CN1703182A - Elongated absorbent article - Google Patents

Elongated absorbent article Download PDF

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Publication number
CN1703182A
CN1703182A CNA2003801011304A CN200380101130A CN1703182A CN 1703182 A CN1703182 A CN 1703182A CN A2003801011304 A CNA2003801011304 A CN A2003801011304A CN 200380101130 A CN200380101130 A CN 200380101130A CN 1703182 A CN1703182 A CN 1703182A
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CN
China
Prior art keywords
mentioned
top flat
place ahead
embossed portion
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA2003801011304A
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Chinese (zh)
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CN1303960C (en
Inventor
黑田贤一郎
工藤淳
木下正隆
深山拓也
田村龙也
小松慎平
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Unicharm Corp
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Unicharm Corp
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Publication date
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Publication of CN1703182A publication Critical patent/CN1703182A/en
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Publication of CN1303960C publication Critical patent/CN1303960C/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
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations

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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

There is disclosed an elongated absorbent article wherein a central region (20) consisting of a front portion (20A) and a rear portion (20B) has distributed therein liquid-permeable through holes (25) and embossed spots (26). The pore density expressed by (the sum total of the areas occupied by the liquid-permeable through holes (25) in the front portion (20A) / the area of the front portion (20A)) is greater than the pore density that is (the sum total of the areas occupied by the liquid-permeable through holes (25) in the rear portion (20B) / the area of the rear portion (20B)), and the emboss density expressed by (the sum total of the areas occupied by the embossed spots (26) in the rear portion (20B) / the area of the rear portion (20B)) is greater than the emboss density that is (the sum total of the areas occupied by the emboss spots (26) in the front portion (20A) / the area of the front portion (20A)).

Description

The absorbent commodity of lengthwise
The application advocates following priority and proposes, and this priority is according to the Japanese patent application of December in 2002 application on the 5th 2002-354181 number.This illustrates that a described part quotes the described content of above-mentioned Japanese patent application.
Technical field
The present invention relates to be suitable for to absorb the absorbent commodity of menses of excreting from female sexual organ etc., particularly relate to the absorbent commodity of covering from the vaginal orifice of user health to the lengthwise of buttocks.
Background technology
Absorption is the top flat with permeability for liquids, the egative film and the liquid absorption layer of liquid impermeability from the general structure of the absorbent commodity of the excretory menses of female sexual organ; Top flat is positioned at its skin-side surface; Egative film is positioned at garment side surface; Liquid absorption layer is between above-mentioned top flat and egative film, and usually, above-mentioned egative film uses with the state of the crotch cloth inner face that is bonded in underwear by the pressure-sensitive adhesive linkage.
This absorbent commodity requires to have following function, that is, collect the menses drained in its skin-side surface reliably, prevent that liquid from leaking from absorbent commodity side leakage and back.
The absorbent commodity requirement of using during particularly the women in menstruation go to bed, prevent menses laterally spilling from absorbent commodity, and, make health along user, will be from anus towards gluteal fold effusive menses or will outwards not spill by rearward mobile menses along its skin-side surface of absorbent commodity.Therefore, open 2001-95842 number and the spy opens as described in 2001-129018 number as the spy, the absorbent commodity that h.d. uses form than use by day vertically longer, can cover vast scope in this its skin-side surface from the mons pubes in the place ahead of vaginal orifice to the buttocks at the more rear of anus.
From facing to the part of vaginal orifice until on the vast scope facing to the part of anus or gluteal fold, the top flat that the absorbent commodity of above-mentioned lengthwise uses the liquid infiltration hole to distribute equably more.For example, in vast scope, the resin film that non-woven fabrics that top flat uses the liquid infiltration hole to distribute equably to form or liquid infiltration hole distribute equably.
But, because above-mentioned non-woven fabrics forms many liquid infiltration hole, so its surperficial frictional strength reduces, therefore, if change owing to body gesture such as stand up, big masterpiece is used for to the rear part of being clamped by gluteal fold, the then fibre pick on every side in liquid infiltration hole, and then might break from generation around the liquid infiltration hole.
In addition, in the situation of the above-mentioned resin film that use to form the liquid infiltration hole, under the not only thin but also soft situation of this resin film because the variation of above-mentioned posture, with the part of anus or gluteal fold driving fit on, on top flat, produce fold easily.Therefore, as mentioned above, use under the situation of thin resin, utilize between hot-melt adhesive adhering resin thin film and the layer below it, can retrain resin film on the layer below.But above-mentioned hot-melt adhesive hinders menses to soak into to its lower floor from top flat.
Promptly, in the absorbent commodity that covers the lengthwise from the vaginal orifice to the gluteal fold, facing toward vagina, accepting on the place ahead part of a large amount of menses for the moment, require rapidly menses to be led liquid absorption layer, on the one hand, what require facing to the rear part of anus or gluteal fold is not that liquid absorbs rapidly, but the effect that retains a spot of menses, do not spill to the outside.Part further requires to prevent the fluffing that causes by the compression in the gluteal fold or with the friction of buttocks or breaks in the wings, perhaps stops fold to produce the durability or the bond strength of degree.Like this, be required the top flat of the various parts of difference in functionality for covering, making the liquid infiltration hole is not optimum structure above being evenly distributed in.
The present invention produces in view of above-mentioned existing problem.Therefore, the purpose of this invention is to provide following absorbent commodity, promptly, can realize the rapidity of menses infiltration facing on the place ahead part of vaginal orifice, facing on the rear part of gluteal fold, can improve the function that stops the menses leakage and further improve surface strength and bond strength.
Summary of the invention
In a first aspect of the present invention, a kind of absorbent commodity of lengthwise is provided, have its skin-side surface and garment side surface, have top flat, at the egative film and the liquid absorption layer between above-mentioned top flat and egative film of garment side surface in the permeability for liquids of its skin-side surface
The compression groove that liquid absorption layer and top flat are compressed is together extended setting symmetrically by the longitudinal centre line of relative absorbent commodity, forms the middle section of lengthwise between it, and above-mentioned middle section is made of the place ahead part and rear part,
At above-mentioned middle section, on the non-woven fabrics that forms top flat, form the embossed portion of liquid infiltration hole and point-like; The liquid infiltration hole connects above-mentioned top flat at least; The embossed portion of point-like is compressed above-mentioned top flat at least,
Be higher than the perforate density of (the area summation that the liquid infiltration hole of rear part is occupied)/(area of rear part) with the perforate density of (the area summation that the liquid infiltration hole of the place ahead part is occupied)/(area of the place ahead part) expression, be higher than the embossing density of (the area summation that the embossed portion of the place ahead part is occupied)/(area of the place ahead part) with the embossing density of (the area summation that the embossed portion of rear part is occupied)/(area of rear part) expression.
The absorbent commodity of this a first aspect of the present invention since top flat form by non-woven fabrics, therefore, with the contiguous sense of user health be soft.Owing to the part that forms the liquid infiltration hole on the non-woven fabrics is that menses fall by deadweight and pass through in the aforesaid liquid permeability hole, therefore, menses can rapid permeability.On the one hand, on the embossed portion that is formed on the non-woven fabrics, fibre density is quite high, can be by capillarity with the powerful suction of menses.Though promptly the liquid infiltration hole attracts a little less than the strength of menses, the infiltration of menses is rapid, though the seepage velocity of embossed portion menses is slow, attracts the strength of menses strong.
By on the part of the place ahead of above-mentioned middle section, forming many liquid infiltration hole, can will shift to liquid absorption layer in short time from the excretory menses of vaginal orifice, on the part, can stop from front part with embossed portion and divide the next menses of little by little transfer, prevent in the wings to external leaks.
And, by on the part many embossed portion being set in the wings, can improve the frictional strength on surface of the non-woven fabrics of rear part,, can prevent from fluffing or produce to break etc. when rearward part is applied from the power of gluteal fold.In addition, because front part divides the quantity of embossed portion few, therefore, the probability that embossed portion touches vaginal orifice etc. is low, forwardly on the part, the stimulation of vaginal orifice etc. is reduced, and becomes the good part of wearing feeling.
In addition, the absorbent commodity of a first aspect of the present invention can constitute, above-mentioned top flat contains the thermal bonding fiber, be provided with the second layer that contains the thermal bonding fiber below above-mentioned top flat, the aforesaid liquid permeability hole forms to the above-mentioned second layer from above-mentioned top flat, at the inner face of aforesaid liquid permeability hole, the top flat and the second layer are by heat bonding, in above-mentioned embossed portion, the above-mentioned top flat and the above-mentioned second layer are compressed together, and by heat bonding.
In this case, since top flat and the second layer around the liquid infiltration hole by bonding, therefore, top flat is reinforced by the second layer, when the power that is subjected to from the user health, be not easy to produce fold at surface layer, can prevent to begin to produce from the part in liquid infiltration hole to break at top flat.Therefore, also the aforesaid liquid permeability hole can be formed big opening size.In addition, in the wings on the part, if form the embossed portion that top flat and the second layer are compressed together, then in the wings on the part, top flat is also reinforced by the second layer.And if compress the top flat and the second layer together, then embossed portion is fluffy on every side, and embossed portion is not easy to make the health of user that the hard sense is arranged.
As mentioned above, to reinforce function and form fluffyly in order to bring into play, the weight per unit area of the above-mentioned second layer is more preferably greater than the weight per unit area of above-mentioned top flat.
In addition, the absorbent commodity of a first aspect of the present invention can constitute on the part of above-mentioned the place ahead and be formed with the aforesaid liquid permeability hole, but does not form above-mentioned embossed portion.
By only forming the liquid infiltration hole on the part forwardly, the zone of whole the place ahead part becomes soft, and vaginal orifice or its peripheral driving fit are felt to be soft and to feel good.
In this case, in the meansigma methods of the meansigma methods of the distance between centers of the above-mentioned embossed portion of adjacency on the part of the above-mentioned rear distance between centers of the aforesaid liquid permeability hole of adjacency on the part of above-mentioned the place ahead.
By partly improving the perforate density in liquid infiltration hole forwardly, can will shift to liquid absorption layer from the aforesaid liquid permeability hole rapidly from the excretory menses of vaginal orifice.In addition and since the menses that will rearward partly shift than drain on the part forwardly through insufficiency of blood, therefore,, also can fully stop rearward transfer even embossing density is low.In addition,, can prevent that the rear part is really up to the mark, can make contiguous sense softness with the user health by reducing the embossing density on the part of rear.
In a second aspect of the present invention, a kind of absorbent commodity of lengthwise is provided, have its skin-side surface and garment side surface, have top flat, at the egative film and the liquid absorption layer between above-mentioned top flat and egative film of garment side surface in the permeability for liquids of its skin-side surface
The compression groove that liquid absorption layer and top flat are compressed is together extended setting symmetrically by the longitudinal centre line of relative absorbent commodity, forms the middle section of lengthwise between it, and above-mentioned middle section is made of the place ahead part and rear part,
On whole above-mentioned middle section, the liquid infiltration hole is evenly distributed on the top flat, the embossed portion of the compressed point-like of above-mentioned top flat is set at above-mentioned middle section, makes the embossing density with (the area summation that the embossed portion of rear part is occupied)/(area of rear part) expression be higher than the embossing density of (the area summation that the embossed portion of the place ahead part is occupied)/(area of the place ahead part).
The absorbent commodity of this a second aspect of the present invention is by mainly partly being provided with embossed portion in the wings, and embossed portion does not stimulate vaginal orifice and periphery thereof.And, can attract the menses that will rearward shift with the high embossed portion of density.
In a second aspect of the present invention, top flat is not limited to by non-woven fabrics and forms, and the resin film that forms the liquid infiltration hole also can.
In this case, can make top flat and down the zygosity of surface layer is good, can prevent because the fold that on top flat, produces with the friction of gluteal fold etc. by above-mentioned embossed portion.In addition, improve the density of the following surface layer of top flat, on the high part of this density, can bring into play the function that retains the menses that will rearward shift by embossing.
Be provided with the second layer that contains the thermal bonding fiber below the top flat of above-mentioned resin film, in above-mentioned embossed portion, the above-mentioned top flat and the above-mentioned second layer are preferably compressed together, heat bonding.
Like this, in the wings on the part, need not use the hot-melt adhesive just can the top flat of resin film and second is integrated too much, and, can improve the fibre density of the second layer in embossed portion, can absorb menses with embossed portion powerfully.
In addition, if make absorbent commodity become the structure that on the part of above-mentioned the place ahead, does not form above-mentioned embossed portion, then when the place ahead part and vaginal orifice and peripheral driving fit thereof, can reduce stimulation to user skin.
As mentioned above, the present invention is applicable to vaginal orifice regional relative of above-mentioned the place ahead part and user, the absorbent commodity of the regional relative lengthwise of the rear part beyond above-mentioned rear part and the above-mentioned vaginal orifice.
Description of drawings
Can understand the present invention in further detail by following detailed description and the accompanying drawing that is suitable for embodiment of the present invention, but these do not limit the present invention, just in order to illustrate and to understand.
Fig. 1 is the vertical view of sanitary napkin of first embodiment of expression absorbent commodity of the present invention.
Fig. 2 is that expression sanitary napkin shown in Figure 1 is placed on the profile on the II-II line (lateral fiducial line) of crotch portion state of underwear.
Fig. 3 is the amplification view that expression is formed on the perforate state in the liquid infiltration hole on the part of the place ahead.
Fig. 4 is the amplification profile that expression is formed on the formation state of the embossed portion on the part of rear.
Fig. 5 is the part vertical view of the sanitary napkin of expression second embodiment of the present invention and the 3rd embodiment.
Fig. 6 is the cross sectional illustration figure that the expression sanitary napkin is worn on the state on the user health.
The specific embodiment
Following with reference to accompanying drawing, just the present invention is elaborated in ideal embodiment according to the present invention.In the following description, understand the present invention fully, exemplified some concrete details in order to make the reader.But, those skilled in the art will know that also can form the present invention even without these details.In addition, the present invention is not described in detail well-known structure for fear of nonsensical indefinite content.
The menses that absorbent commodity conduct of the present invention excretes from the vagina mouth with absorption are that the sanitary napkin of main purpose uses.In addition, in two surfaces of absorbent commodity, will be towards the surface of the thigh root pars intermedia of user as its skin-side surface, no matter whether its outside is installed with clothes on the surface of opposition side, all is expressed as garment side surface.
As used herein longitudinal centre line one speech be meant with absorbent commodity laterally be divided into two, to the line of longitudinal extension.On the one hand, the lateral fiducial line not necessarily with absorbent commodity vertically be divided into two, to the meaning of the line of horizontal extension, but in referring to use with part that vaginal orifice contacts on cross this longitudinally the center, to the line of horizontal extension.
In addition, as shown in following embodiment, though form liquid infiltration hole and embossed portion at the middle section of absorbent commodity,, in this manual, (this area is arbitrarily, for example 100mm with unit are 2) the quantity in liquid infiltration hole and the quantity of the embossed portion of above-mentioned unit are as the closeness in each liquid infiltration hole, the closeness of embossed portion.
In addition, middle section is distinguished into the place ahead part and rear part, with (the area summation that the liquid infiltration hole of the place ahead part is occupied)/(area of the place ahead part) as the perforate density on the part of the place ahead, with (the area summation that the liquid infiltration hole of rear part is occupied)/(area of rear part) as the perforate density on the part of rear, with (the area summation that the embossed portion of the place ahead part is occupied)/(area of the place ahead part) as the embossing density on the part of the place ahead, with the embossing density of (the area summation that the embossed portion of rear part is occupied)/(area of rear part) as the rear part.
Fig. 1 be the expression absorbent commodity of the present invention first embodiment sanitary napkin with its skin-side surface up vertical view, Fig. 2 is that expression sanitary napkin shown in Figure 1 is installed in the cutaway view on the II-II line (lateral fiducial line) of crotch portion state of underwear, Fig. 3 is the amplification view of the place ahead part of the middle section of the above-mentioned sanitary napkin of expression, and Fig. 4 is the amplification view of rear part of the middle section of the above-mentioned sanitary napkin of expression.
Sanitary napkin 1 shown in Figure 1 is the sanitary towel that is suitable for the lengthwise of the uses such as women's h.d. in the menstruation, and total length is approximately 200～380mm longitudinally.
That sanitary napkin 1 has is equidistant to horizontal expansion from longitudinal centre line Oy-Oy, to the 1a of right side edge portion and the 1b of left side edge portion of longitudinal extension, have the 1c of leading edge portion and the rear edge portion 1d that draw back convex curve shape at interval from lateral fiducial line Ox-Ox forwards, backwards.Distance from lateral fiducial line Ox-Ox to rear edge portion 1d is than the distance from lateral fiducial line Ox-Ox to the 1c of leading edge portion.
Above-mentioned right side edge 1a of portion and the 1b of left side edge portion are outstanding to the left and right sides in comprising the scope of specific length longitudinally of lateral fiducial line Ox-Ox, form flank section 1A, 1A with this ledge.And at the more rear of flank section 1A, 1A, above-mentioned right side edge 1a of portion and the 1b of left side edge portion form the curve shape that horizontal relative spacing rearward enlarges more gradually, and this enlarged forms rear portion wing flap 1B, 1B.
Shown in the cutaway view of Fig. 2, this sanitary napkin 1 has the egative film 2 and the top flat 3 that is emerging in the permeability for liquids of its skin-side surface of the liquid impermeability of the garment side surface of being emerging in.Liquid absorption layer 4 is between above-mentioned egative film 2 and top flat 3.Between above-mentioned top flat 3 and liquid absorption layer 4, the second layer 5 is set.Shown in the dotted line among Fig. 1, this liquid absorption layer 4 is set at the inboard of the past edge part 1c on the inboard of rear edge portion 1d and the broad scope except above-mentioned flank section 1A, 1A and the rear portion wing flap 1B of portion, 1B.
Sanitary napkin 1 top flat 3 and aforesaid liquid absorbed layer 4 at least is carried out pressurized and heating, forms the compression groove 10 that is emerging in its skin-side surface.That is, this compression groove 10 forms by the embossing processing of using heating and rolling.Under aforesaid liquid absorbed layer 4 and top flat 3 eclipsed states, the surface that contact top flat 3 is rolled on the surface of contact liq absorbed layer 4, heating with protuberance of embossed pattern is rolled in planar heating, pressurizes and adds thermosetting.
Above-mentioned compression groove 10 has high-density compressed portions and middle density compression unit, and high-density compressed portions almost is pressed into film like with aforesaid liquid absorbed layer 4 and top flat 3; Though middle density compression unit does not become film like, than the density height in the zone beyond the compression groove 10.This high-density compressed portions and middle density compression unit are interlaced, become the continuous recess of its skin-side surface of sanitary napkin 1 to egative film 2 sides depression.
As shown in Figure 1, above-mentioned compression groove 10 is divided into each compression groove shown in the symbol 11 to 17.
Inboard compression groove 11,11 relative longitudinal centre line Oy-Oy symmetrically, form to longitudinal extension ground.Above-mentioned inboard compression groove 11,11 comprises the place ahead curve part 11A, 11A, bending section 11B, 11B and rear rake 11D, 11D.This place ahead curve part 11A, 11A are the circular curves that protruding side direction longitudinal centre line Oy-Oy, make on the part of lateral fiducial line Ox-Ox its relative spacing stenosis narrow.Above-mentioned the place ahead curve part 11A, 11A along with from lateral fiducial line Ox-Ox towards the rear (direction of rear edge portion 1d) extend, the relative spacing of above-mentioned inboard compression groove 11,11 enlarges gradually.And on bending section 11B, 11B, above-mentioned relative spacing is the wideest, along with from bending section 11B, 11B towards the rear, form its relative spacing narrow gradually rear rake 11D, 11D.
At the front end of above-mentioned the place ahead curve part 11A, 11A, about inboard compression groove 11 and inboard compression groove 11 be connected compression groove 12 by the place ahead and connect.It is curve shapes that protruding side direction the 1c of leading edge portion that this place ahead connects compression groove 12.
Prolonging compression groove 13,13 further extends towards the 1c of leading edge portion from above-mentioned the place ahead curve part 11A, 11A are connected compression groove 12 with above-mentioned the place ahead intersection.This prolongation compression groove 13,13 is provided with symmetrically by relative longitudinal centre line Oy-Oy.
In the rear end of above-mentioned rear rake 11D, 11D, inboard compression groove 11 is connected compression groove 14 with inboard compression groove 11 by the rear and connects.It is curve shapes that protruding side direction rear edge portion 1d that the rear connects compression groove 14.
Like this, above-mentioned inboard compression groove 11,11, the place ahead connect compression groove 12, prolong compression groove 13,13 and rear and prolong compression groove 14 and all formed continuously.In addition, connect compression groove 12 by above-mentioned inboard compression groove 11,11, the place ahead and be connected compression groove 14 with the rear, the prescribed limit of its skin-side surface of sanitary napkin 1 is surrounded, and this scope that is surrounded becomes middle section 20.These middle section 20 relative longitudinal centre line Oy-Oy left-right symmetric are than the depth shape from the rearward part weak point of lateral fiducial line Ox-Ox from lateral fiducial line Ox-Ox part forwards.
Two outsides are formed with the outside, the place ahead compression groove 15,15 about the place ahead of inboard compression groove 11,11 curve part 11A, 11A.The outside, this place ahead compression groove 15,15 is the center with above-mentioned lateral fiducial line Ox-Ox, be formed on longitudinally before and after on the scope of specific length.The outside, above-mentioned the place ahead compression groove the 15, the 15th is to above-mentioned the place ahead curve part 11A, the similar curve shape of 11A.
On the one hand, two outsides are formed with the outside, rear compression groove 16,16 about the rear of inboard compression groove 11,11 rake 11D, 11D.The outside, above-mentioned rear compression groove 16,16 is along with towards rear edge portion 1d, straitly tilt gradually at interval, about rear outside compression groove 16 and 16 is connected compression groove 17 connections by the rear.The outside, above-mentioned rear compression groove 16 and 16 is connected compression groove 17 with above-mentioned rear and is formed continuously, and it is that protruding side is by the curve shape towards rear edge portion 1d that the rear connects compression groove 17.
Above-mentioned middle section 20 is made of the place ahead part 20A and rear part 20B.The length dimension longitudinally of the position of this place ahead part 20A and the boundary of rear part 20B and the place ahead part 20A and rear part 20B is different with the length dimension longitudinally of sanitary napkin 1.As shown in Figure 6, when being worn on the female body, the place ahead part 20A does not face toward vaginal orifice (N) facing to vaginal orifice (N), rear part 20B but faces toward the place that comprises anus (P) and gluteal fold (Q).
In embodiment shown in Figure 1, connecting compression groove 12 from the line at each top of the above-mentioned bending section 11B, the 11B that connect inboard compression groove 11,11 to above-mentioned the place ahead is the place ahead part 20A, and connecting compression groove 14 from the line on each summit of connecting above-mentioned bending section 11B, 11B to above-mentioned rear is rear part 20B.
As shown in Figure 1, the above-mentioned second layer 5 is set on the above-mentioned middle section 20, is the longitudinally rectangle of long limit towards article, left and right sides edge part 5a, 5a as the long limit of the second layer 5 more are positioned at longitudinal centre line Oy-Oy side than above-mentioned inboard compression groove 11,11, and the second layer 5 does not lean against on the inboard compression groove 11,11.The 5b of leading edge portion as a minor face of the second layer 5 is positioned at the position that connects the more close a little lateral fiducial line of compression groove 12 Ox-Ox than the place ahead, and the second layer 5 does not lean against the place ahead and connects on the compression groove 12.On the one hand, the rear portion of the second layer 5 connects compression groove 14 across the rear, is positioned at as the rear edge portion 5c of another minor face of the second layer 5 to connect compression groove 14 than the rear and connect compression groove 17 position more forward more backward and than the rear.
In addition, the front portion of the second layer 5 can connect compression groove 12 across the place ahead, the 5b of leading edge portion can be positioned at the centre that above-mentioned the place ahead connects compression groove 12 and the 1c of leading edge portion, and the 5b of leading edge portion of the second layer 5 can extend to the rear edge portion 1d that the 1c of leading edge portion of sanitary napkin 1, rear edge portion 5c can extend to sanitary napkin 1.
On above-mentioned middle section 20, many liquid infiltration hole 25 is arranged regularly to be arranged on the part 20A of its place ahead, and the embossed portion 26 of many point-like is arranged regularly to be arranged on the part 20B of rear.In Fig. 1,, represent embossed portion 26 with black the circle for the purpose of convenient for easily difference liquid infiltration hole 25 and embossed portion 26 from drawing.But embossed portion 26 is not coated with black in the actual article.
On above-mentioned the place ahead part 20A, form aforesaid liquid permeability hole 25, but do not form embossed portion 26.That is, on the part 20A, there is not embossed portion 26 between the liquid infiltration hole 25 of adjacency and the liquid infiltration hole 25 forwardly.But, as shown in Figure 1, in the limited zone of the interface of part 20A and rear part 20B, also might as well mix and have aforesaid liquid permeability hole 25 and embossed portion 26 forwardly.
In the present embodiment, each liquid infiltration hole 25 is circular, but also can be Long Circle, and each liquid infiltration hole 25 also can be short otch.
In the present embodiment, only be provided with embossed portion 26 on the part 20B in the wings.That is, on the part 20B liquid infiltration hole 25 is not set in the wings.But on above-mentioned rear part 20B, existence also can be mixed with embossed portion 26 in liquid infiltration hole 25.Part 20B goes up under the situation that forms liquid infiltration hole 25 in the wings, and the quantity in the liquid infiltration hole 25 on the part 20B of rear is most preferably less than the quantity of embossed portion 26.Perhaps, be preferably lower than the embossing density of usefulness (the area summation that the embossed portion 26 of rear part 20B is occupied)/(area of rear part 20B) expression with the perforate density of (the area summation that the liquid infiltration hole 25 of rear part 20B is occupied)/(area of rear part 20B) expression.
In the present embodiment, each shape of the embossed portion of point-like (that is, being arranged in the embossed portion of dot pattern) 26 is circular.But the embossed portion 26 of the point-like of indication is not limited to circle as mentioned above in this description, also can be rectilinear form and other shapes of Long Circle, weak point.
In addition, when comparing with the regulation area of the place ahead part 20A and rear part 20B, the quantity of the embossed portion 26 of the every regulation area on the part 20B of rear is less than the quantity of the aforesaid liquid permeability hole 25 of the every regulation area on the part 20A of the place ahead.That is, the closeness of the embossed portion 26 on the rear part 20B is lower than the closeness in the liquid infiltration hole 25 on the part 20A of the place ahead.
In addition, be lower than the perforate density of the place ahead part 20A of usefulness (the area summation that the liquid infiltration hole 25 of the place ahead part 20A is occupied)/(area of the place ahead part 20A) expression with the embossing density on the rear part 20B of (the area summation that the embossed portion 26 of rear part 20B is occupied)/(area of rear part 20B) expression.And in embodiment shown in Figure 1, the meansigma methods of the middle ware distance of the embossed portion 26 of the adjacency on the part 20B of rear is longer than the meansigma methods of the distance between centers in the liquid infiltration hole 25 of the adjacency on the part 20A of the place ahead.But the area of each embossed portion 26 is greater than the area in each liquid infiltration hole 25.
The perforated area of an aforesaid liquid permeability hole 25 is 0.2～8mm 2, under the situation of circle, diameter is 0.5～3.2mm.The distance between centers in the liquid infiltration hole 25 of adjacency is 2～8mm.In addition, the area of the bottom 26a of above-mentioned embossed portion 26 is 2～10mm 2, under the situation of circle, diameter is 1.6～3.6mm.The distance between centers of the embossed portion 26 of adjacency is 3～10mm.
In order to be drained forwardly the menses of the part 20A liquid absorption layer 4 that leads rapidly and equably, forwardly on any position of part 20A, liquid infiltration hole 25 is preferably with identical closeness setting, and as shown in Figure 1, aforesaid liquid permeability hole 25 preferably evenly is provided with regularly.Percentage ratio in the perforate density of above-mentioned the place ahead part 20A is 6～20%.In addition, the width in the zone that aforesaid liquid permeability hole 25 forms need be laterally more than or equal to 10mm, this horizontal and longitudinal centre line Oy-Oy orthogonal.If not enough above-mentioned scope then is difficult to and will fully shifts to liquid absorption layer 4 from the menses that vaginal orifice excretes.
On the other hand, on the part 20B, the closeness of embossed portion 26 can be different because of the position in the wings.For example, can be that in the position near bending section 11B, 11B, above-mentioned closeness is low at the closeness height that connects the position embossed portion 26 of compression unit 14 near the rear.
Fig. 3 is the perforate state in the liquid infiltration hole 25 of the above-mentioned the place ahead part 20A of expression, and Fig. 4 is the formation state of the embossed portion 26 of the above-mentioned rear part 20B of expression.
As shown in Figure 3, on the part 20A, liquid infiltration hole 25 connects top flat 3, is formed into the second layer 5 forwardly, and preferably aforesaid liquid permeability hole 25 connects the second layer 5 formation from top flat 3.In addition, the part beyond edge part 5a, the 5a of the second layer 5,25 in liquid infiltration hole is formed on the above-mentioned top flat 3.
As shown in Figure 4, on the part 20B, the top flat 3 and the second layer 5 are compressed in the wings, are formed with the above-mentioned embossed portion 26 that is concavity towards liquid absorption layer 4.In addition, on the part beyond edge part 5a, the 5a of the second layer 5, have only above-mentioned top flat 3 to be compressed, be formed with the above-mentioned embossed portion 26 that is concavity towards sanitary towel inside.
Above-mentioned top flat 3 contains the thermoplasticity fiber that can carry out molten adhere, and the above-mentioned second layer 5 also contains the thermoplasticity fiber that can carry out molten adhere.At this, the top flat 3 and the second layer 5 should be by limitations, to be interpreted as be only fibroplastic slice/layer by such thermoplasticity, also can be except that the thermoplasticity fiber, contain the sheet/layer of the non-thermoplasticity fiber that resembles natural fiber or regenerated celulose fibre.
Aforesaid liquid permeability hole 25 forms by the pin or the pin of heating.That is, under the superimposed state of top flat 3 and the second layer 5,, form the liquid infiltration hole 25 of the downward side-prominent shape of terminal 25a by above-mentioned pin or pin are inserted, extract to the second layer 5 sides from top flat 3.At this moment, at the inner face 25b in liquid infiltration hole 25 and on every side, the thermoplasticity fiber that contains in the thermoplasticity fiber that contains in the top flat 3 and the second layer 5 is by heat bonding mutually.Like this, can keep the hole shape in liquid infiltration hole 25, and, be reinforced around the perforate in liquid infiltration hole 25 by the second layer 5.In addition, because top flat 3 and liquid-permeable layers 5 are melted combination, therefore, there is no need the situation that bonding agent hinders liquid infiltration not to take place with the bonding top flat 3 of bonding agent and the second layer 5.
After aforesaid liquid permeability hole 25 formed, the top flat 3 and the second layer 5 were sandwiched between the rolling of process heating, form above-mentioned embossed portion 26.At this moment, the surface of rolling the contact second layer 5 that has an even surface, the surface that contacts top flat 3 is rolled in the embossing with protuberance.Like this, on the inner face 26b of embossed portion 26, the thermoplasticity fiber that contains in the thermoplasticity fiber that contains in the top flat 3 and the second layer 5 is by mutual heat bonding, and simultaneously, on the outer peripheral portion of this inner face 26b, the fibre density of the top flat 3 and the second layer 5 increases.
On the 26a of the bottom of embossed portion 26, the fiber that forms the fiber of top flat 3 and form the second layer 5 is compressed, forms high density, above-mentioned thermoplasticity fiber fusing, and bottom 26a becomes film like or film like almost.
By the heat bonding of the thermoplasticity fiber on inner face 26b and the bottom 26a, can keep the shape of embossed portion 26, and, can reinforce top flat 3 by the second layer 5.Particularly, can improve the durability of top flat 3 because bottom 26a is formed high density.
Above-mentioned top flat 3 is formed by hot-wind nonwoven cloth.It is the polyethylene terephthalate (PET) that contains titanium oxide that this hot-wind nonwoven cloth uses core, and crust is the core-sheath-type composite synthetic fibre of polyethylene (PE), forms this fiber is bonding by hot blast, and weight per unit area is 15～60g/m 2About.In addition, part in the above-mentioned composite synthetic fibre of formation top flat 3 is coated with the hydrophilic interfacial agent, remaining is coated with the water proofing property interfacial agent, and these fibers are mixed, and the composite rate that is coated with the fiber of water proofing property interfacial agent is preferably 10～30 quality %.By the fiber that top flat 3 is contained equably be coated with the water proofing property interfacial agent, the composite rate that forms above-mentioned scope, can suppress to be excreted to menses too diffusion in top flat 3 of top flat 3, make menses forwardly part 20A go up main permeation liquid permeability hole 25, be excreted to liquid absorption layer 4.
But, above-mentioned top flat 3 also can be in the liquid infiltration hole zone beyond 25 make menses towards the second layer 5 infiltrations.Top flat 3 is in order to bring into play such liquid infiltration function, and density is preferably smaller or equal to 0.12g/cm 3, be limited to 0.025g/cm under it 3About.
The second layer 5 is to be that polypropylene (PP), crust are that the section of polyethylene (PE) is that the hot-wind nonwoven cloth that the core-sheath-type composite synthetic fibre of eccentric shape forms forms by core.The hot-wind nonwoven cloth of the second layer 5 is that all fibers are all applied by the hydrophilic interfacial agent.Promptly do not contain the fiber that has applied the water proofing property interfacial agent.In Fig. 3 and embodiment shown in Figure 4, the second layer 5 for example, is folded into three layers with a hot-wind nonwoven cloth and uses by many above-mentioned hot-wind nonwoven cloths are overlapped.The weight per unit area of a hot-wind nonwoven cloth is 15～50g/m 2About, the weight per unit area of the second layer 5 is 45～150g/m 2About.
Weight per unit area by making the second layer 5 can be reinforced top flats 3 with the second layer 5 greater than the weight per unit area of top flat 3, can prevent to produce excessive fold on top flat 3, produce from the part in liquid infiltration hole 25 and break etc.
For example, top flat 3 is that the fiber of 2.2dtex constitutes by fineness, and the second layer 5 is that the fiber of 4.4dtex constitutes by fineness.The fibre density of the second layer 5 is lower than the fibre density of top flat 3.The fibre density of the second layer 5 is 0.016～0.08g/cm 3
In addition, the top flat 3 and the second layer 5 also can be formed by the non-woven fabrics beyond the above-mentioned hot-wind nonwoven cloth.For example, available aspunlacednonwovenfa,ric forms top flat 3, this aspunlacednonwovenfa,ric is by the thermoplasticity fiber of regenerated celulose fibre and molten adhere, and add paper pulp if desired and constitute, can form the second layer 5 with air-laid nonwoven fabrics, air-laid nonwoven fabrics be paper pulp and thermoplasticity fiber is bonding with bonding agent after the lamination in air, between warm-up mill, pressurize.
Aforesaid liquid absorbed layer 4 is the materials that contain the absorbing polymeric of the synthetic water absorbent polymer of polyacrylate, polyacrylamide, anhydrous maleic acid etc. or natural class such as starch, cellulose in the polymer of the paper pulp of comminution pulp, soda pulping, crosslinked paper pulp etc., and the hydrophilic thin paper of usefulness such as paper pulp and above-mentioned synthetic water absorbent polymer is encased use.
Above-mentioned egative film 2 is the liquid impermeability and thin slice that be breathability, is polyethylene (PE) thin film that is formed with trickle air-vent or polypropylene (PP) thin film etc.For example, by mixed C aCO on plastic tab 3, BaSO 4Deng inorganic filler, carry out prolonged treatment, trickle air-vent and on thin film, suitably disperse to form, improved aeration.The thickness of thin film is about 15～50 μ m.
The above-mentioned second layer 5 and absorbed layer 4 usefulness hot-melt adhesives are bonding, and hot-melt adhesive is not hindered liquid infiltration ground to carry out part and smears.In addition, liquid absorption layer 4 and egative film 2 also use hot-melt adhesive bonding.
In the manufacturing process of this sanitary napkin 1, as mentioned above that the top flat 3 and the second layer 5 is overlapping, with liquid infiltration hole 25 and embossed portion 26 any one formation earlier, the bonding liquid absorbed layer 4 and the second layer 5, the above-mentioned compression groove 10 of formation then.Then, with the surface adhesion of egative film 2 with liquid absorption layer 4.
As shown in Figure 2, non-permeable film 30,30 is set in the left and right sides of its skin-side surface.On above-mentioned flank 1A, 1A and rear portion wing flap 1B, 1B, above-mentioned non-permeable film 30,30 by hot-melt adhesive be bonded in egative film 2 above.On the equidistant to the left and right position of leaving from longitudinal centre line Oy-Oy, non-permeable film 30 is overlapped into two-layer, and the elastomeric element 32 of longitudinal extension is bonded in its inside.By above-mentioned elastomeric element 32, elastic contractile force acts between the place ahead part and rear part of sanitary napkin 1, makes sanitary napkin 1 bending, its result, on the mid portion of the front and back of sanitary napkin 1, non-permeable film 30,30 erects, forms leakproof wall 31,31.
Above-mentioned non-permeable film is formed by the compound nonwoven cloth of spunbond shape non-woven fabrics, melt spraying non-woven fabrics or these non-woven fabrics of lamination.
The weight per unit area of liquid absorption layer 4 is maximum on middle section 20.The part of being clamped by inboard compression groove 11,11 and the place ahead outside compression groove 15,15, the part of being clamped by inboard compression groove 11,11 and the outside, rear compression groove 16,16 and be connected compression groove 14 by the rear and be connected each weight per unit area of part that compression groove 17 clamps with the rear all less than above-mentioned middle section 20.The weight per unit area of the part of the liquid absorption layer 4 beyond these parts and the part of being clamped by compression groove 15,15 outside inboard compression groove 11,11 and the place ahead etc. are identical or slightly little.
The ideal weight per unit area of the liquid absorption layer 4 on middle section 20 is 400～1200g/m 2, 500～1000g/m preferably 2The part of being clamped by above-mentioned inboard compression groove 11,11 and the place ahead outside compression groove 15,15, the part of being clamped by inboard compression groove 11,11 and the outside, rear compression groove 16,16 and be connected compression groove 14 is connected the part that compression groove 17 clamps with the rear each ideal weight per unit area by the rear and be preferably 300～900g/m 2, be more preferably 350～600g/m 2In addition, the ideal weight per unit area of the liquid absorption layer 4 of other parts is 300～700g/m 2
Its result, as shown in Figure 2, thickness increases on middle section 20, and on middle section 20, its skin-side surface becomes towards the user health and expand into very big shape.
The length of middle section 20, promptly the place ahead connects compression groove 12 and is connected being spaced apart about 120～300mm longitudinally of compression groove 14 with the rear.Determine according to the width of female sex organs on the width of the middle section 20 on the lateral fiducial line Ox-Ox shown in Figure 2, the width W 1 that promptly part 20A is the narrowest forwardly.Because the mean breadth between women's thigh root is about 30mm, therefore above-mentioned width W 1 is preferably in the scope of 15～50mm, and the scope of 20～40mm is better.In addition, the lateral separation between bending section 11B, the 11B of inboard compression groove 11,11 than above-mentioned width W 1 wide 10～40mm about.In addition, the lateral edge portion 5a of the second layer 5, the width between the 5a are than above-mentioned width W 1 narrow 1～10mm.
The above-mentioned rear part 20B of middle section 20 is sizes of the gluteal fold (Q) that enters women as shown in Figure 6 easily, its length, and the length that promptly connects compression groove 14 from bending section 11B, 11B to the rear is about 60～150mm.
When this sanitary napkin 1 being used on the health of user, the inner face that is arranged on the pressure adhesive of outside of egative film 2 and crotch cloth 41 shown in Figure 2 is bonding, and at this moment, rear portion wing flap 1B, 1B are also bonding with the inner face of underwear.In addition, flank 1A, 1A towards the outside bending of underwear, the both sides of the edge portion that volume is lived crotch cloth 41, are bonded in the pressure adhesive that is arranged on the garment side surface of flank 1A, 1A the outside of crotch cloth 41.
As shown in Figure 6, with sanitary napkin 1 be installed in put on this underwear under the state on the crotch cloth 41 after, women's thigh root pars intermedia is covered by its skin-side surface of sanitary napkin 1 to gluteal fold (Q) from mons pubes (M).
As shown in Figure 2, the middle section of being clamped by inboard compression groove 11 and 11 20 expands towards the health of user, and is more fluffy than other parts.Therefore, the place ahead part 20A of fluffy middle section 20 easily and vaginal orifice (N) driving fit, the preferably central part driving fit of the lateral fiducial line Ox-Ox part of passing and vaginal orifice (N).In addition, the wide part of being clamped by bending section 11B, the 11B of inboard compression groove 11,11 mainly contacts with perineal position (O), and the rear part 20B of middle section 20 contacts to gluteal fold (Q) with anus (P).
The top flat 3 that is positioned at its skin-side surface of above-mentioned middle section 20 is low-density hot-wind nonwoven cloths, is provided with the fluffy hot-wind nonwoven cloth second layer 5 in its lower section.Therefore, to give the contiguous sense of the each part mentioned above of user health be softish to middle section 20.Particularly, owing to do not have embossed portion 26 on the part 20A forwardly, so embossed portion do not contact vaginal orifice and periphery thereof, and can not feel stimulates.In addition, because the embossed portion 26 that is positioned at rear part 20B gets deeply stuck in to the second layer 5, therefore in the wings on the part 20B, the high density of the bottom 26a of embossed portion 26 partly is difficult to directly contact with the health of user.Therefore, reduced the probability that embossed portion 26 stimulates in perineal position (O), anus (P) and the gluteal fold (Q).
Mainly drained on the part 20A of the place ahead of middle section 20 from the menses that vaginal orifice (N) excretes.Because top flat 3 is low-density non-woven fabrics, though menses permeate in top flat 3, because top flat 3 contains the fiber that has applied the water proofing property interfacial agent, therefore, the diffusion of the menses on top flat 3 is prevented from.Drainage is shifted on the second layer 5 of driving fit below top flat 3 at the menses on the top flat 3, because the second layer 5 is hot-wind nonwoven cloths, has the space in inside, and therefore, through in the space of the second layer 5, the liquid absorption layer 4 that is positioned at below it attracts menses by gravity.But the most of menses that are excreted on the part 20A of the place ahead pass through rapidly in the liquid infiltration hole 25, and quilt attracts with the liquid absorption layer 4 of the following driving fit of the second layer 5.
Like this, the menses that excrete from vaginal orifice (N) are absorbed rapidly by liquid absorption layer 4 on the part 20A forwardly.But, with the posture of h.d., exist to cross health perineal position (O) towards anus (P) and the mobile menses of gluteal fold (Q).In addition, a large amount of menses when once forwards part 20A drains, sometimes its part along the surface of top flat 3 rearward part 20B shift.
Pass through the capillarity of the high density part on every side of embossed portion 26 to the menses of above-mentioned rear part 20B transfer, attracted by powerful, but because this high density partly is 5 formation from top flat 3 to the second layer, therefore, 3 liquid absorption layers 4 to the second layer 5, quilt high-hydrophilic in its lower section suck, keep menses along high density portion from top flat.Though do not form liquid infiltration hole 25 on the part 20B in the wings, but because the amount of menses that arrives this rear part 20B is than the menses much less of draining on the part 20A forwardly, so will rearward mobile menses by being dispersed in that embossed portion 26 on the part 20B of rear can fully collect.Therefore, can prevent the rearward leakage of menses.
At this, above-mentioned rear part 20B with from anus (P) to the interior driving fit of gluteal fold (Q), the activity of corresponding buttocks, act on above-mentioned rear part 20B repeatedly from the compression stress of side.In addition, owing to resemble the big variation of the body gesture of h.d. standing up, pressure also acts on above-mentioned rear part 20B, and this pressure changes.But by embossed portion 26 is set, on the part 20B, the durability of top flat 3 is enhanced in the wings, and top flat 3 is reinforced by the second layer 5.Therefore, can eliminate big fold or the wildness of the last generation of part 20B in the wings, and then produce damaged uneasiness.
Fig. 5 is the part vertical view of the sanitary napkin of explanation other embodiments of the present invention.
In Fig. 5, only represented to comprise the part of compression groove 11 to 17 and the middle section 20 and the second layer 5.Therefore other parts have omitted diagram because identical with the sanitary napkin 1 of first embodiment shown in Figure 1.In addition, the shape of compression groove 11 to 17 shown in Figure 5 is identical with first embodiment shown in Figure 1 with structure.
(as what in the embodiment of Fig. 1, also describe) as shown in Figure 5, being connected compression groove 12 and rear by inboard compression groove 11,11, the place ahead, to connect middle section 20 that compression groove 14 surrounds be to be starting point with bending section 11B, 11B, its more the place ahead be the place ahead part 20A, with bending section 11B, 11B is starting point, its more the rear be rear part 20B.And, in the present embodiment, the place ahead part 20A further has three zones, promptly, the 3rd the place ahead part 20A3 at second the place ahead part 20A2 in more the place ahead of first the place ahead part 20A1, first the place ahead part 20A1 and the more rear of first the place ahead part 20A1, at this, the boundary of the boundary of first the place ahead part 20A1 and second the place ahead part 20A2 and first the place ahead part 20A1 and the 3rd the place ahead part 20A3 is equidistant to vertically leaving from lateral fiducial line Ox-Ox.
In this sanitary napkin, above-mentioned first the place ahead part 20A1 is facing to vaginal orifice (N), and the 3rd the place ahead part 20A3 is facing to the rear of above-mentioned vaginal orifice (N).In this manual, owing to can will be positioned at the rear part that the part of the middle section 20 at rear more is defined as middle section 20 with comparing facing to the part of vaginal orifice, therefore, in embodiment shown in Figure 5, also the part of 20A3 can be included among the part 20B of rear.But in the embodiment of Fig. 5, part and rear part 20B difference with 20A3 are called the 3rd the place ahead part as mentioned above.
In Fig. 5, in middle section 20, with there not being the white circle of blacking to represent embossed portion 26.But omitted the diagram in liquid infiltration hole.
Above-mentioned each embossed portion 26 all forms with area identical, but its closeness, the quantity of embossed portion 26 that is unit are is low on the first the place ahead part 20A1 that contacts with vaginal orifice, and part 20B, second the place ahead part 20A2 and the 3rd the place ahead part 20A3 go up high in the wings.
In addition, if with (the area summation that the embossed portion 26 of first the place ahead part 20A1 is occupied)/(area of first the place ahead part 20A1) as embossing density A1, with (the area summation that the embossed portion 26 of second the place ahead part 20A2 is occupied)/(area of second the place ahead part 20A2) as embossing density A2, with (the area summation that the embossed portion 26 of the 3rd the place ahead part 20A3 is occupied)/(area of the 3rd the place ahead part 20A3) as embossing density A3, as embossing density B, then embossing density A1 is than embossing density A2 with (the occupied area summation of the embossed portion 26 of rear part 20B)/(area of rear part 20B), any one of A3 and embossing density B is all low.And in the present embodiment, embossing density A2 and embossing density A3 and embossing density B are about equally.Embossing density A1 is preferably less than or equals 1/5 of embossing density A2, A3 and embossing density B, is less than or equal to 1/10 better.
Therefore, be lower than the embossing density of usefulness (the area summation that the embossed portion 26 of rear part 20B is occupied)/(area of rear part 20B) expression with the embossing density of (the area summation that the embossed portion 26 of the place ahead part 20A is occupied)/(area of the place ahead part 20A) expression, the former embossing density is the latter's below 1/5 of embossing density, and is better below 1/10.
In addition, in embodiment shown in Figure 5, at the bending section 11B of inboard compression groove 11,11, the rear of 11B, the inboard of rake 11D, 11D forms short compression groove 18,18 in the wings.This short compression groove 18,18 is identical with above-mentioned each compression groove 11 to 17, and top flat 3 and liquid absorption layer 4 are compressed, and is that high-density compressed portions and middle density compression unit are interlaced and form.
Like this, in the wings on the part 20B, except the embossed portion 26 of point-like, have above-mentioned short compression groove 18,18 to exist, about the definition of the embossing density of the embossed portion 26 of above-mentioned point-like, the area of above-mentioned short compression unit is not contained in the summation of embossed portion 26 occupied areas.
As the sanitary napkin of layout patterns, can constitute second embodiment shown below and the 3rd embodiment with embossed portion 26 shown in Figure 5.
In second embodiment, the non-woven fabrics that top flat 3 usefulness that cover above-mentioned middle section 20 are identical with first embodiment shown in Figure 1 forms, and with shown in Figure 3 identical, forms the liquid infiltration hole 25 that connects top flat 3 and second 5.This liquid infiltration hole 25 can be distributed in the whole zone of the place ahead part 20A in the same manner with Fig. 1, also can be evenly distributed on first the place ahead part 20A1 and the second the place ahead part 20A2.And in second embodiment, aforesaid liquid permeability hole 25 also can be formed on the part 20B of rear.
But the perforate density of using (summation of the perforated area in the liquid infiltration hole 25 of the place ahead part 20A)/(area of the place ahead part 20A) to represent is higher than the perforate density of (summation of the perforated area in the liquid infiltration hole 25 of rear part 20B)/(area of rear part 20B).In addition, the embossing density that is higher than (summations of above-mentioned embossed portion 26 occupied areas of the place ahead part 20A)/(area of the place ahead part 20A) with the embossing density of (summations of above-mentioned embossed portion 26 occupied areas of rear part 20B)/(area of rear part 20B) expression.
Like this, in Fig. 5, be the place ahead part with the scope of 20A1 and the scope definition of 20A2, when the scope definition of the scope of 20A3 and 20B is the rear part too.
Like this, on the part 20A, because many liquid infiltration hole 25 exists, therefore, on particularly first the place ahead part 20A1 of part 20A, menses can promptly shift to liquid absorption layer 4 through liquid infiltration hole 25 by deadweight forwardly forwardly.In addition, on particularly first the place ahead part 20A1 of part 20A,, therefore reduce the probability that embossed portion 26 contacts with vaginal orifice forwardly because embossed portion 26 is few.
On the other hand, in the wings on the part 20B, owing to many embossed portion 26 exist, therefore, part 20B enters in the gluteal fold, when being subjected to from the pressure of user health or frictional force, can preventing on the top flat 3 that is positioned on the part 20B of rear fluffing or 25 produce and break from the liquid infiltration hole in the wings.
In addition, as shown in Figure 5, few in the quantity that is positioned at embossed portion 26, mainly exist on the second the place ahead part 20A2 and the 3rd the place ahead part 20A3 on the front and back position of first the place ahead part 20A1 in liquid infiltration hole 25, because the closeness height of embossed portion 26, therefore, top flat is reinforced by the front and back of first the place ahead part 20A1, can prevent at first the place ahead part 20A1, produces excessive fold or by breaking that liquid infiltration hole 25 causes on top flat.
In the 3rd embodiment of the present invention, the top flat that covers middle section 20 shown in Figure 5 is formed by the resin film with liquid infiltration hole.
Above-mentioned resin film for example is the polyethylene film muddy owing to contain titanium oxide, and thickness is about 15～50 μ m.The resin film of soft state is supplied with to the cylinder surface with many perforates, attracted air, can form many liquid infiltration hole by inboard from cylinder.Above-mentioned each liquid infiltration hole is circular, Long Circle.Perhaps resin film also can be a web frame, and mesh is partly brought into play the effect in liquid infiltration hole.The average bore size in each liquid infiltration hole is 0.2～2mm, and the perforate density in liquid infiltration hole is preferably 10～30%.
In Fig. 5, the above-mentioned resin film with many liquid infiltration hole uses, covers under the situation of middle section 20 (and other zones) as surface layer 3, and on whole middle section 20, the liquid infiltration hole is disperseed to be provided with equably.
In this case, on embossed portion shown in Figure 5 26, the above-mentioned resin film and the second layer that is positioned at below it are heated together, are pressurizeed, and the top flat 3 of resin film and the second layer 5 are by integrated on embossed portion 26.In addition, on embossed portion 26, the fibre density of the second layer 5 increases.
In the 3rd embodiment, on the part 20A, menses also can permeate the liquid infiltration hole, the dependence that are formed on the resin film and conduct oneself with dignity through between the fiber of the second layer 5, rapidly to liquid absorption layer 4 transfers forwardly.In addition, part 20A particularly on first the place ahead part 20A1, because embossed portion 26 is few, therefore reduces the probability that embossed portion 26 contacts with vaginal orifice forwardly.
In the wings on the part 20B, menses also can be through being formed on liquid infiltration hole on the top flat 3, shifting to liquid absorption layer 4 rapidly, and meanwhile, on many embossed portion 26, menses are attracted on the high part of the fibre density of the second layer 5 by brute force.In addition, part 20B engages by many embossed portion 26, top flat 3 and the second layer 5 in the wings, therefore in the time of can preventing to enter rear part 20B in the gluteal fold and be subjected to, on the top flat 3 that forms with resin film, produce excessive fold from the pressure of user health or frictional force.
In addition, the top flat 3 and the second layer 5 of resin film are bonding by hot-melt adhesive, adaptation is enhanced, but on embossed portion 26, because the top flat 3 and the second layer 5 are engaged, therefore can make the applying amount of above-mentioned hot-melt adhesive few, therefore, liquid from top flat 3 to the second layer 5 infiltration little by the probability that hot-melt adhesive hinders.
Though with regard to embodiment the present invention is illustrated and illustrates, above-mentioned and other various changes, omit, append that not exceed spirit of the present invention and scope and constitute the present invention be that those skilled in the art certainly can understand.For example, the place ahead also can be set connect compression groove 12, rear connection compression groove 14, and the inboard compression groove 11 and 11 about making is separate.Therefore, be construed as the present invention and be not limited to certain embodiments described herein, and comprise, in its scope that relates to and in impartial scope, be carried out specific all possible embodiment about the feature described in the appended claim.
As mentioned above, in the present invention, can collect menses really, can prevent effectively that menses from rearward shifting by the middle section that is compressed the lengthwise that groove clamps.In addition, can improve the durability of the top flat of middle section, can eliminate owing to the power that is subjected to from the user health produces excessive fold or produces disruptive uneasiness.

Claims (10)

1. the absorbent commodity of a lengthwise, have its skin-side surface and garment side surface, have the permeability for liquids that is positioned at its skin-side surface top flat (3), be positioned at the egative film (2) of garment side surface and be positioned at above-mentioned top flat (3) and egative film (2) between liquid absorption layer (4), it is characterized in that
The compression groove (11) that liquid absorption layer (4) and top flat (3) are compressed is together extended setting symmetrically by the longitudinal centre line of relative absorbent commodity (Oy-Oy), between it, form the middle section (20) of lengthwise, above-mentioned middle section (20) is made of the place ahead part (20A) and rear part (20B)
In above-mentioned middle section (20), on the non-woven fabrics that forms top flat (3), form the embossed portion (26) of liquid infiltration hole (25) and point-like; This liquid infiltration hole (25) connects above-mentioned top flat (3) at least; The embossed portion of this point-like (26) is compressed above-mentioned top flat (3) at least,
With the perforate density of (the area summation that the liquid infiltration hole (25) of the place ahead part (20A) is occupied)/(area of the place ahead part (20A)) expression, be higher than the perforate density of (the area summation that the liquid infiltration hole (25) of rear part (20B) is occupied)/(area of rear part (20B)); With the embossing density of (the area summation that the embossed portion (26) of rear part (20B) is occupied)/(area of rear part (20B)) expression, be higher than the embossing density of (the area summation that the embossed portion (26) of the place ahead part (20A) is occupied)/(area of the place ahead part (20A)).
2. the absorbent commodity of lengthwise as claimed in claim 1, it is characterized in that, above-mentioned top flat (3) contains the thermal bonding fiber, below above-mentioned top flat (3), be provided with the second layer (5) that contains the thermal bonding fiber, aforesaid liquid permeability hole (25) is formed on from above-mentioned top flat (3) to the above-mentioned second layer (5), inner face (25b) in aforesaid liquid permeability hole (25), the top flat (3) and the second layer (5) are by heat bonding, in above-mentioned embossed portion (26), the above-mentioned top flat (3) and the above-mentioned second layer (5) are compressed together, and by heat bonding.
3. the absorbent commodity of lengthwise as claimed in claim 2 is characterized in that, the weight per unit area of the above-mentioned second layer (5) is greater than the weight per unit area of above-mentioned top flat (3).
4. the absorbent commodity of lengthwise as claimed in claim 1 is characterized in that, is formed with aforesaid liquid permeability hole (25) on above-mentioned the place ahead part (20A), but does not form above-mentioned embossed portion (26).
5. the absorbent commodity of lengthwise as claimed in claim 4, it is characterized in that the meansigma methods of the distance between centers of the above-mentioned embossed portion (26) of adjacency is greater than the meansigma methods of the distance between centers of the aforesaid liquid permeability hole (25) of the last adjacency of above-mentioned the place ahead part (20A) on above-mentioned rear part (20B).
6. the absorbent commodity of a lengthwise, have its skin-side surface and garment side surface, have the permeability for liquids that is positioned at its skin-side surface top flat (3), be positioned at the egative film (2) of garment side surface and be positioned at above-mentioned top flat (3) and egative film (2) between liquid absorption layer (4), it is characterized in that
The compression groove (11) that liquid absorption layer (4) and top flat (3) are compressed is together extended setting symmetrically by the longitudinal centre line of relative absorbent commodity (Oy-Oy), between it, form the middle section (20) of lengthwise, above-mentioned middle section (20) is made of the place ahead part (20A) and rear part (20B)
On whole above-mentioned middle section (20), liquid infiltration hole (25) is evenly distributed on the top flat (3), the embossed portion (26) of compressing the point-like of above-mentioned top flat (3) is arranged on the above-mentioned middle section (20), makes the embossing density with (the area summation that the embossed portion (26) of rear part (20B) is occupied)/(area of rear part (20B)) expression be higher than the embossing density of (the area summation that the embossed portion (26) of the place ahead part (20A) is occupied)/(area of the place ahead part (20A)).
7. the absorbent commodity of lengthwise as claimed in claim 6 is characterized in that, above-mentioned top flat (3) is the resin film that is formed with liquid infiltration hole (25).
8. lengthwise absorbent commodity as claimed in claim 7, it is characterized in that, be provided with the second layer (5) that contains the thermal bonding fiber below above-mentioned top flat (3), in above-mentioned embossed portion (26), the above-mentioned top flat (3) and the above-mentioned second layer (5) are compressed together, heat bonding.
9. the absorbent commodity of lengthwise as claimed in claim 6 is characterized in that, does not form above-mentioned embossed portion (26) on above-mentioned the place ahead part (20A).
10. as the absorbent commodity of claim 1 or 6 described lengthwises, it is characterized in that the vaginal orifice of above-mentioned the place ahead part (20A) and user regional relative, the rear part beyond above-mentioned rear part (20B) and the above-mentioned vaginal orifice regional relative.
CNB2003801011304A 2002-12-05 2003-12-02 Elongated absorbent article Expired - Lifetime CN1303960C (en)

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JP2002354181A JP4198978B2 (en) 2002-12-05 2002-12-05 Long absorbent article
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CN1303960C CN1303960C (en) 2007-03-14

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KR (1) KR100904473B1 (en)
CN (1) CN1303960C (en)
AU (1) AU2003284529A1 (en)
MY (1) MY134872A (en)
TW (1) TWI234452B (en)
WO (1) WO2004049995A1 (en)

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CN1303960C (en) 2007-03-14
WO2004049995A1 (en) 2004-06-17
KR20050084841A (en) 2005-08-29
AU2003284529A1 (en) 2004-06-23
KR100904473B1 (en) 2009-06-24
MY134872A (en) 2007-12-31
JP2004181086A (en) 2004-07-02
JP4198978B2 (en) 2008-12-17
TWI234452B (en) 2005-06-21
TW200423909A (en) 2004-11-16

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