CN105263453A - Disposable diaper - Google Patents
Disposable diaper Download PDFInfo
- Publication number
- CN105263453A CN105263453A CN201480032304.4A CN201480032304A CN105263453A CN 105263453 A CN105263453 A CN 105263453A CN 201480032304 A CN201480032304 A CN 201480032304A CN 105263453 A CN105263453 A CN 105263453A
- Authority
- CN
- China
- Prior art keywords
- disposable diaper
- back sheet
- area
- configuring area
- length direction
- 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
Links
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000006096 absorbing agent Substances 0.000 claims description 40
- 238000004049 embossing Methods 0.000 claims description 13
- 230000008859 change Effects 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 210000002414 leg Anatomy 0.000 description 117
- 230000036541 health Effects 0.000 description 22
- 239000000463 material Substances 0.000 description 17
- 239000004745 nonwoven fabric Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 13
- 230000002745 absorbent Effects 0.000 description 11
- 239000002250 absorbent Substances 0.000 description 11
- 239000000758 substrate Substances 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 10
- 210000001124 body fluid Anatomy 0.000 description 8
- 239000010839 body fluid Substances 0.000 description 8
- 210000001217 buttock Anatomy 0.000 description 8
- 239000004744 fabric Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 210000003141 lower extremity Anatomy 0.000 description 7
- 239000000470 constituent Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- 230000003187 abdominal effect Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004831 Hot glue Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000037213 diet Effects 0.000 description 2
- 235000005911 diet Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000004013 groin Anatomy 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- PXFBZOLANLWPMH-UHFFFAOYSA-N 16-Epiaffinine Natural products C1C(C2=CC=CC=C2N2)=C2C(=O)CC2C(=CC)CN(C)C1C2CO PXFBZOLANLWPMH-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920000247 superabsorbent polymer Polymers 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers of the pads
- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from 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 of the pads
- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
- A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
- A61F13/51484—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being inhomogeneous in the plane of the sheet, i.e. having zones of different properties or structures
-
- 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 of the pads
- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
- A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
- A61F2013/51409—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
- A61F2013/51411—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film being impervious to fluids but not for air or vapours
- A61F2013/51421—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film being impervious to fluids but not for air or vapours only in special places
Landscapes
- Health & Medical Sciences (AREA)
- Dermatology (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
A disposable diaper (10) has: a pair of fastening tapes (90); and a liquid impermeable back sheet (60a) which is disposed on the surface of an absorption body which does not come into contact with the skin. The disposable diaper has: a back sheet arrangement region (R1) in which the back sheet (60a) is disposed; and a region (R2) in which the back sheet (60a) is not disposed. The region (R2) in which the back sheet (60a) is not disposed is disposed at the front end section (10F) of the disposable diaper (10) and/or the rear end section (10R) of the disposable diaper. The rate of elongation of the region (R2) in which the back sheet (60a) is not disposed is higher than that of the back sheet arrangement region (R1). As a result of this configuration, the disposable diaper, which of tape type, is capable of appropriately covering the waist of the wearer in a manner corresponding to a change in the dimension of the waist of the wearer.
Description
Technical field
The present invention relates to a kind of disposable diaper.
Background technology
In patent documentation 1, disclose a kind of diaper of banding pattern, this diaper has: absorber; Back sheet, it is configured at the side, non-skin contact face of absorber; And emulsion sheet, it is configured at than the position of back sheet by side, non-skin contact face.Back sheet is formed by the film of opaque liquid, and emulsion sheet is formed (such as with reference to Fig. 2, paragraph 0024, the paragraph 0038 of patent documentation 1) by non-woven fabrics.
Be configured with the back sheet of opaque liquid to rear end from the anterior end of disposable diaper.Thus, even if when body fluid self-priming acceptor seepage, back sheet also can be utilized to suppress body fluid to the outer surface seepage of disposable diaper.
prior art document
patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2006-305104 publication
Summary of the invention
the problem that invention will solve
But described disposable diaper has following problem points.
When dressing the diaper of banding pattern, disposable diaper is configured in the below of the lower crotch of wearer.Then, after utilizing, waist area surrounds the buttocks of wearer, and the magic tape extended from rear waist area is pulled to side, front waist area, thus utilizes magic tape diaper to be fixed on the waistline of wearer.
Disposable diaper not with the state of the body fit of wearer under magic tape is fixed on before waist area time, may the disposable diaper skew when dressing, and there is leakage of body fluids.Thus, dress position that auxiliary fits at the waistline of disposable diaper and wearer usually magic tape is fixed on before waist area.
But the waist size of wearer is not constant all the time, and may become large because of diet of wearer etc.Thus, when the waist size of wearer becomes large, disposable diaper may be excessively closely sealed with health, and cause wearing feeling deterioration.
Particularly, when the waist size of wearer becomes large, the power to width tractive is applied with in the anterior end of disposable diaper and rear end.Usually, the flexibility of flexibility lower than non-woven fabrics of the film of the opaque liquid of back sheet is formed.The back sheet of patent documentation 1 is configured in from the anterior end of disposable diaper in the scope of rear end.Thus, when the waist size of wearer becomes large, the disposable diaper of patent documentation 1 may the change of health of corresponding wearer, causes the anterior end of disposable diaper and rear end to be tightened, and makes wearing feeling deterioration.
So namely the present invention makes in view of described problem, its object is to provide a kind of disposable diaper that can cover the banding pattern of the waistline of wearer with the change in size of the waistline of wearer accordingly rightly.
for the scheme of dealing with problems
Disposable diaper of the present disclosure (disposable diaper 10) has: front waist area (front waist area 20); Rear waist area (rear waist area 30); Lower crotch region (lower crotch region 25), its from described front waist area on the product length direction (product length direction L) of described rear waist area between described front waist area and described rear waist area; Absorber (absorber 40), it crosses over described lower crotch region, and extends at least one in described front waist area and described rear waist area; A pair magic tape (magic tape 90), it is configured in the outboard end on direction, i.e. the product width direction (product width direction W) orthogonal with described product length direction of described rear waist area, is used for and described front waist area set; And the back sheet of opaque liquid (back sheet 60a), it is configured at the side, non-skin contact face of described absorber, wherein, described disposable diaper has when top view: back sheet configuring area (back sheet configuring area R1), is configured with described back sheet at this back sheet configuring area; And the non-configuring area of back sheet (the non-configuring area R2 of back sheet), it is positioned at and does not configure described back sheet at the non-configuring area of this back sheet than described back sheet configuring area by the position outside described product length direction, the non-configuring area of described back sheet is configured at least one in the anterior end (the anterior end 10F of disposable diaper) of described disposable diaper and the rear end (the rear end 10R of disposable diaper) of described disposable diaper, and the percentage elongation of the non-configuring area of described back sheet is higher than the percentage elongation of described back sheet configuring area.
the effect of invention
The disposable diaper of the banding pattern described in employing, can cover the waistline of wearer accordingly rightly with the change in size of the waistline of wearer.
Accompanying drawing explanation
Fig. 1 is the expansion top view of the disposable diaper of present embodiment.
Fig. 2 is the expansion top view of the disposable diaper of present embodiment.
Fig. 3 is the sectional view of the disposable diaper along the F1-F1 line shown in Fig. 1.
Fig. 4 is the sectional view of the disposable diaper along the F2-F2 line shown in Fig. 1.
Fig. 5 is the expansion top view of the disposable diaper of variation.
Detailed description of the invention
Then, the embodiment of disposable diaper of the present invention is described with reference to accompanying drawing.In addition, in figures in the following, same or analogous Reference numeral is marked to same or analogous part.But it should be noted that accompanying drawing is schematic content, the ratio of each size etc. are different from the size of reality.
Thus, concrete size etc. should be judged with reference to the following description.In addition, the relation of size each other, part that ratio is different can also be comprised each other at accompanying drawing.
Fig. 1 and Fig. 2 is the expansion top view of the disposable diaper 10 of present embodiment.Fig. 3 is the sectional view of the disposable diaper 10 along the F1-F1 line shown in Fig. 1.Fig. 4 is the sectional view of the disposable diaper 10 along the F2-F2 line shown in Fig. 1.Expansion top view shown in Fig. 1 and Fig. 2 is the figure that the positive dough sheet 50, flank 70 etc. making the elastic component 81 of leg pars contractilis 75 and leg side rivel 80 be elongated to formation disposable diaper does not form till the state of fold.
Disposable diaper 10 is the disposable diaper of banding pattern.The diaper of banding pattern refers to that the outboard end on the product width direction of outboard end on the product width direction of front waist area and rear waist area does not engage before use and utilizes the diaper that the set component of magic tape etc. engages in use.
Disposable diaper 10 has front waist area 20, lower crotch region 25 and rear waist area 30.Front waist area 20 is the part contacted with the frontal cowl of wearer (abdominal part part).In addition, rear waist area 30 is the part contacted with the rear waist portion (back portion) of wearer.Lower crotch region 25 is between front waist area 20 and rear waist area 30.
In addition, in the present embodiment, be called product length direction L by from front waist area 20 towards the direction of rear waist area 30, the direction with the L-orthogonal of product length direction be called product width direction W.
Disposable diaper 10 comprises absorber 40, and this absorber 40 crosses over lower crotch region 25, and from lower crotch region 25 towards at least any one extension in front waist area 20 and rear waist area 30.Absorber 40 comprises absorbent core 40a and core covering 40b.
Absorbent core 40a is identical with the absorbent core of disposable diaper in the past, can use the known component such as comminution pulp, superabsorbent polymer, material suitably forms.Absorbent core 40a is coated by the core covering 40b of lamellar.
Core covering 40b is the sheet material covering absorbent core 40a.A part for the side, at least skin face of core covering 40b is formed by the various fabric nonwoven cloth or cotton paper sheets with liquid permeability.Grammes per square metre such as can be used to be about 10g/m
2~ 30g/m
2hot blast fabric nonwoven cloth, spun-bonded non-woven fabrics, SMS (spunbond-melt blown-spunbond) non-woven fabrics or grammes per square metre be about 10g/m
2~ 30g/m
2cotton paper sheets.
The positive dough sheet 50 of liquid permeability is provided with in the face side (side, skin contact face) of absorber 40.In addition, the back sheet 60a of opaque liquid is provided with in the rear side (side, non-skin contact face) of absorber 40.The rear side (side, non-skin contact face) of sheet 60a is provided with outer load 60 overleaf.
The material of back sheet such as can applying unit area weight 10g/m
2~ 30g/m
2the polyethylene film of opaque liquid.The material of outer load can use by weight per unit area 10g/m
2~ 35g/m
2spun-bonded non-woven fabrics, hot-wind nonwoven cloth and the some bonded non-woven fabrics etc. that are formed such as polyethylene/polypropylene fiber.The percentage elongation of back sheet can be made lower than the percentage elongation of other sheet materials (outer load 60, positive dough sheet 50 and flank 70) of formation disposable diaper.
Under the depression angle of the expansion top view shown in Fig. 1 and Fig. 2, disposable diaper has: back sheet configuring area R1, is configured with back sheet at this back sheet configuring area R1; And the non-configuring area R2 of back sheet, it is positioned at the position by (front side or rear side) outside product length direction of back sheet configuring area and does not configure back sheet at the non-configuring area R2 of this back sheet.In fig. 2 different oblique lines is marked respectively to represent back sheet configuring area R1 and the non-configuring area R2 of back sheet to back sheet configuring area R1 and back sheet non-configuring area R2.
The non-configuring area R2 of back sheet is configured at the anterior end 10F of disposable diaper and the rear end 10R of disposable diaper.Back sheet non-configuring area R2 is configured on the whole product width direction of the anterior end 10F of disposable diaper.Back sheet non-configuring area R2 is configured on the whole product width direction of the rear end 10R of disposable diaper.
In addition, the non-configuring area R2 of back sheet both can be configured in the region of the part on the product width direction of the anterior end 10F of disposable diaper, also can be configured in the region of the part on the product width direction of the rear end 10R of disposable diaper.The non-configuring area R2 of back sheet can also be configured at the anterior end 10F of disposable diaper or the rear end 10R of disposable diaper.
The percentage elongation of the non-configuring area of back sheet is greater than the percentage elongation of back sheet configuring area.The percentage elongation of back sheet configuring area is preferably 1.01 times ~ 1.12 times.The percentage elongation of the non-configuring area of back sheet is preferably 1.14 times ~ 1.35 times.
In addition, the percentage elongation of back sheet configuring area refers to the elongation degree of back sheet configuring area, and the percentage elongation of the non-configuring area of back sheet refers to and the elongation degree of the non-configuring area of back sheet specifies in the following way.
Percentage elongation=(length of the back sheet configuring area after elongation) ÷ (length of the back sheet configuring area before elongation) of back sheet configuring area
Percentage elongation=(length of the non-configuring area of the back sheet after elongation) ÷ (length of the non-configuring area of the back sheet before elongation) of the non-configuring area of back sheet
In this manual, the percentage elongation of back sheet configuring area and the percentage elongation of the non-configuring area of back sheet are such as set as measuring in the following way.
First, when disposable diaper 10 is enclosed in packaging etc., from packaging, disposable diaper 10 is taken out.Then, till the elastic component 81 of leg pars contractilis 75 and leg side rivel 80 being elongated to form the positive dough sheet 50 of disposable diaper and flank 70 etc. not to form the state of fold, in this condition, the length before the elongation of each sample is measured.Specifically, labelling is added in the position (position corresponding with the distance between fixture) of a pair fixture stated after clamping, measures the distance between this labelling.This distance is set as " length of the back sheet configuring area before elongation " and " length of the non-configuring area of the back sheet before elongation ".
Then, the sample of the back sheet configuring area R1 being configured with back sheet is cut out.Now, cut with also comprising the outer load engaged with back sheet.Then, cut out and do not configure back sheet and the sample being positioned at configuring area R21 more non-than the back sheet of the position of the forward side of back sheet configuring area or rear side.Specifically, cut out outer load, positive dough sheet and flank 70, or cut out outer load and positive dough sheet.Length (width) on the width of sample is set to 25mm, the length on the length direction of sample is set to more than the length by holder described later.Specifically, the length on the length direction of sample is set at more than 95mm.In addition, be configured with the region of waistline pars contractilis, cutting with also comprising waistline pars contractilis.
Each sample is placed in assay device.Specifically, a pair fixture is utilized to clamp both ends on the length direction of each sample respectively.Then, a fixture is configured in the end of the upside of sample, another fixture is configured in the end of the downside of sample, connect counterweight at the fixture of the end being configured at downside.The total weight of fixture of end of the downside making counterweight and be configured at sample is 250g.Then, the position of the fixture of upside is fixed, and suspend sample, the fixture of downside and counterweight in midair.By each sample suspention being got up, measure the fixture distance each other during static 3 seconds of the elongation of each sample.This distance is set to " length of the back sheet configuring area after elongation " and " length of the non-configuring area of the back sheet after elongation ".
Use these measurement results, utilize described formula to calculate, thus can percentage elongation be measured.In addition, the measurement of " length " in this description is elasticity tape measure by using affine mensuration Co., Ltd. of Japan (tape portion: be base material with glass fibre take polrvinyl chloride as cover layer) and to make its mode extended along measuring object position measure length.Under each state, above-mentioned measurement is carried out for 10 samples, and its meansigma methods is set to the length as aforesaid measurement result.
Both side edges portion on the product width direction W of absorber 40 is respectively equipped with flank 70.Flank 70 crosses over front waist area 20, lower crotch region 25 and rear waist area 30, and is configured at than absorber 40 by the position outside product width direction.Flank 70 is formed by the non-woven fabrics that one or more is laminated.
A pair leg opening part 35 is formed at the flank 70 of disposable diaper 10.Leg opening part 35 is located at the both side ends on the product width direction of disposable diaper respectively, for the lower limb along wearer under the state of being worn by wearer at disposable diaper encloses the part of configuration.Leg opening part 35 is towards the central concave on the product width direction of absorbent main body.
In addition, magic tape 90 is respectively equipped with at a pair flank 70.Magic tape 90 extends along product width direction W in rear waist area 30, by being bonded to the non-skin contact face of front waist area 20, makes disposable diaper 10 closely sealed with the health of wearer.
Target portion 95 is configured at the non-skin contact face in front waist area, is configured to for a pair magic tape 90 set respectively.
In the present embodiment, waistline maintaining part is formed by front waist area 20, rear waist area 30 and magic tape 90.The waistline maintaining part of rear waist area 30 is the part extended to product width direction from the region of the joint portion being provided with magic tape 90.The waistline maintaining part of front waist area 20 is the part extended to product width direction from the region being provided with target portion 95.
Be provided with a pair leg pars contractilis 75 at flank 70, this pair leg pars contractilis 75 is configured at than leg opening part 35 by the position inside product width direction, can stretch along product length direction L.
As long as leg pars contractilis 75 is configured to make leg opening part 35 can stretch along product length direction, both can configure along leg opening part 35, the state configuration also can tilted relative to leg opening part 35 with a part.
In addition, be configured with auxiliary telescopic portion 77 than leg pars contractilis 75 by the position outside product width direction, lower crotch region 25 and the configuration of ground, rear waist area 30 are crossed over by this auxiliary telescopic portion 77, and flexible along product length direction.Leg pars contractilis 75 and auxiliary telescopic portion 77 are all configured between back sheet 60a and outer load 60.
In addition, the part that leg pars contractilis 75 and auxiliary telescopic portion 77 shrink along product length direction in fact for utilizing rubber band etc. is the concept except the part except being configured with elastic component under the state not playing contractility.
Leg pars contractilis 75 is configuring along product length direction L by the position outside product width direction than absorber 40, is configured to stretch along product length direction L.Leg pars contractilis 75 comprises: the 1st leg pars contractilis 751, and it is positioned at than the central point O2 on the product width direction of the outboard end 40T on the product width direction of the medial end 35I on the product width direction of leg opening part 35 and absorber 40 by the position inside product width direction; And two the 2nd leg pars contractilis 752, it is positioned at than central point O2 by the position outside product width direction.The elastic component of present embodiment comprises polyurethane elastomeric fiber, natural rubber.
Auxiliary telescopic portion 77 is formed by the elastic component (in the example in fig 1, by an elastic component) of regulation radical.The elastic component of present embodiment comprises polyurethane elastomeric fiber, natural rubber.Flank 70 can be made along the buttocks heaved that has of wearer by making the regional integration being provided with auxiliary telescopic portion of flank 70 shrink equably, therefore, it is possible to this region is not tilted cover buttocks.
Under the elongation state of disposable diaper, the center O3 on the product length direction of leg pars contractilis 75 is positioned at than the center O1 position on the front on the product length direction of disposable diaper.In addition, under the elongation state of disposable diaper, the center O4 on the product length direction of leg opening part 35 is positioned at than the center O1 position on the front on the product length direction of disposable diaper.
The anterior end 77F in auxiliary telescopic portion 77 is configured at the position of the anterior end 75F side rearward than leg pars contractilis 75.Thus, the anterior end 75F regions contract rearward that auxiliary telescopic portion 77 makes than leg pars contractilis 75 is utilized.The rear end 77R in auxiliary telescopic portion 77 is configured at the position of the rear end side rearward than leg pars contractilis.Thus, auxiliary telescopic portion 77 is utilized to make than leg pars contractilis 75 regions contract rearward.
The contraction flow region of the ruffle shape utilizing leg pars contractilis 75 and auxiliary telescopic portion 77 to shrink is formed at flank 70.Utilize leg pars contractilis 75 and auxiliary telescopic portion 77 can make the contraction flow region of ruffle shape and health closely sealed.In addition, the distance in leg opening part in product width direction between the medial end 35I of the position of inner side and leg pars contractilis is less than the distance between leg pars contractilis and auxiliary telescopic portion.Thus, leg pars contractilis is utilized can to suppress being involved in of the medial end of leg opening part.In addition, by configuring auxiliary telescopic portion from lower crotch to the scope of rear waist area, the regional integration being configured with auxiliary telescopic portion of flank is made easily to maintain the shape of expansion.
And the ruffle formed by leg pars contractilis 75 and auxiliary telescopic portion 77 stretches along product length direction, therefore ruffle (fold) extends along product width direction.This ruffle (fold) becomes obstruction, thus the end, product width direction of rear waist area can be prevented to be rolled into inside product width direction.
Under the naturalness of disposable diaper 10, the medial end 35I of leg opening part is positioned at by the center on the product width direction in the 2nd leg pars contractilis 752 and auxiliary telescopic portion 77 and along in the centre line L 2 in product length direction.According to such structure, by the medial end utilizing leg pars contractilis and auxiliary telescopic portion to mention leg opening part, being involved in of the medial end of leg opening part can be prevented.Thereby, it is possible to make the medial end of leg opening part along configuring corporally.
The percentage elongation of leg pars contractilis 75 is preferably 1.7 times ~ 2.4 times.In the present embodiment, the percentage elongation of leg pars contractilis 75 is set as 1.9 times ~ 2.2 times.In addition, percentage elongation refers to the elongation degree of leg pars contractilis, specifies in the following way.
Percentage elongation=(length under the elongation state of leg pars contractilis) ÷ (length under the naturalness of leg pars contractilis) of leg pars contractilis
In addition, the percentage elongation in auxiliary telescopic portion 77 is preferably 1.6 times ~ 2.4 times.In addition, the percentage elongation in auxiliary telescopic portion 77 refers to and the degree of the elongation in auxiliary telescopic portion specifies in the following way.
Percentage elongation=(length under the elongation state in the auxiliary telescopic portion) ÷ (length under the naturalness in auxiliary telescopic portion) in auxiliary telescopic portion
The percentage elongation of leg pars contractilis and the percentage elongation in auxiliary telescopic portion are such as measured in such a way.
First, when disposable diaper 10 is enclosed in packaging etc., from packaging, disposable diaper 10 is taken out.Then, the configuring area of leg pars contractilis is cut out.Now, cut out the configuring area of leg pars contractilis with also comprising the outer load that engages with leg pars contractilis.Measure the percentage elongation of the sample of the leg pars contractilis cut out, thus measure the percentage elongation of leg pars contractilis.
By each sample 20 DEG C ± 2 DEG C, relative humidity be the environment of 60% ± 5%RH under place 60 minutes.Then, the length of leg pars contractilis is measured along telescopic direction.By this length setting be " length under the naturalness of leg pars contractilis ".
Then, after measuring the length of the desired region under this state (i.e. naturalness) in telescopic direction, measure sample extended to from naturalness by range estimation cannot till non-telescoping sheet observes the state of the fold produced because of elastic component time the length of desired region in telescopic direction.This length is set to " length under the elongation state of leg pars contractilis " or " length in the auxiliary telescopic portion under elongation state ".
By using these measurement results and utilizing described formula to calculate, measure percentage elongation.
In addition, the leg side rivel 80 as the offside rivel extended along product length direction L is provided with in the inner side (near the central authorities on the W of product width direction) of a pair leg pars contractilis 75.Leg side rivel 80 is located at the medial end on the product width direction of flank 70, for being configured at than the flexible rivel of leg pars contractilis 75 by the erecting inside product width direction.Leg side rivel 80 is configured at than leg pars contractilis 75 by the position inside product width direction.A pair leg side rivel separate configuration on product width direction.
Leg side rivel 80 comprises the flank 70 as lateral plate and the elastic component 81 as retractility component.Flank 70 with along product length direction folding line be starting point ground folded.Elastic component 81 is configured in the part be folded of lateral plate each other with elongation state, and flexible along product length direction.Flank 70 is configured to rear end from disposable diaper anterior end.But side rivel is not the whole region be located on the product length direction of flank 70, and is provided at the region of the part comprising product length direction central authorities.In addition, leg side rivel 80 can adopt known structure, specifically, also can be formed by flank 70 and other sheet material.
In addition, the waistline pars contractilis 85 that can stretch along product width direction is provided with between a pair magic tape on product width direction.Waistline pars contractilis 85 shrinks along product width direction each other at magic tape.
In the present embodiment, waistline pars contractilis 85 is formed by Stretchable sheet.The component forming waistline pars contractilis 85 is not particularly limited, and preferably uses the thin as far as possible and component that bending stiffness is low, contracting amplitude-frequency is little.Form waistline pars contractilis 85 by the material utilizing bending stiffness lower, waistline pars contractilis 85 easily bends along health, thus waistline pars contractilis 85 just can will be made along body fit to the health applying load of wearer.In addition, waistline pars contractilis 85 is formed by utilizing the material that contracting width is less, once property diaper can be suppressed in the situation of extending along product width direction at disposable diaper to shrink on product length direction, disposable diaper can be suppressed drop-down to crotch side at the waistline of wearer.
In the present embodiment, waistline pars contractilis 85 employs weight per unit area is 20g/m
2~ 45g/m
2retractility film.
Waistline pars contractilis 85, after 1.5 times ~ 2.5 times that are stretched to the length under non-elongate state (naturalness), utilizes hot-melt adhesive or heat treated etc. to be adhered to outer load 60.
In the present embodiment, waistline pars contractilis 85 is configured between outer load 60 and back sheet 60a.But extend at core covering 40b and lean in the structure of the position outside product length direction than absorbent core 40a, waistline pars contractilis 85 can be configured between core covering 40b and back sheet 60a or between core covering 40b and outer load 60.The position of waistline pars contractilis is not particularly limited.In addition, in the region not configuring absorber, can be configured between flank 70 and back sheet 60a, or between flank 70 and outer load 60.
In addition, the waistline pars contractilis of present embodiment is configured to flexible along product width direction, but waistline pars contractilis also can be configured to stretch along product width direction and product length direction.
Waistline pars contractilis 85 configures in the mode of crossing over back sheet configuring area R1 and the non-configuring area R2 of back sheet in rear waist area 30.In fig. 2, mark oblique line in the stretchable sheet configuring area R3 being configured with waistline pars contractilis 85, represent stretchable sheet configuring area R3.
The percentage elongation of the stretchable sheet configuring area R3 in back sheet non-configuring area R2 is greater than the percentage elongation in the region except stretchable sheet configuring area R3 in the non-configuring area R2 of back sheet.In the present embodiment, the percentage elongation of stretchable sheet configuring area R3 is set as 1.15 times ~ 1.3 times.
The percentage elongation of stretchable sheet configuring area refers to and the elongation degree of stretchable sheet configuring area specifies in the following way.
Percentage elongation=(length under the elongation state of stretchable sheet configuring area) ÷ (length under the naturalness of stretchable sheet configuring area) of stretchable sheet configuring area
In addition, the percentage elongation of stretchable sheet configuring area R3 can utilize the identical measuring method of the percentage elongation of configuring area R2 non-with back sheet to measure.
Magic tape 90 is installed on the region corresponding with rear waist area 30 of flank 70.Magic tape 90 comprises: substrate sheets 91, and itself and flank 70 are connected; And hook tabs 92, it is fixed on substrate sheets 91, is provided with the combination member (not shown) of multiple component as being combined with front waist area.Hook tabs 92 forms the joint portion being provided with combination member.Waistline maintaining part in above-mentioned rear waist area is the region extended to product width direction from hook tabs 92.
Hook tabs 92 is fixed on substrate sheets 91, and specifically, hook tabs 92 is engaged in substrate sheets 91.Joint between hook tabs 92 and substrate sheets 91 is not preferably to make the high mode more than required degree of the rigidity of magic tape 90 carry out.Specifically, the hot-melt adhesive be coated with off and on that hook tabs 92 and substrate sheets 91 preferably utilize point-like, wire or helical form such engages.In addition, hook tabs 92 and substrate sheets 91 also can utilize heat-sealing etc. to engage.
Substrate sheets 91 is formed by the non-woven fabrics of one or more overlap.Substrate sheets 91 can use the non-woven fabrics utilizing the manufacture method manufacture such as spunbond (SB) or spunbond-melt blown-spunbond (SMS).The weight per unit area (multiple when be summation unit area weight) forming the non-woven fabrics of substrate sheets 91 is 30g/m
2~ 120g/m
2, be preferably 40g/m
2~ 90g/m
2.
Target portion 95 is located at the one side by non-skin contact side of the outer load 60 of front waist area.Target portion 95 is configured to the combination member hook for magic tape, and function is waved in the environment-development as the locking system comprising hook and ring.Target portion such as can use hot-wind nonwoven cloth.
Target portion 95 such as can use the thermoplastic synthetic resin film of fabric nonwoven cloth or the TPO be made up of the thermoplastic synthetic resin fiber of TPO.In addition, the ring being installed on target portion can be formed by the thermoplastic synthetic resin of TPO.
In addition, target portion 95 also can use fluffy, by preventing nonwoven surface from fluffing a part of embossing of non-woven fabrics non-woven fabrics.
In addition, also can by being formed the outer load 60 of disposable diaper by non-woven fabrics, the pattern of the installation site representing magic tape 90 is printed on the face of the non-skin contact side of back sheet 60a or outer load 60, or the sheet material of pattern is configured in the non-skin contact side of back sheet 60a or outer load 60, thus target setting portion.
In addition, rear side leg opening part 35R and the area in the region by the center on product width direction and between the straight line L1 parallel with product length direction are greater than the area in front side leg opening part 35F and the region by the center on product width direction and between the straight line L1 parallel with product length direction.Thus, be positioned at and extend out outside product width direction than the flank of the position being positioned at side more forward than the center, product length direction of leg opening part than the flank of the position of side rearward, center, product length direction of leg opening part, therefore, it is possible to the area covering the region of health is larger.
In addition, by the center on product width direction and the straight line L1 parallel with product length direction refers to straight line L1 by the center on the product width direction of disposable diaper and parallel with product length direction.This area be instigate the elastic component 81 of leg pars contractilis 75 and leg side rivel 80 be elongated to cannot by visual observations to form the positive dough sheet 50 of disposable diaper and flank 70 etc. fold state elongation state under area.
The health of wearer is not that front and back are symmetrical, and the surface area of side, back is greater than the surface area of abdominal part side.This is because have buttocks outside the back side direction of wearer.In addition, under the state that wearer has worn disposable diaper, the center O4 on the product length direction of leg opening part 35 easily becomes the position corresponding with the center on the product length direction of the in-leg of wearer.Such as, the rear side leg opening part in the position rearward, center, product length direction than leg opening part is set as the first area with the area in the region by the center on product width direction and between the straight line parallel with product length direction.In addition, the front side leg opening part in the position on the front, center, product length direction than leg opening part is set as second area with the area in the region by the center on product width direction and between the straight line parallel with product length direction.Consider the situation that the first area is identical with second area, or the first area is less than the situation of second area.In these cases, disposable diaper cannot be configured in the mode covering the asymmetrical health in front and back.Therefore, disposable diaper becomes in the part of the side, back of wearer the state tightened, or becomes twisted state in the part of the abdominal part side of wearer.
In addition, consider be positioned at than the center O4 on the product length direction of leg opening part rearward the position of side flank 70 be positioned at the situation more roughly the same than the position of flank 70 on product width direction of the position of the forward side of center O4 on the product length direction of leg opening part.In this case, when leg opening part 35 becomes in the position of the side, back of wearer the state tightened, under the state be worn, the leg opening part 35 of side, rear waist area tilts, and likely causes the buttocks of wearer to expose.In addition, owing to there is not the sufficient area that can cover buttocks, therefore when dressing, sometimes, the end, product width direction of waist area is rolled into inner side, and the buttocks of wearer is exposed.
But, be positioned at and extend out outside width than the flank of the position being positioned at side more forward than the center, product length direction of leg opening part than the flank of the position of side rearward, center, product length direction of leg opening part.Therefore, it is possible to configure disposable diaper in the mode covering the asymmetrical health in front and back, disposable diaper can be configured accordingly with the health of wearer.
Multiple protuberance 36 becoming convex outside product width direction is formed at rear side leg opening part 35R.Protuberance 36 is the part more protruding outside to product width direction than the region, front and back of leg opening part.Leg opening part 35 is enclose with the lower limb of wearer the position contacted, and is the easy part entered towards the inner side of disposable diaper 10.Thus, preferred leg opening part 35 covers health more broadly, special desirably be configured to rear side leg opening part 35R to cover health in a big way.By arranging protuberance 36, increase the area of rear side leg opening part 35R part, and, by being set to convex form by outside the shape orientation of protuberance 36, buttocks can be covered in a big way.
In addition, stress easily concentrates on rear side leg opening part 35R, particularly easily concentrates on the rear portion of rear side leg opening part 35R, is therefore set to preferably by formation protuberance 36 state can disperseing to put on the pressure of skin further in advance.Specifically, be that stress is easily concentrated and also there is the position of situation about forward lapping when wearing disposable diaper 10 near the position of the cardinal extremity of magic tape 90.Therefore, preferably the rear portion of rear side leg opening part 35R is set to convex, thus the pressure putting on skin can be disperseed.
In front side, leg opening part 35F is formed with the recess becoming the shape caved in inside product width direction.Recess 37 is the part caved in inside product width direction than the region of the front and back of leg opening part.Because recess 37 is concavity, therefore easily become the state of the groin along wearer.Therefore, flank 70 and leg pars contractilis 75 are fitted more with wearer, and the motion that can make lower crotch region 25 and wearer independently stably from the front waist area 20 of disposable diaper 10 along health.Such as, even if when creating the action making the narrowed width of absorber 40 such because of the action of the lower limb of wearer, recess 37 also can continue to fit with groin, and the width of absorber 40 can not narrow and can maintain wider state.Protuberance 36 and recess 37, except relaxing except the pressure of skin, also need the health along wearer.
Leg opening part 35 is towards the convex form inside product width direction outside product width, the distance D2 of leg opening part 35 place under the elongation state of disposable diaper 10 in product width direction between the medial end 35I of the position of inner side and leg pars contractilis 75 is less than leg pars contractilis and the auxiliary telescopic portion distance on product width direction, and at below 15mm.
Consider that the distance between the medial end 35I of the leg opening part 35 under the elongation state of disposable diaper 10 and leg pars contractilis 75 is greater than the situation of 15mm.In this case, the contractility produced by leg pars contractilis 75 cannot be applied to the medial end of leg opening part 35, likely causes making leg opening part 35 utilize leg pars contractilis 75 to shrink rightly.In addition, the medial end 35I of leg opening part 35 be by under the state of wearing by the clamping of the leg of wearer and the part closely sealed with wearer.By making distance between the medial end 35I of leg opening part 35 and leg pars contractilis at below 15mm, at least can make the portion retracts closely sealed with wearer of leg opening part, and enclosing configuration along the lower limb of wearer.
Then, the wearing state of the disposable diaper formed like this is described.When dressing disposable diaper 10, the hook tabs 92 of magic tape 90 is bonded to target portion 95, thus keeps disposable diaper at the waistline of wearer.Now, the non-configuring area R2 of back sheet being configured at the anterior end 10F of disposable diaper is configured at the abdominal part of wearer.In addition, the non-configuring area R2 of back sheet being configured at the rear end 10R of disposable diaper is configured at the back of wearer.
Usually, the waist size of wearer is not constant all the time, sometimes becomes large because of diet etc.When the waist size of wearer becomes large, the region that the self-adhesion cingulum that sometimes there is disposable diaper extends to product width direction and the excessively closely sealed situation of health.Particularly, when the waist size of wearer becomes large, sometimes the anterior end of disposable diaper and rear end stronger degree ground closely sealed.Now, the power to product width direction tractive is applied with in the anterior end of disposable diaper and rear end.
The non-configuring area R2 of back sheet is configured with at the anterior end 10F of disposable diaper and rear end 10R.The percentage elongation of the non-configuring area R2 of back sheet is greater than the percentage elongation of back sheet configuring area R1, and therefore back sheet non-configuring area R2 is easier than back sheet configuring area R1 extends.When the waist size of wearer becomes large and has the power of tractive in the width direction in the anterior end of disposable diaper and rear end effect, the anterior end of disposable diaper and rear end are extended along product width direction.
Such as, back sheet configuring area R1 is formed by the film of non-elongate, has during the power along width side's tractive be difficult to extend in effect.That is, back sheet configuring area R1 the waist size because of wearer change and under the state acting on the power on width and under the state not acting on the power on width, length is roughly constant.On the other hand, the non-configuring area R2 of back sheet the waist size because of wearer change and act on the power on width time, extend than the state of the power do not acted on width, and become large than the size that designs.Thereby, it is possible to make the anterior end of disposable diaper and the change in size of rear end 10R according to the change of the waist size of wearer.Thereby, it is possible to cover the waistline of wearer accordingly rightly with the change of the size of the waistline of wearer.The anterior end of disposable diaper and rear end can be suppressed to tighten, suppress the deterioration of wearing feeling.
In addition, the anterior end 10F of disposable diaper and rear end 10R under the state of dressing easily directly and the skin contact of wearer, and closely sealed with the health of wearer.The anterior end 10F of disposable diaper and rear end 10R is laminated with outer load 60, positive dough sheet 50.Usually, the flexibility of flexibility higher than the film of formation back sheet of outer load 60, the just non-woven fabrics of dough sheet 50 is formed.Because the flexibility of the part directly contacted with the skin of wearer improves, therefore, it is possible to reduce the stimulation to skin, wearing feeling improves.In addition, do not configure the film forming back sheet, poisture-penetrability therefore also can be made good, and reduce the stimulation to skin.
Back sheet configuring area R1 extends to the rear end 40R position rearward than absorber 40.Thus, even if when the rear end 40R seepage of body fluid self-priming acceptor 40, the back sheet 60a of opaque liquid also can be utilized to suppress body fluid outside load 60 side seepage.
In addition, back sheet configuring area R1 extends to the center O5 position rearward, product length direction of the hook tabs 92 than magic tape 90.Under the state of dressing disposable diaper, the health of the region that the hook tabs 92 of self-adhesion cingulum extends along product width direction and wearer is closely sealed.Back sheet configuring area extends to the center O5 position rearward, product length direction of the hook tabs 92 than magic tape.Therefore, in the region closely sealed with the health of wearer, region over half on product length direction and the health of wearer closely sealed.After utilizing, the non-configuring area R2 of back sheet of waist area can suppress the diffusion of body fluids at the rear leaking into absorber, and prevents this body fluid from arriving the rear end of disposable diaper.
In addition, back sheet configuring area preferably extends to the position of rear end more than the 5mm rearward than absorber, more preferably extends to the position of rear end more than the 10mm rearward than absorber.Back sheet configuring area extends to the rear of the product length direction center O5 of the hook tabs 92 of magic tape.In addition, from guaranteeing to utilize magic tape be held in the viewpoint in the region of the waistline of wearer and guarantee the viewpoint in the region that magic tape and back sheet configuring area are overlapping in the longitudinal direction, the product length direction length of the hook tabs 92 of magic tape preferably at more than 20mm, more preferably at more than 25mm.
The waistline pars contractilis 85 forming the telescopic sheet at least stretched along product width direction configures in rear waist area with crossing over back sheet configuring area R1 and the non-configuring area R2 of back sheet.The rear end of waistline pars contractilis 85 is positioned at the position of the rear end 10R of disposable diaper, and the anterior end of waistline pars contractilis 85 is positioned at back sheet configuring area R1.
Because waistline pars contractilis 85 is positioned at back sheet configuring area R1, therefore, it is possible to make to prevent the back sheet of leakage of body fluids and health more closely sealed, and antiseep effect can be improved.In addition, waistline pars contractilis 85 exceedes back sheet configuring area R1 and arrives the rear end 10R of disposable diaper, and the region (back sheet non-configuring area R2) therefore exceeding back sheet configuring area R1 also can be closely sealed with the health of wearer.
In addition, when dressing disposable diaper, wearer is made to lie on the disposable diaper of deployed condition, by the magic tape of rear waist area to tractive outside width, and set magic tape.Now, the back sheet non-configuring area R2 in the rear waist area of disposable diaper, the power of tractive outside oriented width is particularly acted at the rear end 10R of disposable diaper.Be easy to utilize waistline pars contractilis 85 that the rear end 10R of back sheet non-configuring area R2, particularly disposable diaper is extended along product width direction, operability during wearing improves.
In addition, by being provided with waistline pars contractilis 85, under the state (wearing effect) of waistline position waistline maintaining part being maintained wearer, be positioned at and lean on the stickiness in the region of the position outside length direction can utilize the contraction of waistline pars contractilis 85 than waistline pars contractilis 85 and improve, easily disposable diaper is maintained the waistline position of wearer.
In addition, also can be that waistline pars contractilis 85 is not only located at rear waist area, also be located at front waist area.The waistline pars contractilis 85 being located at front waist area preferably configures in front waist area, with crossing over back sheet configuring area R1 and the non-configuring area R2 of back sheet.Specifically, preferably, the anterior end of waistline pars contractilis 85 is positioned at the position of the anterior end 10F of disposable diaper, and the rear end of waistline pars contractilis 85 is positioned at back sheet configuring area R1.
Waistline pars contractilis 85 as telescopic sheet extends to than back sheet configuring area by the position outside product width direction.Be easy to utilize waistline pars contractilis 85 to stretch along product width direction by the region outside product width direction than back sheet configuring area.Thus, when dressing, easily by than back sheet configuring area by the region outside product width direction to tractive outside product width direction, operability during wearing improves.
The non-configuring area R2 of back sheet is located at the anterior end 10F of disposable diaper and the rear end 10R of disposable diaper.The non-configuring area R2 of the higher back sheet of percentage elongation is provided with at these both ends of the anterior end 10F of disposable diaper and the rear end 10R of disposable diaper.Thus, when acting on the power had along product width direction tractive, the anterior end 10F of disposable diaper and these both ends of the rear end 10R of disposable diaper are easy to stretch.
Length L12 on the product length direction of the non-configuring area of the back sheet in rear waist area is greater than the length L11 (with reference to Fig. 2) on the product length direction of the non-configuring area of back sheet in front waist area.Be configured with magic tape in rear waist area, therefore the back sheet of rear waist area non-configuring area R2 effect have be greater than before the power to tractive outside product width direction of the non-configuring area of back sheet of waist area.Because the length L12 on the product length direction of the non-configuring area of the back sheet in rear waist area sets longer, therefore, it is possible to guarantee the region of extending in rear waist area in a big way.
Flank as lateral plate is configured in the whole region on the product length direction of disposable diaper.The part be folded of flank does not engage in the anterior end of disposable diaper and the rear end of disposable diaper each other.When engaging between folding flank, this bonding part is hardening, make the skin sense of touch deterioration of this part, or this part is difficult to stretch.
But in the anterior end of disposable diaper and the rear end of disposable diaper, flank does not engage each other.Therefore, it is possible to suppress the rear end of the anterior end of disposable diaper and disposable diaper hardening, flexibility can be guaranteed.In addition, the anterior end of disposable diaper and the rear end of disposable diaper can be suppressed to become and to be difficult to stretch.
The embossing rate of outer load is more than 5% and below 15%.Outside load embossing rate lower than 5% time, have superiority for elongation, but, bad as easily producing in the anti-fluffing needed for outer load.Fluffing is also relevant with the breakage of outer load etc., thus embossing rate is not preferred in intensity below 5%.On the other hand, when the embossing rate of outer load is more than 15%, the fiber of non-woven fabric plate declines relative to the degree of freedom of tractive, causes becoming being difficult to extend (not extending in fact) sheet material.In addition, refer to that the area being formed with embossing is relative to the ratio of entire area in this said embossing rate.
In addition, the rear end comprising absorber at absorber 40 is formed with low rigid portion interiorly, there is not the absorbent cores forming absorber in this low rigid portion, or the weight per unit area of this low rigid portion absorbent cores is lower than the weight per unit area of the absorbent cores of other part.By being provided with low rigid portion in the rear end of absorber, the flexibility of the rear end of absorber improves, in side, rear waist area by waist area layback is near forward time, the rear end of absorber is also easily launched in the width direction.
(3) manufacture method of disposable diaper
Then, an example of the manufacture method of the disposable diaper of present embodiment is described.In addition, unaccounted operation can use existing method in the present embodiment.In addition, manufacture method illustrated is below an example, and other manufacture method also can be utilized to manufacture aforesaid disposable diaper.The manufacture method of disposable diaper at least comprises constituent part formation process, constituent part loads operation, lower limb encloses formation process and cuts operation.
In constituent part formation process, form the constituent part forming disposable diaper.Specifically, such as, stacked absorbing material and form absorber 40.
In constituent part mounting operation, form back sheet to knit on sheet mounting form leg pars contractilis 75 telescopic sheet, form positive dough sheet knit sheet etc. other knit the constituent part that sheet, leakage prevention sheet, absorber, leg pars contractilis 75, auxiliary telescopic portion 77 etc. form disposable diapers 10.
Lower limb encloses formation process and aligns dough sheet 50, outer load 60 and back sheet 60a and cut.Thus, the anterior end 77F in auxiliary telescopic portion 77 is cropped, and the leg opening part 35 that the lower limb that formation is configured at wearer encloses.
Cutting in operation, the continuum being configured with positive dough sheet 50, back sheet 60a, absorber 40 etc. is being cut into the size of a product along product width direction W.Thus, disposable diaper 10 is manufactured.
(4) other embodiment
As mentioned above, disclose content of the present invention by embodiments of the present invention, but, should not be construed form the disclosure the discussion of a part and accompanying drawing for limiting the present invention.To those skilled in the art, various replacement embodiment, embodiment and application technology can be specified from the disclosure.
Then, the disposable diaper 10A of variation is described.In addition, in the disposable diaper 10A of variation, identical Reference numeral is marked to the structure identical with the disposable diaper of embodiment and omits the description.
Fig. 5 is the expansion top view of the disposable diaper 10A of variation.The percentage elongation that the disposable diaper 10A of variation is configured to flank 70 is substantially same with the percentage elongation of back sheet low.Be difficult to extend along product width direction overleaf in sheet non-configuring area R2ly, identical with back sheet configuring area R1 with the region of flank 70 overlap.
The positive dough sheet of the disposable diaper of variation can be used in non-woven fabric plate product width direction alternately with high weight per unit area portion and low weight per unit area portion.By using so positive dough sheet, power concentrates on the boundary in high weight per unit area portion and low weight per unit area portion, contributes to the elongation at extensibility position, promotes to extend.
The disposable diaper of variation is configured to the percentage elongation of percentage elongation higher than back sheet configuring area R1 of region (region between flank 70) R4 not overlapping with flank 70 in the non-configuring area of sheet overleaf R2.When the waist size of wearer becomes large, utilize variation that the rear end of disposable diaper also can be made to extend in the width direction, suppress the anterior end of disposable diaper and rear end to be tightened.
Sheet material is formed by not having because area occupation ratio that point, line pressure flower and the sheet material of hot melt contact that produces or point, line pressure are colored is 5% ~ 15% for the positive dough sheet of formation of this variation or the non-woven fabric plate of outer load.The area occupation ratio of embossing is the area that the is formed with embossing ratio relative to the area of sheet material entirety.Such as, relative to the area of the entirety of outer load, it is the area being formed with the part of embossing of outer load.
In addition, overleaf in the non-configuring area R2 of sheet, the joint of the sheet material forming not overlapping with flank 70 region (region between flank 70) R4 (specifically, positive dough sheet, back sheet, telescopic sheet) each other utilizes the bonding agent (hot-melt adhesive) be coated with off and on to fix.Being coated with off and on is not state with planar coating, and refers to and describe with the bonding agent of wire the state that the spiral-shaped grade of S shape is coated with.Thus, the abutment between sheet material is reduced, and engages the sheet material elongation each other that can not hinder each extensibility.
In addition, in other variation, back sheet configuring area both can be configured at the rear end position on the front than absorber, also can be to be configured at the position on the front, center, product length direction than hook tabs 92.
In other variation, the outboard end on the product length direction of telescopic sheet also can be configured at anterior end position rearward than disposable diaper or the rear end position be on the front configured at than disposable diaper.And the medial end on the product length direction of telescopic sheet also can be configured in outside back sheet configuring area.
In other variation, telescopic sheet also can be configured at than the outboard end on the product width direction of back sheet configuring area by the position inside product width direction.In addition, the outboard end on the product width direction of telescopic sheet also can be consistent on product width direction with the outboard end on the product width direction of back sheet configuring area.
In other variation, back sheet configuring area both can be configured at the anterior end of disposable diaper, also can be configured at the rear end of disposable diaper.
In other variation, length on the product length direction of the non-configuring area of the back sheet in rear waist area both can with the back sheet in front waist area non-configuring area product length direction on length be equal length, also can be less than the length on the product length direction of the non-configuring area of back sheet in front waist area.
In other variation, flank also can be configured at the region of the part on the product length direction of disposable diaper.In addition, the part be folded of flank also can engage in the rear end of the anterior end of disposable diaper and disposable diaper each other.
In other variation, also can not form embossing for load outside.In addition, the embossing rate of outer load both lower than 8%, also can be greater than 16%.
(5) embodiment
The sample of the embodiment 1 ~ 4 of the disposable diaper of present embodiment is used to measure the percentage elongation of back sheet configuring area and the percentage elongation of the non-configuring area of back sheet.
Embodiment 1 and embodiment 2 use the sample of back sheet configuring area R1, and embodiment 3 and embodiment 4 use the sample of the non-configuring area R2 of back sheet.
Each sample have employed by by the center on product width direction and centered by the straight line L1 parallel with product length direction, region symmetrical outside product width direction.The width of each sample is the product length direction of disposable diaper, and the length direction of each sample is the product width direction of disposable diaper.In addition, the length on the length direction of each sample is than " length before elongation " long 20mm of table 1.Each end on the length direction of each sample reserves the clamping amount that 10mm is set to fixture respectively.
The sample of embodiment 1 be the back sheet configuring area that is positioned at than absorber 40 position rearward and be sample length direction on the sample in the region overlapping with flank, both ends.Thus, the sample of embodiment 1 has the part being laminated with positive dough sheet, waistline pars contractilis, back sheet and outer load and the part being laminated with positive dough sheet, waistline pars contractilis, flank, back sheet and outer load.
The sample of embodiment 2 is the back sheet configuring area that is positioned at than absorber 40 position rearward and is the sample in a pair flank region each other.Thus, the sample of embodiment 2 is laminated with positive dough sheet, waistline pars contractilis, back sheet and outer load.
The sample of embodiment 3 be stretchable sheet configuring area R3 in the non-configuring area of back sheet of rear waist area and be sample length direction on the region overlapping with flank, both ends in sample.Thus, the sample of embodiment 3 has the part being laminated with positive dough sheet, waistline pars contractilis and outer load and the part being laminated with positive dough sheet, waistline pars contractilis, flank and outer load.
The sample of embodiment 4 is stretchable sheet configuring area R3 in the non-configuring area of back sheet of rear waist area and is the sample in the region between a pair flank.Thus, the sample of embodiment 4 is laminated with positive dough sheet, waistline pars contractilis and outer load.
The measurement result of the percentage elongation of each sample is represented in table 1.
table 1
The application requires priority based on No. 2013-118176, the Japanese Patent Application of the Japanese publication that on June 4th, 2013 applies for, and quotes the whole contents described in this Japanese publication.
Certainly, the present invention is included in this various embodiments etc. do not recorded.Thus, protection scope of the present invention is only limited by the technical characteristic of the claims gone out according to above-mentioned explanation reasonable generalization.
utilizability in industry
The present application can be applied to the diaper having absorber, be configured at the back sheet of the side, non-skin contact face of absorber, be configured at the banding pattern leaning on the emulsion sheet of the position of side, non-skin contact face than back sheet.
description of reference numerals
10, disposable diaper; 20, front waist area; 25, lower crotch region; 30, rear waist area; 35, leg opening part; 35I, medial end; 35F, front side leg opening part; 35R, rear side leg opening part; 40, absorber; 40a, absorbent core; 40b, core covering; 50, positive dough sheet; 60, outer load; 60a, back sheet; 70, flank (lateral plate); 75, leg pars contractilis; 77, auxiliary telescopic portion; 80, leg side rivel; 81, elastic component; 85, waistline pars contractilis; 90, magic tape; 91, substrate sheets; 92, hook tabs (joint portion); 95, target portion; R1, back sheet configuring area; The non-configuring area of R2, back sheet; L, product length direction; W, product width direction.
Claims (8)
1. a disposable diaper, it has:
Front waist area;
Rear waist area;
Lower crotch region, its on the product length direction extended towards described rear waist area from described front waist area between described front waist area and described rear waist area;
Absorber, it crosses over described lower crotch region, and extends at least one in described front waist area and described rear waist area;
A pair magic tape, it is configured at the outboard end on direction, i.e. the product width direction orthogonal with described product length direction of described rear waist area, is used for being combined with described front waist area; And
The back sheet of opaque liquid, it is configured at the side, non-skin contact face of described absorber, wherein,
Described disposable diaper has when top view: back sheet configuring area, is configured with described back sheet at this back sheet configuring area; And the non-configuring area of back sheet, it is positioned at and does not configure described back sheet at the non-configuring area of this back sheet than described back sheet configuring area by the position outside described product length direction,
The non-configuring area of described back sheet is configured at least one in the anterior end of described disposable diaper and the rear end of described disposable diaper,
The percentage elongation of the non-configuring area of described back sheet is greater than the percentage elongation of described back sheet configuring area.
2. disposable diaper according to claim 1, wherein,
Described magic tape has joint portion, and this joint portion is configured with the component for being combined with described front waist area,
Described back sheet configuring area extends to rear end than described absorber rearward and than the position rearward, center, described product length direction of described joint portion.
3. disposable diaper according to claim 1 and 2, wherein,
This disposable diaper also has telescopic sheet, and this telescopic sheet is flexible along described product width direction,
Outboard end on the described product length direction of described telescopic sheet is configured at least one in the described anterior end of described disposable diaper and the described rear end of described disposable diaper,
Medial end on the described product length direction of described telescopic sheet is configured in described back sheet configuring area.
4. disposable diaper according to claim 3, wherein,
Described telescopic sheet extends to than described back sheet configuring area by the position outside described product width direction.
5. the disposable diaper according to any one of Claims 1 to 4, wherein,
The non-configuring area of described back sheet is configured at the described anterior end of described disposable diaper and the described rear end of described disposable diaper.
6. disposable diaper according to claim 5, wherein,
Length on the described product length direction of the non-configuring area of described back sheet in described rear waist area is greater than the length on the described product length direction of the non-configuring area of described back sheet in described front waist area.
7. the disposable diaper according to any one of claim 1 ~ 6, wherein,
This disposable diaper also has an offside rivel, and this offside rivel has erecting, is configured at the side, skin contact face of described absorber,
Described offside rivel separate configuration on described product width direction,
A described offside rivel has the lateral plate folded for starting point with the folding line along described product length direction and the part the be folded retractility component being each other configured in described lateral plate respectively,
Described lateral plate is configured to described rear end from the described anterior end of described disposable diaper,
The part be folded of described lateral plate does not engage in the described anterior end of described disposable diaper and the described rear end of described disposable diaper each other.
8. the disposable diaper according to any one of claim 1 ~ 7, wherein,
This disposable diaper comprises outer load, and this outer load is configured at the side, described non-skin contact face of described back sheet,
The embossing rate of described outer load is more than 5% and below 15%.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-118176 | 2013-06-04 | ||
| JP2013118176A JP6212289B2 (en) | 2013-06-04 | 2013-06-04 | Disposable diapers |
| PCT/JP2014/063680 WO2014196379A1 (en) | 2013-06-04 | 2014-05-23 | Disposable diaper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105263453A true CN105263453A (en) | 2016-01-20 |
| CN105263453B CN105263453B (en) | 2018-10-19 |
Family
ID=52008030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480032304.4A Active CN105263453B (en) | 2013-06-04 | 2014-05-23 | Disposable diaper |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6212289B2 (en) |
| CN (1) | CN105263453B (en) |
| AU (1) | AU2014276039B2 (en) |
| TW (1) | TWI619478B (en) |
| WO (1) | WO2014196379A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6382102B2 (en) * | 2014-12-26 | 2018-08-29 | ユニ・チャーム株式会社 | Absorbent articles |
| JP6382101B2 (en) * | 2014-12-26 | 2018-08-29 | ユニ・チャーム株式会社 | Method for manufacturing absorbent article |
| JP5922288B1 (en) * | 2015-08-19 | 2016-05-24 | 株式会社アルバ | Disposable wearing article and method for producing disposable wearing article |
| JP6740085B2 (en) * | 2016-10-31 | 2020-08-12 | ユニ・チャーム株式会社 | Tape diaper |
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2013
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2014
- 2014-05-23 CN CN201480032304.4A patent/CN105263453B/en active Active
- 2014-05-23 WO PCT/JP2014/063680 patent/WO2014196379A1/en active Application Filing
- 2014-05-23 AU AU2014276039A patent/AU2014276039B2/en not_active Ceased
- 2014-06-04 TW TW103119362A patent/TWI619478B/en active
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2014196379A1 (en) | 2014-12-11 |
| AU2014276039A1 (en) | 2016-01-21 |
| TWI619478B (en) | 2018-04-01 |
| CN105263453B (en) | 2018-10-19 |
| JP2014233553A (en) | 2014-12-15 |
| TW201515644A (en) | 2015-05-01 |
| AU2014276039B2 (en) | 2018-06-21 |
| JP6212289B2 (en) | 2017-10-11 |
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