CN103619294A - Absorbent article - Google Patents

Absorbent article Download PDF

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Publication number
CN103619294A
CN103619294A CN201280032331.2A CN201280032331A CN103619294A CN 103619294 A CN103619294 A CN 103619294A CN 201280032331 A CN201280032331 A CN 201280032331A CN 103619294 A CN103619294 A CN 103619294A
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CN
China
Prior art keywords
back side
dough sheet
positive dough
sheet
recess
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
CN201280032331.2A
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Chinese (zh)
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CN103619294B (en
Inventor
福田优子
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kao Corp
Original Assignee
Kao Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP2011151210A external-priority patent/JP5806867B2/en
Priority claimed from JP2011258874A external-priority patent/JP5820706B2/en
Priority claimed from JP2012025123A external-priority patent/JP5882770B2/en
Application filed by Kao Corp filed Critical Kao Corp
Publication of CN103619294A publication Critical patent/CN103619294A/en
Application granted granted Critical
Publication of CN103619294B publication Critical patent/CN103619294B/en
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—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
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51104—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • 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
    • A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations
    • 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

Landscapes

  • 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)

Abstract

Provided is an absorbent article comprising a liquid permeable top sheet disposed on a skin-contacting surface side, a back sheet disposed on a non-skin-contacting surface side, and an absorber interposed between the two sheets, wherein the top sheet is made from a nonwoven fabric, and the absorber has an absorbent core and a coating sheet that coats the core. A plurality of back surface concave portions that cave in toward the skin-contacting surface side are distributed adjacent to one another on the non-skin-contacting surface side of the top sheet, the coating sheet extends into the back surface concave portions, and there is a space portion between the coating sheet that extends into the concave portions and the absorbent core.

Description

Absorbent commodity
Technical field
The present invention relates to the absorbent commodities such as disposable diaper, urine absorbent pad, sanitary napkin, light incontinence pad.
Background technology
In the absorbent commodities such as disposable diaper, constantly improve material and the structure of each parts, to realize the raising of its function and wearing feeling.For example, for the positive dough sheet as parts and absorber, also seek above-mentioned improvement and develop, particularly motion recently has the corresponding functional article of various raisings and behaviour in service or type of goods.In addition, in order to obtain good wearing feeling, carrying out keeping the skin contact part of diaper and the distance of absorber to increase the research of the component thickness of outward appearance always.Thus, can suppress to rise to the humidity of returning in liquid and diaper of article skin contact face side.Particularly, have and under positive dough sheet, be laminated with the article of sublayer or align article that dough sheet carries out concavo-convex figuration, by crimping etc., make this figuration sheet engage fixing article etc. with other non-woven fabric plate by embossing etc.
In patent documentation 1, disclose that a kind of absorber itself is close to positive dough sheet and the absorbent commodity that forms concaveconvex shape.Thus, think and can improve the inside mobility of liquid and realize soft sense of touch.In patent documentation 2, disclose a kind of in the excretion opposed area of sanitary napkin absorber there are the article from skin contact face side to a plurality of recesses of inside.In Gai sanitary towel, it is large that the surface area of the skin contact face side of absorber becomes, and with recess, catches liquid and introduce to inside, therefore, thinks that suppressing liquid makes an absorbability excellence in the diffusion of skin face side.This is to realize owing to improving the shape of absorber itself.
In patent documentation 3, disclose a kind of for improve diaper waist property next to the skin, breathability and flexibility and at the veutro portion of diaper and drosal part, form the article of the waist gauffer being formed by composite extensible.At this composite extensible, be disposed at a plurality of elastomeric elements between two synusia of waist portion and be made as on-fixed beyond in width end, and do not hinder retractility.By tightening up of above-mentioned elastomeric element, make the two sides of two synusia outstanding round about respectively, become the pleat of a plurality of long side directions.Thus, can realize breathability or flexibility.
In patent documentation 4, disclose a kind of diaper, it sets a pair of waist alar part stretching out to width foreign side in the dorsal part region that becomes waist, the interior side of this waist alar part, is provided with waist elongated area.Thus, the poor mode of girth of thinking to supplement waist and hip circumference stretches elongated area and improves property next to the skin.
In patent documentation 5, disclose a kind of positive dough sheet having by the two-layer sag and swell forming.This positive dough sheet has and is formed with the middle section of a plurality of protuberances, recess and the lateral region of these middle section both sides.By utilizing hot-rolling that the recess of the upper synusia of above-mentioned middle section and lower synusia are heated, pressurizeed, make two-layer firmly fixing.Thus, above-mentioned positive dough sheet has the protuberance of height in middle section stable maintenance, has higher time liquid preventive.And, think and utilize liquid can access higher anti-leakage to the good lateral region of the movement of absorber.
In addition, in patent documentation 6, disclose a kind of by thering is the two-layer positive dough sheet forming that utilizes the concaveconvex shape that discaling roll forms.Think and utilize the drain recess of the skin contact face side of being located at above-mentioned positive dough sheet to reduce the liquid flow in skin contact face side, make breathability and resiliency excellent.
Prior art document
Patent documentation
Patent documentation 1:(Japan) JP 2009-119022 communique
Patent documentation 2:(Japan) JP 2008-18048 communique
Patent documentation 3:(Japan) JP 2008-132023 communique
Patent documentation 4: No. 2009/104581st, International Publication
Patent documentation 5:(Japan) JP 2009-118920 communique
Patent documentation 6:(Japan) JP 2009-89965 communique
Summary of the invention
The invention provides a kind of absorbent commodity, it is characterized in that, positive dough sheet and other parts with back side recess combine in interactional mode.
The invention provides a kind of absorbent commodity, its have the liquid permeability that is disposed at skin contact face side positive dough sheet, be disposed at the back sheet of non-skin contact face side and the absorber arranging between these two sheets, in this absorbent commodity, above-mentioned positive dough sheet consists of non-woven fabrics, above-mentioned absorber has absorbent core and covers the emulsion sheet of this absorbent core, in the non-skin contact face side of above-mentioned positive dough sheet, a plurality of back side recesses to skin contact face side depression are adjacent to decentralized configuration.Above-mentioned emulsion sheet enters into this back side recess, between the emulsion sheet entering and above-mentioned absorbent core, has spatial portion at this.In addition, in the long side direction end of above-mentioned absorber foreign side, be equipped with the one variant part of the convex of establishing this absorber and being formed by above-mentioned positive dough sheet and above-mentioned back sheet of not being situated between.In addition, be equipped with the back side protuberance butt of ，Gai sublayer, sublayer and the above-mentioned positive dough sheet adjacent with above-mentioned back side recess between above-mentioned positive dough sheet and above-mentioned absorber, in this part, the fibre density of sublayer is higher than other parts.
About above-mentioned and further feature and advantage of the present invention, can be suitably with reference to accompanying drawing and according to following record and further clear and definite.
Accompanying drawing explanation
Fig. 1 schematically shows the local excision's axonometric chart as the disposable diaper of the preferred embodiment of absorbent commodity of the present invention from skin contact face direction.
Fig. 2-1(a) be the sectional view in the II-II line cross section shown in Fig. 1, (b) be by the local local amplification sectional view schematically showing that amplifies in the cross section of positive dough sheet, (c) be the local amplification sectional view that schematically shows the configuration relation of positive dough sheet and emulsion sheet.
Fig. 2-2nd, the replacement accompanying drawing photo in the cross section of the disposable diaper of shooting present embodiment.
Fig. 3 is the key diagram of relation that schematically shows positive dough sheet, emulsion sheet and the absorbent core of back side recess.
Fig. 4 utilizes partial cross section to be shown schematically in the axonometric chart of the positive dough sheet of using in the diaper of embodiment.
Fig. 5 is by Fig. 2-1(a) the local amplification sectional view that amplify to represent of the part of institute's uniform section.
Fig. 6 schematically shows to overlook to observe the back side recess of non-skin contact face side of positive dough sheet and the key diagram of the relation of back side protuberance.
Fig. 7 is the replacement accompanying drawing photo in cross section of taking the positive dough sheet of present embodiment
Fig. 8 means the key diagram of variation of the cross sectional shape of back side recess.
Fig. 9 means the key diagram of variation of the cross sectional shape of positive dough sheet.
Figure 10 means the key diagram of the variation of absorbent core.
Figure 11 schematically shows embodiment 1 and 2 and the key diagram of the disperse state of the liquid of comparative example 1 and 2.
Figure 12 schematically shows embodiment 1 and 2 and the key diagram of the disperse state of the liquid of comparative example 1 and 2.
Figure 13 schematically shows the local excision's axonometric chart as the disposable diaper of another preferred embodiment (the second embodiment) of absorbent commodity of the present invention from skin contact face direction.
Figure 14 is that excision axonometric chart is amplified in the part of schematically amplifying the end laminated section of the disposable diaper that represents the second embodiment.
Figure 15 (A) is the sectional view in the A-A line cross section of Figure 14, is (B) sectional view in the B-B line cross section of Figure 14.
Figure 16 is by the local local amplification sectional view schematically showing that amplifies in the cross section of the end laminated section of Figure 15.
Figure 17 schematically shows top, the turning point at interface of one variant part of Figure 15, the key diagram of steering direction.
Figure 18-1 mean the second embodiment end laminated section variation, scheme accordingly with Figure 15 and 17.
Figure 18-2 mean the second embodiment end laminated section another variation, scheme accordingly with Figure 15 and 17.
Figure 18-3 mean the second embodiment end laminated section another variation, scheme accordingly with Figure 15 and 17.
Figure 19 is the plane graph of another preferred example of planar alignment of one variant part that schematically shows the end laminated section of the second embodiment.
Figure 20 means the elongation of end laminated section and the key diagram of flexible state of the second embodiment.
Figure 21 is the local amplification sectional view in cross section that schematically shows the end laminated section of the positive dough sheet that uses Fig. 4.
Figure 22 means in the laminated section of the end of the second embodiment, is provided with the local amplification sectional view of the state of non-woven fabric plate between positive dough sheet and back sheet.
Figure 23 is the key diagram of cross sectional shape that schematically shows the end laminated section of embodiment 21 and comparative example 21～23 test body separately.
The replacement accompanying drawing photo of the state after Figure 24 means dripping of embodiment 21 and comparative example 21～23 test body separately and after tilting.
Figure 25 schematically shows local excision's axonometric chart of the disposable diaper of the another preferred embodiment (the 3rd embodiment) as absorbent commodity of the present invention from skin contact face direction.
Figure 26-1(a) be the sectional view in the II-II line cross section shown in Figure 25, (b) be the local amplification sectional view that schematically shows the configuration relation of positive dough sheet and sublayer.
Figure 26-2nd, the replacement accompanying drawing photo in the cross section of the disposable diaper of shooting the 3rd embodiment.
Figure 27 is the key diagram of relation that schematically shows positive dough sheet, sublayer and the absorber of back side protuberance.
Figure 28 amplifies by a part for institute's uniform section of Figure 26-1 the local amplification sectional view representing.
Figure 29 means the key diagram of variation of the cross sectional shape of positive dough sheet.
Figure 30 is the replacement accompanying drawing photo of the state after the test of the positive dough sheet of shooting embodiment 31 is implemented.
Figure 31 is the replacement accompanying drawing photo of the state after the test of the positive dough sheet of shooting comparative example 31 is implemented.
Symbol description
1 positive dough sheet
2 back sheets
21 protrusions (back sheet 2 enters into the part of the back side, the end recess 7w of positive dough sheet 1)
3 absorbers
31 absorbent cores
32,33 emulsion sheets
4 lateral plates
5 end laminated sections
51 one variant parts
52 one skin side variant parts
The non-skin side of 53 one variant part
6 sublayers
61 compact parts
62 parts of rarefaction
7 back side recesses
Back side recess on 7v absorber
The back side, 7w end recess (back side recess of the positive dough sheet 1 in end laminated section 5)
71 enter portion's (emulsion sheet 32 enters into the part of the back side recess 7 of positive dough sheet 1)
72 spatial portions
Spatial portion in 72v absorber
72w recess spatial portion (spatial portion on sublayer)
73 buffer gap portions
74 junction surfaces
8 back side protuberances
Back side recess on 8v absorber
The back side, 8w end protuberance (back side protuberance of the positive dough sheet 1 in end laminated section 5)
78 front protuberances
88 front protuberances
10,20,30 disposable diapers
The specific embodiment
The invention provides a kind of absorbent commodity, it further improves the absorbent properties of existing absorbent commodity, even if there is discharged liquid repeatedly or a large amount of discharged liquid, also can suppress liquid in the diffusion of positive dough sheet and promptly suck liquid to make it in absorber diffusion inside, thereby effectively absorb, keep liquid.In addition, the present invention also provides a kind of raising at the absorbent commodity of anti-leakage that is not provided with the part of absorber.In addition, the invention provides a kind of absorbent commodity, it increases the higher liquid imbedibility obtaining and prevents back on the basis of fluidity at the thickness producing based on stacking part by prior art, the humidity that also suppresses go back to liquid or article inside, and can further reduce that the liquid residue of issuable skin face side further alleviates the burden to wearer skin due to using state or excretion etc.
Below, based on its preferred embodiment (the first～three embodiment) be elaborated with reference to accompanying drawing.
In addition, for the back side of the present invention recess 7 and back side protuberance 8, the in the situation that of difference in the first embodiment and the second embodiment, with regard to its equipping position, particularly sometimes also two positions of the first embodiment are called on absorber to back side protuberance 8v on back side recess 7v and absorber, sometimes also two positions of the second embodiment are called to the back side, end recess 7w and the back side, end protuberance 8w.On the other hand, with regard to its equipping position, the back side recess 7 of the 3rd embodiment is the same with the first embodiment with back side protuberance 8, also referred to as protuberance 8v in the back side on back side recess 7v and absorber on absorber.In addition, sometimes do not distinguish yet, be only called back side recess 7 and back side protuberance 8.
In addition, for spatial portion 72 of the present invention, the in the situation that of difference in the first embodiment and the 3rd embodiment, with regard to its parts form, also the spatial portion of the first embodiment 72 is called to spatial portion 72v in absorber, also the spatial portion of the 3rd embodiment 72 is called to spatial portion 72w on recess spatial portion 72w or sublayer.In addition, be sometimes also only called spatial portion 72.
［ the first embodiment ］
Fig. 1 schematically shows the local excision's axonometric chart as the disposable diaper of the preferred embodiment (the first embodiment) of absorbent commodity of the present invention from skin contact face direction.Diaper shown in this figure is banding pattern disposable diaper, so that the diaper slight curvature state that (skin contact face side) observes from inner side of the state of plane earth expansion is represented.
First, the summary of the above-mentioned disposable diaper 10 of the first embodiment is described.
The disposable diaper 10 of the first embodiment has: be disposed at the liquid permeability of skin contact face side positive dough sheet 1, be disposed at the back sheet 2 of non-skin contact face side and between the absorber 3 arranging between them.Absorber 3 has absorbent core 31 and emulsion sheet 32 and 33.The skin contact side of absorbent core 31 and non-skin contact side are smooth shape.This skin contact face side is covered by emulsion sheet 32, and non-skin contact face side is covered by emulsion sheet 33, and this two emulsion sheet and absorbent core 31 are engaged by phased manner by spraying hot-melt adhesive etc.In addition, the width end of two emulsion sheets is engaged mutually in the both side edges foreign side of absorbent core.
Back sheet 2 its both side edges under deployed condition has the shape of the general hourglass of tightening up to the inside at long side direction (Y-direction) central part, form the profile of diaper.About the profile of this diaper 10, as its deployed condition, on long side direction (Y-direction), be divided into: be disposed at wearer veutro the F of veutro portion, be disposed at the drosal part R of dorsal part and be positioned at crotch bottom C between the two.Crotch bottom C comprises the region corresponding with the excretory portion of wearer (excretory portion corresponding region).Back sheet 2 can consist of 1 sheet, also can form by a plurality of.The mode that covers the upside of this absorber 3 with positive dough sheet 1 on sheet 2 is overleaf equipped with positive dough sheet 1 and absorber 3.Positive dough sheet 1 and absorber 3 are respectively the width roughly oblong-shaped narrower than back sheet 2, and their long side direction and the long side direction of back sheet 2 are as one man configured.And then, from the long side direction both side edges of positive dough sheet 1, to width (directions X) foreign side, be laminated with a pair of lateral plate 4,4.Being formed with by the end of width central authorities the leakproof pad 41， width foreign side that disposes elastomeric element and being formed with respectively the leg creases 42 that disposes elastomeric element at lateral plate 4.Thus, can effectively prevent the side leakages such as liquid of the femoral joint part that the motion etc. of infant causes.In the diaper 10 of present embodiment, also functional structural portion or sheet material etc. can be further set.
At the F of veutro portion of diaper 10 and drosal part R, be formed with and be laminated with dorsal part alar part 17 and the veutro alar part 18 that lateral plate 4 and back sheet 2 ，Xiang width foreign sides stretch out.On dorsal part alar part 17, be provided with magic tape 19.This is attached to the band attaching portion (not shown) that is located at veutro alar part 18 with 19, can dresses fixedly diaper.Now, by the bending to the inside at leisure of diaper long side direction central authorities, with absorber 3, along the buttocks from infant, spread all over to underbelly mode and dress.Thus, make Excreta by absorber 3, absorb and keep exactly.
The details such as material of above-mentioned positive dough sheet 1, back sheet 2, absorbent portion 3 are carried out aftermentioned, but in the present embodiment, from the body fluid of absorbing and excreting promptly and be delivered to the viewpoint of absorber and the viewpoint of the comfort level of sensation, positive dough sheet 1 is used hydrophilic hot-wind nonwoven cloth to form.In addition, as back sheet 2, by the parts of the difficult permeability of liquid, formed, for example, use and there is the formation such as poisture-penetrability film that breathability and liquid do not see through.The difficult permeability of above-mentioned liquid of the present invention is the character of instigating liquid to be difficult to see through, and comprises: water proofing property, hydrophobicity and opaque liquid.About absorber 3, absorbent core 31 is used the raw material consisting of paper pulp fiber and superabsorbent polymer to form, and emulsion sheet 32 and 33 is used the raw material that hydrophilic is higher to form.
In the present invention, unless otherwise specified, be that the face of the side contacting with human body is called to skin side or skin contact face or front, the face with its opposition side is called to non-skin face or non-skin contact face or the back side.In two faces, a side or its extending direction near skin side are called to skin face side, skin contact face side or face side, a side or its extending direction near non-skin face are called to non-skin face side, non-skin contact face side or rear side.The direction that is positioned at the front side of human body during by wearing is called the place ahead, and using its end as leading section, the direction that is positioned at rear side is called to rear, and its end is described as rearward end.The normal direction at the front of absorbent commodity or the back side is called to thickness direction, its amount is called to thickness.And then, during by the overlooking of absorbent commodity, from veutro portion, spreading all over crotch bottom to the direction of drosal part and be called longitudinal direction or long side direction, direction that will vertical with this (long limit) direction quadrature is called width.In addition, above-mentioned longitudinal direction is typically under wearing state consistent with the fore-and-aft direction of human body.
Then,, with reference to Fig. 2-1 and Fig. 2-2, the cross sectional shape of diaper 10 is described.(a) of Fig. 2-1 is the sectional view in the II-II line cross section shown in figure l, (b) be the local amplification sectional view that local amplification the in the cross section of positive dough sheet schematically shown, (c) be the local amplification sectional view that schematically shows the configuration relation of positive dough sheet and emulsion sheet.Fig. 2-2nd, the photo that the replacement accompanying drawing that the cross section of the disposable diaper 10 of present embodiment is taken is used, represents that with central photo this cross section is whole, wherein, by back side recess 7v on the recess 7(absorber of the back side) 1 be amplified in lower right and represent.In the enlarged drawing of this back side recess 7, be positioned at the spatial portion 72(absorber spatial portion 72v of the part entering (the entering portion 71) below of emulsion sheet) be expressed as the part of being surrounded by broken circle.In addition, absorbent core 31 is the fiber aggregates that consist of paper pulp fiber etc., the fine fluctuatings such as the flanged outward fibre pick of its outer surface tool.Therefore, Fig. 2-1(a) in, the approximate range using the profile of the profile of absorbent core 31 as fiber aggregate represents (identical in Fig. 3 and 5) with double dot dash line.
As Fig. 2-1(a) as shown in, the cross sectional shape of diaper 10 is that positive dough sheet 1 and emulsion sheet 32 have concaveconvex shape with respect to absorbent core 31.By this shape, the particularly structure with the parts of its below based on back side recess 7, can realize the lifting of the raising of following liquid imbedibility and the liquid diffusibility of absorber inside and liquid immobilization speed.With reference to Fig. 2-1(b) and (c), further the cross sectional shape of this positive dough sheet 1 and emulsion sheet 32 is described.
As Fig. 2-1(b) as shown in, in the non-skin contact face side of positive dough sheet 1, be formed with from non-skin contact face side (z 2) to skin contact face side (z 1) depression back side recess 7.This back side recess 7 with roughly uniformly-spaced adjacent and periodically dispose a plurality ofly, makes the non-skin contact face side of positive dough sheet 1 become concaveconvex shape by this configuration on in-plane.That is, between each back side recess, become from skin contact face side (z 1) to non-skin contact face side (z 2) outstanding back side protuberance 8.Here so-called " back side recess is adjacent to decentralized configuration to be had a plurality of " refers to that the aftermentioned top 7a of the concave bottom that becomes back side recess 7 and adjacent 7a disperse to set across bottom 7c, thus, each back side recess 7 is configured in the mode to all directions diffusion when overlooking.Not dispose abreast the depression of a plurality of strips.In addition, in present embodiment, in the skin contact face side of the positive dough sheet 1 corresponding with this back side recess 7, be formed with front protuberance 78, in the skin contact face side of the positive dough sheet l corresponding with back side protuberance 8, be formed with front recess 88.
As Fig. 2-1(c) and Fig. 2-2 as shown in, back side recess 7v on the back side recess 7(absorber of positive dough sheet 1) in be formed with the part protuberance of emulsion sheet 32 of the skin contact face side that covers absorber 3 and the portion that enters 71 that enters.As shown in the diaper 10 of present embodiment, at emulsion sheet 32 and absorbent core 31, by hot-melt adhesive discontinuously in engaged situation, preferably emulsion sheet 32 swells and becomes the portion of entering 71 between this bonding agent.And then, as Fig. 2-1(c) and Fig. 2-2 as shown in, back side recess 7v on recess 7(absorber overleaf) in emulsion sheet 32 and absorbent core 31 between be formed with spatial portion 72v in spatial portion 72(absorber).This spatial portion 72 is followed forming of the portion that enters 71 that the protuberance by emulsion sheet 32 produces.Enter portion 71,71 ... penetration depth (h 2) can be even, not only can there is the darker portion that enters as shown in Fig. 2-2, also can exist and become the cup depth of back side recess 7 (h 1) > enters the penetration depth (h of portion 71 2) the portion that enters (with reference to Fig. 2-1(c)).In this back side recess 7, preferably between positive dough sheet 1 and emulsion sheet 32, also forming gap, become the buffer gap portion 73 making from the impact mitigation of the power of positive dough sheet 1 side.
Back side recess 7 is depressions of the non-skin contact side of positive dough sheet 1, and is from top 7a, towards the side wall portion 7b of bottom 7c, to form (with reference to Fig. 2-1(b) by the positive dough sheet 1 caving in along this is formed).Such back side recess 7 consists of soft non-woven fabrics, therefore, may not necessarily be defined as geometrics completely, the cross sectional shape of the formed back side of side wall portion 7b recess 7 becomes and is similar to parabolical shape, and the spatial form of this back side recess 7 becomes and is similar to top 7a with the shape of circular cone or the frustum of a cone of circular arc.In addition, the three-dimensional shape of back side recess 7 can adopt any recess shapes of the shape that is not limited to present embodiment, for example, also can be the such shape of cone or cylinder.As shown in the embodiment, in the situation that the skin contact face side of positive dough sheet also has concaveconvex shape, coordinate the shape of skin contact face side to be preferably the shape as cone (circular cone, the frustum of a cone, pyramid, the frustum of a pyramid, oblique cone etc.).
In the present embodiment, top 7a is the extreme higher position (Z forming in the non-skin contact side of positive dough sheet 1 of inwall of solid space of back side recess 7 1direction) position, bottom 7c is the extreme lower position (Z in the same space 2direction) position.Therefore, in the concaveconvex shape of recess 7 and back side protuberance 8 alternate repetitions, the bottom 7c of back side recess is consistent with the top 8a of back side protuberance 8 overleaf.In addition, the top 8a of the top 7a of above-mentioned back side recess 7 or the 7c(back side, bottom protuberance) as the summit on curved surface, represent, but be not limited to this, its periphery also can be for plane.In this case, top 7a can be decided to be the highest place in the central point of this plane or plane, and the top 8a of the 7c(back side, bottom protuberance) can be decided to be minimum place in the central point of this plane or plane.In this definition, the degree of depth (h of above-mentioned back side recess 7 1) refer to the difference of height of the non-skin contact side of positive dough sheet 1, and be the distance (with reference to Fig. 2-1(b) from top 7a to bottom 7c).In addition, same, the above-mentioned degree of depth (h that enters portion 71 2) be from bottom 7c to the distance (with reference to Fig. 2-1(c) entering between the extreme higher position of skin contact face side of portion 71).
Then, with reference to Fig. 3 further to back side recess 7v on the back side recess 7(absorber of the basic structure part as present embodiment) be described in detail, and its action effect is narrated.Fig. 3 schematically shows back side recess 7v on the recess 7(absorber of the back side) in the key diagram of relation of positive dough sheet 1, emulsion sheet 32 and absorbent core 31.In Fig. 3, with (a) and (b) two kinds of modal representations.(a) in pattern, be the degree of depth (h that enters portion 71 2) than the cup depth (h of back side recess 7 1) shallow (h 2< h 1), with spatial portion 72v in spatial portion 72(absorber) together with form and to there is the degree of depth (h 3) buffer gap portion 73.(b) in pattern, be (h 1=h 2), although be formed with spatial portion 72, do not form buffer gap portion 73.
In arbitrary pattern at (a) of Fig. 3 and (b), back side recess 7v on the recess 7(absorber of the back side) all from the non-skin contact face side z of positive dough sheet 1 2towards skin contact face side z 1form, and the inner space of the absorber 3 of liquid retainability below the position near wearer skin is formed with positive dough sheet.Thus, liquid shortens to the distance that sees through of inner space, effective to improving liquid-absorbent.And then, because recess 7 overleaf has the portion of entering 71, therefore, make the emulsion sheet that hydrophilic is high become the position near skin, thereby can realize reliably discharged liquid to the rapid suction of absorbent core 31.From the viewpoint of this liquid imbedibility, the side wall portion 7b being preferably in back side recess 7 contacts with entering portion 71, is seamlessly close to and engages (following, be called junction surface 74) at its interface.Thus, enter portion 71 and can directly suck the discharged liquid that is positioned at positive dough sheet 1.Formation method as this junction surface 74, has by bonding methods such as hot-melt adhesives, but be preferably, do not form the film of bonding agent and is waited both fibers are carried out to a joint each other by spraying.Thus, can maintain the positive dough sheet 1 of the side wall portion 7b(being formed by liquid permeability non-woven fabrics) sparse fiber spacing from and liquid is seen through rapidly, and make the 71(of the portion that the enters emulsion sheet 32 that formed by the high raw material of hydrophilic) to produce the captivation of liquid and directly liquid is drawn into inside be absorbent core 31.The viewpoint that does not make its diffusion from rapid suction discharged liquid, the structure between the parts in this back side recess 7 is preferably the crotch bottom C that is at least disposed at diaper 10.
In order to make above liquid imbedibility effective, enter the degree of depth (h of portion 71 2) with respect to back side recess 7v on the recess 7(absorber of the back side) and cup depth (h 1) be preferably more than 50%, more preferably more than 75%.More than forming above-mentioned lower limit, can reduce the liquid residue of the particularly top 7a of positive dough sheet 1.In addition, in fact also may there is following situation: enter portion 71 to the penetration depth (h of back side recess 7 2) may not be even at each back side recess 7, or Gen Ju Qing Condition and be mixed with the back side recess 7 that is not formed with in fact the portion of entering 71.In this case, in the integral body of back side recess, preferably enter the degree of depth (h of portion 71 2) for the quantity of above-mentioned more than 50% portion that enters 71 is more than 50%, more preferably more than 70%.More than forming above-mentioned lower limit, can reduce the amount of liquid that touches skin after Liquid Absorption.
And then, in above-mentioned preferable range, become (h 2< h 1) (a) pattern in, when realizing the raising of liquid imbedibility, also can play intrinsic effect by thering is buffer gap portion 73, therefore preferably.Particularly, can make the power that applies from positive dough sheet 1 side relax the impact of absorber 3.In addition, back side recess 7v on back side recess 7(absorber in the position of close skin) top 7a might not contact with entering portion 71, thus, even if enter portion 71, contains moisture, also liquid can be suppressed back, thereby the good dry feeling of positive dough sheet 1 can be realized.On the other hand, become (h 2=h 1) (b) pattern in, from side wall portion 7b to top 7a, all enter portion 71, therefore from the viewpoint of liquid imbedibility for preferably.Therefore, about (a) pattern in recess 7 integral body of the formed back side of positive dough sheet 1 and (b) ratio of pattern (a)/(b), near the ratio that is preferably (b) pattern the portion of urinating coming into one's own at liquid imbedibility is higher, higher near pay attention to suppressing back being preferably the buttocks of liquid (a) pattern ratio.From paying attention to the viewpoint of liquid imbedibility, (a) pattern of the back side recess 7 forming near the positive dough sheet portion of urinating and (b) ratio of pattern (a)/(b) be preferably more than 4/6, more preferably more than 2/8.In addition, above-mentioned ratio (a)/(b) be preferably below 0/10.From paying attention to suppressing back the viewpoint of liquid, (a) pattern of the back side recess 7 forming near the positive dough sheet 1 buttocks and (b) ratio of pattern (a)/(b) be preferably more than 6/4, more preferably more than 8/2.In addition, above-mentioned ratio (a)/(b) be preferably below 10/0.
As mentioned above, recess 7 is formed with spatial portion 72v in spatial portion 72(absorber overleaf) ((a) of Fig. 3 and (b)).Spatial portion 72 can make the discharged liquid of the portion that enters 71 suctions in absorber 3 diffusion inside, thereby directly and is effectively absorbed by the broad face of absorbent core.Thus, make to improve from the infiltration rate of the discharged liquid of positive dough sheet 1, and can suppress the diffusion of liquid of the skin contact face side of positive dough sheet 1.In addition, even become a large amount of in the situation that the excretion of discharged liquid is instantaneous, spatial portion 72 also can temporarily keep the liquid from positive dough sheet l, becomes the adjustment valve of Liquid Absorption.And spatial portion 72 is different from the absorbent core 31 consisting of paper pulp fiber etc., its moisture holding capacity is lower, therefore can transmit rapidly liquid to absorbent core 31.Like this, although spatial portion 72 temporarily keeps liquid as the adjustment valve of liquid, can make space immediate recovery, therefore not only in the situation that a large amount of excretions, even in the situation that excretion repeatedly also can fully tackle.In addition, if the skin contact side of absorbent core 31 is smooth in fact shape, the effect of this spatial portion 72 becomes more effective, so preferably.Although the skin contact side of absorbent core 31 needn't be level and smooth, the roundlet of the fluffing of paper pulp fiber (with reference to Fig. 2-1(a) (ii) in figure) situation that arrives spatial portion 72 is preferred from making liquid carry out rapidly this point to the transfer of absorbent core.
(the degree of depth (the h of back side recess 7 1), enter the degree of depth (h of portion 71 2) and buffering clearance portion 73 the degree of depth (h 3) assay method)
The degree of depth (the h of back side recess 7 1) measurement be by the cross section of the positive dough sheet 1 by top 7a and bottom 7c is amplified, measure the tangent line t(of adjacent bottom 7c with reference to Fig. 2-1(c)) carry out with the distance of top 7a.Enter the degree of depth (h of portion 71 2) measurement be by entering the top 71a of skin contact face side protuberance of portion 71 and the distance measurement of the tangent line of above-mentioned bottom 7c is carried out.Both differences are made as to the degree of depth (h of buffer gap portion 73 3).（h 3＝h 1－h 2）。During measurement, amplification that the VH-3000 microscope of KEYENCE system carries out and the measurement of the point-to-point transmission measurement method after alignment settings have been carried out utilizing.Also can use ultramicroscope.
Like this, diaper 10 is to have both back side recess 7v on the recess 7(absorber of the back side) and enter spatial portion 72v in the high liquid inhalation power, spatial portion 72(absorber of portion 71) the convective structure of efficient liquid.; the structure of the portion that enters 71 of back side recess 7, emulsion sheet 32, spatial portion 72 and absorbent core 31 cooperatively interacts and plays a role; can suppress the liquid diffusion of skin side, and liquid is spread in the absorbent core 31 of absorber inside, absorb and keep liquid and make its immobilization reliably.Thus, can be suppressed at the liquid residue of positive dough sheet 1 side or return liquid, and realizing the good dry feeling to wearer skin.
In addition, can absorb in the absorbent core 31 that keeps liquid with broad face, liquid also broadens to the arrival area of back sheet 2 sides, and dampness can be discharged to outside efficiently from back sheet 2.Its result, the reduction of the diaper temperature being caused by the heat of vaporization of dampness can realize by the broad face of back sheet 2 sides, the moisture that can effectively suppress in diaper l0 inner (part of being surrounded by the skin of back sheet 2 and wearer) evapotranspires, thereby diaper 10 can the stewing wet sense of more difficult generation.
In order to realize above-mentioned action effect, Fig. 2-1(b) shown in the bottom 7c-bottom 7c of back side recess 7 between distance (r 1) with the degree of depth (h of back side recess 1) ratio (r 1/ h 1) be preferably more than 1/1, more preferably more than 10/8.In addition, above-mentioned ratio (r 1/ h 1) be preferably below 3/l, more preferably below 10/4.In addition, the pitch (w between the top 7a-7a of back side recess 1) with the degree of depth (h of back side recess 1) ratio (w 1/ h 1) be preferably more than 1/1, more preferably more than 10/8.In addition, above-mentioned ratio (w 1/ h 1) be preferably below 3/1, more preferably below 10/4.More than being made as above-mentioned lower limit, can be configured to the positive dough sheet structure that emulsion sheet easily enters, by being made as below the above-mentioned upper limit, can guarantee significantly the volume in space 72.
In positive dough sheet 1, preferably between back side recess 7,7, be provided with back side protuberance 8 as described above, and on protuberance 8, there is top 8a overleaf.In protuberance 8, as shown in Figure 3, positive dough sheet 1 is formed on contacting of top 8a with absorbent core 31 via emulsion sheet 32, can suitably suppress this contact area overleaf.Contact area by inhibition with this absorbent core 31, except making the diffusion of liquid on absorbent core 31 become smooth and easy, make infiltration rate shortens, also make the liquid that returns to positive dough sheet 1 side after Liquid Absorption be inhibited, match with the structure in above-mentioned back side recess 7, be further effectively suppressed at soaking of positive dough sheet 1.
And then in positive dough sheet 1, its skin contact face side is preferably fluctuating with back side recess 7 and back side protuberance 8 and is concatenated to form matchingly front protuberance 78 and front recess 88 and forms concavo-convex shape.Preferably, the concaveconvex shape of this back side, front one disposes a plurality of on in-plane, as positive dough sheet 1 integral body, forms irregular (with reference to Fig. 4) repeatedly in multiple directions.By the shape of this positive dough sheet 1, not only can reduce the contact area of absorbent core 31 and positive dough sheet 1, also can reduce the contact area of skin with the positive dough sheet 1 of wearer.By the minimizing of this contact area, further effectively suppress soaking of skin, and because the breathability of jog also improves, thereby also further effectively prevent stewing wet sense.In addition, if be concaveconvex shape on the two sides of positive dough sheet 1, for three-dimensional activity, follow well, show the three-dimensional resiliency supporting with point on two sides.If the top 78a of front protuberance 78 is the curve form with circular arc, combine with this resiliency, can obtain soft skin sense of touch.
In addition, preferably, the concaveconvex shape of positive dough sheet 1 as shown in Figure 4, is formed with from front protuberance 78 towards the downward-sloping side wall portion 88b(=78b of front recess 88), make front recess 88 become independently mortar shape or cup-shaped.Thus, the catching of discharged liquid and fluid absorbent are more effectively promoted.About this point, with reference to Fig. 5, describe.
Fig. 5 is by Fig. 2-1(a) the local amplification sectional view that amplify to represent of the part in fixed cross section.In addition, with respect to the concavo-convex row (k representing as this cross section 1row), about the concavo-convex row (k of its inboard 2row), in order to understand liquid, see through, avoid numerous and diverse property, omit back side protuberance and only represent front protuberance.In present embodiment, for example, discharged liquid a 1than the top 78a of front protuberance 78 more easily along its side wall portion 78b(=88b) downward (arrow b 1) near the 88a of the top of front recess 88, accumulate, and be difficult to move to in-plane.Thus, can further suppress discharged liquid in the diffusibility of the skin contact face side of positive dough sheet l, and can make this discharged liquid on thickness direction, move to the position away from skin.In addition, the discharged liquid that moves to front recess 88 is the side wall portion 7b from this side wall portion 88b(=back side recess 7) via inner junction surface 74, attracted to and enter the 71(of portion arrow b 2), and suck to spatial portion 72.And liquid spreads (arrow b from spatial portion 72 to in-plane 3), to absorbent core 31, be transmitted (arrow b 4) and immobilization.In addition, arrow b 2to b 4it is the mechanism of action about the back side recess as above-mentioned basic structure part.Like this, the concaveconvex shape of front protuberance 78 and front recess 88 can make the function of back side recess 7 more effective.
In the non-skin contact face side of positive dough sheet l, preferably each back side protuberance 8 is surrounded and separate configuration on in-plane by a plurality of back sides recess 7, and the space of each back side recess 7 interconnects on in-plane.Above-mentioned separate configurations is not limited to that back side protuberance 8,8 leaves each other completely and completely separated, also comprises so long as at least 8a periphery in top is separated, and the situation that a part is connected.About it, preferably configure, with reference to Fig. 6, describe.
Fig. 6 is that the back side recess of non-skin contact face side and the relation of back side protuberance that align dough sheet are overlooked the key diagram of observing and schematically showing, and the configuration relation based on top 7a and 8a is simplified and modelling represents.Particularly, making the top 7a of back side recess 7 is white circular, and the top 8a that makes back side protuberance 8 is that dark circles represents.In Fig. 6, the region separately between the 7a-top 8a of 8a-top, top, between the 7a of 7a-top, top, between the 8a of 8a-top, top is side wall portion.Wherein, for understanding above-mentioned preferred configuration, the side wall portion in the region between the 8a of 8a-top, top is with the pictorial representation of elongated hourglass shape, and is made as symbol m.In addition, above-mentioned side wall portion is the part that forms continuously back side recess 7 and back side protuberance 8, also refers to any one in above-mentioned side wall portion 7b and 8b.
As shown in Figure 6, between 8a-top, the top 8a of protuberance 8, dispose side wall portion m overleaf.This side wall portion m is not the shape that connects the top 8a of back side protuberance 8 completely, but is preferably the elongated hourglass shape as shown in Figure 6 z of part in sheet thickness direction (Fig. 2-1(b) like that in the central 2to z 1direction) on the shape of tightening up.At this, tighten up part, although back side protuberance 8,8 not exclusively, but still divided and independent respectively, in the part of tightening up of side wall portion m, the space of back side recess 7 is connected.That is, in the non-skin contact face side of positive dough sheet l, between the 8a of 7a-top, top 8a-top, be not only concaveconvex shape, between the 8a of 8a-top, top, be also concaveconvex shape, form and connect back side recess 7,7 space each other.For example, as shown in Figure 7, preferably side wall portion m forms arciform.The space of each back side recess 7 is along the arciform state that can freely come and go as the hollow arrow marking in Fig. 6 or Fig. 7 each other that becomes of side wall portion m.If positive dough sheet 1 is this preferred shape, become the portion that enters 71 that forms emulsion sheet 32 along this shape, each spatial portion 72 of its below is interconnective structure also.Thus, the discharged liquid that is sucked into spatial portion 72 can hollow arrow as shown in Figure 6,7 gets around the pillar of back side recess 7 like that and free diffusing keeps discharged liquid and makes its immobilization thereby can absorb efficiently with the broader face of absorbent core 31.
In Fig. 3 of diaper 10 or the absorption process of the liquid shown in Fig. 5, preferably the fibre density of the non-woven fabrics of the positive dough sheet 1 in the recess of the back side has density contrast or the density gradient increasing from top 7a to bottom 7c.Thus, can make liquid see through rapidly from skin contact face side, more strongly liquid be absorbed.This density contrast, density gradient are for example by by Fig. 2-1(b) shown in institute's uniform section of back side recess 7 in from top 7a, spread all over bottom 7c positive dough sheet 1 form the height (h of back side recess 7 1) trisection (A portion, B portion, C portion), and each fibre density (n to them 1, n 2, n 3) on average compare and represent.The fibre density of A portion, B portion, C portion is preferably (n 1) < (n 2) < (n 3), its ratio (n 1/ n 2/ n 3) be preferably more than 2/6/10, more preferably more than 3/5/10.In addition, above-mentioned ratio (n 1/ n 2/ n 3) be preferably below 8/9/10, more preferably below 5/7/10.More than being made as above-mentioned lower limit, can guarantee that skin sense of touch is good, by being made as below the above-mentioned upper limit, can reduce the liquid residue of positive dough sheet 1.
(assay method of density)
Density (the n of the top 7a of the positive dough sheet 1 in above-mentioned back side recess 7, side wall portion 7b, bottom 7c 1, n 2, n 3) can measure by the following method.
The degree of depth (h with back side recess 7 1) be benchmark, the various piece of the part trisection of the positive dough sheet l from top 7a to bottom 7b is made as to A portion, B portion, C portion, the section that passes through top 7a and bottom 7b that uses following sweep electron microscope to align dough sheet carries out amplifying observation, and (fibre section is adjusted into the multiplying power that can measure 30 to 60, more than being 150 times and below 500 times), by the above-mentioned section of every certain area, calculate the quantity in the cross section of cut fiber.Then, convert into about 1mm 2the number of cross sections of fiber, using it as fibre density (root/mm 2).Be determined at three places and carry out, in addition average, as the fibre density of this sample.
The JCM-5100(trade name of scanning electron microscope, NEC (strain) society system)
(variation of the cross sectional shape of back side recess and positive dough sheet)
In diaper 10, the cross sectional shape of back side recess 7 is not limited to aforesaid way (with reference to Fig. 2-1(b)), as long as there is aforesaid liquid absorbability, can form arbitrary shape.The top 7a that for example, can enumerate is as shown in Figure 8 the back side recess (c) that the back side recess (a) of steeple shape or back side recess (b), the top 7a with a plurality of top 7a are smooth, the back side recess (d) that top 7a bloats with respect to the width between side wall portion 7b, 7b etc.Equally, the cross sectional shape of positive dough sheet 1 is not limited to the concaveconvex shape of present embodiment, as long as can realize back side recess and the emulsion sheet 32 of its below and the configuration relation of absorbent core 31, can be made as arbitrary shape.For example, can enumerate that 7,7 smooth of shape (a), back side recesses of skin contact face side as shown in Figure 9 leaves and the shape (b) of the top flat of back side protuberance etc.In the situation that as the shape of Fig. 9 (b), the bottom 7c of back side recess 7 is cross sections of the plane at 8a place, top of back side protuberance 8 and the curved surface of the side wall portion 7b of back side recess 7.
(variation of absorbent core)
And then in diaper 10, the shape of absorbent core is not limited to the slab-sided shape of skin contact of present embodiment, can at random adopt can make to enter into inner liquid long range diffusion and be promptly absorbed and keep and immobilized shape.For example, as shown in figure 10, can enumerate the absorbent core 90(Figure 10 (a) being formed with the recess absorbent portion 94 that is connected the one side side of this outstanding absorbent portion 93 corresponding to recess 91 by the recess 91 of groove shape, the block outstanding absorbent portion 93 distinguished by this recess), 90a(Figure 10 (b)) etc.In the situation that using this absorbent core, suck in the liquid of spatial portion 72 and spread along recess 91 or the recess absorbent portion below it 94, absorb and remain in each outstanding absorbent portion 93 and be immobilized dispersedly.By this path, make liquid immobilization reliably in wider scope, be therefore difficult to produce the liquid that returns to positive dough sheet side.And then, in this absorbent core 90 and 90a, if be made as recess absorbent portion 94, be in a ratio of low grammes per square metre with outstanding absorbent portion 93, the liquid that can alleviate in recess absorbent portion 94 passes through resistance, liquid is easily spread, and can reduce liquid retainability, liquid easily moves to outstanding absorbent portion 93.In addition, from same viewpoint, the density of the outstanding absorbent portion 93 of the high grammes per square metre of density ratio of the recess absorbent portion 94 of preferred low grammes per square metre is low.This absorbent core 90 and 90a also can be made as skin contact face side by the arbitrary face in the face of the recess absorbent portion 94 of the face at recess 91 places, low grammes per square metre, and can configure arbitrarily according to the object of absorbent commodity.
In the situation that adopting absorbent core 90 or 90a, be preferably following configuration: at least at the crotch bottom C that comprises excretory portion corresponding region, spatial portion 72 in the spatial portion 72(absorber of recess 91 or recess absorbent portion 94 and back side recess 7) overlapping.Thus, the liquid in spatial portion 72 easily moves to recess 91 or recess absorbent portion 94, and easily spreads rapidly and be immobilized.
(back side recess 7 and the formation method that enters portion 71)
The absorbent commodity that has back side recess 7 and enter portion 71 as shown in Fig. 2-2 can obtain in the common manufacturing process of this article.For example, can form in the following way, that is: stacked stage of absorber and positive dough sheet in the assembling process of diaper, so that the mode that positive dough sheet 1 is connected to above-mentioned backer roll is directed in above-mentioned sandwich to be formed with between the backer roll of jog and the backing roll of configuration relative to this backer roll, pressurize partly and heat.Now, preferably by plane-of-weakness joint type spray, spiral coating etc. apply hot-melt adhesive carry out bonding discontinuously so that the non-woven fabrics of positive dough sheet 1 is close to formation back side recess with emulsion sheet.In addition, preferably between emulsion sheet and absorbent core by spiral coating etc. and more sparsely bonding.Preferably the bonding agent between this positive dough sheet and emulsion sheet is coated with density (q 1) than the coating density (q of the hot-melt adhesive between emulsion sheet and absorbent core 2) higher, its ratio (q 1/ q 2) be preferably more than 2/1, more preferably more than 3/1.In addition, above-mentioned ratio (q 1/ q 2) be preferably below 10/1, more preferably below 5/1.And then, in the situation that forming back side recess by above-mentioned backer roll, the concaveconvex shape having in advance as shown in Figure 4 if use or the figuration sheet of concaveconvex shape as shown in Figure 9, and use there are the parts of fibre pick or have pleat or pleat stricture of vagina the parts with retractility as emulsion sheet, can more improve positive dough sheet l and the close property that enters portion 71 in the recess of the back side, can form the portion that enters 71 that enters deeplyer, therefore preferably.
The manufacture of above-mentioned figuration sheet can be carried out as follows.The fibre web carrying out before welding is supplied to fibre web size enlargement apparatus to form fixed thickness from carding machine, above-mentioned fibre web is fixed on and there are a plurality of projections and have on the pedestal of breathability.Then, with each fiber suitably the temperature of welding to the fibre web blowing hot-air on this pedestal, according to the projection in said base, to fibre web figuration, and make each fiber welding.The temperature of hot blast is now preferably with respect to the higher temperature of fusing point that forms the thermoplastic fibre of fibre web, and its temperature difference is preferably more than 0 ℃, more preferably more than 5 ℃.In addition, said temperature is poor to be preferably below 70 ℃, more preferably below 50 ℃.As thermoplastic fibre, such as enumerating: the TPO such as polypropylene, polyethylene, polyesters, nylon 6, nylon 66 etc. are polyamide-based, polypropylene nitrile etc. or the two or more core-sheath-type that comprises them, the composite fibre of parallel type etc.As thermoplastic fibre, in the situation that the composite fibre that use comprises low melting point composition and high-melting-point composition, it is above and lower than the fusing point of high-melting-point composition that the temperature that blows to the hot blast of fibre web is preferably the fusing point of low melting point composition.More than the temperature that blows to the hot blast of fibre web is preferably fusing point+0 ℃ of low melting point composition, more preferably more than fusing point+5 of low melting point composition ℃, be preferably below fusing point-10 ℃ of high-melting-point composition, more preferably below fusing point-20 of high-melting-point composition ℃.More than the content of the thermoplastic fibre of fibre web and non-woven fabrics is preferably 30 quality %, more preferably more than 40 quality %.In addition, above-mentioned thermoplastic fibre content is preferably below 100 quality %, more preferably below 80 quality %.Fibre web and non-woven fabrics also can comprise the fiber (natural fibers such as cotton or paper pulp, artificial silk or acetate fiber etc.) originally without thermal welding.
From the viewpoint of plastic property and feel, the wind speed of hot blast when fibre web is carried out to figuration is preferably made as 20m/ more than second, is more preferably made as 30m/ more than second.In addition, above-mentioned wind speed is preferably made as 130m/ below second, is more preferably made as 100m/ below second.If wind speed be this more than lower limit, third dimension becomes fully, can give full play to the effect of resiliency and Excreta catching, so preferably.If wind speed be this below higher limit, not perforate of sheet and can maintain well resistance against compression, therefore can give full play to the effect of resiliency and Excreta catching, so preferred.
If consider, produce continuously, can enumerate said base is made as to conveyor type or the drum-type that can carry, by roller, constantly batch the figuration that transports the mode of non-woven fabrics.In addition, about the non-woven fabrics of present embodiment, no matter which side in MD direction and CD direction all can.
As the formation material of positive dough sheet 1, back sheet 2, absorber 3 and lateral plate 4, can use the material conventionally using in absorbent commodity.
As positive dough sheet l, for example preferably use hydrophilic non-woven, the non-woven fabrics that is preferably called as hot-wind nonwoven cloth, sticky (pointbond) non-woven fabrics of point, spun-bonded non-woven fabrics, spun-laced nonwoven fabric, stereo type non-woven fabric, its fiber is preferably the fiber that was implemented hydrophilicity-imparting treatment with the natural fibers such as cotton or polyacrylic ultimate fibre, polypropylene and poly composite fibre, polyethylene terephthalate and poly composite fibre etc., and its grammes per square metre is 15g/m 2above 50g/m 2below.In addition, part under the crotch of positive dough sheet 1, hydrophilic apertured film or hydrophilic non-woven can be overlapped in the non-skin face side of positive dough sheet 1 partly.
As back sheet 2, as long as for example there is water proofing property and there is poisture-penetrability, be not particularly limited, such as enumerating by hydrophobic thermoplastic resin, with the small inorganic filler that contains calcium carbonate etc. or do not there is the melting mixings such as organic polymer of intermiscibility and form film, this film single shaft or twin shaft are extended and the porous membrane that obtains.As above-mentioned thermoplastic resin, can enumerate polyolefin.As this polyolefin, can enumerate height～Low Density Polyethylene, wire Low Density Polyethylene, polypropylene, polybutene etc., they can be used alone or mix rear use.
As absorber 3, can use the absorber conventionally using in absorbent commodity.Particularly, as absorbent core, such as using fiber aggregate, maybe this fiber aggregate and superabsorbent polymer together be used and absorbent core of obtaining etc.Fiber as forming fiber aggregate, can be used the hydrophilic natural fibers such as paper pulp fiber or synthetic fibers (being preferably the fiber of having implemented hydrophilicity-imparting treatment) etc.Grammes per square metre is not particularly limited, and is preferably 150g/m 2above and 500g/m 2below.
In addition, as the emulsion sheet that covers absorbent core, such as can use paper (paper of thin thickness) that hydrophilic thin paper etc. is thinner, crimped paper, the non-woven fabrics being formed by hydrophilic fibres such as cotton or artificial silks, to the fiber of synthetic resin implement non-woven fabrics that hydrophilicity-imparting treatment forms, such as comprising hot-wind nonwoven cloth, some bonded non-woven fabrics, spun-laced nonwoven fabric, spun-bonded non-woven fabrics, spin the sheet of SMS-spunbond (SMS) non-woven fabrics etc.
As above-mentioned lateral plate 4, be for example preferably hydrophobicity non-woven fabrics, particularly, can use spun-bonded non-woven fabrics, (SM) non-woven fabrics that spins SMS, spin SMS-spunbond (SMS) non-woven fabrics etc.Elastomeric element or leg creases elastomeric element for three-dimensional gauffer as lateral plate 4, can use the common elastomeric element using in this kind of article, for example, as raw material, can enumerate: the synthetic rubber such as styrene-butadiene, butadiene, isoprene, neoprene, natural rubber, EVA, retractility polyolefin, polyurethane etc., as form, can use cross section for rectangle, square, circle, polygon-shaped etc. wire or the form of band shape (flat rubber etc.), or the form of the wire of multifilament type etc.
Absorbent commodity of the present invention be by make above-mentioned back side recess and enter emulsion sheet wherein and this emulsion sheet and absorbent core between Existential Space portion, and thereby the liquid diffusion that is suppressed at positive dough sheet side improves liquid to inner inhalation power, and then can make sucked liquid spread in absorbent core, make liquid rapidly in inner immobilization.Therefore, absorbent commodity of the present invention can be obtained the action effect of following excellence, that is: further improve the absorbent properties of existing absorbent commodity, even if having discharged liquid repeatedly or a large amount of discharged liquid, also can be suppressed at the diffusion of the liquid of positive dough sheet side, suck rapidly liquid simultaneously and impel it in absorber diffusion inside and by it, effectively to absorb maintenance, thus, suppress soaking of skin, thereby bring good wearing feeling.
In absorbent commodity of the present invention, as long as absorbent core has, Liquid Absorption is remained on to its inside and makes its immobilized function, be not limited to the absorbent core of above-mentioned embodiment, for example also can be the slim absorbent core of lamellar.In addition, in absorbent commodity of the present invention, as long as emulsion sheet has at least skin contact face side that covers above-mentioned absorbent core, there is the function that transmits liquid to above-mentioned absorbent core, be not limited to the emulsion sheet of above-mentioned embodiment, for example also can be for possessing the parts of liquid diffusion, be also not limited to monolayer in addition and can be multilamellar.
Absorbent commodity of the present invention is not limited to the flat type disposable diaper of above-mentioned embodiment, can be the article that comprise the relation with positive dough sheet, emulsion sheet and absorbent core, for example also can be pull-on disposable diaper, or pull-on disposable diaper and by a part fracture diaper as banding pattern, can be also urine absorbent pad or sanitary napkin, protective pad, light incontinence pad in addition.In addition, absorbent commodity of the present invention is not limited to menses effective, also effective to urine in addition, leucorrhea, soft stool etc.In addition, absorbent commodity of the present invention also can correspondingly suitably be assembled other parts according to purposes or function in the article of present embodiment.
Then, the disposable diaper 20 with reference to Figure 13～22 pair the second embodiment as absorbent commodity of the present invention describes.The diaper 20 of the second embodiment is characterised in that, except the formation of the diaper 10 of above-mentioned the first embodiment that comprises the positive dough sheet with back side recess, further there is the positive dough sheet l in the long side direction outside (end laminated section 5) that is positioned at absorber 3 and the one variant part 51 of back sheet 2.
Below, omit the part repeating with above-mentioned the first embodiment, the second embodiment of the present invention is described.In addition, above-mentioned the first embodiment not has independent and exclusive relation with this second embodiment, for example, can orientate the second embodiment as mode in the subordinate concept that is contained in above-mentioned the first embodiment.In addition, the invention of the first embodiment is to have based on identical or corresponding specified features to form single inventive concept the technical relation that is mutually related with the invention of the second embodiment.Existence is to the mark same-sign situations that also description thereof is omitted such as same parts (wherein, size or detailed position relationship are with reference to accompanying drawing corresponding to the embodiment with separately).
Figure 13 schematically shows local excision's axonometric chart of the disposable diaper of the preferred embodiment (the 3rd embodiment) as absorbent commodity of the present invention from skin contact face direction.Diaper shown in this figure is the disposable urine napkin of banding pattern, with by the diaper slight curvature of the state of planar development, and the state representation that (skin contact face side) observes from inner side.
First, the summary of the disposable diaper 20 of the second embodiment is described.
The disposable diaper 20 of the second embodiment has the essentially identical component parts of diaper 10 (positive dough sheet 1, back sheet 2, absorber 3 and lateral plate 4 etc.) with the first embodiment.But, in Figure 13, for fear of numerous and diverse property and and the absorbent core of not shown formation absorber 3 and the differentiation of emulsion sheet, but absorber 3 integral body are represented as 1 parts.
The disposable diaper 20 of the second embodiment is from the different of disposable urine napkin 10 of the first embodiment, disposes the formation this point of one variant part 51 in the long side direction foreign side of absorber 3.About this point, be described below.
Long side direction (Y-direction) length of positive dough sheet 1 and back sheet 2 is consistent, and longer than the length of absorber 3.In the long side direction end of absorber 3 3a,3a foreign side, the stacked and laminating (this part is called to end laminated section 5) in absorber 3 ground be not set between positive dough sheet 1 and back sheet 2.This applying method can adopt the method for using in this article, for example can be by hot-melt adhesive being carried out to atomizing coating and engaging discontinuously.In the situation that this atomizing applies, scalable coating amount and coating density suppress rigidity, make two sheet sets firmly integrated.End laminated section 5 is positioned at the F of veutro portion and the drosal part R of diaper 20, is disposed at the waist of wearer when dressing diaper 20.While dressing diaper 20, end laminated section 5 becomes from the long side direction end 3a side of absorber 3 to long side direction end 20a, the 20a of the diaper configuration consistent with the height direction of wearer.The details of this end laminated section 5 are carried out aftermentioned.
Then, with reference to Figure 14, the end laminated section 5 in diaper 20 is described.As shown in figure 14, comprise a plurality of one variant parts 51 in the end laminated section 5 of diaper 20, this one variant part 51 is by together with the opposite face of positive dough sheet l and back sheet 2 is under the state of laminating and be integratedly convex distortion form on thickness direction.In each one variant part 51, as long as positive dough sheet 1 and back sheet 2 are out of shape on identical thickness direction, one variant part 51,51 ... the large I of amplitude of distortion each other needn't be consistent.In diaper 20, one variant part 51 is by forming to the side-prominent one skin side variant part 52 of skin contact face with to the side-prominent non-skin side of the one variant part 53 of non-skin contact face.In each one variant part 51, form the state that above-mentioned two horizontal planes with respect to the non-skin side of absorber 3 turn to towards skin side or non-skin side partly." one " of one variant part 51 refers to that positive dough sheet 1 and back sheet 2 form the convex shaped part that is combined into as duplexer, and the situation that is not limited to seamlessly be close to also can the interface between two has the trickle gap of the degree that can hinder liquid diffusion.In addition, so-called " one ", if from other viewpoint, to be close to formation protuberance by two, even if make, end laminated section 5 is applied to various pressure etc., in one variant part 51, above-mentioned two are also carried out roughly the same distortion, can recover in fact in addition the shape of one variant part 51 when removing pressure.In addition, as long as can obtain above-mentioned integratedly, between two, can be provided with other parts.
As shown in figure 14, above-mentioned a plurality of one variant part 51 decentralized configuration on the in-plane of end laminated section 5." decentralized configuration " of this one variant part 51 refers to, one variant part 51 configures in the mode of mutually leaving and spread in all directions when overlooking.In the second embodiment, the one variant part of above-mentioned two kinds is alternately at long side direction (Y-direction) and width (directions X), above to form multiple row, and the arrangement of adjacent row above-mentioned two kinds of one variant parts each other forms the staggered arrangement of the half pitch that staggers.Like this, a plurality of one variant part 51 configures on a large scale in the face direction of end laminated section 5.
For the configuration of this one variant part 51, with reference to Figure 15, emphatically the long side direction cross sectional shape of end laminated section 5 is described.Figure 15 represent end 3a from absorber 3 towards the end of diaper 20 20a(with reference to Figure 13) the part in long side direction cross section, (A) being the local amplification sectional view in the A-A line cross section of Figure 14, is (B) the local amplification sectional view in the B-B line cross section of Figure 14.
At Figure 15 (A), mean, as a part for end laminated section 5,5 one skin side variant parts 52 and 4 the non-skin side of one variant parts 53 alternately form the figure that is listed as A and arranges on long side direction.In Figure 15, one skin side variant part 52 is to Z 1the convex shaped part that side turns to.The non-skin side of one variant part 53 is to Z 2the convex shaped part that side turns to.One skin side variant part 52 and the non-skin side of one variant part 53 are respectively through the opposing party's one variant part and configuration alternately.In addition, in Figure 15 (B), as a part for end laminated section 5, indicate the cross section of the row B adjacent with above-mentioned row A.In these row B, 4 one skin side variant parts 52 and 3 the non-skin side of one variant part 53 alternative arrangements.The arrangement of the variant part of row in B is to form and the arrangement that is listed as the variant part in the A half pitch that mutually staggers, to the one variant part of same directional steering to configure in the nonoverlapping mode of width.
By the arrangement of above-mentioned row A and B, end laminated section 5 integral body in long side direction cross section become the Z at thickness direction with the horizontal plane of the non-skin side with respect to absorber 3 1direction and Z 2the mode rising and falling in direction forms the shape of crawling.By this integrated distortion, form the positive dough sheet 1 of end laminated section 5 and the space between the opposite face of back sheet 2 and diminish.In addition, the interface that space is reduced forms the shape of crawling similarly.Therefore,, even in the situation that the antiperspirant of the situation that liquid spills from absorber 3 or skin or the dampness in diaper become moisture and be inhaled into from positive dough sheet 1, it is mobile like that liquid is also difficult to the arrow J of disconnection as shown in figure 16.That is the resistance that oozes out and soak diffusion of, constructing as the liquid in this interface by the minimization in integrated realized space and the shape of crawling at above-mentioned interface plays a role.In addition, crawl shape correspondingly with formation, the length of the long side direction Length Ratio end laminated section 5 at above-mentioned interface is long, contributes to form above-mentioned resistance.Thus, can effectively suppress liquid diffusion and leakage.In addition, the row A of the arrangement of the half pitch that staggers and B are alternately arranged with multiple row on width, also can by effect same as described above, effectively suppress liquid thus and spread on width.
Particularly at the wearer of putting on diaper, lie down or stand up etc. in the vicissitudinous situation of posture, sometimes becoming absorber 3 and end laminated section 5 with respect to state or the downward-sloping state of end laminated section 5 of bed surface almost parallel.In this case, by the effect of gravity or cause the compressing to absorber 3 by body pressure, liquid probably enters between the opposite face of two of above-mentioned end duplexer 5.
As prior art, if back sheet 2 is smooth, the resistance liquid being moved is lower, and surface tension and the capillary force on interface of the back sheet 2 by the difficult permeability of liquid make liquid easily soak diffusion.And then if having space, liquid easily flows.
In addition, the prior art of putting forward the property next to the skin that is high waisted etc. as shown in by above-mentioned patent documentation 3 and 4 etc., complicated etc. along with the increase of number of components, manufacturing process, also probably becomes the main cause that cost rises.In contrast, if waist is to comprise having the smooth back sheet of concavo-convex positive dough sheet peace, without complicated operation or appending of number of components, can give certain retractility.But, between this positive dough sheet and back sheet, produce and store for liquid or mobile space.In this part, absorber is not set, the absorption without liquid keeps function.Therefore, for example,, in the situation that dressing the child of diaper or needing care-giver, due to the state that keeps lying down, the posture of the wearer of movable health etc., is difficult to ensure that liquid can not flow and spill.
Yet, in the diaper 20 of the second embodiment, even in the situation that the posture of above-mentioned wearer, as shown in figure 15, the drag effect of the shape performance of crawling of the thickness direction at the interface of end laminated section 5 to liquid, and performance to liquid by gravity, caused to thickness direction (Z 1→ Z 2) suction effect, moving or soaking the barrier of diffusion and bring into play function (with reference to Figure 16) as antagonism liquid.In this situation, the minimization based on integrated implementation space, and can effectively suppress liquid diffusion and leakage.From this viewpoint, be preferably the opposite face of two, particularly its top 53a firm engagement in the non-skin side of one variant part 53 and get rid of space.
In the present invention, the shape of crawling (S shape curved shape) even be as end laminated section 5 whole be formed with fixing horizontal plane, also have many places with respect to this horizontal plane the shape to the part of different directions distortion.In addition, from another viewpoint, be also relatively at the non-skin side horizontal plane of absorber 3, to produce the shape of the turning point of a plurality of thickness directions towards end laminated section 5.Turning point is that the opposite face of positive dough sheet l and back sheet 2 changes nyctitropic starting point with respect to horizontal direction.About this point, with reference to Figure 17, describe.In Figure 17, conceptually schematically show top (the top 53a of the top 52a of skin contact face side, non-skin contact face side), turning point 54 and the steering direction G of each one variant part 51 in Figure 15.First, horizontal line FA and FB extend by the base of absorber 3 line forming, and are also the lines that is positioned at the thickness central authorities of end duplexer 5.The arrow of the left end of horizontal line FA and FB represents from absorber 3 towards the end of diaper 20 20a(with reference to Figure 13) direction.Turning point 54 is one variant parts 51 and horizontal plane FA and the crossing point of FB, with stain, represents.To be interfacial phase between two of turning point 54 medial end portions duplexers 5 change nyctitropic direction for the direction of arrow of horizontal line FA and FB to steering direction G, with arrow, represents.And, with stain, represent each top (the top 53a of the top 52a of skin contact face side, non-skin contact face side) in one variant part 51.The viewpoint of the drag effect moving from the liquid between two, the top of each one variant part 51 and turning point be take the border of two opposite faces and are represented as benchmark, and for convenient, the part that has gap between opposite face is to take the skin contact face side of back sheet 2 to represent as benchmark.In addition, from the same viewpoint, above-mentioned steering direction is to take with arrow, to represent as benchmark from absorber 3 towards the long side direction of diaper end 20a side.
Figure 17 (A) means the row A of Figure 15.At row, A has 10 turning points 54.The steering direction G of each turning point 54 is towards Z 1the steering direction Gl of direction with towards Z 2the steering direction G2 alternate configurations of direction.In addition, Figure 17 (B) means the row B of Figure 15.At row, B has 8 turning points 54.The steering direction G of each turning point 54 is towards Z 1the steering direction Gl of direction with towards Z 2the steering direction G2 alternate configurations of direction.Thus, the interface of two is following shape: though consistent with the direction of arrow of horizontal line FA as a whole, but still there are a plurality of starting points that amplitude occurs alternately up and down with respect to this horizontal line.
As shown in figure 17, the steering direction by a plurality of turning points is with Z 1direction and Z 2direction is alternately changed, and makes the long side direction cross section of end laminated section 5 form the shape of crawling, thereby can effectively bring into play above-mentioned effect.; so long as have the configuration that a plurality of turning points 54 of different steering directions form row, the quantity of one variant part 51 can be set arbitrarily, and its decentralized configuration is not limited to the rule configuration as shown in Figure 14 or Figure 15; also can be the configuration of Else Rule, and can be also irregular configuration.Configuration as Else Rule, for example, can be as shown in Figure 18-1 and clip horizontal part 55 between adjacent one variant part 51, also can be the combination of horizontal part as shown in Figure 18-2 55 with one skin side variant part 52, can be also the combination of horizontal part as shown in Figure 18-3 55 with the non-skin side of one variant part 53.In situation arbitrarily, all in a plurality of turning points, clip horizontal part 55 and make steering direction become Z 1direction and Z 2the one variant part of direction disposes a plurality of continuously, and the cross section of end laminated section 5 becomes with respect to horizontal line the shape of crawling.
And then, as the decentralized configuration on the in-plane of one variant part 51, be not limited to the configuration of rule as shown in Figure 14, can be also the configuration of Else Rule, or can be also irregular configuration.As Else Rule configuration, for example also a plurality of one variant parts 51 that turn on same thickness direction can be in the face that the is combined in direction of configuration radially, configure a plurality of.Particularly, also as shown in figure 19 the non-skin side of the one at ，Jiang center variant part 53 with around being combined in of its 6 one skin side variant parts 52 around, on in-plane, configure a plurality of.In this case, not only the long side direction of end laminated section 5 and width but directive cross section form the concaveconvex shape that becomes the shape of crawling with respect to horizontal line.
In addition, on end laminated section 5, (A) of the arrangement of width as shown in figure 14 or Figure 15 is with shown in combination (B), and one skin side variant part 52 and the non-skin side of one variant part 53 be alternate configurations on width also.Thus, if end laminated section 5 is applied to tensile force, as shown in figure 20, the one variant part 51 that positive dough sheet 1 and back sheet 2 become one will return to level and extend (with reference to Figure 20 (b)), will recover the shape of one variant part 51 originally shrink (with reference to Figure 20 (a)) by removing applied force.That is, one variant part 51 produces the contractility of end laminated section 5 integral body.Its result, even waist can not produce lax fastening fixingly securely when making to dress diaper 20, also can excessively not oppress the waist of wearer, thereby can guarantee the property next to the skin to waist by the retractility of end laminated section 5.Therefore, can obtain good wearing feeling.Like this, diaper 20 can meet simultaneously and realize higher anti-leakage and the property next to the skin based on contractility of waist.
When forming the end laminated section 5 of disposable diaper 20 of the second embodiment, preferably positive dough sheet 1 is the non-woven fabrics (with reference to Fig. 4) using in the first embodiment, and by until the region of end laminated section 5 is equipped with the structure of back side recess 7 forms.In this case, at end laminated section, the surrounding of recess 7 is also provided with back side protuberance 8 overleaf, back side recess 7 and back side protuberance 8 alternately on in-plane with roughly uniformly-spaced adjacent and periodically dispose a plurality of.
In addition, as mentioned above, in the second embodiment, back side recess in end laminated section 5 and back side protuberance are called to the back side, end recess 7w and the back side, end protuberance 8w according to its equipping position, are distinguished and describe with back side protuberance 8w on back side recess 7v and absorber on the absorber of l embodiment.Or sometimes also referred to as " back side recess 7w in end laminated section 5 " and " back side protuberance 8w in end laminated section 5 ", sometimes also do not distinguished especially and referred to as " back side recess 7w " and " back side protuberance 8w ".
In this case, with respect to the back side, the end recess 7w of positive dough sheet l, be formed with by a part for the back sheet 2 of formation such as film (the poisture-penetrability film that liquid does not see through) of the difficult permeability of liquid swell and the protrusion 21(that enters with reference to Fig. 2 l).This back side, end recess 7w and protrusion 21 are close to and the integrated and skin side variant part 52 that becomes one.Meanwhile, by the formation of protrusion 21, the shape distortion of back sheet 2 along the side wall portion 7b from the back side, end recess 7w to the downward positive dough sheet 1 of the top 8a of the back side, end protuberance 8w, thus form the non-skin side of one variant part 53.That is, take the mode consistent with the concaveconvex shape of the skin contact face side of positive dough sheet 1 is concaveconvex shape by back sheet 2 figurations.Therefore, at the back side, the end recess 7w of positive dough sheet 1 and the back side, end protuberance 8w, be essentially cone, particularly in the situation that the shape of circular cone or the frustum of a cone, one skin side variant part 52 and the non-skin side of one variant part 53 become the identical shape that approaches cone shape in the lump with the protrusion 21 of back sheet 2.This shape not only suppresses the diffusion of liquid at long side direction (directions X) or width (Y-direction) but also on multi-direction, easily embody multidirectional retractility, therefore preferably.From the viewpoint of the above-mentioned effect of one variant part 51, the penetration depth of protrusion 21 is preferably do not occur that as far as possible the mode in space arrives the top 7a of the back side, end recess 7w, but may not be defined in this, also can have the penetration depth (h of protrusion 21 4) than the cup depth (h of the back side, end recess 7w 1) shallow protrusion.If there is several this small gap, match with the flexibility that becomes the non-woven fabrics of positive dough sheet, make positive dough sheet soft with contacting of skin, therefore preferably.
The positive dough sheet 1 of the second embodiment and shape or the size of back sheet 2 are not particularly limited, according to slightly different in order effectively to bring into play the size of the absorbent commodity that above-mentioned suitable use sense used or purposes, and the degree of depth (h of the back side, end recess 7w 1) be preferably 0.4mm more than, more preferably more than 1mm.In addition, the degree of depth (h of the back side, end recess 7 1) be preferably below 4mm, more preferably below 3mm.In addition, the degree of depth (h of the protrusion 21 of back sheet 2 4) be preferably more than 0.2, more preferably more than 0.5.In addition, the degree of depth (h of protrusion 21 4) be preferably below 3.5mm, more preferably below 2mm.The degree of depth (the h of protrusion 21 4) with respect to the degree of depth (h of the back side, end recess 7w 1) be preferably more than 30%, more preferably more than 50%.More than being made as above-mentioned lower limit, can reduce the liquid residue of the particularly top 7a of positive dough sheet 1.In the overall quantity of the back side, end recess 7w, the degree of depth (h of protrusion 21 4) become above-mentioned more than 50% back side, end recess and preferably have more than 50%, more preferably have more than 70%, most preferably have more than 90%.And then, in the overall quantity of the back side, end recess 7w, the degree of depth (h of protrusion 21 4) quantity that becomes above-mentioned more than 100% back side, end recess is preferably more than 5%, more preferably more than 10%.More than being made as above-mentioned lower limit, can reduce the amount of liquid that touches skin after Liquid Absorption.
And then, in order to realize above-mentioned effect, the pitch (w between the top 7a-7a of the back side, end recess 7w 2) with the degree of depth (h of the back side, end recess 7w 1) ratio (w 2/ h 1) be preferably 1/l more than, more preferably more than 10/8.In addition, above-mentioned ratio (w 2/ h 1) be preferably below 3/1, more preferably below 10/4.More than being made as above-mentioned lower limit, can form entering of emulsion sheet and be easy to positive dough sheet structure, by being made as below the above-mentioned upper limit, can guarantee significantly the volume of spatial portion Q.
(the degree of depth (the h of the back side, end recess 7w 1), the degree of depth (h of protrusion 21 4) assay method)
The degree of depth (the h of the back side, end recess 7w 1) measurement be by the cross section of the positive dough sheet 1 by top 7a and bottom 7c is amplified, measure the tangent line t(of adjacent bottom 7c with reference to Figure 21) carry out with the distance of top 7a.The degree of depth (the h of protrusion 21 4) measurement be to be undertaken by measuring the distance of the skin contact face side protuberance 21a of protrusion 21 and the tangent line t of above-mentioned bottom 7c.The degree of depth (h using both differences as buffer gap portion 73 5) (h 5=h 1-h 4).During measurement, by utilizing the point-to-point transmission measurement method after KEYENCE VH-3000 microscope processed amplifies, sets based on calibration (calibrate) to measure.Also can use ultramicroscope.
(variation of the cross sectional shape of the back side, end recess 7w and positive dough sheet)
The cross sectional shape of the back side, end recess 7w and positive dough sheet 2 is not limited to aforesaid way, as long as the above-mentioned effect of performance can be made as arbitrary shape.For example, can adopt in the first embodiment with reference to Fig. 8 and 9 modes that illustrate etc.
(the formation method of one variant part 51)
At end laminated section 5, be formed with one variant part 51(one skin side variant part 52 and the non-skin side of the one variant part 53 as shown in Figure 14 or Figure 15) absorbent commodity can in the common manufacturing process at this article, obtain.For example, can form in the following way,, in the stage with back sheet 2 across the stacked positive dough sheet 1 of absorber 3, so that the mode of the positive above-mentioned backer roll of dough sheet 1 butt do not import to and be formed with between the backer roll of jog and the backing roll of configuration relative to this backer roll being provided with the positive dough sheet 1 of absorber and the laminated portions of back sheet 2, and pressurize and heat.Now, preferably by plane-of-weakness joint type spray, that the coating hot-melt adhesive such as spiral coating carries out discontinuity is bonding, forms one variant part 51 so that positive dough sheet 1 is close to back sheet 2.In addition, at this, form in operation, as shown in by above-mentioned the first embodiment, the non-woven fabric plate (with reference to Fig. 4) that figuration is concaveconvex shape in advance if use, can form well integrated one skin side variant part 52 and the non-skin side of one variant part 53 closely, therefore preferably.
The manufacture of the non-woven fabric plate of above-mentioned figuration can be undertaken by the method illustrating in the first embodiment.
In the second embodiment, preferably the positive dough sheet 1 of end laminated section 5 is close to and is contacted with the opposite face of back sheet 2, but also can be in the scope of function of not damaging one variant part 51, and the establishing that is situated between between two sheets is equipped with other parts.The interface of two sheets in the case refers between the opposite face of two sheets of other parts that comprising is situated between establishes.
As other parts, for example, can enumerate to strengthen the elastomeric element (not shown) of retractility of the waistline that comprises end laminated section 5 of diaper 20.The enhancing of the retractility of waistline is the object that is promoted to the property next to the skin for wearer of diaper, can obtain by configure a plurality of elastomeric elements that spread all over width between positive dough sheet 1 and back sheet 2.In diaper 20 before wearing, by the dorsal part alar part 17 of the both sides of drosal part R, 17(with reference to Figure 13) ventralward stretches and is fixed.Now, by the retractility of end laminated section 5 and the retractility of elastomeric element, easily along the bodily form of wearer, extend, can the appropriateness by fixedly time shrink and obtain good sense next to the skin.In addition, even health has activity after dressing, also easily with respect to the variation of the waist of wearer, follow neatly, thereby can maintain good property next to the skin.When elastic components contract, the positive dough sheet l of end laminated section 5 and back sheet 2 easily produce pleat stricture of vagina or pleat.Even in this case, in the end of the second embodiment laminated section 5, positive dough sheet 1 and back sheet 2 are close to and integrated, and a plurality of one variant parts 51 that turn on thickness direction are planar decentralized configuration, are therefore difficult to become pleat stricture of vagina or the pleat on long side direction.This pleat stricture of vagina or pleat are easy to disperse by one variant part 51 is divided.Thus, can effectively realize the enhancing of good retractility and the inhibition of liquid diffusion and leakage, and preferably.
The example of other parts of establishing as above-mentioned Jie, the big or small non-woven fabric plate 9 Jie's establishings that can enumerate the scope that is contained in end laminated section 5 are placed between positive dough sheet 1 and back sheet 2.The F of veutro portion and drosal part R that this non-woven fabric plate 9 can make to form the waistline of diaper 20 have thickness, are endowed soft skin sense of touch.And then as shown in figure 22, non-woven fabric plate 9 is along one variant part 51(one skin side variant part 52 and the non-skin side of one variant part 53) formed concavo-convex and by figuration and integrated.Thus, non-woven fabric plate 9 is also filled up small gap, and then becomes the resistance of liquid flow, can more effectively suppress liquid diffusion and leakage, therefore preferably.
Formation material as positive dough sheet 1, back sheet 2, absorber 3 and lateral plate 4, can be used the material being generally used in absorbent commodity.Particularly, can enumerate raw material routine shown in the first embodiment etc.In addition, as absorber 3, as long as have in absorbed inside, keeping liquid and make its immobilized function, can be not limited to above-mentioned absorber, for example, can be also the slim absorber of lamellar.
Absorbent commodity of the present invention is brought into play the excellent action effect of the anti-leakage of the part that can improve is not situated between establishes absorber.
Absorbent commodity of the present invention is not limited to the flat type disposable diaper of above-mentioned embodiment, can be widely used in positive dough sheet and back sheet at the absorbent commodity of the stacked structure of the foreign side of absorber.At this, positive dough sheet and back sheet are to be defined as, and the article end of putting absorber in the establishing that is not situated between is stacked and integrated, the liquid permeability sheet of skin contact face side and the sheet of non-skin contact face side directly or indirectly.As long as meet this definition, the form of positive dough sheet and back sheet is not limited to above-mentioned embodiment, and can adopt the sheet of various formations.As absorbent commodity of the present invention, if can either be for example pull-on disposable diaper or pull-on disposable diaper and the diaper that its part fracture can be used as banding pattern, can be also urine absorbent pad or sanitary napkin, protective pad, light incontinence pad in addition.In addition, absorbent commodity of the present invention is not limited to menses effective, also effective to urine in addition, leucorrhea, soft stool etc.
About another embodiment of absorbent commodity of the present invention, exemplify light incontinence pad and describe.Light incontinence pad comprises that while dressing, being disposed at the positive dough sheet of the liquid permeability of skin face side, the back sheet that is disposed at non-skin contact face side and Jie's establishing is placed in two absorbers between sheet, and is elongate shape (not shown).This incontinence pad is that the non-skin contact face consisting of back sheet is sticked on to fabric underclothes etc. and uses.Now, the long side direction of above-mentioned incontinence pad is set to buttocks from the hypogastric region of wearer.In the long side direction end of incontinence protection, being formed with is not situated between establishes this absorber and the end laminated section of stacked and fit positive dough sheet and back sheet directly or indirectly.The region that is provided with absorber with Jie between above-mentioned two sheet materials is compared, and the thickness of this end laminated section is less.Therefore, the in the situation that of existing incontinence pad, when being attached to underclothes and between skin, easily form space, be difficult to ensure that liquid does not occur to flow and spills.
But in the present invention, same with the embodiment of above-mentioned disposable diaper 20, in the laminated section of above-mentioned end, positive dough sheet and back sheet synthesize duplexer and are formed on the one variant part that is convex on the thickness direction of sheet and is out of shape.And, above-mentioned one variant part on width also alternate configurations have a plurality of.Thus, one variant part produces the contractility of end laminated section integral body and is close to skin, thereby can meet simultaneously and realize high anti-leakage and the property next to the skin based on contractility.
Then, the disposable diaper 30 with reference to Figure 25～28 pair the 3rd embodiment as absorbent commodity of the present invention describes.The diaper 30 of the 3rd embodiment is same with the diaper 10 of the first embodiment, uses the positive dough sheet l that disposes back side recess 7 and back side protuberance 8.In the 3rd embodiment, the viewpoint promoting from the absorbent properties of liquid, is characterized in that, has the distinctive structure that the back side protuberance 8 being surrounded by this back side recess 7 is combined together with back side recess 7 with sublayer 6.
In addition, above-mentioned the first and second embodiments not have independent and exclusive relation with this 3rd embodiment, for example, can orientate the 3rd embodiment as mode in the subordinate concept that is contained in above-mentioned the first and second embodiments.In addition, the invention of the first and second embodiments is to have based on identical or corresponding specified features to form single inventive concept the technical relation that is mutually related with the invention of the 3rd embodiment.Existence is to the mark same-sign such as same parts the situation that description thereof is omitted (wherein, size or detailed position relationship are according to figure corresponding to the embodiment with separately).
Figure 25 schematically shows local excision's axonometric chart of the disposable diaper of the preferred embodiment (the 3rd embodiment) as absorbent commodity of the present invention from skin contact face direction.Diaper shown in this figure is the disposable diaper of banding pattern, with the state representation that (skin contact face side) observes from inner side by the diaper slight curvature of the state of planar development.
First, the summary of the above-mentioned disposable diaper 30 of the 3rd embodiment is described.
The disposable diaper 30 of the 3rd embodiment has the essentially identical parts formation of diaper 10 (positive dough sheet 1, back sheet 2, absorber 3 and lateral plate 4 etc.) with the first embodiment.But, in Figure 25, for fear of numerous and diverse property, and the absorbent core of not shown formation absorber 3 and the differentiation of emulsion sheet, but absorber 3 integral body are represented as 1 parts.
In the diaper 30 of the 3rd embodiment, the sublayer 6 that disposes liquid permeability between positive dough sheet 1 and absorber 3, this point is different from the diaper 10 of the first embodiment.Sublayer 6 is less than the roughly oblong-shaped of back sheet 2 for width, and so that its long side direction is consistent with the long side direction of back sheet 2, the mode that covers the skin contact face side of absorber 3 configures.
Sublayer 6 is that the liquid rapidly by from positive dough sheet 6 sucks, to the diffusion of the liquid of in-plane with to the efficient transmission of the liquid of absorber 3, sends the parts that promote absorbent properties here.In addition, sublayer 6 can arrange the distance of regulation and increase component thickness between the skin contact face side of diaper 30 and absorber 3.Thus, can suppress the liquid that returns to positive dough sheet 1 side, thereby effectively suppress the humidity of diaper 30 inside.
The material of above-mentioned positive dough sheet 1, back sheet 2 and absorbent portion 3 can adopt the material identical with the first embodiment.As sublayer 6, by take the sheet material that the fibrous material of liquid permeability is main body, form, but the details of material etc. are carried out aftermentioned.In addition, from permeability and the diffusible viewpoint of liquid, sublayer 6 optimum fiber density are lower than positive dough sheet.
Then, with reference to the cross sectional shape of Figure 26-1 and Figure 26-2 pair diaper 30, describe, and the formation that aligns dough sheet 1 and sublayer 6 describes.(a) of Figure 26-1 is the sectional view in the II-II line cross section shown in Figure 25, (b) is the local amplification sectional view that schematically shows the configuration relation of positive dough sheet and sublayer 6.Figure 26-2nd, the photo that the replacement accompanying drawing of the cross section gained of shooting disposable diaper 30 is used.In addition, in the photo of using at the replacement accompanying drawing of Figure 26-2, the part that the back side protuberance 8 of positive dough sheet 1 is connected to sublayer 6 represents with the part of surrounding with dotted line circle.
As Figure 26-l(a) and Figure 26-2 as shown in, the cross sectional shape of diaper 30 have positive dough sheet 1 with respect to absorber 3 alternate repetitions be formed with back side protuberance 8v on the protuberance 8(absorber of the back side) and back side recess 7(absorber on back side recess 7v) concaveconvex shape.And, back side protuberance 8v on protuberance 8(absorber overleaf) upper, positive dough sheet 1 and sublayer 6 butts.
The present invention is kept liquid imbedibility, the liquid diffusibility of sublayer and is returned liquid preventive by this positive dough sheet 1 and the structure of the abutment portion (following, abutment portion is shown to symbol 63) of sublayer 6, and can realize the further minimizing of following liquid residue.With reference to Figure 26-l(b) further the structure of this positive dough sheet 1 and sublayer 6 is described.
As Figure 26-l(b) as shown in, in the non-skin face side of positive dough sheet 1, be formed with from skin contact face side (Z 1) to non-skin contact face side (Z 2) outstanding back side protuberance 8.This back side protuberance 8 in face direction with roughly uniformly-spaced in abutting connection with and periodically dispose a plurality of.And, between each back side protuberance 8, become from non-skin contact face side (Z 2) to skin contact face side (Z 1) depression back side recess 7.This is configured to the configuration that each back side protuberance 8 spreads dispersedly to all directions when overlooking.Thus, the non-skin contact face side of positive dough sheet 1 becomes concaveconvex shape.In addition, in the 3rd embodiment, in the skin contact face side of the positive dough sheet 1 corresponding with this back side protuberance 8, be formed with front recess 88, in the skin contact face side of the positive dough sheet l corresponding with back side recess 7, be formed with front protuberance 78.
As mentioned above, back side protuberance 8 is the side-prominent parts of non-skin contact face side direction absorber 3 at positive dough sheet 1.And back side protuberance 8 contacts (with reference to Figure 27) with sublayer 6 at abutting part 63.By this abutting part 63, fill the gap between absorber 3 and positive dough sheet 1, easily make via sublayer 6, to be sent to positive dough sheet 1 from the captivation of absorber 3.And then, the fibre density that the fibre density of the sublayer 6 in abutment portion 63 is made as higher than the sublayer except this abutment portion is (following, the part of the higher sublayer 6 of fibre density is called to compact part 61, the part of the lower sublayer 6 of fibre density is called to part of rarefaction 62).Thus, the capillary force of the compact part 61 of sublayer 6 with in sublayer 6 part of rarefaction 62 compare and more easily suck liquid, mutually combine with the captivation of absorber 3, the liquid that is easy to remain in positive dough sheet 1, particularly back side protuberance 8 also can suck energetically.And liquid is transmitted efficiently to absorber 3 in sublayer 6.Its result is further strengthen the inhibition of the liquid residue of positive dough sheet 1, and the humidity further strengthening between skin and positive dough sheet 1 to suppress.
In the 3rd embodiment, back side protuberance 8 is formed with the top 8a with circular arc, has suitably suppressed the contact area with sublayer 6 at abutting part 63.Thus, suppress back liquid, thereby can realize the minimizing at the liquid residue of abutting part 63.In addition, by the inhibition of contact area, and effectively suppressed the soaking of positive dough sheet 1, but do not hindered the fluid absorbent in aftermentioned back side recess 7.As long as can obtain this effect, the back side protuberance 8 of positive dough sheet 1 is not limited to the top 8a of the 3rd embodiment, can be also flat shape.
In the present invention, the viewpoint reducing from liquid residue, has not been maintained interfibrous gap by membranization separately at the formation fiber of the back side protuberance 8 of abutting part 63 butts and the compact part 61 of sublayer 6.This situation is different from the membranization of the existing fiber by realizations such as heat seals, can not hinder the transfer of liquid.And, can effectively utilize the capillary force of compact part 61 of sublayer 6 by the absorber 3 that strongly leads of the liquid in positive dough sheet 1.In addition, because of not by membranization, so abutting part 63 not by rigidization, thereby skin sense of touch is improved.And, do not hinder loft and the resiliency by positive dough sheet 1 and sublayer 6, realized, can obtain good wearing feeling.Therefore in addition, abutting part 63 does not have by the rigidity due to membranization, even if there is the extruding from the thickness direction of positive dough sheet 1 side, power is relaxed by abutting part 63 and can directly not be sent to below.Therefore, more difficult because extruding produces back liquid, so preferably.
And the abutting part 63 of back side protuberance 8 and sublayer 6 is preferably by engaged parts such as hot-melt adhesives, mixes and exist with the part not engaging by bonding agent etc.Thus, can realize with good balance liquid residue reduce with the stabilisation of abutting part 63 and deposit.In addition, by the engaged part of bonding agent, be preferably needed Min., for its scope, be preferably the bonding part of reducing in excretory portion corresponding region.In this way, can prevent from, because bonding agent hinders following liquid to the flowing smoothly of absorber, obtaining soft wearing feeling simultaneously.In addition, the part that back side protuberance 8 contacts with compact part 61 in sublayer 6, without being the whole region of positive dough sheet l, being preferably and being at least implemented in the crotch bottom C that comprises excretory portion corresponding region.In addition, excretory portion corresponding region be directly receive urine or excretion just etc. part and near.
From this viewpoint, by the quantity (g of the engaged abutting parts such as bonding agent 1) with the quantity (g of not engaged abutting part 2) ratio (g 1/ g 2) be preferably more than 1/1, more preferably more than 1/2.In addition, above-mentioned ratio (g 1/ g 2) be preferably below 1/8, more preferably below 1/4.More than being made as above-mentioned lower limit, positive dough sheet 1 becomes stable with engaging of sublayer 6, by being made as below the above-mentioned upper limit, can prevent from being hindered by the absorbability due to bonding agent.In addition, utilize hot-melt adhesive etc. by bonding abutting part 63 in, be also preferably to wait by spraying both fibers put to joint each other, and do not form the film of bonding agent.Thus, even if the fiber of the compact part 61 of back side protuberance 8 and sublayer 6 is engaged each other, also can easily keep both interfibrous gaps.
In addition, from the viewpoint of the stabilisation of abutting part 63, preferably, as shown in figure 27, the compact part 61 of sublayer 6 forms to the recess of non-skin contact face side depression, and back side protuberance 8 enters into this recess and is in contact with it.If this state, even if compact part 61 is not firmly bonded with back side protuberance 8, is also difficult to make butt state to destroy, easily stabilisation.In addition, even if do not expand the region area of compact part 61, but in entering part, back side protuberance 8 is suitably expanded with the face that compact part 61 contacts, and has therefore improved to the transfer efficiency of absorber 3.On the other hand, in following back side recess 7, if the part of rarefaction 62 of sublayer 6 is fluffy, slightly enter into spatial portion 72w on the recess spatial portion 72w(sublayer of above-mentioned back side recess 7), the liquid of the easy guide recess spatial portion 72w that becomes, therefore preferably.The recess thickness of this compact part 61 is preferably more than 30% with respect to the thickness of part of rarefaction 62, more preferably more than 50%.In addition, the recess thickness of above-mentioned compact part 61 is preferably below 90% with respect to the thickness of part of rarefaction 62, more preferably below 70%.More than being made as above-mentioned lower limit, can suppress to return liquid or steam to the evapotranspiring of diaper inside in abutting part, by being made as below the above-mentioned upper limit, can stably maintain the butt state of positive dough sheet l and sublayer 6.
On the other hand, back side recess 7 is depressions of the non-skin contact side of positive dough sheet 1, and by the positive dough sheet 1 caving in along this, formed from top 7a, towards the side wall portion 7b of bottom 7c, formed (with reference to Figure 26-l(b)).The position configuration of recess 7 has the part of rarefaction 62 of sublayer 6 overleaf.Between the part of rarefaction 62 of back side recess 7 and sublayer 6, become recess spatial portion 72w.Even if the part that has the fibrous material of positive dough sheet 1 or sublayer 6 to enter a little in recess spatial portion 72w is in fact also gap.Owing to being space, so the liquid of the liquid seeing through from positive dough sheet 1 is lower through resistance.And, recess spatial portion 72w because of be positioned at back side recess 7 in relatively near the position of skin side, so liquid is easy to enter rapidly from top 7a or side wall portion 7b, and the liquid that easily makes positive dough sheet 1 receive sees through energetically.In addition, this recess spatial portion 72w also becomes the buffer locations that the impact from the power of positive dough sheet l side is relaxed, so preferably.
And the fiber of the part of rarefaction 62 of sublayer 6 is not increased to the degree of compact part 61, therefore can bring into play the original function in sublayer 6, i.e. liquid imbedibility and liquid diffusibility.And part of rarefaction 62 can transmit the liquid that enters into recess spatial portion 72w rapidly to absorber 3 with broader area.From this viewpoint, preferably, the fibre density of sublayer 6 is lower than near the fibre density back side recess 7 of positive dough sheet 1.In addition, the formation of the part of rarefaction 62 by positive dough sheet 1, recess spatial portion 72w, sublayer 6, can expand the skin of wearer and the distance between absorber to guarantee thickness.Thus, can suitably suppress the liquid that returns to skin side.
As mentioned above, overleaf in recess 7, the combination of the part of rarefaction 62 by recess spatial portion 72w and sublayer 6, can improve the infiltration rate from the discharged liquid of positive dough sheet 1, and suppresses the diffusion of liquid of the skin contact face side of positive dough sheet 1.In addition, even reach a large amount of in the situation that the excretion of discharged liquid is instantaneous, recess spatial portion 72w also can temporarily keep the liquid from positive dough sheet 1, becomes the adjustment valve of Liquid Absorption.And recess spatial portion 72w is different from the absorber 3 being formed by paper pulp fiber etc., moisture holding capacity is lower, therefore, combines with the liquid diffusion of sublayer 6, can transmit rapidly liquid to absorber 3.Like this, although the combination of the part of rarefaction 62 of recess spatial portion 72w and sublayer 6 can temporarily keep liquid as the adjustment valve of liquid, but still can make space immediate recovery, therefore not only in the situation that a large amount of excretions, even if in the situation that excretion repeatedly also can fully be tackled.In addition, if the skin contact side of absorber 3 is smooth in fact shape, this effect becomes more effective, so preferably.
Viewpoint from above-mentioned infiltration rate, the cross sectional shape that the shape of back side recess 7 is preferably the formed back side of side wall portion 7b recess 7 is Throwing thing wire shaped roughly, the spatial form of back side recess 7 shape close to cone (circular cone, the frustum of a cone, pyramid, the frustum of a pyramid, oblique cone etc.) that is top 7a with the circular cone of circular arc or frustum of a cone etc.The gradient of cone shape can make liquid see through on thickness direction compared with slow inclination and pressure while not destroying fluid drainage, and more liquid is sucked to recess spatial portion 72w rapidly.
In addition, overleaf in recess 7, top 7a is the extreme higher position (Z forming in the non-skin contact side of positive dough sheet 1 of inwall of solid space of back side recess 7 1direction) position, bottom 7c is the extreme lower position (Z in the same space 2direction) position.The bottom 7c of back side recess is consistent with the top 8a of back side protuberance 8.In addition, the top 8a of the top 7a of above-mentioned back side recess 7 or the 7c(back side, bottom protuberance) be as the vertex representation on curved surface, but be not limited to this, can be also that its periphery is plane.In this case, top 7a can be decided to be the highest point in the central point of this plane or plane, and bottom 7c can be decided to be minimum point in the central point of this plane or plane.In this definition, the degree of depth (h of back side recess 7 1) be the difference of height of the non-skin contact side of positive dough sheet 1, and be the distance (with reference to Figure 26-l(b) from top 7a to bottom 7c).
The degree of depth (the h of back side recess 7 1) be according to the size of absorbent commodity or purposes and different, cannot be decided to be unique value, more than being preferably 0.5mm, more preferably more than lmm.In addition, the degree of depth (h of back side recess 7 1) be preferably below 4mm, more preferably below 3mm.The degree of depth (the h of back side recess 7 1) by the cross section of the positive dough sheet 1 by top 7a and bottom 7c being amplified and is measured the tangent line t of adjacent bottom 7c 1(with reference to Figure 26-l(b)) carry out with the distance of top 7a.During measurement, utilize KEYENCE VH-3000 microscope processed to amplify, by the point-to-point transmission measurement method after alignment settings, measure.Also can use ultramicroscope.
As mentioned above, the region of back side recess 7 (combination of recess spatial portion 72w and part of rarefaction 62), with region (abutting part 63 of back side protuberance 8 and the compact part 61) synergy of back side protuberance 8, improved fluid absorbent, liquid transmits and suppresses back liquid to absorber 3 rapidly, strengthens suppressing liquid residue simultaneously.Thus, can further suppress contacting of liquid and wearer skin, further improve the effect that the humidity between the skin face side of skin and diaper 30 reduces.Structure between this parts is preferably the crotch bottom C that is at least disposed at diaper 30.Can realize the good dry feeling to wearer skin.
In addition, absorber 3 is to absorb with the face compared with wide the liquid that maintenance is spread by sublayer 6 and recess spatial portion 72w, and liquid also broadens extensively to the arrival area of back sheet 2 sides.And, can make dampness discharge efficiently to outside from back sheet 2.Its result is, reduction by the diaper temperature due to the heat of vaporization of dampness can realize by the face compared with broad of back sheet 2 sides, the moisture that can effectively suppress in diaper 30 inside (part of being surrounded by the skin of back sheet 2 and wearer) evapotranspires, thereby can make diaper 30 more be difficult to produce stewing wet sense.
In the present invention, from realizing the viewpoint of above action effect, the fibre density (m of the compact part 61 of sublayer 6 61) be preferably 15/mm 2above, 20/mm more preferably 2above.In addition, above-mentioned fibre density (m 61) be preferably 120/mm 2below, 80/mm more preferably 2below.In addition, the fibre density (m of the part of rarefaction 62 of sublayer 6 62) be preferably 10/mm 2above, 15/mm more preferably 2above.In addition, above-mentioned fibre density (m 62) be preferably 100/mm 2below, 60/mm more preferably 2below.And, the fibre density (m of compact part 61 61) and the fibre density (m of part of rarefaction 62 62) ratio (m 61/ m 62) be preferably more than 6/5, more preferably more than 7/5.In addition, above-mentioned ratio (m 61/ m 62) be preferably below 3/1, more preferably below 2/1.
And, from same viewpoint, the area (n of the skin contact face side of sublayer 6 6) in the area (n that overlooks region of compact part 61 63) ratio (n 63/ n 6) be preferably more than 1/20 more than, more preferably more than 1/10.In addition, aforementioned proportion (n 63/ n 6) be preferably below 2/5, more preferably below 1/5.This overlooks the area (n in region 63) be not consider the depression wall etc. of thickness direction and overlook the region area while observing sublayer 6 from skin contact face side.
(differentiating method of compact part 61 and part of rarefaction 62)
About the compact part 61 and part of rarefaction 62 of sublayer, the conventionally clear and definite border of impalpable density.Therefore, compact part 61 can be made as to the part that becomes depression, or compact part 61 is made as to the part with back side protuberance 8 butts, to distinguish with part of rarefaction 62.
More specifically, become the cross section of the sublayer 6 of the adjacent compact part 61 by sublayer is amplified, the part that the curve in the skin side front of sublayer 6 is clipped by the region with circular arc as the curved to non-skin contact face side depression.The cross section in the skin side front of sublayer becomes to the curve of non-skin contact face side depression and to the continuous concaveconvex shape repeatedly of the side-prominent curve of skin contact face.On the border of this depressed part and protuberance, through roughly becoming the direction of the region bending of straight line, change.To start bending by this straight line and be made as depression with the female that the border of circular arc surrounds.
(assay method of the density of sublayer 6)
Use following sweep electron microscope to carry out amplifying observation (fibre section is adjusted into the multiplying power that can measure 30 to 60, more than being 150 times and below 500 times), the quantity to the cross section of the fiber being cut off by above-mentioned section of approximately certain area.Then, convert into about 1mm 2the number of cross sections of fiber, using it as fibre density (root/mm 2).Mensuration is to carry out at three places, in addition average after as the fibre density of this sample.
The JCM-5100(trade name of scanning electron microscope, NEC (strain) society system)
And, about the skin contact face side of positive dough sheet 1, be preferably as illustrated with reference to Fig. 4 in the first embodiment, be concatenated to form matchingly front protuberance 78 and front recess 88 with the fluctuating of back side recess 7 and back side protuberance 8 and the concaveconvex shape that forms.Preferred this concaveconvex shape of just carrying on the back one disposes a plurality of on in-plane, as positive dough sheet l integral body, on multi-direction, has been concatenated to form concavo-convex (with reference to Fig. 4).By the shape of this positive dough sheet 1, not only can reduce the contact area with sublayer 6, also can reduce the contact area of skin with the positive dough sheet 1 of wearer.By the minimizing of this contact area, further effectively suppress the soaking of skin, and owing to also improving in jog breathability, therefore also further effectively prevent stewing wet sense.In addition, if positive dough sheet 1 two sides is concaveconvex shape, for three-dimensional activity, follow well, show the three-dimensional resiliency supporting with point on two sides.If the top 78a of front protuberance 78 is the curve form with circular arc, combine with this resiliency, can obtain soft skin sense of touch.
In addition, preferably, the concaveconvex shape of positive dough sheet 1, as shown in Figure 4, is formed with from front protuberance 78 towards the downward-sloping side wall portion 88b(=78b of front recess 88), make front recess 88 become independently mortar shape or cup-shaped.Thus, the catching of discharged liquid and the raising of fluid absorbent are more effective.For example, the top 78a that discharged liquid is compared front protuberance 78 is more easily along its side wall portion 78b(=88b) downward (arrow b 1) and assemble near the 88a of the top of front recess 88, and be difficult to move to in-plane.Thus, can further be suppressed at the diffusibility of discharged liquid of the skin contact face side of positive dough sheet 1, and can make this discharged liquid to the position away from skin, move on thickness direction.
In this case, as shown in figure 28, move to the discharged liquid of front recess 88 by the side wall portion 7b from this side wall portion 88b(=back side recess 7) to recess spatial portion 72w, suck (arrow b 2).Then, liquid spreads (arrow b from recess spatial portion 72w to in-plane 3), and transmit (arrow b to absorbent core 31 4) and be immobilized.And the liquid accumulating in a large number at front recess 88 does not see through completely and easily produces liquid residue in this part.
But, its non-skin face side, due to as back side protuberance 8 with the compact part 61 of sublayer 6 at abutting part 63 butts, therefore can make the inhalation power of stronger sublayer 6 and the captivation of absorber 3 mutually combine, thus (the arrow b that effectively eliminates liquid residue 5).Like this, the concaveconvex shape of front protuberance 78 and front recess 88 can make the more efficiently performance of effect based on back side protuberance 8 and back side recess 7 and sublayer 6.
Non-skin contact face side about positive dough sheet 1, preferably, real drag in mode illustratedly with reference to Fig. 6 as first, each back side protuberance 8 is by 7 encirclements of a plurality of back sides recess, separate configuration on in-plane, and the space of each back side recess 7 interconnects on in-plane.Thus, the discharged liquid that is drawn into recess spatial portion 72w can hollow arrow as shown in Figure 6,7 gets around the pillar of back side recess 7 like that and free diffusing keeps discharged liquid and makes its immobilization thereby can effectively absorb with the broader face of absorbent core 31.
In Figure 27 of diaper 30 or the absorption process of the liquid shown in Figure 28, preferably, the fibre density of the non-woven fabrics of the positive dough sheet 1 in the recess of the back side has density contrast or the density gradient increasing from top 7a to bottom 7c.Thus, can make liquid see through rapidly from skin contact face side, and liquid is more effectively sucked to inside.This density contrast, density gradient be can be for example by by Figure 26-l(b) shown in institute's uniform section of back side recess 7 in positive dough sheet 1 from top 7a to bottom 7c with the height (h of back side recess 7 1) carry out trisection (A portion, B portion, C portion), and each fibre density (n to each divided portion 1, n 2, n 3) on average compare and represent.The fibre density of A portion, B portion, C portion is preferably (n 1) < (n 2) < (n 3), its ratio (n 1/ n 2/ n 3) be preferably more than 2/6/10, more preferably more than 3/5/10.In addition, above-mentioned ratio (n 1/ n 2/ n 3) be preferably below 8/9/10, more preferably below 5/7/10.More than being made as above-mentioned lower limit, can guarantee the comfort level of skin sense of touch, by being made as below the above-mentioned upper limit, can reduce the liquid residue of positive dough sheet 1.
(assay method of the density of the positive dough sheet 1 in back side recess 7)
Density (the n of the top 7a of the positive dough sheet 1 in above-mentioned back side recess 7, side wall portion 7b, bottom 7c 1, n 2, n 3) can measure by the following method.
The degree of depth (h with back side recess 7 1) be that benchmark is by the part trisection of the positive dough sheet 1 to bottom 7b from top 7a, and various piece is made as to A portion, B portion, C portion, (fibre section is adjusted into the multiplying power that can measure 30 to 60 to use following sweep electron microscope to carry out amplifying observation to the section of the top 7a by positive dough sheet and bottom 7b, more than being 150 times and below 500 times), the quantity in the cross section of the fiber being cut off by above-mentioned section of approximately certain area is counted.Then, convert into about 1mm 2the number of cross sections of fiber, using it as fibre density (root/mm 2).Mensuration is to carry out at three places, and in addition on average as the fibre density of this sample.
The JCM-5100(trade name of scanning electron microscope, NEC (strain) society system)
(variation of the cross sectional shape of positive dough sheet)
In diaper 30, the cross sectional shape of positive dough sheet 1 is not limited to the concaveconvex shape of the 3rd embodiment, as long as can realize the configuration relation of the sublayer 6 of back side protuberance 8 and back side recess 7 and its below, can be made as arbitrary shape.For example, the skin contact face side that can enumerate is as shown in figure 29 that smooth shape (a), the top of back side protuberance 8 are smooth shape (b) etc.In the situation that the shape as shown in Figure 29 (b), the bottom 7c of back side recess 7 is cross sections of the plane at 8a place, top of back side protuberance 8 and the curved surface of the side wall portion 7b of back side recess 7.
In the variation of these positive dough sheets 1, back side protuberance 8 is thicker than back side recess 7.Therefore, the inside of protuberance easily produces liquid residue overleaf.But, even in this case, due to compact part 61 butts of back side protuberance 8 with sublayer 6, therefore can make the inhalation power of stronger sublayer 6 and the captivation of absorber 3 mutually combine and effectively eliminate liquid residue.In addition, in this variation, also the fibre density of the non-woven fabrics of the positive dough sheet 1 in preferred recess overleaf has density contrast or the density gradient increasing from top 7a to bottom 7c.Thus, can make liquid see through rapidly to recess spatial portion 72w from the part of the thinner thickness of positive dough sheet l, make sublayer 6 strongly to the inner liquid that transmits of absorber.
(variation of absorber)
And then, in diaper 30, the shape of the absorbent core of formation absorber does not limit the slab-sided shape of skin contact with the 3rd embodiment, can adopt arbitrarily and can make to enter into inner liquid long range diffusion and promptly be absorbed maintenance and make its immobilized shape.For example, can enumerate in the first embodiment with reference to Figure 10 and illustrating, by the recess 91 of groove shape, distinguished by this recess absorbent core 90(Figure 10 (a) that the block outstanding absorbent portion 93 that forms forms with the recess absorbent portion 94 that is connected the one side side of this outstanding absorbent portion 93 corresponding to recess 91), 90a(Figure 10 (b)) etc.
In the situation that adopting this absorbent core 90 or 90a, preferred disposition is: at least, in the crotch bottom C that comprises excretory portion corresponding region, recess 91 or recess absorbent portion 94 weigh father with the recess spatial portion 72w of back side recess 7.Thus, the liquid in recess spatial portion 72w easily moves to recess 91 or recess absorbent portion 94, and easily diffusion immobilization rapidly.
(the formation method of back side recess 7, back side protuberance 8 and abutting part 63)
The absorbent commodity with back side recess 7, back side protuberance 8 and abutting part 63 as shown in Figure 26-2 can obtain in the common manufacturing process of this kind of article.For example, can form in the following way: in the assembling process of diaper in the stacked stage of absorber and positive dough sheet, the mode that is connected to the backer roll that is formed with jog with positive dough sheet 1 is directed into above-mentioned sandwich between above-mentioned backer roll and the backing roll of configuration relative to this backer roll, carries out pressurized.But the object of this pressurization and heating is, the positive figuration of dough sheet 1 and the formation of abutting part 63, the degree that therefore firmly degree is not carried out membranization as the crimping between sheet is fixing.More than pressurized conditions in this situation is preferably 0.2MPa, more preferably more than 0.3MPa.In addition, above-mentioned pressurization is preferably below 0.8MPa, more preferably below 0.6MPa.In addition, in the situation that in pressurization, implement heating, more than this heating-up temperature is preferably room temperature, more preferably more than 40 ℃.In addition, above-mentioned heating-up temperature is preferably below 100 ℃, more preferably below 80 ℃.
And, in the situation that utilizing above-mentioned backer roll to form back side recess, the concaveconvex shape having in advance as shown in Figure 4 if use or the figuration sheet of concaveconvex shape as shown in figure 29, make back side protuberance 8 more reliable with the formation of abutting part 63 sublayer 6, now, the part that can form the sublayer 6 in abutting part 63 caves in into the high part of density of concavity, therefore preferably.
The manufacture of above-mentioned figuration sheet can be undertaken by the method illustrating in the first embodiment.
Formation material as positive dough sheet 1, sublayer 6, back sheet 2, absorber 3 and lateral plate 4, can be used the material being generally used in absorbent commodity.Particularly, can enumerate illustrated raw material etc. in the first embodiment.
In addition, as sublayer 6, if consider, for example can bring into play the diffusion of aforesaid liquid, the function this point seeing through, be preferably and use non-woven fabrics or fluffy paper pulp sheet.As the concrete example of non-woven fabrics, can enumerate: hot-wind nonwoven cloth, spun-laced nonwoven fabric, spun-bonded non-woven fabrics, melt spraying non-woven fabrics etc.In the situation that these non-woven fabrics consist of hydrophobic fibre, preferably use hydrophilic agent and make its hydrophiling.The grammes per square metre of sublayer 5 is preferably 20g/m 2above, 30g/m more preferably 2above.In addition, above-mentioned grammes per square metre is preferably 100g/m 2below, 80g/m more preferably 2below.
Absorbent commodity of the present invention can be obtained the action effect of following excellence, that is: further improve the absorbent properties of existing absorbent commodity, the humidity that suppresses go back to liquid or article inside, and further reduce according to using state or excretion etc. and the liquid residue of issuable skin face side, thereby can further alleviate the burden to wearer skin.
In absorbent commodity of the present invention, as long as absorber has portion within it, absorb maintenance liquid and make its immobilized function, be not limited to above-mentioned embodiment, can be also for example the slim absorber of lamellar.In addition, in absorbent commodity of the present invention, as long as sublayer has at least skin contact face side of the above-mentioned absorber of covering transmits function from liquid to this absorber, being not limited to above-mentioned embodiment, being also not limited to monolayer, can be multilamellar.
Absorbent commodity of the present invention is not limited to the flat type disposable diaper of above-mentioned embodiment, comprises the diaper of the above-mentioned relation with positive dough sheet, sublayer and absorber.For example, also can or be pull-on disposable diaper and make a part of fracture just can be as the diaper of banding pattern for pull-on disposable diaper, can be also urine absorbent pad or sanitary napkin, protective pad, light incontinence pad in addition.In addition, absorbent commodity of the present invention is not limited to menses effective, also effective to other urine, leucorrhea, soft stool etc.In addition, absorbent commodity of the present invention also can suitably be assembled other parts according to purposes or function in the 3rd embodiment person's diaper.
About above-mentioned embodiment, the present invention is open following absorbent commodity further.
< 1 > absorbent commodity, its have the liquid permeability that is disposed at skin contact face side positive dough sheet, be disposed at the back sheet of non-skin contact face side and the absorber arranging between these two sheets,
Above-mentioned positive dough sheet consists of non-woven fabrics, and above-mentioned absorber has absorbent core and covers the emulsion sheet of this absorbent core,
In the non-skin contact face side of above-mentioned positive dough sheet, a plurality of back side recesses to skin contact face side depression are adjacent to decentralized configuration, and above-mentioned emulsion sheet enters into this back side recess, between the emulsion sheet entering and above-mentioned absorbent core, has spatial portion at this.
The absorbent commodity that < 2 > are recorded as above-mentioned < 1 >, the non-skin contact face side of above-mentioned positive dough sheet becomes concaveconvex shape by the periodic arrangement of above-mentioned back side recess.
The absorbent commodity that < 3 > are recorded as above-mentioned < 1 > or < 2 >, the skin contact face side of above-mentioned positive dough sheet is concaveconvex shape.
< 4 > are as the absorbent commodity that in above-mentioned < 1 >～< 3 >, any one is recorded, and the skin contact face side of above-mentioned absorbent core is smooth shape.
< 5 > are as the absorbent commodity that in above-mentioned < 1 >～< 4 >, any one is recorded, and a part for above-mentioned emulsion sheet enters into above-mentioned back side recess and the cup depth of the above-mentioned back side of the depth ratio recess 7 of the portion that enters that forms is shallow.
< 6 > are as the absorbent commodity that in above-mentioned < 1 >～< 5 >, any one is recorded, and the penetration depth of the above-mentioned emulsion sheet in the above-mentioned back side recess of above-mentioned positive dough sheet is the more than 50% of cup depth of above-mentioned back side recess.
< 7 > are as absorbent commodity that in above-mentioned < 1 >～< 6 >, any one is recorded, in the integral body of above-mentioned back side recess, the penetration depth of the above-mentioned emulsion sheet in the above-mentioned back side recess of above-mentioned positive dough sheet is that the quantity of more than 50% above-mentioned back side recess of the cup depth of above-mentioned back side recess preferably exists more than 50%, more preferably more than 70%.
< 8 > are as absorbent commodity that in above-mentioned < 1 >～< 7 >, any one is recorded, in the recess of the above-mentioned back side, between above-mentioned positive dough sheet and the entering part of above-mentioned emulsion sheet, there is clearance portion.
< 9 >, as the absorbent commodity that in above-mentioned < 1 >～< 8 >, any one is recorded, have above-mentioned emulsion sheet and the engaged part of above-mentioned positive dough sheet at above-mentioned back side recess.
< 10 > are as absorbent commodity that in above-mentioned < 1 >～< 9 >, any one is recorded, the depression of the non-skin contact side that above-mentioned back side recess is above-mentioned positive dough sheet, and being formed from top towards the side wall portion of bottom of being formed by the positive dough sheet caving in along this.
The absorbent commodity that < 11 > are recorded as above-mentioned < 10 >, in the recess of the above-mentioned back side, the cross sectional shape of formed this back side recess 7 of above-mentioned side wall portion is and the similar shape of Throwing thing line, and the spatial form of this back side recess is and circular cone or the frustum of a cone similar shape of above-mentioned top with circular arc.
< 12 >, as the absorbent commodity that above-mentioned < 10 > or < 11 > are recorded, are formed with side wall portion and above-mentioned portion's butt the engaged junction surface of entering of above-mentioned back side recess.
The absorbent commodity that < 13 > are recorded as above-mentioned < 12 >, above-mentioned junction surface is to make above-mentioned emulsion sheet put and engage each other with the fiber of above-mentioned positive dough sheet by spray Tu bonding agent.
< 14 > are as absorbent commodity that in above-mentioned < 1 >～< 13 >, any one is recorded, the non-skin contact face side of above-mentioned positive dough sheet disposes a plurality of back sides recess and a plurality of back sides protuberance, each above-mentioned back side protuberance is surrounded and separate configuration by a plurality of above-mentioned back sides recess, and the space of above-mentioned back side recess interconnects.
< 15 > are as absorbent commodity that in above-mentioned < 1 >～< 14 >, any one is recorded, above-mentioned back side recess has top, side wall portion and the bottom consisting of positive dough sheet, and the density of the non-woven fabrics fiber of this positive dough sheet has density contrast or the density gradient increasing from above-mentioned top to bottom.
< 16 > are as absorbent commodity that in above-mentioned < 1 >～< 15 >, any one is recorded, above-mentioned absorbent core has the density structure of fibre density, has the sparse part part overlapping with above-mentioned spatial portion of density of this absorbent core.
< 17 > are as the absorbent commodity that in above-mentioned < 1 >～< 16 >, any one is recorded, and above-mentioned emulsion sheet and above-mentioned absorbent core are engaged by phased manner by hot-melt adhesive.
< 18 > are as absorbent commodity that in above-mentioned < 1 >～< 17 >, any one is recorded, in the cross section of above-mentioned back side recess, fibre density becomes large from skin face side to non-skin face side.
< 19 > are as absorbent commodity that in above-mentioned < 1 >～< 18 >, any one is recorded, above-mentioned absorbent commodity has end laminated section, this end laminated section is by the outside, long side direction end at above-mentioned absorber, between above-mentioned positive dough sheet and above-mentioned back sheet, this absorber is not set and make above-mentioned positive dough sheet and above-mentioned back sheet directly or indirectly stacked and laminating form
The opposite face that above-mentioned end laminated section has above-mentioned positive dough sheet and above-mentioned back sheet is out of shape to convex a plurality of one variant parts that form, the plurality of one variant part decentralized configuration on the in-plane of above-mentioned end laminated section integratedly on thickness direction.
The absorbent commodity that < 20 > are recorded as above-mentioned < 19 >, above-mentioned positive dough sheet in the laminated section of above-mentioned end and the opposite face of above-mentioned back sheet, when the cross-section of long side direction, by the formed distortion of above-mentioned one variant part, on thickness direction, there is the shape of crawling.
The absorbent commodity that < 21 > are recorded as above-mentioned < 19 > or < 20 >, non-skin contact face side at above-mentioned positive dough sheet, a plurality of back side recesses to skin contact face side depression are adjacent to decentralized configuration, above-mentioned back sheet enters into the above-mentioned back side recess of above-mentioned end laminated section, forms above-mentioned one variant part.
The absorbent commodity that < 22 > are recorded as above-mentioned < 21 >, the above-mentioned back side recess in the laminated section of above-mentioned end is the depression of cone shape roughly.
< 23 > are as the absorbent commodity that in above-mentioned < 19 >～< 22 >, any one is recorded, and above-mentioned positive dough sheet consists of the non-woven fabrics on two sides with concaveconvex shape.
< 24 > are as absorbent commodity that in above-mentioned < 19 >～< 23 >, any one is recorded, in the laminated section of above-mentioned end, between above-mentioned positive dough sheet and above-mentioned back sheet, on width, dispose elastomeric element.
< 25 > are as absorbent commodity that in above-mentioned < 19 >～< 24 >, any one is recorded, in the laminated section of above-mentioned end, between above-mentioned positive dough sheet and above-mentioned back sheet, dispose the sheet being formed by non-woven fabrics.
< 26 > are as the absorbent commodity that in above-mentioned < 19 >～< 25 >, any one is recorded, and the penetration depth of protrusion that a part for above-mentioned back sheet enters into this back side recess is more shallow than the cup depth of the above-mentioned back side recess of above-mentioned end laminated section.
The absorbent commodity that < 27 > are recorded as above-mentioned < 26 >, the penetration depth of the above-mentioned back side recess in the laminated section of above-mentioned end is more than 0.4mm and below 4mm.
< 28 > are as absorbent commodity that in above-mentioned < 1 >～< 27 >, any one is recorded, non-skin contact face side at above-mentioned positive dough sheet, back side protuberance disperses to exist formation concaveconvex shape, the sublayer that disposes liquid permeability between this positive dough sheet and above-mentioned absorber, this sublayer contacts in abutment portion with the back side protuberance of above-mentioned positive dough sheet
The fibre density of the above-mentioned sublayer of above-mentioned abutment portion is higher than the fibre density of other parts of this sublayer.
The absorbent commodity that < 29 > are recorded as above-mentioned < 28 >, the peripheral part of the above-mentioned back side protuberance of the non-skin contact face side of above-mentioned positive dough sheet forms from the back side recess of non-skin contact face side direction skin contact face side depression, between this back side recess and above-mentioned sublayer, be formed with recess spatial portion, be positioned at the fibre density of above-mentioned sublayer of position of this recess spatial portion than low with the fibre density of the above-mentioned sublayer of above-mentioned back side protuberance butt.
The absorbent commodity that < 30 > are recorded as above-mentioned < 28 > or < 29 >, the fibrous structure that the interfibrous gap that is two parts in the above-mentioned back side protuberance of above-mentioned positive dough sheet and the abutment portion of above-mentioned sublayer is maintained.
< 31 > are as the absorbent commodity that in above-mentioned < 28 >～< 30 >, any one is recorded, and mix to have bonding portion and non-bonded part divides at the back side of above-mentioned positive dough sheet protuberance with the abutment portion of above-mentioned sublayer.
< 32 > are as absorbent commodity that in above-mentioned < 28 >～< 31 >, any one is recorded, abutment portion in the back side of above-mentioned positive dough sheet protuberance and above-mentioned sublayer, above-mentioned sublayer forms to the recess of non-skin contact face side depression, and the back side protuberance of above-mentioned positive dough sheet enters the recess of this sublayer and contacts with it.
< 33 > are as the absorbent commodity that in above-mentioned < 28 >～< 32 >, any one is recorded, and the region area of the abutment portion of above-mentioned sublayer and back side protuberance is more than 1/20 and is below 2/5 with respect to the ratio of the area of the sheet of above-mentioned sublayer.
< 34 > are as the absorbent commodity that in above-mentioned < 28 >～< 33 >, any one is recorded, with the fibre density of sublayer in the abutment portion of the back side protuberance of above-mentioned positive dough sheet be 15/mm 2above and be 120/mm 2below.
< 35 > are as the absorbent commodity that in above-mentioned < 28 >～< 34 >, any one is recorded, and above-mentioned sublayer consists of hot-wind nonwoven cloth.
< 36 > are as absorbent commodity that in above-mentioned < 28 >～< 35 >, any one is recorded, in above-mentioned sublayer, the thickness of the compact part that the fibre density of above-mentioned abutment portion is high is more than 30% and below 90% with respect to the thickness of comparing the part of rarefaction that fibre density is low with this compact part.
< 37 > are as the absorbent commodity that in above-mentioned < 28 >～< 36 >, any one is recorded, and the fibre density of the non-woven fabrics of the above-mentioned positive dough sheet in the recess of the above-mentioned back side has density contrast or the density gradient increasing to bottom from top.
< 38 > are as the absorbent commodity that in above-mentioned < 1 >～< 37 >, any one is recorded, and above-mentioned positive dough sheet consists of hydrophilic non-woven fabrics.
< 39 > are as the absorbent commodity that in above-mentioned < 1 >～< 38 >, any one is recorded, and above-mentioned back sheet is by having water proofing property and having poisture-penetrability and the porous membrane of breathability forms.
< 40 > are as the absorbent commodity that in above-mentioned < 1 >～< 39 >, any one is recorded, and above-mentioned absorbent core consists of paper pulp fiber and superabsorbent polymer.
< 41 > are as the absorbent commodity that in above-mentioned < 1 >～< 40 >, any one is recorded, and above-mentioned emulsion sheet consists of hydrophilic thin paper.
< 42 > are as the absorbent commodity that in above-mentioned < 1 >～< 41 >, any one is recorded, and absorbent commodity is flat type disposable diaper.
< 43 > are as the absorbent commodity that in above-mentioned < 1 >～< 41 >, any one is recorded, and absorbent commodity is pull-on disposable diaper.
< 44 > are as the absorbent commodity that in above-mentioned < 1 >～< 41 >, any one is recorded, and absorbent commodity is pull-on disposable diaper and the diaper that can be used as banding pattern when by its part fracture.
Embodiment
Below, based on embodiment, the present invention will be described in more detail, but the present invention is not defined and is separated Taishaku by these embodiment.
About the first embodiment, represent following embodiment 1 and 2 and comparative example 1 and 2.
［ embodiment 1 ］
Making by core is that polyethylene terephthalate and sheath are that the fibre web of the core-sheath-type composite fibre that forms of polyethylene is fixed on fibre web size enlargement apparatus, to the fibre web blowing hot-air on its pedestal, projection in said base is carried out figuration to fibre web, and make each fiber fusion, form therefrom the positive back side and be the concaveconvex shape (pitch (w between the top 7a-7a of back side recess 1) degree of depth (h of 5mm and back side recess 1) 2mm) and Fig. 4 shown in the figuration sheet of shape, using it as positive dough sheet, use.Sequentially the back sheet of stacked non-liquid permeability, the hydrophilic paper of take cover absorbent core (paper pulp grammes per square metre are 200g/m 2, superabsorbent polymer grammes per square metre is 286g/m 2) absorber, positive dough sheet, by heat fusing, each several part is bonding.Back sheet, absorber shape, structure are that to be made as diaper " the dry and comfortable vapor-permeable type M of Merries code " (trade name) existing commercially available product of manufacturing with corresponding Kao Corp identical.Now, the bonding agent coating density (q between positive dough sheet and emulsion sheet 1) be 15g/m 2, the coating density (q of the hot-melt adhesive between emulsion sheet and absorbent core 2) be 5g/m 2.By by this laminated samples pressing suitable condition lower seal room temperature preservation 1 month with diaper goods encapsulation, form the portion that enters of emulsion sheet.
The degree of depth (the h of this back side recess 1) be average 1.5mm.In addition, enter the penetration depth (h of portion 2) be average 1.3mm.(h 2)/(h 1) ratio that becomes more than 50% back side recess is 95%.In addition, (h 2)/(h 1) become in more than 50% back side recess, the ratio that (100%) enters is completely 60%.
［ embodiment 2 ］
The laminated samples of embodiment 1 is being encapsulated to the sample of pressing suitable condition lower seal the room temperature preservation sample of 3 days to be made as embodiment 2 with diaper goods.
(1) degree of depth (h of this back side recess 1) be average 2.0mm.
(2) enter in addition, the penetration depth (h of portion 2) be average 0.8mm.
(3) (h 2)/(h 1) ratio that becomes more than 50% back side recess is 30%.
(4) (h 2)/(h 1) become in more than 50% back side recess, the ratio that (100%) enters is completely 5%.
［ comparative example 1 ］
Commercially available disposable diaper (trade name " the dry and comfortable vapor-permeable type M of Merries the code ") same specification that Jiang Yu Kao Corp manufactures and the hand work that only do not carry sublayer be 1 sample as a comparative example.
［ comparative example 2 ］
To by core, be that polyethylene terephthalate and sheath are that the smooth hot-wind nonwoven cloth that forms of poly core-sheath-type composite fibre is as positive dough sheet, same with embodiment 1,2, sequentially the back sheet of stacked non-liquid permeability, the hydrophilic paper of take cover absorbent core (paper pulp grammes per square metre are 200g/m 2, superabsorbent polymer grammes per square metre is 286g/m 2) absorber, positive dough sheet, by the bonding each several part of heat fusing.Only take out the pedestal that above-mentioned fibre web is carried out to the device of figuration, in the mode of pedestal projection and positive dough sheet side contacts, be placed on the positive dough sheet of sample and pressurize static placements l month, formation is formed with the sample of the comparative example 2 of the one-piece type concaveconvex shape of positive dough sheet, absorber.
[performance evaluation]
For the sample (disposable diaper) of embodiment and comparative example, measure the liquid diffusion area in each layer of positive dough sheet, emulsion sheet, absorbent core.As determination test, by two kinds of tests of following (1) and (2), undertaken.In addition, the diffusion of liquid in absorbent core is below sample, to place projection arrangement, irradiates that the light time sees through and the diffusion zone of the red artificial urine that obtains.
(testing 1)
First, each sample for embodiment 1,2 and comparative example 1,2, by the sample of planar development from veutro absorber end at the support or oppose absorber width central part of side end 155mm of long side direction, be made as liquid decanting point, use pump to inject 40g artificial urine with the speed of 5g/sec.The composition of artificial urine is carbamide 1.94 % by weight, sodium chloride 0.795 % by weight, magnesium sulfate 0.11 % by weight, calcium chloride 0.062 % by weight, potassium sulfate 0.197 % by weight, Amaranth (dyestuff) 0.010 % by weight, water 96.88 % by weight and polyoxyethylene laurel ether (approximately 0.07%) and surface tension is adjusted into 53 ± 1dyne/cm(23 ℃).In static placement, after 10 minutes, peel off positive dough sheet and take, the diffusion area of artificial urine is described to the sheet to OHP.For the absorber top emulsion sheet of peeling off after positive dough sheet, take too, and the diffusion area of artificial urine is described to the sheet to OHP.Sample is placed in projection table, from back sheet side, irradiates light and see through, the diffusion zone of the artificial urine obtaining is described to the sheet to OHP.By scanner, obtain the image of OHP sheet and use image analysis software Image-Pro Plus(NIPPON ROPER to manufacture) calculating diffusion area.
(testing 2)
Each sample for embodiment 1 and comparative example 1, by the sample of planar development from veutro absorber end at the support or oppose absorber width central part of side end 155mm of long side direction, be made as liquid decanting point, use pump to inject 40g artificial urine with the speed of 5g/sec.In static placement, after 10 minutes, from top, take, further with the speed of 5g/sec, from this decanting point, inject 40g artificial urine.Further in static placement, after 10 minutes, similarly carry out the analysis of diffusion area with test 1.In test 2, cannot realize the analysis of injecting the diffusion area after 40g.In test 2, according to the photograph image of taking before artificial urine injection for the second time, confirm: identical with the above-mentioned sample of test l by the artificial urine disperse state that artificial urine is injected on the positive dough sheet presenting for the first time.
Above-mentioned evaluation result is represented in following table 1 and 2.The range of scatter of the liquid of the sample using in Figure 11 and 12 expression aforesaid liquid diffusion tests in addition.The measurement result that table 1 and Figure 11 represent above-mentioned (testing 1).The measurement result that table 2 and Figure 12 represent above-mentioned (testing 2).The value of injection 40g in table 2 and Figure 12 is in order relatively to enumerate at the embodiment 1 of test 1 enforcement and the value separately of comparative example 1.In Figure 11 and 12, the range of scatter of the liquid of positive dough sheet is represented by the part that marks black circle in photo at captured replacement figure, and the liquid range of scatter of emulsion sheet and absorbent core is expressed as the part of being surrounded by black line.
The variation of the liquid diffusion area of each interlayer in each sample shown in Figure 11 and 12, further the difference of the area of 1,2 of embodiment 1,2 and comparative examples is corresponding with the measurement result of table 1 and 2.
Table 1
Figure BDA0000448777130000491
From the result shown in table 1 and Figure 11, embodiment 1 compares with comparative example l with 2 disposable diaper, has suppressed the diffusion of the liquid of positive dough sheet, on the other hand, in the internal structure of the positive dough sheet below that emulsion sheet or absorbent core are such, liquid is fully spread, no less than comparative example.And then from the result shown in table 2 and Figure 12, about the disposable diaper of embodiment 1, twice liquid in test 2 injects with the only liquid of 1 time of test l and injects, the liquid diffusion area of positive dough sheet is suppressed to the size that essence is identical.In addition, although the disposable diaper of embodiment 1 has suppressed the liquid diffusion of positive dough sheet, in absorber inside, still according to its accumulation of fluid amount, fully spread.In contrast, in comparative example, the liquid diffusion area of testing the positive dough sheet after twice liquid injection in 2 becomes the area of approximately 2 times of testing the 1 liquid diffusion area that only liquid of 1 time injects.
From above-mentioned situation, the disposable diaper of embodiment can be obtained the action effect of following excellence: the number of amount of liquid such as excretion repeatedly no matter, all can be suppressed at the diffusion of the liquid of positive dough sheet, and promptly suck liquid and make it in absorber diffusion inside and absorption maintenance effectively, thus, suppress soaking of skin, brought good wearing feeling.
About the second embodiment, represent following embodiment 21 and comparative example 21～23.
[embodiment 21]
Making by core is that polyethylene terephthalate and sheath are that the fibre web of the core-sheath-type composite fibre that forms of polyethylene is fixed on fibre web size enlargement apparatus, to the fibre web blowing hot-air on its pedestal, projection in said base is carried out figuration to fibre web, and make each fiber fusion, form therefrom the positive back side and be the concaveconvex shape (pitch (w between the top 7a-7a of the back side, end recess 7w 1) degree of depth (h of 5mm and the back side, end recess 7w 1) 1.3mm) and Fig. 4 shown in the figuration sheet of shape, using it as positive dough sheet.
The positive dough sheet of the diaper " the dry and comfortable vapor-permeable type M of Merries code " (trade name) that Kao Corp is manufactured changes the positive dough sheet obtaining in above-mentioned operation into and is engaged.In addition, the part by end that does not dispose absorber of the drosal part of this diaper and veutro portion is made as the stepped construction of above-mentioned positive dough sheet, back sheet and outer non-woven fabrics.Then, make the drosal part of this diaper and the part by end that does not configure absorber of veutro portion by pressurizeing between backer roll and backing roll, formation has one skin side variant part and Figure 14 of the non-skin side of one variant part or the end laminated section shown in Figure 15, is made as the test body 1A of embodiment 21.
In this end laminated section, the degree of depth (h of the back side, the end recess 7w of positive dough sheet 1) be average 1.0mm.In addition, the penetration depth (h of the protrusion of back sheet 4) be average 0.8mm.(h 4)/(h 1) ratio that becomes more than 50% back side, end recess 7w is 90%.In addition, (h 4)/(h 1) become in more than 50% back side, end recess 7w, the ratio that (100%) enters is completely 50%.
Then, the drosal part for above-mentioned diaper test body 1A cuts the test body 1B using it as embodiment 21 from diaper end side with long side direction 40mm, width 70mm.And then for the drosal part of above-mentioned diaper test body 1A, 1B is different from test body, cuts the test body 1C using it as embodiment 21 from diaper end side with long side direction 45mm, width 130mm.The sag and swell of the cross sectional shape of test body 1B and 1C for representing as medelling in Figure 23 (a).
[comparative example 21]
In the test body 1A of embodiment 21, do not form one skin side variant part and the non-skin side of the one variant part by pressurizeing, realized, obtain the test body that back sheet is kept to the diaper of flat condition.At this end laminated section, the degree of depth (h of the back side, the end recess 7w of positive dough sheet 1) be average 1.0mm.In addition, the penetration depth (h of the protrusion of back sheet 4) be average 0mm.By its test body 11A of 21 as a comparative example.In addition, the drosal part for test body 11A cuts with long side direction 40mm, width 70mm from diaper end side, by its test body 11B of 21 as a comparative example.And for the drosal part of test body 11A, 11B differently cuts with long side direction 45mm, width 130mm from diaper end side with test body, by its test body 11C of 21 as a comparative example.The cross sectional shape of test body 11B and 11C is the sag and swell as medelling ground represents in Figure 23 (b).
[comparative example 22]
By hand work as described below 22 test body 12A as a comparative example, commercially available disposable diaper (trade name " the dry and comfortable vapor-permeable type M of Merries the code ") part that this hand work Shi Jianggai Kao Corp manufactures changes, do not configure elastomer and the buffering non-woven fabrics in the outside, long side direction dorsal part end that is disposed at absorber that commercially available product possesses, and directly fit positive dough sheet and back sheet and form.In its end laminated section, the degree of depth (h of the back side, the end recess 7w on the upper strata of double-deck positive dough sheet 1) be average 0.4mm.In addition, the penetration depth (h of the protrusion of back sheet 4) be 0mm.In addition, the drosal part for test body 12A cuts with long side direction 40mm, width 70mm from diaper end side, by its test body 12B of 22 as a comparative example.And, for the drosal part of test body 12A, with test body 12B differently, from diaper end side, with long side direction 45mm, width 130mm, cut, by its test body 12C of 22 as a comparative example.The cross sectional shape of test body 12B and 12C is the sag and swell as medelling ground represents in Figure 23 (c).In addition, the positive dough sheet of this test body is the two-layer structure of irregular upper strata and smooth lower floor, is expressed as upper strata 11He lower floor 12 in the schematic diagram of Figure 23 (c).
［ comparative example 23 ］
In the test body 11A of comparative example 21, obtain the test body of positive dough sheet being changed into the smooth diaper of no concave-convex.By its test body 13A of 23 as a comparative example.At this end laminated section, there is not recess in the back side of positive dough sheet, so the degree of depth (h of recess 1) and the penetration depth (h of the protrusion of back sheet 4) be 0mm.In addition, the drosal part for test body 13A cuts with long side direction 40mm, width 70mm from diaper end side, by its test body 13B of 23 as a comparative example.And then for the drosal part of test body 13A, 13B is different from test body, from diaper end side, with long side direction 45mm, width 130mm, cut, by its test body 13C of 23 as a comparative example.The cross sectional shape of test body 13B and 13C is the structure as medelling ground represents in Figure 23 (d).
[evaluation]
For each disposable diaper test body of above-mentioned middle making, by following method evaluation liquid fluidity, retractility.Its result is shown in 3 and is represented.
[method of liquid flow test]
Use can apply the acrylic panel on arbitrarily angled making inclined-plane.Make this acrylic panel keep level, the mode above being positioned at positive dough sheet thereon loads and fixation test body 1B and 11B～13B.Then, make acrylic panel keep level, for test body 1B and 11B～13B, the part of leaving 30mm the part of the long side direction end (the end 20a of the diaper 20 of Figure 13) of the diaper of the drosal part from being equivalent to cut is slowly dripped the red artificial urine of 500 μ l with the speed of 100 μ l/s.Thereafter, static placement 1 minute, measures diffusion length now, and the profile of liquid diffusion is described to transparent OHP sheet.Diffusion length express liquid is from the some displacement of (side of inclination) to end of dripping.
Then, tilt the downwards state of 30 ° of the part that makes acrylic panel keep being equivalent to drosal part end (the end 20a of the diaper 20 of Figure 13), static placement 3 minutes.Again measure diffusion length now, and the profile of liquid diffusion is described to transparent OHP sheet.Diffusion area is by the image of scanner scanning OHP sheet and uses image analysis software Image-ProPlus(NIPPON ROPER to manufacture) calculate.Then, using after diffusion length and diffusion area dripping separately with tilt after difference not as mobile distance and flow area.
Above-mentioned measurement is respectively carried out 6 times, and using its meansigma methods as liquid flow, the evaluation result of test represents in following table 3.In addition, by the state of the expansion of the liquid after each test the dripping of body and after tilting at the replacement figure of Figure 24 with representing in photo.Figure 24 takes from positive dough sheet side the photo of respectively testing body.The scope of the expansion of liquid is with respect to the positive dough sheet of white background, to be expressed as the region of the low-light level colors such as black or Lycoperdon polymorphum Vitt.
In addition, above-mentioned diffusion area and diffusion length are the diffusion zones of placing projection arrangement and irradiate the red artificial urine that the light time sees through and obtain below sample.In addition, diffusion length is from the central point that drips to the length of artificial urine to the mobile front end of the part that is equivalent to drosal part end 20a.The composition of the artificial urine of using is the additional molal quantity 41(approximately 0.07% of carbamide 1.94 quality %, sodium chloride 0.795 quality %, magnesium sulfate 0.11 quality %, calcium chloride 0.062 quality %, potassium sulfate 0.197 quality %, Amaranth (dyestuff) 0.010 quality %, water 96.88 quality % and polyoxyethylene laurel ether EO), surface tension is adjusted into 53 ± 1dyne/cm(23 ℃).
[method of retractility test]
For test body 1C and 11C～13C, end in the direction of the diaper width (directions X) before being equivalent to cut is fixed on to autoplotter (autograph), and (Shimadzu Seisakusho Ltd. manufactures: trade name AG-X1KN) on the chuck at two ends, so that become 70mm between chuck.The speed that repeats to divide with 300mm/ is stretched to 5 circulations of operation that are back to initial point after the stress that reaches 6N.Measure in circulation for the first time, go in journey (when load is extended) and return while shrinking (remove the application of force) process with 1,2,3, elongation corresponding to each stress of 4N, the difference conduct " variable that goes journey and return of first circulation is poor " of going journey and return while being recorded in each stress.In addition, same, measure first circulation corresponding with each stress and the elongation that goes journey of the 5th circulation, record the poor as " first circulation is poor with the displacement that goes journey of the 5th circulation " of two circulations." variable that goes journey and return of first circulation is poor " is less and restorative good compared with the deformation of the little end laminated section that means while extending the diaper when shrinking.Therefore, if represent, make at first diaper extend and to be clothed to waist place, lax lessly can obtain good property next to the skin." first circulation is poor with the displacement that goes journey of the 5th circulation ", even if less meaning repeatedly stretched, flexible response is also good.Therefore,, even if represent after diaper is dressed also still to follow because the activity of wearer etc. changes at waist, can obtain good property next to the skin.
The evaluation result of " variable that goes journey and return of first circulation is poor " is represented in following table 4, " first circulation is poor with the displacement that goes journey of the 5th circulation " represented in table 5.
[table 3]
Figure BDA0000448777130000531
(diffusion length: mm)
Figure BDA0000448777130000541
[table 4] (first circulation go the variable of journey and return poor)
Figure BDA0000448777130000542
［ table 5 ］ (first circulation is poor with the displacement that goes journey of the 5th circulation)
Figure BDA0000448777130000543
From the result of the diffusion length of table 3, after dripping (state without external force that keeps level), the test body of embodiment 21 is compared with comparative example 22,23 with comparative example 21, and diffusion length is very short, and liquid is difficult to mobile.In comparative example 22, from just dripping, liquid is long range diffusion immediately, thereby even arrive end, produces leakage.In comparative example 23, be also after just dripping, just to see that situation and liquid that liquid diffuses near end even arrive end and produces the situation of leakage.In addition, in the situation that be applied with external force after inclination, the enlarged degree of the test body of embodiment 21 liquid diffusion of (state without external force that keeps level) from dripping is less, and liquid does not arrive end, does not produce leak of liquid.On the other hand, near the test body after dripping in the relatively little comparative example 21 of diffusion and the diffusion of comparative example 23 only reaches end, all produce leakage and arrive end.
In addition, from the result of the diffusion area of table 3, in the test body of embodiment 21, the resistance of flow is compared with large and be difficult to spread easily, and the retentivity of liquid is larger.On the other hand, known in comparative example 21, though keeping the retentivity of the liquid under level larger, the resistance of flow is less, the distortion when applying external force or inclination and easily make diffusion be easy to expand.In addition, in comparative example 22,23, back sheet is smooth, therefore less to the resistance of liquid diffusion, thus from dripping just long range diffusion immediately.
Consequently, the replacement figure of Figure 24 also displays clearly with the pattern of the black of the diffusion of the express liquid in photo or the low-light level of Lycoperdon polymorphum Vitt.No matter in any situation of the test body 1B of embodiment 21 after dripping and after tilting, above-mentioned pattern is all less and do not arrive end side.In contrast, in comparative example 21, after dripping, pattern is less, but after inclination, liquid diffuses to end side, and in comparative example 22, from dripping, above-mentioned pattern has just arrived end side immediately.In comparative example 23, above-mentioned pattern also arrives near end.Particularly, in comparative example 22 and 23, from dripping, pattern just expands on a large scale.
And, result from table 4 and table 5, in the test body of embodiment 21, " variable that goes journey and return of first circulation is poor " and " first circulation is poor with the position Yi amount of going journey of the 5th circulation " is all less, and no less than the test body that uses the comparative example 21 of fibre web figuration sheet.Known accordingly, the test body of embodiment 21 does not hinder the telescopicing performance of fibre web figuration sheet, and the deformation of the sheet being caused by elongation is less, and flexible response is good.Therefore known, in the diaper of end laminated section of structure that comprises this test body, even the state next to the skin when dressing because of the postural change of wearer or have a meal to wait abdominal circumference generation is changed, the waistline of diaper is also easily followed, and is not prone to gap.
About the 3rd embodiment, open following embodiment 31 and comparative example 31～33.
［ embodiment 31 ］
Making by core is that polyethylene terephthalate and sheath are that the fibre web of the core-sheath-type composite fibre that forms of polyethylene is fixed on fibre web size enlargement apparatus, to the fibre web blowing hot-air on its pedestal, projection in said base is carried out figuration to fibre web, and make each fiber fusion, form therefrom the positive back side and be the concaveconvex shape (pitch (w between the top 8a-8a of back side recess 1) degree of depth (h of 5mm and back side recess 1) 2mm) and Fig. 4 shown in the figuration sheet of shape, and it is used as positive dough sheet.As sublayer, use grammes per square metre 40g/m 2hydrophilic hot-wind nonwoven cloth.Stacking gradually the back sheet of non-liquid permeability, the hydrophilic paper of take covers absorbent core (paper pulp grammes per square metre is 200g/m 2, superabsorbent polymer grammes per square metre is 286g/m 2) absorber, sublayer, positive dough sheet, by the bonding each several part of heat fusing.Bonding between sublayer and positive dough sheet is the spiral pattern that uses heat fusing, and sublayer is mixed existence with the abutting part of dough sheet back side protuberance just by bonding part and non-bonding part.By diaper " the dry and comfortable vapor-permeable type M of Merries code " the identical encapsulation of (trade name) existing commercially available product of this laminated samples Yu Kao Corp manufacture is pressed to suitable condition lower seal room temperature preservation 1 month, form the concaveconvex structure of sublayer and the density of fiber structure.
Fibre density (the m of the compact part of this sublayer 61) and the fibre density (m of part of rarefaction 62) ratio (m 61/ m 62) be 1.65.
［ comparative example 31 ］
The sample that also unsealing is preserved after the laminated samples that makes embodiment 31 is 31 sample as a comparative example.The sublayer of this sample is to be made as the density structure of the sag and swell that do not have as the sample of embodiment 31 and fiber and to keep smooth shape.
［ comparative example 32 ］
By in the formation of the laminated samples of embodiment 31, not stacked sublayer and direct stacked absorber and positive dough sheet between absorber and positive dough sheet, and the sample preserved of unsealing 32 sample (without sublayer) as a comparative example.
［ comparative example 33 ］
The commercially available disposable diaper (trade name " the dry and comfortable vapor-permeable type M of Merries code ") that Kao Corp is manufactured is 33 sample as a comparative example.This sample is that the skin face side of use figuration by heat seal is that concavo-convex and non-skin face side is the smooth positive dough sheet of bilayer, and disposes the diaper of sublayer.
[performance evaluation]
For the sample (disposable diaper) of embodiment and comparative example, measure under pressurized conditions, cut apart while injecting return liquid measure and soak time, at the liquid residue of dough sheet just.As determination test, by two kinds of tests of following (1) and (2), undertaken.
(testing 1)
First, for each sample of embodiment 31 and comparative example 31～33, the absorber width central part at the side end 155mm place of supporting or opposing from veutro absorber end of the sample of planar development is made as to liquid decanting point on long side direction.Liquid decanting point by the acrylic panel of subsidiary injection unit cylindraceous with sample is placed on sample in the central mode of injection unit, and then places counterweight on this acrylic panel, applies 2.0kPa(20gf/cm 2) load.The injection unit that is arranged on acrylic panel is the cylinder that internal diameter is 36mm (being highly 53mm) shape, at acrylic panel, 1/3 part of the central axis that is formed with this cylindric injection unit and long side direction, the central shaft of width are consistent, are communicated with the through hole that the internal diameter between the inside of this cylindric injection unit and the positive dough sheet opposite face of acrylic panel is 36mm.
Maintain the liquid height of 10mm and inject 40g artificial urine from injection unit.Using from starting to be injected into the time of artificial urine till positive dough sheet disappears as soak time.The composition of artificial urine is the additional molal quantity 41(approximately 0.07% of carbamide 1.94 quality %, sodium chloride 0.795 quality %, magnesium sulfate 0.11 quality %, calcium chloride 0.062 quality %, potassium sulfate 0.197 quality %, Amaranth (dyestuff) 0.0l0 quality %, water 96.88 quality % and polyoxyethylene laurel ether EO), and surface tension is adjusted into 53 ± 1dyne/cm(23 ℃).
Take and within 10 minutes, as interval, carry out the injection of 4 these artificial urine static placement after 10 minutes, removal counterweight and acrylic panel, 16 filter paper of overlapping placement (ADVANTEC5C10mm * 10mm) on sample, and then place counterweight thereon, apply 3.4kPa(35gf/cm 2) load.Under this state, place after 2 minutes, measure the quality of the artificial urine being absorbed by filter paper, using this amount as returning liquid measure.
(testing 2)
For each sample of embodiment 31 and comparative example 31～33, the sample of planar development is made as to liquid decanting point from veutro absorber end at the support or oppose absorber width central part of side end 155mm of long side direction.Centered by decanting point, around it, on the positive dough sheet of (10mm * 20mm), engrave vestige in advance, use pump to inject 80g artificial urine with the speed of 5g/sec.In static placement, after 10 minutes, slowly peel positive dough sheet quality measurement.With absorbent paper etc., draw the artificial urine being absorbed by positive dough sheet, positive dough sheet placed and made for 1 evening it dry, using from above-mentioned quality, deduct dry the weight that obtains of quality as liquid residue.
Above-mentioned evaluation result is represented in following table 6.In addition, by Figure 30 and 31, represent the sample using in aforesaid liquid residue test.Figure 30 represents the state after the test of positive dough sheet of the test body of embodiment 31 is implemented, and Figure 31 represents the state after the test of positive dough sheet of the test body of comparative example 31 is implemented.Any one in Figure 30 and Figure 31 is all that (a) represents that skin contact face side, (b) of positive dough sheet represent that non-skin contact face side, (c) are by (b) the local replacement accompanying drawing photo representing that amplifies.Replacing arbitrarily accompanying drawing with in photo, all express liquid is residual for black part.
(table 6)
Figure BDA0000448777130000581
From the result shown in table 6, in the diaper (comparative example 33) of the positive dough sheet of bilayer by heat seal and figuration, even under pressurized conditions, positive dough sheet skin face side concavo-convex also do not enter sublayer and maintains space, therefore infiltration rate is fast, but as liquid residue, be held in the amount of liquid of positive dough sheet inside and return liquid measure, the disposable diaper of embodiment 31 and comparative example 31,32 is less.This be due to, in the disposable diaper of embodiment 31 and comparative example 31,32, because positive dough sheet is concaveconvex shape and is 1 layer, therefore particularly under pressurized conditions thickness reduce, and the back side protuberance of this positive dough sheet enters into more absorber or the sublayer of lower floor.
And, if to having the embodiment 31 of sublayer and comparative example 31 and the disposable diaper of comparative example 32 without sublayer to compare, known, sublayer is suppressing back to bring into play larger effect aspect liquid measure, particularly when injection is cut apart in pressurization, because existing sublayer that liquid measure is significantly reduced.In addition, according to the effect because existing sublayer to become fluffy (volume is large) and temporarily keep liquid to spread on in-plane, it is fast that known and the comparative example 32 without sublayer are compared soak time.
In addition, the disposable diaper of embodiment 31 is compared with comparative example 31, further reduces back liquid measure, and soak time shortens to no less than the degree of comparative example 33, thereby has improved the original function in sublayer.In addition, compare with comparative example 31, liquid residue is inhibited.This situation is known according to following state, that is, the black of the liquid residue in Figure 30 (embodiment 31) is obviously than shallow in Figure 31 (comparative example 31).The result that the liquid residue of this embodiment 31 suppresses represents, can overcome " if there is sublayer; because positive dough sheet becomes apart from absorber compared with far the water absorbing force of absorber being had can't be obtained; be easy to make the liquid residue quantitative change of positive dough sheet many " this problem (comparative example 31), liquid residue is suppressed lowlyer, can reach the level equal with comparative example 32 without sublayer.That is, the disposable diaper of the concavo-convex sublayer of known use embodiment 31 is to realize the excellent diaper have the advantage of sublayer and advantage without sublayer.
The present invention and embodiment thereof are together illustrated, but as long as the inventor etc. do not specify, illustrated arbitrary details does not all limit the present invention, and thinks and can not depart under the spirit of the invention shown in the application's scope and scope Qing Condition and should broadly make an explanation.
The application be based on July 7th, 2011 the Patent 2011-151210 in Japanese publication patent, on November 28th, 2011 the Patent 2011-258874 in Japanese publication patent and on February 8th, 2012 the Patent 2012-025123 in Japanese publication patent and advocate priority, at this, these applications etc. are all usingd reference form and during its content is incorporated herein as the part of this description record.

Claims (26)

1. an absorbent commodity, its have the liquid permeability that is disposed at skin contact face side positive dough sheet, be disposed at the back sheet of non-skin contact face side and the absorber arranging between these two sheets, it is characterized in that:
Described positive dough sheet consists of non-woven fabrics, and described absorber has absorbent core and covers the emulsion sheet of this absorbent core,
In the non-skin contact face side of described positive dough sheet, a plurality of back side recesses to skin contact face side depression are adjacent to decentralized configuration, and described emulsion sheet enters into this back side recess, between the emulsion sheet entering and described absorbent core, has spatial portion at this.
2. absorbent commodity as claimed in claim 1, is characterized in that:
The non-skin contact face side of described positive dough sheet becomes concaveconvex shape by the periodic arrangement of described back side recess.
3. absorbent commodity as claimed in claim 1 or 2, is characterized in that:
The skin contact face side of described positive dough sheet is concaveconvex shape.
4. the absorbent commodity as described in any one in claim 1～3, is characterized in that:
The skin contact face side of described absorbent core is smooth shape.
5. the absorbent commodity as described in any one in claim 1～4, is characterized in that:
The penetration depth of the described emulsion sheet in the described back side recess of described positive dough sheet is the more than 50% of cup depth of described back side recess.
6. the absorbent commodity as described in any one in claim 1～5, is characterized in that:
In the recess of the described back side, between described positive dough sheet and the entering part of described emulsion sheet, there is clearance portion.
7. the absorbent commodity as described in any one in claim 1～5, is characterized in that:
In the recess of the described back side, there is described emulsion sheet and the engaged part of described positive dough sheet.
8. the absorbent commodity as described in any one in claim 1～7, is characterized in that:
Non-skin contact face side at described positive dough sheet disposes a plurality of back sides recess and a plurality of back sides protuberance, and described in each, back side protuberance is surrounded and separate configuration by a plurality of described back sides recess, and the space of described back side recess interconnects.
9. the absorbent commodity as described in any one in claim 1～8, is characterized in that:
Described back side recess has top, side wall portion and the bottom consisting of positive dough sheet, and the density of the non-woven fabrics fiber of this positive dough sheet has density contrast or the density gradient increasing from described top to bottom.
10. the absorbent commodity as described in any one in claim 1～9, is characterized in that:
Described absorbent core has the density structure of fibre density, and has the sparse part part overlapping with described spatial portion of density of this absorbent core.
11. absorbent commodities as described in any one in claim 1～10, is characterized in that:
Described emulsion sheet engages by hot-melt adhesive discontinuously with described absorbent core.
12. absorbent commodities as described in any one in claim 1～11, is characterized in that:
In the cross section of described back side recess, from skin face side to non-skin face side fibre density, become large.
13. absorbent commodities as described in any one in claim 1～12, is characterized in that:
Described absorbent commodity has end laminated section, this end laminated section is by the outside, long side direction end at described absorber, between described positive dough sheet and described back sheet, this absorber is not set and make described positive dough sheet and described back sheet directly or indirectly stacked and laminating form
The opposite face that described end laminated section has described positive dough sheet and described back sheet is out of shape to convex a plurality of one variant parts that form, the plurality of one variant part decentralized configuration on the in-plane of described end laminated section integratedly on thickness direction.
14. absorbent commodities as claimed in claim 13, is characterized in that:
Described positive dough sheet in the laminated section of described end and the opposite face of described back sheet when the cross-section of long side direction, have by the formed distortion of described one variant part the shape of crawling on thickness direction.
15. absorbent commodities as described in claim 13 or 14, is characterized in that:
In the non-skin contact face side of described positive dough sheet, a plurality of back side recesses to skin contact face side depression are adjacent to decentralized configuration, and described back sheet enters into the described back side recess of described end laminated section, forms described one variant part.
16. absorbent commodities as claimed in claim 15, is characterized in that:
Described back side recess in the laminated section of described end is the depression of cone shape roughly.
17. absorbent commodities as described in any one in claim 13～16, is characterized in that:
Described positive dough sheet consists of the non-woven fabrics on two sides with concaveconvex shape.
18. absorbent commodities as described in any one in claim 13～17, is characterized in that:
In the laminated section of described end, between described positive dough sheet and described back sheet, on width, dispose elastomeric element.
19. absorbent commodities as described in any one in claim 13～18, is characterized in that:
In the laminated section of described end, between described positive dough sheet and described back sheet, dispose the sheet being formed by non-woven fabrics.
20. absorbent commodities as described in any one in claim 1～19, is characterized in that:
In the non-skin contact face side of described positive dough sheet, back side protuberance disperse to exist and forms concaveconvex shape, disposes the ，Gai sublayer, sublayer of liquid permeability and the back side protuberance of described positive dough sheet contacts in abutment portion between this positive dough sheet and described absorber,
The fibre density of the described sublayer of described abutment portion is higher than the fibre density of other parts of this sublayer.
21. absorbent commodities as claimed in claim 20, is characterized in that:
The peripheral part of the described back side protuberance of the non-skin contact face side of described positive dough sheet forms from the back side recess of non-skin contact face side direction skin contact face side depression, between this back side recess and described sublayer, be formed with recess spatial portion, be positioned at the fibre density of described sublayer of position of this recess spatial portion than low with the fibre density of the described sublayer of described back side protuberance butt.
22. absorbent commodities as described in claim 20 or 21, is characterized in that:
The described back side protuberance of described positive dough sheet and the abutment portion of described sublayer be, the fibrous structure that the interfibrous gap of two parts is maintained.
23. absorbent commodities as described in any one in claim 20～22, is characterized in that:
At the back side of described positive dough sheet protuberance, mix with the abutment portion of described sublayer and have bonding portion and non-bonded part divides.
24. absorbent commodities as described in any one in claim 20～23, is characterized in that:
Abutment portion in the back side of described positive dough sheet protuberance and described sublayer, described sublayer forms to the recess of non-skin contact face side depression, and the back side protuberance of described positive dough sheet enters the recess of this sublayer and contacts with it.
25. absorbent commodities as described in any one in claim 20～24, is characterized in that:
The region area of the abutment portion of described sublayer and back side protuberance is more than 1/20 and is below 2/5 with respect to the ratio of the area of the sheet of described sublayer.
26. absorbent commodities as described in any one in claim 20～25, is characterized in that:
With the fibre density of sublayer in the abutment portion of the back side protuberance of described positive dough sheet be 15/mm 2above and be 120/mm 2below.
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JP2012025123A JP5882770B2 (en) 2012-02-08 2012-02-08 Absorbent articles
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06277252A (en) * 1993-03-24 1994-10-04 Mitsui Petrochem Ind Ltd Surface sheet of body fluid absorptive article, and method and device for manufacturing the sheet
JP2002029179A (en) * 2000-07-14 2002-01-29 Toppan Forms Co Ltd Delivery slip
JP2002514469A (en) * 1998-05-08 2002-05-21 ザ、プロクター、エンド、ギャンブル、カンパニー Absorber with improved integrity and acceptance
JP2009131593A (en) * 2007-11-02 2009-06-18 Kao Corp Absorbent article

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002291796A (en) * 2001-03-30 2002-10-08 Crecia Corp Absorbent article having transfer sheet with fold
JP4575639B2 (en) * 2001-06-08 2010-11-04 ユニ・チャーム株式会社 Absorbent articles
EP1444970B1 (en) * 2003-02-05 2011-08-17 Kao Corporation Absorbent article
EP1444969B1 (en) * 2003-02-05 2011-08-31 Kao Corporation Absorbent article
JP4822961B2 (en) 2006-07-13 2011-11-24 花王株式会社 Absorbent articles
JP4901436B2 (en) 2006-11-27 2012-03-21 花王株式会社 Absorbent articles
JP4990003B2 (en) * 2007-03-30 2012-08-01 花王株式会社 Absorbent articles
JP5329785B2 (en) * 2007-08-28 2013-10-30 花王株式会社 Absorbent sheet
JP5084434B2 (en) 2007-10-10 2012-11-28 花王株式会社 Top sheet for absorbent article and method for producing the same
JP5086035B2 (en) 2007-11-12 2012-11-28 花王株式会社 Absorbent article surface sheet
JP5166833B2 (en) 2007-11-14 2013-03-21 花王株式会社 Absorbent articles
JP5180659B2 (en) * 2007-12-28 2013-04-10 花王株式会社 Absorbent articles
AU2009216277B2 (en) 2008-02-19 2014-03-06 Unicharm Corporation Absorptive article
JP5441356B2 (en) * 2008-05-15 2014-03-12 ユニ・チャーム株式会社 Top sheet for absorbent article, method for producing the same, and absorbent article using the same
JP5175651B2 (en) * 2008-08-08 2013-04-03 王子ネピア株式会社 Absorbent article and manufacturing method thereof
JP6008485B2 (en) * 2011-09-30 2016-10-19 ユニ・チャーム株式会社 Absorbent articles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06277252A (en) * 1993-03-24 1994-10-04 Mitsui Petrochem Ind Ltd Surface sheet of body fluid absorptive article, and method and device for manufacturing the sheet
JP2002514469A (en) * 1998-05-08 2002-05-21 ザ、プロクター、エンド、ギャンブル、カンパニー Absorber with improved integrity and acceptance
JP2002029179A (en) * 2000-07-14 2002-01-29 Toppan Forms Co Ltd Delivery slip
JP2009131593A (en) * 2007-11-02 2009-06-18 Kao Corp Absorbent article

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103957857A (en) * 2011-12-27 2014-07-30 花王株式会社 Absorbent article
CN103957857B (en) * 2011-12-27 2016-03-02 花王株式会社 Absorbent commodity
CN106232070A (en) * 2014-05-09 2016-12-14 尤妮佳股份有限公司 Absorbent commodity
CN106470653A (en) * 2014-06-30 2017-03-01 尤妮佳股份有限公司 Absorbent commodity and the wearing article with this absorbent commodity
CN106470653B (en) * 2014-06-30 2019-09-17 尤妮佳股份有限公司 Absorbent commodity and wearing article with the absorbent commodity
CN107735061A (en) * 2015-06-08 2018-02-23 株式会社瑞光 A kind of composite sheet and its apparatus and method for manufacturing composite sheet
CN107920929B (en) * 2015-08-31 2018-12-11 尤妮佳股份有限公司 Absorbent commodity
CN107920929A (en) * 2015-08-31 2018-04-17 尤妮佳股份有限公司 Absorbent commodity
TWI744405B (en) * 2016-11-30 2021-11-01 日商花王股份有限公司 Absorbent article and method for manufacturing three-dimensional perforated sheet used therefor
US11253406B2 (en) 2016-11-30 2022-02-22 Kao Corporation Absorbent article and method for manufacturing sheet with three-dimensional opening used therefor
CN112702986A (en) * 2018-09-28 2021-04-23 花王株式会社 Absorbent article
CN114848302A (en) * 2018-09-28 2022-08-05 花王株式会社 Absorbent article
CN114848302B (en) * 2018-09-28 2022-10-28 花王株式会社 Absorbent article

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