
As shown in figure 15, be connected on the groin section 25 and when being worn, often applying horizontal pressure F to groin section 25 and absorbent commodity 60 in the process of walking when absorbent commodity 60 from thigh 51,51.This pressure makes right side and left side groove 61,61 closer to each other, thereby transverse pressure is acted on the middle body 62 between the groove 61,61.
But in traditional absorbent commodity 60, the resilience of opposing transverse pressure depends primarily on the resilience that is arranged on the absorbed layer in the middle body 62.Because the absorbed layer in middle body 62 need feel it is softish for crotch 50, and need to improve its liquid absorption capacity, thus its basic weight height, and its density is low.Therefore, when being compressed and be out of shape, as shown in figure 15, its horizontal resilience is very poor, so that can not be easily by its width of the recovering state that is compressed and is out of shape.On the other hand, when absorbent commodity according to the motion of crotch and whole distortion the time, it is not easy to recover from twisted state.
Particularly when absorbed layer has high basic weight and low-density as previously mentioned, its resilience for example can reduce after the menses at the liquid that has absorbed discharge, in case thereby middle body 62 is flattened by the pressure from crotch 50, just can not recover its bulkiness, and it at since the horizontal resilience of the compression of pressure F sharply reduce.Therefore, even opened in 51,51 minutes when very wide at thigh, this absorbent commodity keeps laterally by compression or distortion, has reduced the area of the skin surface of absorbent commodity 60, and has formed at interval between these article and crotch 50 easily, and this can cause side leakage easily.
In addition, owing to all being formed at the traditional absorbent commodity disclosed in the aforementioned patent publication us groove 61 is set respectively on each side, therefore, when being out of shape as shown in figure 15, the sidepiece 63,63 that is positioned at groove 61 outsides contacts middle bodies 62 easily.As a result, the drain that is applied on the middle body 62 flows to sidepiece 63,63 easily, and along the horizontal proliferation of absorbent commodity 60.Just, can not reach the effect by groove 61,61 diffusion drains, this causes causing the drain side leakage easily.
In order to prevent to be applied to the drain side leakage on the absorbent commodity, longitudinal extension and horizontal relative leakproof wall on the skin surface of absorbent commodity have been developed.This leakproof wall is made of the elastic component that is arranged on the liquid-tight layer, be used to produce elastic contractile force longitudinally, thereby this layer rises from skin surface because of elastic contractile force.
But traditional absorbent commodity is easy deformation or distortion in the process that wears, because at be under pressure F or can reduce its conformality when having absorbed drain of absorbent commodity.In this case, leakproof wall preceding and back raises point easily because the distortion of these article and moving or owing to the distortion of absorbent commodity vertically moves towards longitudinal centre line.Therefore, because the stand up position instability of leakproof wall,, thereby reduce the Liquid Absorption area of skin surface so this leakproof wall may twist or fall towards longitudinal centre line.
Be provided with under the situation of leakproof wall in the absorbent commodity in this length disclosed in patent publication us 1 and 2, it is unstable more that the leakproof wall becomes, because need to increase the length of leakproof wall.When wearing such long absorbent commodity, the leakproof wall can move unexpectedly along with the motion of wearer's body, and this can cause making the leakproof wall to be more prone to distortion or fall.
Summary of the invention
The present invention makes in view of above-mentioned shortcoming of the prior art, and an one purpose is to provide a kind of resilience of having improved the opposing transverse compression to spill the manufacture method of absorbent commodity to prevent drain.
Another object of the present invention provides a kind of absorbent commodity, and the leakproof wall that wherein can guarantee to be arranged on its skin surface is on the stand up position.
According to an aspect of the present invention, provide a kind of absorbent commodity, it comprises:
The top layer of the saturating liquid on skin surface;
Bottom on garment surface; And
Absorbed layer between top layer and bottom, wherein
First compression section and second compression section along the longitudinal extension of this absorbent commodity, in this compression section, absorbed layer at least with top layer by compression, the longitudinal centre line of the relative absorbent commodity of this first compression section is provided with symmetrically, has the middle absorbent part of absorbed layer between them, to limit, this second compression section is provided with symmetrically with respect to longitudinal centre line, and outwards separates with first compression section, wherein
When central absorption portion during, make the elastic force that on the middle absorbent part, produces the opposing compression respectively at the resilient portion that limits between every pair of first and second adjacent compression sections by the external force transverse compression.
In this absorbent commodity owing between first and second compression sections, resilient portion is set, this absorbent commodity since the elastic force of resilient portion be easy to from laterally by compression or the recovering state that twists to its original state.Particularly when partially absorbing drain by the middle absorbent between first compression section, the liquid of discharge can be stopped by first compression section, in case non-return bullet part is soaked.Therefore, though in the resilience of middle absorbent part owing to absorbed drain after the variation, the resilient portion on its both sides also can produce enough elastic force all the time so that absorbent commodity from laterally by compression or the recovering state of distortion.
In each resilient portion, absorbed layer can be compressed the density that is higher than the density in the middle absorbent part to have.
The width of resilient portion is preferably less than half of the width of middle absorbent part, preferably less than 1/3rd.
When the width that makes resilient portion reduced, the resilient portion between first and second compression sections can have narrow high-density layer, thereby can easily produce big elastic force.And when resilient portion narrowed down, resilient portion can make wearer's skin that uncomfortable feeling is arranged hardly.
In each resilient portion, absorbed layer can be compressed owing to the formation of first and second compression sections.
Perhaps, in each resilient portion, owing to form first and second compression sections, the absorbed layer of hydrophilic fibre can be with the non-woven fabric of synthetic fibers by compression.
In the latter case, preferably, absorbed layer also in each first compression section with non-woven fabric by compression.For example, non-woven fabric can be by the bonding non-woven fabric of hot blast method.
The absorbed layer that constitutes when the foregoing hydrophilic fibre that in resilient portion, not only is provided with mainly by for example slurry, and when the non-woven fabric of synthetic fibers is set, can further improve resilience.Particularly because contain synthetic fibers in the resilient portion, even after the liquid of discharging is applied on the resilient portion, also be difficult to destroy resilience force.In addition, when first compression section contains synthetic fibers, make synthetic fibers fusion therein and curing, thereby even after soaking, still can keep the compressive state of first compression section by drain.
Between top layer and bottom, each resilient portion can be individually or with by compression absorbed layer has the elasticity reinforcement in combination owing to form first and second compression sections.
This reinforcement can be foaming polyurethane resin, treated and the hydrophilic foaming polyurethane resin of tool, perhaps synthetic rubber.
Preferably, resilient portion is the most approaching each other at the lateral reference line place of absorbent commodity, and extends to extend gradually when leaving the lateral reference line towards the longitudinal relative end portion of absorbent commodity at them and leave this centrage.For example, each resilient portion can have towards the shape of the line of centrage bending.
Preferably, each resilient portion has the part of constant width, on this part, and the first and second compression sections constant distance that is spaced apart from each other.
Utilizing this structure, can almost be to act on equably on each part of resilient portion from the power of wearer's thigh.In addition, resilient portion can make thigh feel under the weather hardly.
Absorbent commodity can so be constituted, that is, limit a sidepiece respectively between the longitudinal extending side edge of the correspondence of each second compression section and absorbent commodity, and elastic contractile force is longitudinally acted on this sidepiece.
In this case, sidepiece can raise towards wearer's skin owing to the elastic contractile force in the crotch that is applied to the wearer, thus serves as the leakproof wall that is used to prevent side leakage.Herein, because first compression section, second compression section and resilient portion are set between middle absorbent part and the sidepiece, so the middle absorbent part contacts with sidepiece hardly, thereby can prevent that drain from flowing to sidepiece from central absorption portion, to improve the leak preventing effect of sidepiece.
In an embodiment of this absorbent commodity, the layer of longitudinal extension is set on skin surface, and the middle absorbent part is exposed betwixt, described each layer is fixed on the skin surface at its front and rear place, rise from skin surface at the part place therebetween simultaneously, to form the leakproof wall, wherein at least one in the preceding and back point that raises of leakproof wall and second compression section are approaching.
This raises point can be near the end of second compression section.
In the end of the rising point of leakproof wall so being arranged to approach second compression section or second compression section, just under the situation of resilient portion, can suppress the irregular of rising point of leakproof wall moves, thus, even be under the wetted state when thigh is exerted pressure the distortion or the whereabouts that also can prevent the leakproof wall having absorbed drain.
In another embodiment of absorbent commodity, the first back compression section is provided in that they are little by little close to each other when the back edge of absorbent commodity is extended continuously from first compression section, and the second back compression section is separately positioned between each first back compression section and the corresponding lateral edges and spaced apart with the first back compression section, wherein
The layer of longitudinal extension is set on skin surface, and the middle absorbent part exposes betwixt, each layer is fixed on the skin surface at its front and rear place, rise from skin surface at the part place therebetween simultaneously, to form the leakproof wall, wherein the preceding rising of leakproof wall is o'clock near first compression section, and the back rising of leakproof wall is o'clock near the second back compression section.
The back rising point of leakproof wall can be near the front end of the second back compression section.
Still in this case,, can stop and irregularly move the distortion or the whereabouts that prevent the leakproof wall thus because the back resilient portion that limits between the first back compression section and the second back compression section is subjected to elastic force owing to the back rising point of leakproof wall.
Herein, near preferably being meant 45mm or littler distance, preferred 25mm or the littler distance of being meant.
Absorbent commodity of the present invention is suitable for use as sanitary towel.
Even owing to also sanitary towel is worn in the crotch between active stage by day, they are shunk or distortion by the pressure from wearer's thigh easily.But, because absorbent commodity of the present invention has resilient portion, so it can easily recover from this contraction or twisted state.
According to another aspect of the present invention, provide a kind of method that is used to make absorbent commodity, this absorbent commodity comprises: the top layer of the saturating liquid on skin surface; Bottom on garment surface; And the absorbed layer between top layer and bottom; First compression section and second compression section along the longitudinal extension of absorbent commodity, in this compression section, absorbed layer at least with top layer by compression, this first compression section is provided with symmetrically with respect to the longitudinal centre line of this absorbent commodity, this second compression section is provided with symmetrically with respect to longitudinal centre line and is outwards spaced apart with first compression section, and this method comprises:
The pressing element that utilization has first projection that is spaced apart from each other that is used to form first compression section and second projection that is used to form second compression section that is arranged on the first projection outside is oppressed the step of absorbed layer at least from skin surface, wherein
This pressing element has: between every pair first and second adjacent projection, form respectively to have from the groove of first degree of depth at the top of first projection; First base portion that between first projection, forms with second degree of depth; And second base portion that forms in the first projection outside with the 3rd degree of depth, wherein first degree of depth is less than second degree of depth and less than the 3rd degree of depth, thereby absorbed layer is in the position of being faced by first and second base portions and is subjected to bigger compression having position between first and second compression sections of groove.
In the method, preferably absorbent commodity is not oppressed by first and second base portions basically.
But, can utilize first and second base portions to oppress absorbed layer slightly, as long as absorbed layer is lower in the density of the position of being oppressed by groove at the position ratio of being faced by first and second base portions.
Description of drawings
From the accompanying drawing of the following detailed description that provides and the preferred embodiment of the invention, can more fully understand the present invention, but they should not be used as limitation of the present invention, but only be used for explaining and understanding.Among the figure:
Fig. 1 is the vertical view of expression conduct according to the sanitary towel of the absorbent commodity of first embodiment of the invention;
Fig. 2 A is the half-section on figure of sanitary towel along the line IIa-IIa intercepting of Fig. 1, and Fig. 2 B is the half-section on figure of sanitary towel along the line IIb-IIb intercepting of Fig. 1;
Fig. 3 is a sectional view of expressing the state on the groin section that sanitary towel shown in Figure 1 is fixed on underwear;
Fig. 4 is the sectional view that schematically shows the state that groin section and sanitary towel be out of shape owing to transverse pressure;
Fig. 5 is the vertical view that schematically shows the state that groin section and sanitary towel be out of shape owing to transverse pressure;
Fig. 6 is the half-section on figure of expression according to the sanitary towel of second embodiment of the invention;
Fig. 7 is the half-section on figure of expression according to the sanitary towel of third embodiment of the invention;
Fig. 8 A is the vertical view of expression according to the sanitary towel of four embodiment of the invention, and Fig. 8 B and 8C are the vertical views of amplification of the shape of expression compression point;
Fig. 9 is the vertical view of expression according to the sanitary towel of fifth embodiment of the invention;
Figure 10 is the vertical view of expression according to the sanitary towel of sixth embodiment of the invention;
Figure 11 is the vertical view of expression according to the sanitary towel of seventh embodiment of the invention;
Figure 12 is the vertical view of expression according to the sanitary towel of eighth embodiment of the invention;
Figure 13 is the vertical view of expression according to the sanitary towel of ninth embodiment of the invention;
Figure 14 A and 14B demonstrate the pressing element that is used to form compression section, and wherein Figure 14 A is a partial plan view, and Figure 14 B is the sectional view along line B-B intercepting; And
Figure 15 is the sectional view that explanation wears the problem of the conventional sanitary towels in wearer crotch.
The specific embodiment
Below with reference to accompanying drawing at going through the present invention according to the preferred embodiments of the invention.In the following description, a plurality of details have been proposed so that for the invention provides comprehensive understanding.But for the person of ordinary skill of the art, the present invention can not adopt these concrete details to implement clearly.In other example, do not demonstrate known structure in detail, so that avoid the present invention is caused unnecessary obscuring.
In the present invention, absorbent commodity refers to such device, it is used to be worn in wearer's the crotch to absorb the various effluents of discharging from wearer's health, for example menses, urine and vaginal discharge, but in following embodiment, this absorbent commodity is to come imbody with the sanitary towel that its main purpose is to absorb the menses of discharging from women's vaginal opening.Should be understood that, this absorbent commodity has two main surfaces: one of them surface that will be worn towards wearer's crotch is called as " skin surface ", and another surface all is referred to as " garment surface " no matter whether put on clothes in the outside of absorbent commodity.
As used herein, term " compression section " is meant such part, wherein absorbed layer at least with top layer together by high compression, and they remain in the state of this high compression.
As used herein, term " resilient portion " is meant such part, that is, this part laterally can produce than the therebetween bigger elastic force (repulsive force) of middle absorbent part by compression the time at absorbent commodity.
As used herein, term " longitudinal centre line " is meant that longitudinal extension is with the lines with the horizontal dimidiation of absorbent commodity.On the other hand, term " lateral reference line " differs the definiteness horizontal expansion with the lines with the vertical dimidiation of absorbent commodity.Therein in right side and the uneven each other following embodiment of left side first compression section, will be at the lines of right side and left side first compression section hithermost each other position horizontal expansion as the lateral reference line.If can not point out right side and the hithermost each other position of left side first compression section, for example when they are parallel to each other, then horizontal expansion is striden across the lines that are used for during wearing with the longitudinal center of the contacted part of vaginal opening as the lateral reference line.
Fig. 1 is the vertical view of expression conduct according to the sanitary towel 1 of the absorbent commodity of first embodiment of the invention, and wherein skin surface faces up; Fig. 2 A is the half-section on figure of this sanitary towel along the line IIa-IIa intercepting of Fig. 1; Fig. 2 B is the half-section on figure of this sanitary towel along the line IIb-IIb intercepting of Fig. 1; Fig. 3 is the sectional view that expression is fixed on sanitary towel the state on the groin section of underwear; Fig. 4 is the sectional view that schematically shows the state that groin section and sanitary towel be out of shape owing to transverse pressure; Fig. 5 is the vertical view that schematically shows this deformation state.
As shown in the vertical view of Fig. 1, sanitary towel 1 is elongated, wherein the right side of longitudinal extension and left side edge 1a and 1b along laterally with the constant distance in longitudinal centre line Oy-Oy interval, and it is longitudinally spaced apart with lateral reference line Ox-Ox to have the front edge 1c and a back edge 1d of bandy curve shape.Should be pointed out that as shown in Figure 1, be provided with in sanitary towel under the situation of alar part 18 and 18 that right side and left side edge 1a and 1b will be described to comprise imagination cut-out line A and the A that extends along the base portion of alar part 18 and 18.
Shown in the sectional view of Fig. 2 and 3, sanitary towel 1 has the top layer 3 at lip-deep liquid-tight bottom 2 of underwear and the saturating liquid on skin surface.Between bottom 2 and top layer 3, absorbed layer 4 is set.Absorbed layer 4 is configured to comprise: the first absorbed layer 4a, and its periphery is by shown in the dotted line among Fig. 1; The second absorbed layer 4b, its area is littler than the first absorbed layer 4a, and is arranged on the first absorbed layer 4a, and its periphery is also by being shown in dotted line among Fig. 1; And the 3rd absorbed layer 4c, its area is littler than the second absorbed layer 4b, and places on the second absorbed layer 4b in being the middle absorbent part 5 of hourglass shape.
Herein, top layer 3 and absorbed layer 4 are compressed to form compression section 10 at least.Compression section 10 utilizes the pressing element that will be described later to form by embossing, and wherein the first absorbed layer 4a, the second absorbed layer 4b, the 3rd absorbed layer 4c and top layer 3 are stacked on top of each other, are being heated under top layer 3 side applied pressures then.The result, compression section 10 has the compression section 10b of highdensity compression section 10a and the intermediate density between adjacent high density compressed part 10a, in compression section 10a, absorbed layer and top layer 3 pressurizations are almost become film like until them, in compression section 10b, although need not become film like, the density of absorbed layer is than the density height of the part except that compression section 10.Utilize high density compressed part 10a and intermediate density compression section 10b to replace each other, each compression section 10 forms compressed grooves, and at this compressed grooves place, the skin surface of sanitary towel 1 is towards bottom 2 depressions.
Compression section 10 comprises first compression section 11 and 11, they are provided with symmetrically with respect to longitudinal centre line Oy-Oy, also comprise second compression section 12 and 12, they are provided with symmetrically with respect to longitudinal centre line Oy-Oy, and with first compression section 11 and 11 outwards spaced apart. First compression section 11,11 and second compression section 12,12nd are along the compressed grooves of extending towards the camber line of longitudinal centre line Oy-Oy bending, second compression section 12 wherein, 12 along whole second compression section 12,12 and first compression section, 11,11 spaced apart constant distances.
Compression section 10 also is included between first compression section 11,11 and the transverse compression part 13,13 that connects in their front and rear.Transverse compression part 13,13rd is along the compressed grooves of the camber line extension that deviates from lateral reference line Ox-Ox bending.In this embodiment, by 13,13 of first compression section 11,11 and transverse compression parts around the zone be middle absorbent part 5, and second compression section 12,12 is positioned at this middle absorbent part outside.
Compression section 10 also further comprises: the compression section 14,14 of Yan Shening forward, and they extend to stretch out forward outside the transverse compression part 13 continuously from first compression section 11,11; And the compression section 15,15 that extends back, they also extend to stretch out backward outside the transverse compression part continuously from first compression section 11,11.
Zone between first compression section 11,11 and second compression section 12,12 is a resilient portion 6,6.This resilient portion 6,6th all has the arc area of constant width along whole second compression section 12,12.On the other hand, be sidepiece 7,7 in zone between right side edge 1a and right side second compression section 12 and the zone between left side edge 1b and left side second compression section 12.
Absorbed layer 4 is provided on whole middle absorbent part 5 and the resilient portion 6,6 and extends, and further stretches out and cross second compression section 12,12, passes half of sidepiece 7,7.
In middle absorbent part 5, the first absorbed layer 4a, the second absorbed layer 4b and the 3rd absorbed layer 4c are stacked on top of each other, so that the bulk middle absorbent layer 4A of high basic weight to be provided, shown in Fig. 2 A.On the other hand, the resilient layer 4B that is provided with in resilient portion 6 is the absorbed layer with higher relatively basic weight, wherein makes the first absorbed layer 4a and the second absorbed layer 4b stacked.In addition, in resilient layer 4B, absorbed layer is compressed to have higher density.And the side absorbed layer 4C that setting is made of the first absorbed layer 4a in sidepiece 7.
The basic weight of resilient layer 4B can equal or be slightly less than the basic weight of middle absorbent layer 4A.But preferably, the basic weight of resilient layer 4B is higher than the basic weight of side absorbed layer 4C, thereby resilient portion 6,6 can produce enough elastic force.
When forming each resilient portion 6, top layer 3 and absorbed layer are oppressed by the embossing projection.At this moment, be heated under pressure with when forming compressed grooves, make to be subjected to from the top layer 3 of the pressure of this projection each other along horizontal cross directional stretch between only spaced apart short-range first and second compression sections 11 and 12 at top layer 3 and absorbed layer.Therefore, between first and second compression sections 11 and 12, make absorbed layer because keep down by the elastic force that produced by tensile top layer 3.Adopt the compression section 11 and 12 that so forms, can make the resilient layer 4B in the resilient portion 6 finer and close more than middle absorbent layer 4A and side absorbed layer 4C.
In replacing embodiment, high density resilient layer 4B can so form, promptly, before forming first and second compression sections 11 and 12, be fed into and resilient portion 6 corresponding positions compressing in advance, then by forming compression section 11 and 12 and further compress absorbed layer with absorbed layer with higher density.
Shown in Fig. 2 A and 3, because first compression section 11,11 and second compression section 12,12nd, towards the compressed grooves of bottom 2 depressions, so middle absorbent part 5 and resilient portion 6,6 raise towards wearer's skin.As hereinafter described, under the situation that resilient portion 6,6 raises towards wearer's skin, middle absorbent part 5 can easily be opened with sidepiece under deformation state shown in Figure 4 in 7,7 minutes.
Among compression section 10, at least the first and second compression sections 11 and 12 (in high density compressed part 10a and intermediate density compression section 10b) have than middle absorbent layer 4A, side absorbed layer 4C and the higher density of resilient layer 4B.Therefore, first and second compression sections 11 and 12 can be as making the sanitary towel can be along its easily crooked flexible hinge. Transverse compression part 13,13, compression section 14,14 of Yan Shening and the compression section 15,15 that extends back also can be used as flexible hinge forward.
Shown in Fig. 1 and 2 A, liquid- tight layer 20,20 is set, and right side and left side liquid- tight layer 20,20 form right side and left side leakproof wall 21,21 respectively on skin surface and in its both sides.Because right side and left side liquid- tight layer 20,20 have symmetrical structure, and right side and left side leakproof wall 21,21 have the symmetrical structure with respect to longitudinal centre line Oy-Oy, right side liquid-tight layer 20 and right side leakproof wall 21 below will only be described, and will omit description to left part, also omitted the Reference numeral of the structure that is used to describe left side leakproof wall in the drawings.
Shown in Fig. 2 A and 2B, with 20 doubling of liquid-tight layer and the elastic component 22 of extension along the longitudinal for example rubber parts remain on therebetween with tensile state, wherein the apparent surface of foldable layer and elastic component 22 bond together.So the liquid-tight layer 20 of doubling has further the folding of fold line 21b that extends longitudinally and the first fin 21a and the second fin 21c that obtains.
Bond on the skin surface of sanitary towel 1 in the zone that the with dashed lines shade of the first fin 21a in Fig. 1 shows.In Fig. 1, the bonding region on the first fin 21a and not the boundary line between the bonding region comprise intermediate boundary lines 22a, preceding boundary line 22b and the back boundary line 22c.In by boundary line 22a, 22b and 22c institute area surrounded (zone that is not shown by the dotted line shade just), the first fin 21a is not bonded on the skin surface.
On the other hand, shown in Fig. 2 B, the second fin 21c lays in the front end 24a of preceding boundary line 22b and the zone between the front edge 1c and is bonded on the first fin 21a at one.The second fin 21c lays in the back rear end 24b of boundary line 22c and the zone between the back edge 1d and is bonded on the first fin 21a at one.Should be pointed out that the second fin 21c be not bonded on the first fin 21a in the reserve area between front end 24a and rear end 24b.
Elastic component 22 is arranged to extending on the zone between front end 24a and the rear end 24b at least, thereby do not applying under the free state of external force to sanitary towel 1, elastic contractile force is according to front end 24a and rear end 24b mode close to each other are acted on the second fin 21c of liquid-tight layer 20.Thus, between front end 24a and rear end 24b, the first fin 21a and the second fin 21c raise from middle boundary line 22a, and forming length thus is the leakproof wall 21 of L1.
Herein, the front end 24a of preceding boundary line 22b is called as the preceding rising point of leakproof wall 21, and then the rear end 24b of boundary line 22c is called as the back rising point of leakproof wall 21.
In sanitary towel 1, the preceding rising point 24a of leakproof wall 21 is near the front end 12a of second compression section 12, just near the front end of resilient portion 6.The short lines distance that pro-raises between the front end 12a of the some 24a and second compression section 12 is 45mm or littler, is preferably 40mm or littler.
Similarly, the back rising point 24b of leakproof wall 21 is near the rear end 12b of second compression section 12, just near the rear end of resilient portion 6.The short lines distance that raises in the back between the rear end 12b of the some 24b and second compression section 12 is 45mm or littler, is preferably 30mm or littler.
Herein, the air line distance that raises between some 24b and the rear end 12b in the back is preferably less than the air line distance between pro-rising point 24a and the front end 12a.This is because when wearing sanitary towel 1, the back rising point 24b of close wearer's buttocks tends to more freely move.By making a back rising point 24b so be arranged near resilient portion 6 motion of a 24b that raises after can easily stoping.
As shown in Figure 1, sanitary towel 1 has from right side edge 1a and the outwardly directed alar part 18,18 of left side edge 1b.Alar part 18,18 is made of bottom 2 that bonds together and liquid-tight layer 20.
On the outer surface of bottom 2, be provided with the pressure sensitive adhesive adhesion coating (not shown) on the groin section that the middle body that is used for sanitary towel 1 is bonded to underwear, and the pressure sensitive adhesive adhesion coating (not shown) that is used for alar part 18,18 is bonded to the underwear groin section outside.
Fig. 3 shows sanitary towel 1 is connected to state on the groin section 25 of underwear.
Sanitary towel 1 medially is bonded on the inboard of groin section 25 by the pressure sensitive adhesive adhesion coating on the outer surface that is arranged on bottom 2.On the other hand, make the outside inflection of alar part 18,18 relative groin sections 25,, alar part 18,18 is bonded on the outside of groin section 25 by the pressure sensitive adhesive adhesion coating so that hold two lateral edges of groin section 25.
So that sanitary towel 1 when contacting with wearer's crotch, sanitary towel 1 tends to along the areal deformation of wearer crotch when wearing the underwear clothing.At this moment, because first compression section 11,11 and second compression section 12,12 can be used as flexible hinge, sanitary towel 1 can easily be out of shape so that its skin surface caves in, shown in the sectional view of Fig. 4.In addition, because sanitary towel also caves in so that front edge 1c and back edge 1d are close to each other along the longitudinal, raise to contact, as shown in Figure 4 from skin surface with wearer's crotch so be subjected to the leakproof wall 21,21 of vertical contractility of elastic component 22.
Herein because vertical contractility of elastic component 22 also acts on the sidepiece 7,7, sidepiece 7,7 tend to second compression section 12,12 as under the situation of flexible hinge in Fig. 3 inwardly and be bent upwards.Therefore, sidepiece 7,7 slight inclination ground raises, and right side edge 1a and left side edge 1b face wearer's health, as shown in Figure 4, thereby can easily prevent lateral leakage of menstrual blood by sidepiece 7,7 that tilts and the leakproof wall 21,21 that raises from sidepiece 7,7.
In addition, as shown in Figure 4, because sidepiece 7,7 is from second compression section 12,12 crotch 50 towards the wearer raise, so by containing side absorbed layer 4C, the sidepiece 7,7 of 4C is from supported underneath leakproof wall 21,21, thus can guarantee that leakproof wall 21,21 closely contacts with wearer's crotch.At this moment, because sidepiece 7,7 is positioned under the leakproof wall 21,21 and at half place of the thickness of the sanitary towel 1 of distortion, and outstanding resilient portion 6,6 is positioned at sidepiece 7,7 inboards, so leakproof wall 21,21 can with sidepiece 7, but 7 contact and contact with resilient portion 6,6 hardly.Therefore, though along the mobile menses of wearer's crotch attached on the leakproof wall 21,21, can prevent that also these menses and resilient portion 6,6 from contacting.As a result, owing to resilient portion 6,6 can be soaked hardly, so can prevent to damage their resilience.
In addition, the front and rear of sanitary towel 1 can be used as under the situation of flexible hinge crooked in transverse compression part 13,13, thereby contacts with mons pubes from transverse compression part 13 front portion forward, and contacts with buttocks from transverse compression part 13 rear portion backward.In addition, the front portion can be used as under the situation of flexible hinge at the compression section 14,14 that extends forward and be out of shape with consistent with mons pubes, and the rear portion can be at the compression section 15,15 that extends back as being out of shape with consistent with buttocks under the situation of flexible hinge.In addition, from forward anterior of transverse compression part 13 with from transverse compression part 13 rear portion backward, owing to there is the compression section 14 that extends forward that vertically is provided with in pairs, 14 and the compression section 15 that extends back, 15, so front and rear is enough twisted or distortion to bear firmly, thereby can easily make sanitary towel 1 forwardly with in the rear portion keep smooth.
When distance between the thigh 51,51 was narrowed down, transverse pressure F acted in groin section 25 and the sanitary towel 1 from thigh 51,51.This pressure F is used to make the narrowed width of sanitary towel 1, and acts on the resilient portion 6,6 as the active force towards longitudinal centre line Oy-Oy.
Because sanitary towel 1 has constant width,, thereby shortened width herein, so transversely the effect of reference line Ox-Ox is strong especially for pressure F.But, resilient portion 6 between first and second compression sections 11 and 12,6 have the shape of curve, and as shown in Figure 5, with resilient portion 6,6 along thigh 51, the curved surface setting of 51 inboards, to open the distance of constant along whole resilient portion 6,6 and thigh 51,51 clear widths.Therefore, pressure F acts on the whole length of resilient portion 6,6 equably, and can not produce big difference on active force.
Therefore, because pressure F acts on each part of hard resilient portion 6,6 equably,, but longitudinally distribute to act on the middle absorbent part 5 between the resilient portion 6,6 so pressure is not concentrated on the lateral reference line Ox-Ox.Therefore, the width of middle absorbent part 5 can shorten equably, and can not cause the part to become narrow especially.
In addition, when highdensity hard resilient portion 6,6 was close to each other, the middle absorbent part 5 that is arranged between them was pushed away by the way up towards the wearer, and is crushed in the crotch 50.Therefore, middle absorbent part 5 closely contacts with vaginal opening.In this state, resilient portion 6,6 is used for from supported underneath middle absorbent part 5, makes middle absorbent part 5 and vaginal opening keep closely contacting thus.
With the resilient layer 4B of resilient portion 6,6 with higher density, 4B has high transverse elasticity to absorbed layer by compression therein.Therefore, when thigh was opened when very wide in 51,51 minutes, middle absorbent part 5 can be owing to the resilience of resilient portion 6,6 easily along laterally recovering.And even sanitary towel 1 is twisted in the process of wearing, the sanitary towel of distortion also can easily recover owing to the resilience of resilient portion 6,6.Particularly because resilient portion 6,6 have constant width and along thigh 51,51 bendings, so when making thigh 51,51 when separately very wide, and the pressure F that acts on the resilient portion 6,6 can be for resilient portion 6, each part of 6 basically simultaneously and be released equably, thereby can make each part of middle absorbent part 5 recover width equably.
Should be understood that, preferably as shown in FIG. the bending of first compression section 11, second compression section 12 and resilient portion 6, so that make each resilient portion 6,6 various piece and thigh 51, the minimize variations of the distance between 51, thus make pressure F can be applied on the resilient portion 6,6 as far as possible equably, and when removing this pressure F, can discharge this compression as far as possible equably.But, as long as first compression section 11, second compression section 12 and resilient portion 6 at cross central line Ox-Ox place each other the most near and when their longitudinal extensions leave cross central line Ox-Ox extension leave longitudinal centre line Oy-Oy, just can obtain similar effects.Compression section 11,12 and resilient portion 6,6 can for example extend with one section round or oval arc, shape trapezoidal or " V " shape.First compression section 11 and second compression section 12 can extend with the shape of zigzag line or wave, if they transverse center according to line Ox-Ox place the most approaching each other and when their longitudinal extensions leave cross central line Ox-Ox extension leave longitudinal centre line Oy-Oy.
The menses of discharging from vaginal opening mainly are applied on the middle absorbent part 5 that closely contacts with vaginal opening, and pass top layer 3, are absorbed by middle absorbent layer 4A then.Because middle absorbent part 5 is by first compression section 11,11 and transverse compression part 13,13 institutes center on, so can prevent that easily menses are to external diffusion by these compression sections, thereby menses can be spread in middle absorbent part 5 and be partially absorbed by this, make full use of the liquid absorption capacity of middle absorbent layer 4A thus.
When high basic weight and low-density middle absorbent layer 4A absorption menses, the resilience of its opposing compression can variation.On the other hand, because the resilient layer 4B in resilient portion 6,6,4B is by high compression, so even they are soaked into by menses, their resilience also can be held.Therefore, even under the state that soaks that has applied menses to it, whenever thigh was opened when very wide in 51,51 minutes, middle absorbent part 5 just can be recovered its width.In addition, because middle absorbent part 5 is crushed on the vaginal opening owing to resilient portion 6,6, so even the menses that apply to middle absorbent layer 4A have destroyed the compression restorability, it also hardly can be spaced apart with vaginal opening.
In addition, as shown in Figure 4, when sanitary towel 1 during by transverse compression, resilient portion 6,6 is positioned at the both sides of middle absorbent part 5, and sidepiece 7,7 is positioned at their outside.Therefore, the surface of sidepiece 7,7 is difficult to directly contact with the surface of middle absorbent part 5.Therefore, absorbed menses are difficult to flow to sidepiece 7,7 in middle absorbent part 5, prevent the unfavorable diffusion of menses thus.In addition, even when menses during along the surperficial horizontal mobility of middle absorbent part 5, it also can be received and be stopped by resilient portion 6,6, prevents from thus to flow towards sidepiece 7,7.
Utilization can make the sanitary towel 1 of distortion return to its original state at once, particularly at the part place that is close to resilient portion 6,6 at right side and place, the left side resilient portion 6,6 that is provided with like this.Even after having absorbed menses, the sanitary towel 1 of distortion also can recover in the same old way.As previously mentioned, the preceding rising point 24a of leakproof wall 21 and back raise, and 24b is approaching with resilient portion 6 for point, and air line distance is set at 45mm or littler.Therefore, even wearing in the process distortion and when making raise some 24a, 24b near longitudinal centre line Oy-Oy, they also can easily return to its initial position after having discharged external force when sanitary towel 1.Therefore, can prevent that leakproof wall 21 from undesirable distortion taking place, in addition,, cover the surface of middle absorbent part 5 so can prevent leakproof wall 21,21 from falling owing to make the position stability of some 24a, 24b that raises.As a result, can improve the effect that prevents lateral leakage of menstrual blood by leakproof wall 21,21.
Herein, because first compression section 11, second compression section 12 and resilient portion 6 are towards longitudinal centre line Oy-Oy bending, the front end 12a of second compression section 12 and rear end 12b close easily raise some 24a and 24b, thus can utilize resilient portion 6 to come the position of easily stable raise a 24a and 24b.
In the embodiment depicted in fig. 1, the preceding some 24a that raises is positioned at the front of the front end 12a of second compression section 12, but should be understood that, this some 24a that raises can be between second compression section 12 and right side edge 1a, and perhaps a back rising point 24b can be between second compression section 12 and right side edge 1a.Herein, apart from being preferably 45mm or littler, more preferably be 25mm or littler at the short lines between some 24a or 24b and second compression section 12 of raising.
The preferred value of each several part below will be described.And in other embodiment that will describe subsequently, the part that preferably has with the first embodiment identical construction has similar value.Below, although absorbed layer is that the fiber of slurry constitutes by for example wrapping up in hydrophilic paper etc., the density of absorbed layer and the measurement of basic weight do not comprise hydrophilic paper etc.
Preferably, middle absorbent layer 4A has big liquid absorption capacity, so that can absorb menses fully in middle absorbent part 5.But also preferably, its soft-touch and so be rich in resilience is recovered its thickness thereby can work as to make from wearer's health to applying when thereon pressure discharges.
The preferred density of middle absorbent layer 4A is at 0.05-0.15g/cm 3Scope in.The preferred basic weight of middle absorbent layer 4A is at 500-1200g/m 2, be preferably in 500-1000g/m 2If they are set in the above-mentioned scope, then can obtain the vertically enough elasticity of compression of enough liquid absorption capacities and opposing.
Middle absorbent part 5 is W1 at the width at lateral reference line Ox-Ox place, and this width preferably in the scope of 15-50mm, is preferably in the scope of 20-40mm.First reason is that crotch's width of common women is approximately 30mm.Second reason be, as long as width W 1 is arranged in the above-mentioned scope, even sidepiece 7,7 and leakproof wall 21,21 fall towards longitudinal centre line Oy-Oy, also can keep exposing certain area on the surface of middle absorbent part 5, is used to accept menses.
The resilient layer 4B that is arranged in the resilient portion 6 has the density that is higher than middle absorbent layer 4A and side absorbed layer 4C, but the thickness of resilient portion 6 is not very little.More particularly, resilient portion 6 is so formed, that is, make its basic weight at 300-800g/m 2, preferably at 350-600g/m 2Absorbed layer be positioned at width W 4 for the position between first and second compression sections 11,12 of 1.5-3.5mm by compression and extruding, be increased to 0.1-0.25g/cm with the density that makes absorbed layer thus 3In addition, the shape of resilient portion 6 is made the outer surface that projects to top layer 3 with the thickness of the width W 2 of 3-10mm and 2-6mm from the outer surface of bottom 2.
Utilize this structure, can make the resilient portion 6,6 that is arranged between middle absorbent part 5 and the sidepiece 7,7 hard and very flexible.In addition, even when being soaked, can prevent that also their bulkiness and elasticity from reducing.
In middle absorbent part 5 and resilient portion 6,6, can between top layer 3 and bottom 2, a for example extra play of the non-woven fabric of synthetic fibers be set the absorbed layer with hydrophilic fibre, as described later.In this case, preferred density range is meant the density of the absorbed layer that does not comprise this non-woven fabric, and preferred basic weight is meant the basic weight of the absorbed layer that comprises this non-woven fabric.
The length of resilient portion 6,6 (size of measuring abreast with longitudinal centre line Oy-Oy) depends on the length of second compression section 12,12.If the length of resilient portion 6,6 is too short, then the width of middle absorbent part 5 can not be recovered fully; If length is long, the hardness of whole sanitary towel is excessively increased, thereby wearer's crotch is felt under the weather.The length of resilient portion 6,6 is preferably 40mm-100mm.But under as shown in figure 10 the situation that is used for extended type sanitary towel that use night or when blood volume is big for example, the length of resilient portion 6,6 can surpass 100mm.For example, when sanitary towel is its length when being approximately the extended type of 380mm, the upper limit of the length of resilient portion 6,6 is about 120mm.If this length surpasses 100mm (surpassing 120mm in king-size situation), it is hard that then sanitary towel 1 may make wearer's somatosensory.
The density of side absorbed layer 4C is at 0.05-0.15g/cm 3Scope in, this density is less than the density of resilient layer 4B, but be preferably with the density of middle absorbent layer 4A much at one.On the other hand, the basic weight of side absorbed layer 4C is lower than the basic weight of resilient layer 4B, for example is preferably at about 300-450g/m 2The width W 3 of side absorbed layer 4C preferably in the scope of 10-35mm, is preferably in the scope of 10-20mm.The upper limit of basic weight should not be limited to above-mentioned scope, but can be 600g/m under the situation of sanitary towel 2
In first and second compression sections 11,12 of compression section 10, preferably, make tight section, just the density of high density compressed part 10a is much higher than the density of middle absorbent layer 4A, resilient layer 4B and side absorbed layer 4C.In order to make resilient portion 6,6 can produce enough resiliences individually, need make the density of high density compressed part 10a be at least 0.3g/cm 3, and preferably at 0.5-1.5g/cm 3Scope in.Herein, the density of the intermediate density compression section 10b in will compression section 10 is set in the above-mentioned scope, so that be that resilient portion 6,6 provides enough elasticity.But, also preferably the density of intermediate density compression section 10b is set in the above-mentioned scope, so that make resilient portion 6,6 keep high density, and be convenient to about first compression section 11,11 and second compression section 12,12 folding.
Below use description to the preferred material of each several part.
For top layer 3, can use the bonding non-woven fabric of the hot blast method of passing through that is formed with the film of synthetic resin of a large amount of liquid by the hole, is made into netted film of synthetic resin or chemical fibre.In replacing embodiment, can use composite, wherein have the film of synthetic resin of liquid by the hole and be on the skin surface, and will place its below by the bonding non-woven fabric of hot blast method.In this case, film of synthetic resin is formed by the polyvinyl resin that contains as the titanium oxide of brightening agent, and form by shell/core pattern bi-component synthetic fiber by the bonding non-woven fabric of hot blast method, wherein core component is the polyethylene terephthalate (PET) that contains titanium oxide, and the shell component is polyethylene (PE), and heat fusing bonds together this shell/core pattern bi-component synthetic fiber by hot-air.
Top layer 3 also can use different non-woven fabrics, for example the non-woven fabric that is formed by spun laced process, spunbond non-woven fabric or the like.
Bottom 2 is liquid-tight gas-pervious layers, for example is formed with the polyethylene (PE) or polypropylene (PP) thin film of micropore.For example by in plastic sheeting, adding such as CaCO 3And BaSO 4Inorganic filler and stretch then, this micropore is suitably distributed on whole thin film to improve breathability.This thin film can have big thickness about 15-50 μ m.In replacing embodiment, can use wherein the material of laminated thermoplastic resin on non-woven fabric.
For example groundwood pulp, mercerising slurry or crosslinked slurry form by gathering the fine hair slurry for the first absorbed layer 4a, the second absorbed layer 4b and the 3rd absorbed layer 4c.After stacked on top of each other, absorbed layer 4a, 4b and 4c are wrapped in the hydrophilic paper fully.This slurry can with synthetic absorbable polymer for example polyacrylate, polyacrylamide and maleic anhydride or with natural absorbable polymer for example starch and cellulose mix.In replacing embodiment, wherein can contain the absorbable polymer of the form that is layer.
Can be to be under the situation of absorbable polymer of form of layer particularly, when slurry is soaked by absorbing menses, can improve the adhesive strength between the slurry, improve the hardness of resilient portion 6,6 thus containing in the resilient portion 6,6.
Liquid-tight layer 20 for being used to form leakproof wall 21 can use spunbond non-woven fabric, melt and spray non-woven fabric or its laminated product.Preferably, make layer 20 through hydrophobic treatment.
In the suitable part except compression section 10, bottom 2, top layer 3, absorbed layer 4 and liquid-tight layer 20 can be bonded to each other by binding agent.
Other embodiment of the present invention below will be described.Hereinafter, will be by representing with common Reference numeral to omit for having the detailed description of the part of same structure with first embodiment.
Fig. 6 is the half-section on figure of expression according to the 1A of sanitary towel of second embodiment of the invention.
In this embodiment, the non-woven fabric 8 of synthetic fibers is laid on absorbed layer 4A and the 4B, with from central absorption portion 5 extend throughs first compression section 11,11 to resilient portion.This non-woven fabric can be for example by the bonding non-woven fabric of hot blast method.
The non-woven fabric bonding by the hot blast method can so form, promptly, making core component wherein is that polypropylene (PP) and shell component are that (for example its fineness is 4.4dtex for the eccentric shell/core pattern bi-component synthetic fiber of polyethylene (PE), and length is 50mm) handled one minute with 135 degrees centigrade hot air, wherein fiber is coated with hydrophilic lubricant.Be lower than the density of middle absorbent layer 4A and top layer 3 by the density of the bonding non-woven fabric of hot blast method, and at 0.005-0.3g/cm 3Scope in.Thickness by the bonding non-woven fabric of hot blast method is 0.5-2mm, and is folded twice or three times and uses.
In middle absorbent part 5, because the non-woven fabric of hot blast method is arranged between middle absorbent layer 4A and the top layer 3, so the menses that are applied in middle absorbent part 5 on the top layer 3 can pass top layer 3, and owing to the weight of himself is passed by the bonding non-woven fabric of hot blast method by the hole between the fiber, absorb by middle absorbent layer 4A then, wherein middle absorbent layer 4A formed by the hydrophilic fibre of for example slurry or the mixture of hydrophilic fibre and absorbable polymer, and is wrapped in the hydrophilic paper.Therefore, can improve absorbance, and top layer 3 is kept dry easily the menses that apply repeatedly.In addition owing to have high elasticity by the bonding non-woven fabric of hot blast method, so when central absorption portion 5 by transverse compression when shown in Figure 4 and 5, reducing its width, middle absorbent part 5 self can produce some horizontal resiliences.
At resilient portion 6, in 6, to remain between bottom 2 and the top layer 3 by the bonding non-woven fabric of hot blast method, simultaneously with resilient layer 4B together by compression, this resilient layer is to be wrapped in the hydrophilic paper by the layer with pulp layer or slurry and absorbable polymer to form.Therefore, can further improve the elasticity of resilient portion 6,6.
In first compression section 11, the non-woven fabric bonding by the hot blast method is heated with absorbed layer under pressure, thereby makes the synthetic fibers heat fusing that constitutes by the bonding non-woven fabric of hot blast method.Therefore, first compression section 11 can be retained as state by compression, and can not cause first compression section 11 when contacting with menses from being compressed the problem with fixed recovering state.Therefore, the density in resilient portion 6 inside can remain very high.
More preferably, also in second compression section 12, exist by the bonding non-woven fabric of hot blast method.
Herein, the non-woven fabric of synthetic fibers should not be construed as limited to by the bonding non-woven fabric of hot blast method, can in resilient portion 6, first compression section 11 and second compression section 12 different non-woven fabrics be set, for example spunbond non-woven fabric melts and sprays non-woven fabric etc.
Fig. 7 is the half-section on figure of expression according to the 1B of sanitary towel of third embodiment of the invention.
The structure of the 1B of sanitary towel and shown in Figure 1 similar, except with reinforcement 23 and resilient layer 4B, 4B is arranged in the resilient portion 6,6 together.Reinforcement 23 has than higher density of middle absorbent layer 4A and side absorbed layer 4C and the stiffness of Geng Gao, and such as being the foamed resin material of foaming polyurethane resin for example, wherein utilize binding agent with the non-woven fabric that forms by the air lay method that slurry and synthetic fibers heat fusing are bonded together or are fixed together, perhaps be the natural or synthetic rubber of rod or plate shape.Utilize the reinforcement 23 that is provided with like this, can further improve the elasticity of resilient portion 6.
Herein, the foaming polyurethane resin that is used for reinforcement 23 can obtain hydrophilic treated, and is provided in extension continuously in middle absorbent part 5, first compression section 11, second compression section 12 and the resilient portion 6.
In the present invention, also can from resilient portion 6,6, remove for example absorbed layer of slurry, between bottom 2 and top layer 3, only to stay reinforcement 23.
Fig. 8 A is the vertical view of expression according to the 1C of sanitary towel of four embodiment of the invention.
In the 1C of sanitary towel, according to Fig. 1 in the similar patterns of compression section 10 form compression section 10B.This compression section 10B comprises the first compression section 11B, 11B, the second compression section 12B, 12B, transverse compression part 13B, 13B, the compression section 14B that extends forward, 14B and the compression section 15B that extends back, 15B.But compression section 10B is not made into the compressed grooves of extension continuously, but is made into along this pattern according to the spaced apart compression point of separating.
So form compression section 10B, that is, top layer 3 and absorbed layer 4 only are heated to have high density under point is in the situation of pressurized.Should be pointed out that when utilizing embossing to convex to form these compression point, the position between adjacent compression point is neither heated also do not pressurize with dot pattern.
In the 1C of sanitary towel, be made into the first compression section 11B of compression point in a row, the 11B and the second compression section 12B form highdensity resilient portion 6B, 6B between the 12B.At resilient portion 6B, among the 6B, a little less than the restraining forces that causes because of compression section 11B that forms by compression point and 12B, thus only by form compression section for example the absorbed layer of slurry compress and limitation arranged to have high density.Therefore, in this embodiment, hope waits compression molded in advance slurry and is used for resilient portion 6B, the resilient layer 4B among the 6B.Also wish to use reinforcement 23 as shown in Figure 7.
Compression point can be circular, and shown in Fig. 8 A and 8B, perhaps compression point can be the short-term shape of extend longitudinally, shown in Fig. 8 C.Preferably, constituting the compression point of the first compression section 11B and the compression point of the formation second compression section 12B interlocks, thereby the mid portion of not being compressed of leaving between the adjacent compression point of the first compression section 11B and not heating not can with the adjacent compression point of the second compression section 12B between leave be not compressed and the mid portion of not heating transversely (directions X) consistent, shown in Fig. 8 B and 8C.
Owing to make compression point so staggered, the menses on being applied to middle absorbent part 5 are during along top layer 3 and absorbed layer horizontal proliferation, and compression point can work the complications resistance leakage effect that prevents the menses horizontal mobility, prevents that effectively menses from flowing to sidepiece 7,7.
Herein, a compressed grooves that can be made into similar compression section shown in Figure 1 10 in first and second compression sections, and another can be made as a few row's compression point is as shown in Fig. 8 A, 8B and the 8C.For example, first compression section, transverse compression part, the compression section that extends forward and the compression section that extends back all can be made compressed grooves, and only second compression section be made a few row's compression point.Also second compression section can be made compressed grooves, and first compression section is made for a few row's compression point in the location in the face of second compression section on the whole or only.In these situations, transverse compression part, the compression section that extends forward and the compression section that extends back can be formed compressed grooves or a few row's compression point.
But preferably, first compression section of more close longitudinal centre line Oy-Oy is made compressed grooves, and second compression section is made for a few row's compression point.In this case, can prevent positively that the menses that are applied on the middle absorbent part 5 from flowing to resilient portion 6,6.
As previously mentioned, be formed at compression section under the situation of a few row's compression point, because the not compression section between adjacent compression point is crooked along the longitudinal easily, so bending easily of the front and rear of sanitary towel and distortion are to meet abdominal part and buttocks respectively.Particularly when compression point is interlocked, can strengthen bending effect and can not improve the bending stifiness of compression section.
Under the situation that forms short-term shape compression point, shown in Fig. 8 C, preferably making the length of this short-term shape compression point approximately is 10-20mm, and to make the length of the mid portion (not compression section) between short-term shape compression point adjacent one another are along the longitudinal approximately be 5-10mm.Can alternately form each short-term shape compression point by making high density compressed part 10a and intermediate density compression section 10b herein.Compression section shown in Figure 1 can be located to interrupt at an arbitrary position.
With reference to figure 9-Figure 13, below other embodiments will be described.Compression section in first to fourth embodiment forms according to same or similar pattern, but the compression section in the embodiment of Fig. 9-shown in Figure 13 forms according to the pattern different with first to fourth embodiment.
But,, certainly select to adopt being configured in the embodiment shown in Fig. 9-13 shown in first to fourth embodiment about the structure rather than the pattern of compression section.Therefore following will only describing to the difference on the pattern of compression section, and by using the Reference numeral identical with each embodiment to represent to omit the detailed description to other parts.
Fig. 9 is the vertical view of expression according to the 1E of sanitary towel of fifth embodiment of the invention.
The compression section 10E that is provided with in the 1E of sanitary towel shown in Figure 9 does not comprise transverse compression part 13 shown in Figure 1,13, thus the compression section 14E that extends forward, 14E and the compression section 15E that extends back, 15E is from the first compression section 11E, and 11E extends forward and backward continuously with the shape of camber line.At the first compression section 11E, the zone between the 11E is a middle absorbent part 5.The second compression section 12E, 12E is arranged on the outside of middle absorbent part 5.
The second compression section 12E, 12E also is formed arc shape, and with the first compression section 11E, 11E is a constant distance at interval.
And in this embodiment, resilient portion 6,6 can show sufficient elasticity under the deformation state shown in the Figure 4 and 5.In addition, because the menses that are applied on the absorbed layer can be from being positioned at the first compression section 11E, middle absorbent part 5 between the 11E diffuses to the compression section 14E that extends forward, part between the 14E and the compression section 15E that is extending back, part between the 15E, so when applying a large amount of menses, the length of the 1E of sanitary towel can be fully utilized.
Figure 10 is the vertical view of expression according to the 1F of sanitary towel of sixth embodiment of the invention.
The 1F of sanitary towel is a strip, and its width between right side edge 1a and left side edge 1b increases at its place, rear portion, so that so-called buttocks protection to be provided.
In this embodiment, the first back compression section 15F, 15F is from the first compression section 11F, and 11F extends back according to the mode that moves closer to each other towards back edge 1d, and is connected to each other in back edge 1d inboard by the connection compression section 17F of curved shape.
And, at the first back compression section 15F, the 15F arranged outside second back compression section 18F, 18F, they are connected to each other in back edge 1d inboard by the connection compression section 19F of curved shape.The second back compression section 18F, 18F also is provided with the approximating gradually part towards back edge 1d.
In this embodiment, by the first compression section 11F, 11F and transverse compression part 13F institute region surrounded are middle absorbent part 5F, and by the first back compression section 15F, 15F is back middle absorbent part 5G with being connected compression section 17F institute region surrounded.Abundant middle absorbent layer 4A is between top layer 3 and the bottom 2, extend continuously on whole middle absorbent part 5F and back middle absorbent part 5G.In middle absorbent part 5F and back middle absorbent part 5G, density and the basic weight of middle absorbent layer 4A are basic identical.
In addition, at the first back compression section 15F, the 15F and the second back compression section 18F, back resilient portion 6F is set between the 18F, 6F in this back resilient portion, is higher than the density of the middle absorbent layer 4A in the middle absorbent part 5G of back in the density of the absorbed layer (resilient layer) between top layer 3 and the bottom 2.Equal or be slightly less than density in resilient portion 6,6 in the density of the absorbed layer of back in the resilient portion 6,6, and be higher than the density of middle absorbent layer 4A.
As shown in figure 10, at the first back compression section 15F, it is crooked that the 15F and the first compression section 11F, the boundary member between the 11F leave longitudinal centre line Oy-Oy ground, thereby middle absorbent layer 4A widened in these boundary portion offices.The first back compression section 15F, 15F is closer to each other gradually when they extend from boundary member towards back edge 1d, simultaneously, and the first compression section 11F, 11F is also closer to each other gradually when horizontal reference line Ox-Ox extends from boundary member at them.
The leakproof wall 21,21 that on the right side of the skin surface of the 1F of sanitary towel and left side, liquid- tight layer 20,20 is set and forms by this liquid-tight layer 20,20.This leakproof wall 21,21 has except size and leakproof wall identical construction shown in Figure 1.Bonding region in the first fin 21a and not the boundary line between the bonding region comprise intermediate boundary lines 22a, preceding boundary line 22b and back boundary line 22c, wherein 24a represents the preceding rising point of leakproof wall 21, and 24b represents the back rising point of leakproof wall 21.
And, in this embodiment, the front end of preceding rising point 24a and resilient portion 6 is approaching, and the short lines distance between the front end 12a of the some 24a and the second compression section 12F that raises is 45mm or littler, be preferably 40mm or littler, be preferably 25mm or littler.
Similarly, 24b is approaching with the front end of back resilient portion 6F for back rising point, and the distance between the front end 18G of a 24b and the second back compression section 18F that raises is 45mm or littler.In the situation of the 1F of sanitary towel shown in Figure 10, this sanitary towel head, and be suitable for using night owing to having the first back compression section 15F, the second back compression section 18F and buttocks protection, but the buttocks protection that is intended to contact with buttocks is twisted easily or is out of shape.Therefore, the short lines distance between the front end 18G of the back rising point 24b of leakproof wall 21 and the second back compression section 18F is preferably 20mm or littler.
When on the inboard of the groin section 25 that will the long 1F of sanitary towel be fixed to underwear and when dressing, lateral reference line Ox-Ox can cooperate the roughly longitudinal center of vaginal opening.Therefore, when near horizontal reference line Ox-Ox, exerting pressure F from thigh, the 1F of sanitary towel that is in this part can deform shown in Figure 4 and 5, then, in the time of pressure relief F, the 1F of sanitary towel can return to its original state from the deformation state shown in the Figure 4 and 5 owing to the elasticity of resilient portion 6,6.
Herein, the rear portion of the 1F of sanitary towel contacts with buttocks, can be engaged in the gluteal fold from middle absorbent part 5G then.Because back resilient portion 6F is set on the both sides of back middle absorbent part 5G, 6F, so even the 1F of sanitary towel is subjected to the excessive pressure that causes because of the change of wearer position (attitude) from wearer's body or underwear, the rear portion also is difficult to distortion, perhaps can after distortion, recover easily, thereby can guarantee that back middle absorbent part 5G closely contacts with wearer's health.
In addition, because the preceding rising point 24a of leakproof wall 21 is near resilient portion 6, and the back raises some 24b near the resilient portion 6F of back, so in the process of wearing, the position of satisfying stable rising point 24a and 24b prevents that thus leakproof wall 21 is distorted or drops on middle absorbent part 5F and the back middle absorbent part 5G.
The 1F of sanitary towel is worn together with sweat pants and in this sweat pants from the groin section to the back be provided with elastic component with the situation of extending along wearer's gluteal fold, back middle absorbent part 5G is pushed in the gluteal fold because of the power of this elastic component.At this moment, since the first back compression section 15F, the 15F and the second back compression section 18F, and 18F is set on the both sides of back middle absorbent part 5G, and can be used separately as flexible hinge, so the back middle absorbent part 5G that is subjected to from the thrust of underwear is closely contacted with buttocks.
Figure 11 is the vertical view of expression according to the 1G of sanitary towel of seventh embodiment of the invention.
Although be provided with the buttocks protection at its rear portion, the longitudinal size of the 1G of sanitary towel of Figure 11 is slightly shorter than the longitudinal size of the 1F of sanitary towel shown in Figure 10.
The 1G of sanitary towel has compression section 10G, and this compression section 10G is according to forming with compression section 10 essentially identical patterns shown in Figure 10, but makes the second compression section 12F, and 12F is continuously to the second back compression section 18F, 18F.And in the 1G of this sanitary towel, because resilient portion 6,6 is arranged on the both sides of middle absorbent part 5F, so can produce the enough elastic force of opposing dimensional deformation power.
Herein, the air line distance between the front end 12a of the preceding rising point 24a of leakproof wall 21 and the second compression section 12F is 45mm or littler, and preferably 40mm or littler is more preferably 25mm or littler.The short lines distance that raises in the back between the some 24b and the second back compression section 18F is 45mm or littler also, preferably 25mm or littler.But, in the embodiment of Figure 11, that is, raising some 24b between the second back compression section 18F and right side edge 1a the time, this air line distance can significantly be decreased to for example 15mm or littler.
Therefore, can prevent 21 distortions of leakproof wall or whereabouts thus positively by back resilient portion 6F enhancing each raise a 24a and 24b, particularly a back rising point 24b.
Figure 12 is the vertical view of expression according to the 1H of sanitary towel of eighth embodiment of the invention.
The similar of the structure of the 1H of sanitary towel and sanitary towel shown in Figure 11, but alar part 18 removed.
The 1H of sanitary towel of Figure 12 has compression section 10H, it comprises the first compression section 11H that extends with arc shape, 11H and the second compression section 12H that also extends in the former outside with arc shape, 12H, the first compression section 11H wherein, the 11H and the second compression section 12H, 12H separates constant distance.At the first compression section 11H, the zone between the 11H is middle absorbent part 5H, and at the first compression section 11H, the 11H and the second compression section 12H, the zone between the 12H is resilient portion 6H, 6H.
The second compression section 12H, 12H is by being arranged on the transverse compression part 13H at front and rear place, and 13H is connected to each other.Therefore, the first compression section 11H, 11H and resilient portion 6H, 6H are positioned at by the second compression section 12H, and 12H and transverse compression part 13H are in the 13H institute region surrounded.
In addition, with from the second compression section 12H, the mode that 12H extends continuously forms the compression section 14H that extends forward, 14H and the compression section 15H that extends back, 15H.
And, in the 1H of sanitary towel, resilient portion 6H, 6H can produce enough transverse elasticities.
In this embodiment, because by the second compression section 12H, 12H and transverse compression part 13H, 13H institute region surrounded has the bigger area than middle absorbent part 5H, and it is bigger therefore to make institute center on regional liquid absorption capacity.In addition, be positioned at the first compression section 11H owing to be applied to, the 11H and the second compression section 12H, the resilient portion 6H between the 12H, the diffusion of the menses on the 6H can be limited in the region surrounded, so can prevent easily that menses from spilling from the 1H of sanitary towel.
Figure 13 is the vertical view of expression according to the 1J of sanitary towel of ninth embodiment of the invention.
The 1J of sanitary towel has its pattern and compares the compression section 10J that slightly changes with the compression section of the 1E of sanitary towel shown in Figure 9.In this embodiment, the compression section 14J of Yan Shening forward, 14J and the compression section 15J that extends back, 15J are from the second compression section 12J, and 12J extends forward and backward continuously.On the other hand, the first compression section 11J, 11J are set in place in the second compression section 12J, on the zone between the 12J.At the first compression section 11J, the zone between the 11J is middle absorbent part 5J.
And in this embodiment, by resilient portion 6J, the effect of 6J can produce the enough horizontal elastic force of opposing compression.In addition, owing on the scope of the zone in the middle absorbent part 5J outside, be positioned at the second compression section 12J in along the longitudinal length, 12J, the compression section 14J that extends forward, 14J and the compression section 15J that extends back, between the 15J, so attached to resilient portion 6J, the menses on the 6J can improve the effect that prevents side leakage thus along the longitudinal diffusion of the 1J of sanitary towel.
Below explanation is used to make the method for sanitary towel.
The method of the sanitary towel 1 shown in shop drawings 1 and Fig. 2 A and the 2B below will be described, but pattern that can be by changing compression section or change the material that will be set between first compression section 11 and second compression section 12 and make sanitary towel in a comparable manner according to other embodiment.
In the manufacture method of sanitary towel 1, at first that absorbed layer 4 and top layer 3 is stacked on top of each other and randomly be bonded to each other.Then, compel this stacked from top layer 3 one side pressures, form compression section 10 thus with pressing element with embossed pattern.Subsequently, bottom 2 is laid and is bonded on stacked.Can only carry out embossing herein, and hold it in then between bottom 2 and the top layer 3 absorbed layer 4.Can carry out embossing from outer surface (underwear surface) side of absorbed layer 4 or from both sides.But, will illustrate below from a side of top layer 3 stacked situation of carrying out embossing to absorbed layer 4 and top layer 3.
Figure 14 A is the plane graph of the right side part of the pressing element 100 represented from its pressing surfaces one side, and Figure 14 B is the sectional view along the line B-B intercepting of Figure 14 A.
Pressing element 100 has embossing projection 110, and its pattern can be transferred on as compression section 10 shown in Figure 1 stacked.In Figure 14 A, shown only is a near part that forms the embossing projection 110 of first and second compression sections 11 and 12 the lateral reference line Ox-Ox of Fig. 1.
In Figure 14 A and 14B, on the left side of the shown right side of embossing projection 110 part, be provided for first base portion 115, and on the right side of this right side part, be provided for second base portion 117 in the face of sidepiece 7 in the face of the middle absorbent part 5 of sanitary towel 1.Herein, represent by D2 from the degree of depth of top to the first base portion 115 of embossing projection 110, and represent with D3 by the degree of depth of this top to the second base portion 117.Depth D 2 and D3 can equate, perhaps can make first base portion 115 darker, because it will be used in the face of relative thicker middle absorbent part 5.
Figure 14 A and 14B show first projection 111 that is used to form first compression section 11 and second projection 112 that is used to form second compression section 12, as shown in Figure 14B.Between first projection, 111 and second projection 112, be formed with the groove 116 that is used at the compression of the position between first compression section 11 and second compression section 12 absorbed layer.In this embodiment, resilient portion 6 is formed by groove 116.Little more a lot of from the depth D 1 of top to the bottom of groove 116 than depth D 2 and D3.
First projection 111 has pressures partially 111a at its end, and forms the inclined surface 111b that tilts to leave the top, 111b in its both sides.Similarly, second projection 112 has pressures partially 112a at its end, and the inclined surface 112b that forms according to the same manner, 112b.Herein, inclined surface 111b and 112b can be and successive steep slope, the bottom of groove 116.
Along pressures partially 111a and 112a, the pressing surfaces 110a that is used to form high density compressed part 10a replaces with the shallow trench 110b that is used to form intermediate density compression section 10b.Pressing surfaces 110a forms according to the pattern identical with intermediate density compression section 10b with high density compressed part 10a with shallow trench 110b.
On the other hand, so form being used to form the projection of the part of not faced by second compression section 12 shown in Figure 1 of first compression section 11, the projection that is used to form transverse compression part 13, the projection that is used to form the projection of the compression section 14 that extends forward and is used to form the compression section 15 that extends back, promptly, only first projection 111 raises from first base portion 115 and second base portion 117, and do not make second projection 112 shown in Figure 14 A and 14B with first projection 111 side by side.
Make absorbed layer 4 and top layer 3 stacked on top of each other and randomly be bonded to each other after, the pressing element 100 of Figure 14 A and 14B is applied on the surface of top layer 3, another pressing element that will have smooth surface simultaneously is applied on the outer surface of absorbed layer 4, thereby oppresses absorbed layer 4 and top layer 3 by two pressing elements.Herein, if necessary, pressing element can be heated and be used for pressurization.As a result, formation compression section 10 as shown in Figure 1 in stacked.
At this moment because absorbed layer 4 is that the groove 116 of D1 is exerted pressure by the degree of depth, so absorbed layer in the position between first compression section 11 and second compression section 12 by high compression.Herein, the absorbed layer of high compression is limited between first compression section 11 and second compression section 12 by top layer 3.
On the other hand, middle absorbent part 5 basically can be by 115 compressings of first base portion or hardly by its compressing.Similarly, sidepiece 7 basically can be by 117 compressings of second base portion or hardly by its compressing.Therefore, absorbed layer can be in the position between first compression section 11 and second compression section 12 by high compression, to have than the obvious higher density of the density in middle absorbent part 5 and sidepiece 7.
In the embodiment in front, the absorbed layer of high compression is resilient layer 4B.The absorbed layer of the high compression that forms between compression section 11 and 12 can be not only as resilient layer 4B, is used for from supported underneath middle absorbent part 5 and supporting member that itself and vaginal opening are closely contacted but also can be used as the deformation state following time that is in Fig. 4 in sanitary towel 1.
Should be pointed out that pressing element 100 and the pressing element with smooth surface can be configured to the surface texture that faces with each other of roller or smooth pressing element.Utilize the groove 116 that so is provided with, as shown in Figure 8, absorbed layer can be in the position between the first compression section 11B that is being formed by compression point and the second compression section 12B by high compression.
Although shown and described the present invention according to its exemplary, but those skilled in the art will appreciate that and can be under the premise without departing from the spirit and scope of the present invention carry out aforesaid and various other change, omission and interpolation therein or to it.Therefore, the present invention is appreciated that the specific embodiment that is not limited to propose above, but is included in respect to included scope of the feature that proposes in the appended claims and all possible embodiment in its equivalent.
Industrial applicibility
According to the present invention, as previously mentioned, when releasing is applied to transverse pressure on the middle absorbent part, can improve the horizontal recovery capability of middle absorbent part. In addition, this absorbent commodity can easily recover as twisting from other variation. Therefore, can remain and the drainage part close contact of wearer's body, prevent from thus discharging liquid generation side leakage.

Claims (2)

1. method that is used to make absorbent commodity, this absorbent commodity comprises: the top layer of the saturating liquid on skin surface (3); Bottom on garment surface (2); And the absorbed layer between top layer and bottom (4), wherein make absorbed layer at least with compressed first compression section of top layer (11) and second compression section (12) longitudinal extension along this absorbent commodity, this first compression section is provided with symmetrically with respect to the longitudinal centre line (Oy-Oy) of this absorbent commodity, second compression section is provided with symmetrically with respect to longitudinal centre line, and outwards separate with first compression section, this method comprises:
The step of utilizing pressing element (100) at least absorbed layer to be pressurizeed from skin surface, this pressing element has first projection (111) that is separated from each other that is used to form first compression section and is arranged on the first projection outside and is used to form second projection (112) of second compression section, wherein
Pressing element has: groove (116), and it forms respectively between every pair of first and second adjacent projectioies and has since first degree of depth (D1) at the top of first projection; First base portion (115) that between first projection, forms with second degree of depth (D2); And second base portion (117) that forms in the first projection outside with the 3rd degree of depth (D3), wherein first degree of depth is less than second degree of depth and less than the 3rd degree of depth, thereby utilizes groove to make absorbed layer be subjected to the compression bigger than the position of facing at first and second base portions in the position between first and second compression sections; And
Absorbed layer laid and is bonded in the step on the bottom.
2. the method that is used to make absorbent commodity as claimed in claim 1 is characterized in that absorbent commodity is not subjected to the compressing of first and second base portions.
CN2006101494911A 2002-09-09 2003-09-08 Absorbent article with resilient portion and method for manufacturing the same Expired - Lifetime CN1961851B (en)

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