CN105407848A - Disposable diaper - Google Patents
Disposable diaper Download PDFInfo
- Publication number
- CN105407848A CN105407848A CN201480042311.2A CN201480042311A CN105407848A CN 105407848 A CN105407848 A CN 105407848A CN 201480042311 A CN201480042311 A CN 201480042311A CN 105407848 A CN105407848 A CN 105407848A
- Authority
- CN
- China
- Prior art keywords
- width direction
- region
- product width
- disposable diaper
- waist area
- 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
- 239000006096 absorbing agent Substances 0.000 claims description 34
- 230000036541 health Effects 0.000 claims description 12
- 230000008602 contraction Effects 0.000 abstract description 6
- 210000002414 leg Anatomy 0.000 description 55
- 230000002745 absorbent Effects 0.000 description 15
- 239000002250 absorbent Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 15
- 239000004745 nonwoven fabric Substances 0.000 description 15
- 239000000758 substrate Substances 0.000 description 13
- 210000004177 elastic tissue Anatomy 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000004744 fabric Substances 0.000 description 8
- 239000000835 fiber Substances 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000000470 constituent Substances 0.000 description 6
- 210000001217 buttock Anatomy 0.000 description 4
- 210000003141 lower extremity Anatomy 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material 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
- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000035699 permeability 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
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 230000003187 abdominal effect Effects 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920006306 polyurethane fiber Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920000247 superabsorbent polymer Polymers 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
- A61F13/45—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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
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
The present invention provides a disposable diaper (10) comprising: a rear-side waist expansion/contraction sheet (85) having expansion/contraction properties in the product width direction and arranged in the rear waist area; and a waist holding section extending along the product width direction and holding the disposable diaper on to the body of a wearer. The disposable diaper (10) has a first area (R11) having the rear-side waist expansion/contraction sheet arranged therein and a second area (R2) not having the rear-side waist expansion/contraction sheet arranged therein and having a lower elongation rate than the first area. The elongation rate in the product width direction in a side section area (R12) in the first area is lower than the elongation rate in the product width direction in a center area (R11) of the first area. The first area and the second area are arranged over the entire product longitudinal direction, extending to the front-side end section of the waist holding section in the rear waist area and the rear-side end section of the waist holding section in the rear waist area.
Description
Technical field
The present invention relates to a kind of disposable diaper.
Background technology
In the past, be known to a kind of disposable diaper, this disposable diaper has front waist area, rear waist area and lower crotch region, and comprise and cross over lower crotch region and the absorber that extends of waist area and rear waist area and for the magic tape (for example, referring to patent documentation 1) by front waist area and the set of rear waist area forward.
Usually, magic tape extends out outside width from the width outboard end of the rear waist area of disposable diaper.When dressing the disposable diaper of patent documentation 1, waist area before the magic tape of rear waist area being pulled under the state of the in-leg lower crotch of disposable diaper being configured in wearer waist area before this magic tape is bonded to.
In addition, the elastic component that can stretch in the width direction is configured with in the waist opening portion of the disposable diaper of patent documentation 1.By the flexible waistline making the waist opening portion of disposable diaper be sealed at wearer of elastic component.
prior art document
patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2006-20665 publication
But described disposable diaper has following problem points.
In the disposable diaper of patent documentation 1, the region that self-adhesion cingulum extends in the width direction and elastic component separate configuration.Therefore, when dressing, by magic tape to outside width during tractive, elastic component is difficult to extend in the width direction linkedly, thus dresses disposable diaper under being difficult to the state after making elastic component extend.
In addition, when dressing, when by magic tape to outside width during tractive, the part (such as, the front part becoming the area side that self-adhesion cingulum extends in the width direction of elastic component) that there is only elastic component is extended and situation that other parts of elastic component are not extended.Thus, be difficult to elastic component entirety is balancedly extended, thus be difficult to utilize whole elastic component to improve the stickiness of waistline.
Summary of the invention
Therefore, the present invention makes in view of such situation, and its object is to provides a kind of elastic component of the surrounding being configured at waist opening portion entirety that can make balancedly extend and improve the disposable diaper of the stickiness of the waistline of wearer.
Will being intended to of disposable diaper of the present disclosure (disposable diaper 10), it comprises: front waist area (front waist area 20), rear waist area (rear waist area 30), lower crotch region (lower crotch region 25), it is between described front waist area and described rear waist area, product length direction (product length direction L), its from described front waist area towards described rear waist area, product width direction (product width direction W), it is orthogonal with described product length direction, 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 at the outboard end on the product width direction of described rear waist area, is bonded to described front waist area, waist stretchable sheet, it crosses over the center in the described product width direction of disposable diaper, and has retractility on described product width direction, and waistline maintaining part, it extends along product width direction in described front waist area and described rear waist area, for disposable diaper being held in the health of wearer, wherein, described waist stretchable sheet has the posterior lumbar stretchable sheet (posterior lumbar stretchable sheet 85) being configured at described rear waist area, this disposable diaper has: the 1st region (the 1st region R1), is configured with described posterior lumbar stretchable sheet in the 1st region, and the 2nd region, it is positioned at than described 1st region by the position outside product width direction, in the 2nd region, do not configure described posterior lumbar stretchable sheet, percentage elongation on the described product width direction in described 2nd region is lower than the percentage elongation on the described product width direction in described 1st region, percentage elongation on the described product width direction of the end (lateral region R12) in the described product width direction in described 1st region is lower than the percentage elongation on the described product width direction of the central authorities (middle section R11) in the described product width direction in described 1st region, the anterior end of described waistline maintaining part of described rear waist area and the rear end ground configuration of the described waistline maintaining part of described rear waist area are crossed in described 1st region and described 2nd region.
Accompanying drawing explanation
Fig. 1 is the expansion top view under the elongation state of the disposable diaper of present embodiment.
Fig. 2 is the top view under the naturalness of a part for 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 partial enlarged drawing of the expansion top view of the disposable diaper shown in Fig. 1.
Fig. 6 is the figure of the deformation state schematically showing posterior lumbar stretchable sheet.
Detailed description of the invention
Next, the embodiment of disposable diaper 10 of the present invention is described with reference to accompanying drawing.In addition, in the record of accompanying drawing below, the Reference numeral identical or similar to identical or similar part mark.But should be noted that accompanying drawing is schematic, the ratio of each size etc. are different from the ratio of each 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 may also be comprised each other at accompanying drawing.
(1) the overall schematic configuration of disposable diaper
Fig. 1 is the expansion top view under the elongation state of the disposable diaper 10 of present embodiment.Fig. 2 is the top view under the naturalness of a part (rear end side) for 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.
Elongation state shown in Fig. 1 is the state 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.On the other hand, naturalness is when during disposable diaper 10 is enclosed in packaging etc., takes out disposable diaper 10 from packaging, with this state 20 DEG C ± 2 DEG C, place 12 hours under the environment of relative humidity 60% ± 5%RH after state.In disposable diaper in its natural state, be formed with fold at the positive dough sheet 50, flank 70 etc. forming disposable diaper.
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 components such as magic tape engage 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 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.
After being positioned at of absorber 40, the position of waist area is provided with the low rigidity portion 110 as Low rigidity region, the weight per unit area of this low rigidity portion 110 is lower than the weight per unit area at other positions of absorber, or this low rigidity portion 110 does not exist absorbent core 40a.Low rigidity portion 110 is shapes that the product width direction central authorities of the end of the side, waist area rearward of length self-priming acceptor 40 on product width direction go towards side, front waist area to shorten gradually.More specifically, when overlooking disposable diaper 10, low rigidity portion 110 is wedge shape.In addition, the boundary between absorbent core 40a and low rigidity portion 110 is formed by the circular arc protruded towards the center on the W of product width direction.The ratio low rigidity portion 110 of absorber 40 is the trapezoidal shape protruded towards the end of side, waist area rearward by the part outside product width direction.
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.Outer load is configured at the surface by side, non-skin contact face of disposable diaper.Outer load is formed by such as non-woven fabrics.
Back sheet 60a is configured at anterior end 10F than disposable diaper by inside product length direction and than the rear end 10R of disposable diaper by the position inside product length direction.Back sheet 60a is configured at end, product width direction than disposable diaper by the position inside product width direction.
Side edge part 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 multiple non-woven fabrics be laminated of more than one or two.
A pair leg opening part 35 is formed at the flank 70 of disposable diaper 10.Leg opening part 35 is located at the side end 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 is configured at the outboard end on the product width direction of rear waist area, for being bonded to front waist area.Magic tape 90 extends to than flank 70 by the position outside product width direction.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, thus disposable diaper 10 is held in the health of wearer.
Target portion 95 is configured to, and is configured at the non-skin contact face in front waist area and supplies 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 scope that the waistline holding part of rear waist area 30 extends in the region of the snap portions being certainly provided with magic tape 90 along product width direction.The scope that the waistline holding part of front waist area 20 extends in the region being certainly provided with target portion 95 along product width direction.
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 than absorber 40 by the position outside product width direction, stretching along product length direction L inside product width direction.
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 a pair 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 pair auxiliary telescopic portion 77, and flexible along product length direction.Flank 70 can be made along the buttocks heaved that has of wearer by making the regions contract being provided with auxiliary telescopic portion 77 of flank 70, thus this region can be utilized to cover buttocks.
In addition, the part that leg pars contractilis 75 and auxiliary telescopic portion 77 shrink along product length direction in fact for utilizing the elastic components such as rubber band is the concept except the part except being configured with elastic component under the state not playing contractility.
Leg pars contractilis 75 by stretch along product length direction, the elastic component that to be provided with 3 in every side formed.Auxiliary telescopic portion 77 by stretch along product length direction, the elastic component that to be provided with 1 in every side formed.The elastic component of present embodiment comprises polyurethane elastomeric fiber, natural rubber.
The rear end 75R of leg pars contractilis 75 is configured at than the forward side of magic tape 90 and than magic tape by the position inside product width direction.Thus, leg pars contractilis 75 is utilized to make than the forward side of magic tape 90 and by the regions contract inside width.
The anterior end in auxiliary telescopic portion 77 is configured at the position of the anterior end 75F side rearward than leg pars contractilis 75.Therefore, 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.
Leg pars contractilis 75 can be utilized to mention the lower crotch region of disposable diaper towards the lower crotch of wearer.Further, can utilize auxiliary telescopic portion 77 that the power being mentioned lower crotch region by leg pars contractilis is passed to magic tape 90.Therefore, under the state by magic tape 90 set, not only be easy to utilize magic tape 90 to make the region of the waistline that will be held in wearer be sealed at wearer with the region being configured with leg pars contractilis 75, but also be easy to make the region between magic tape 90 and leg pars contractilis 75 be sealed at wearer.
Further, auxiliary telescopic portion can be utilized to make than leg pars contractilis by the regions contract outside product width direction, thus the part of the rear waist area of flank can be utilized suitably to cover buttocks.Therefore, it is possible to especially suppress rear side leg opening part to tilt when wearing.In addition, the contraction of leg pars contractilis can be utilized to be furthered to bodyside by leg opening part, thus the skew of leg opening part can be suppressed.
Leg pars contractilis 75 is configured between flank 70 and outer mounting 60.Or in the region being provided with the back sheet 60a be configured between absorber 40 and outer mounting 60, leg pars contractilis 75 is configured between back sheet 60a and flank 70.
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 elongation degree 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
In addition, in this manual, this percentage elongation is 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 the measuring objects such as leg pars contractilis is cut out.Now, cut with also comprising the outer load that engages with measuring objects such as leg pars contractilis.Measure the percentage elongation of the sample cut out, thus measure the percentage elongation of measuring object.
By each sample 20 DEG C ± 2 DEG C, relative humidity places 60 minutes under being the environment of 60% ± 5%RH, and measures the length of measuring object along telescopic direction.This length is set to " length under the naturalness of measuring object (leg pars contractilis etc.) ".
Then, measure length in telescopic direction of desired region under this state (i.e. naturalness) and sample has been 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 measuring object (leg pars contractilis etc.) ".
By using these measurement results and utilizing described formula to calculate, thus measure percentage elongation.
In addition, following measuring method is utilized to measure " length " in this description.
Use the sample obtained in the following way, namely, when during disposable diaper 10 is enclosed in packaging etc., take out disposable diaper 10 from packaging, with this state 20 DEG C ± 2 DEG C, place 12 hours under the environment of relative humidity 60% ± 5%RH and the sample that obtains.
Then, by use affine mensuration Co., Ltd. of Japan elasticity tape measure (tape portion: be base material with glass fibre take polrvinyl chloride as cover layer) and to make its mode along measuring object position measure the length under this state at measuring object position.In addition, for the length of elongation state, measure in length disposable diaper 10 having been extended to measuring object position when passing through till range estimation cannot observe the state of the fold produced because of elastic component from naturalness.
At this, under respective state, described measurement is carried out for 10 samples, and its meansigma methods is set to length.
In addition, a pair leg side rivel 80 extended along product length direction L is provided with in the inner side (the central side by 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.Leg side rivel 80 can adopt known structure, specifically, also can by with flank 70 phase independently sheet material formed.
Disposable diaper 10 has waist stretchable sheet, and this waist stretchable sheet is crossed over the center, product width direction of disposable diaper and have retractility on product width direction.Waist stretchable sheet has the posterior lumbar stretchable sheet 85 of the rear end being configured at disposable diaper and is configured at the front side waist portion stretchable sheet 86 of anterior end of disposable diaper.In addition, in FIG, the center, product width direction by disposable diaper is shown and the imaginary line L1 extended along product length direction.
The rear end 10R of disposable diaper has the center, product width direction of rear end 10R than the curved shape caved in inside the product length direction, lateral, product width direction of rear end 10R under the naturalness of disposable diaper.The rear end being positioned at the posterior lumbar stretchable sheet 85 of the rear end of disposable diaper also has center, product width direction in its natural state than the curved shape caved in inside product length direction, lateral, product width direction.
In addition, under the elongation state (state shown in Fig. 1) extended making disposable diaper, the anterior end 85F of posterior lumbar stretchable sheet 85 has the center, product width direction of anterior end 85F than the curved shape caved in outside the product length direction, lateral, product width direction of anterior end 85F.In addition, the curved shape of posterior lumbar stretchable sheet is not formed at the whole region of anterior end 85F, but is formed at the width central authorities as a part for anterior end.
Posterior lumbar stretchable sheet 85 is configured between a pair magic tape on product width direction.A part of the anterior end 85F of posterior lumbar stretchable sheet 85 is overlapping with absorber.The rear end 85R of posterior lumbar stretchable sheet 85 aligns with the rear end of disposable diaper.Length on the product width direction of posterior lumbar stretchable sheet 85 is longer than the length on the product width direction of absorber 40 and is longer than the length on the width of back sheet 60a.Posterior lumbar stretchable sheet extends to and to extend to than the position of back sheet 60a by the outside on product width direction by the position in the outside on product width direction than absorber 40.
Disposable diaper 10 has: the 1st region R1, in the 1st region R1, be configured with posterior lumbar stretchable sheet; And the 2nd region R2, it to be positioned at than the 1st region R1 by the position outside product width direction, in the 2nd region R2, does not configure posterior lumbar stretchable sheet.Percentage elongation on the product width direction of the 2nd region R2 is lower than the percentage elongation on the product width direction of the 1st region R1.In addition, as long as be configured to the percentage elongation on the product width direction of whole 2nd region R2 lower than the percentage elongation on the product width direction of whole 1st region R1, the percentage elongation on the product width direction of the part in the 1st region also can be identical with the percentage elongation on the product width direction of the 2nd region R2.
1st region R1 be comprise disposable diaper product width direction central authorities and extend to the constant range outside product width direction from this product width direction central authorities.2nd region R2 is the region of outboard end to the product width direction outboard end of disposable diaper on the product width direction of the 1st region R1.
The anterior end of waistline maintaining part of waist area and the rear end ground configuration of the waistline maintaining part of rear waist area after 1st region R1 and the 2nd region R2 crosses over.In FIG, add oblique line to the waistline maintaining part of rear waist area to represent.HF shown in Fig. 1 represents the anterior end of the waistline maintaining part of rear waist area, and the HR shown in Fig. 1 represents the rear end of the waistline maintaining part of rear waist area.In other words, the anterior end of posterior lumbar stretchable sheet 85 extends to the position of side more forward than the waistline maintaining part of rear waist area, and the rear end of posterior lumbar stretchable sheet extends to the position of the waistline maintaining part side rearward than rear waist area.
Percentage elongation on the product width direction of the end, product width direction of the 1st region R1 is configured to lower than the percentage elongation on the product width direction of the product width direction central authorities in the 1st region.In addition, the percentage elongation in the 1st region of present embodiment goes to reduce gradually outside product width direction from product width center, specifically, is formed with 3 subregions that percentage elongation is different.The product width direction central authorities of the 1st region R1 are set to middle section R11 and are represented in Figure 5, the end, product width direction of the 1st region R1 is set to lateral region R12 and is represented in Figure 5, the region between middle section R11 and lateral region R12 is set to zone line R13 and is represented in Figure 5.The relation of percentage elongation meets: the percentage elongation on the product width direction of the percentage elongation > lateral region R12 on the product width direction of the percentage elongation > zone line R13 on the product width direction of middle section R11.
In addition, after 1st region R1 crosses over, the state of the anterior end of waistline maintaining part of waist area and the rear end ground configuration of the waistline maintaining part of rear waist area refers to, as long as the 1st region R1 configures with crossing over the rear anterior end of waistline maintaining part of waist area and the rear end of the waistline maintaining part of rear waist area at least partially, the 1st region R1 can configure in whole region, product width direction with crossing over the rear end of the anterior end of the waistline maintaining part of rear waist area and the waistline maintaining part of rear waist area.This state is the concept also comprising following structure, that is, a part (center, product width direction) for the middle section of the 1st region R1 does not have to cross over the anterior end of waistline maintaining part of rear waist area and the rear end ground configuration of the waistline maintaining part of rear waist area.
Percentage elongation on the product width direction of middle section R11 can be set to 1.4 times ~ 1.8 times.Percentage elongation on the product width direction of lateral region R12 is set lower than the percentage elongation on the product width direction of middle section R11,1.0 times ~ 1.1 times can be set it to.Percentage elongation on the product width direction of zone line R13 is set lower than the percentage elongation on the product width direction of middle section R11 and higher than the percentage elongation of lateral region R12,1.2 times ~ 1.3 times can be set to.Percentage elongation on the product width direction of the 2nd region R2 is 1.0 times, and the 2nd region is the region of not extending in fact.In addition, the percentage elongation on the product width direction of lateral region R12 can be 1.0 times, lateral region can same with the 2nd region be the region of not extending in fact.
In addition, the percentage elongation of middle section R11, lateral region R12 and zone line R13 can be measured in such a way.First, when disposable diaper 10 is enclosed in packaging etc., from packaging, disposable diaper 10 is taken out.Then, cut out the configuring area of waist stretchable sheet, and cut out the sample of measuring object.By sample these 20 DEG C ± 2 DEG C, relative humidity be the environment of 60% ± 5%RH under place 24 hours, become naturalness.In its natural state, centre position between the end (anterior end) by absorbent core side and the end (rear end) by side, waist opening portion of waist stretchable sheet, namely on the product length direction of waist stretchable sheet, along product width Directional discontinuity ground gauge point (mark).For this point, with the center on the product width direction of waist stretchable sheet for benchmark, from this benchmark about product width direction with 10mm spaced markings point (mark), until the end, product width direction of waist stretchable sheet.Distance between adjacent point is measured.Using the length of this distance under naturalness.Such as, using the distance between the adjacent point being configured at middle section R11 as the length under the naturalness of middle section R11.Then, make fabric elongation and become elongation state.Under elongation state, the distance between adjacent point is measured.Using the length of distance under elongation state between this point.Described formula can be utilized to calculate the percentage elongation at each position.
Middle section R11 is the region that the anterior end of posterior lumbar stretchable sheet under elongation state becomes curved shape.Lateral region R12 is the region that the anterior end of posterior lumbar stretchable sheet under elongation state does not become curved shape.Length D2 on the product length direction of lateral region R12 is longer than the length D1 on the product length direction of middle section R11.
The anterior end 85F of posterior lumbar stretchable sheet be positioned at center, product width direction be partly arranged at waistline maintaining part.The part being arranged in center, product width direction of the anterior end of posterior lumbar stretchable sheet is positioned at the anterior end position rearward of the waistline maintaining part than rear waist area.Therefore, waistline maintaining part has the part overlapping with posterior lumbar stretchable sheet and not overlapping with posterior lumbar stretchable sheet part.In addition, the part being positioned at width outboard end of the anterior end of posterior lumbar stretchable sheet extends to the position of side more forward than waistline maintaining part.
The anterior end 10F of disposable diaper has the center, product width direction of anterior end 10F than the curved shape caved in inside the product length direction, lateral, product width direction of anterior end 10F under the naturalness of disposable diaper.The anterior end 86F being positioned at the front side waist portion stretchable sheet 86 of the anterior end of disposable diaper also has the center, product width direction of anterior end 86F in its natural state than the curved shape caved in inside the product length direction, lateral, product width direction of anterior end 86F.
In addition, under the elongation state (state shown in Fig. 1) extended making disposable diaper, the rear end 86R of front side waist portion stretchable sheet 86 has the center, product width direction of rear end 86R than the curved shape caved in outside the product length direction, lateral, product width direction of rear end 86R.In addition, the curved shape of front side waist portion stretchable sheet is not formed at the whole region of rear end 86R, but is formed at the width central authorities as a part of rear end 86R.
The rear end 86R of front side waist portion stretchable sheet 86 is adjacent with target portion 95 with absorber 40 on product length direction.The rear end 86R of front side waist portion stretchable sheet 86 is positioned at than absorber 40 in the outer part and than target portion 95 position in the outer part on product length direction.
The anterior end 86F of front side waist portion stretchable sheet 86 aligns with the anterior end of disposable diaper.Length on the product width direction of front side waist portion stretchable sheet 86 is longer than the length on the product width direction of absorber 40 and is longer than the length on the width of back sheet 60a.Front side waist portion stretchable sheet 86 extends to and to extend to than the position of back sheet 60a by the outside on product width direction by the position in the outside on product width direction than absorber 40.
In the present embodiment, as waist stretchable sheet, preferably use when along a direction elongation of sheet time, sheet the sheet of the narrowed width (carrying out so-called contracting width) on 2nd direction orthogonal with prolonging direction.
As waist stretchable sheet, can use by have elasticity and extensibility elastic fiber and do not have sheet that elasticity but the mixture with these two kinds of fiber mixing of non-elastic fiber of extensibility make, particularly grammes per square metre can be used to be 20g/m
2~ 80g/m
2, be more preferably 40g/m
2~ 75g/m
2, more preferably 50g/m
2~ 70g/m
2spun-bonded non-woven fabrics sheet, in this spun-bonded non-woven fabrics sheet, elastic fiber is the long filament of the polyurethane fiber of the fiber number with 2dtex ~ 6dtex, non-elastic fiber is at least one long filament in the long filament of the polyolefine fiber of the fiber number with 2dtex ~ 6dtex, polyester fiber and this three of Fypro, by elastic fiber and non-elastic fiber the Mixing ratio by weight between elastic fiber with non-elastic fiber be 40:60 ~ 60:40 scope in coordinate.Utilize gear that a part for the non-elastic fibrous layer of the non-woven fabrics as the fiber mixed by non-elastic fiber and elastic fiber is ruptured, thus make this non-woven fabrics show retractility.As other waist stretchable sheets, if it can carry out the sheet of contracting width, then can become in this structure relatively easily, carry out contracting width after shape.In addition, waist stretchable sheet is not limited to non-woven fabric plate, also can be formed by diaphragm.In addition, also can use and prepare telescopic sheet in advance, then with the sheet making the mode of the change width on the length direction of product (cutting to make its mode protruded towards inner side) carry out predeformation to this telescopic sheet.
The percentage elongation of posterior lumbar stretchable sheet 85 is preferably 1.4 times ~ 1.8 times.In the present embodiment, the percentage elongation of posterior lumbar stretchable sheet 85 is set as 1.5 times ~ 1.6 times.In addition, percentage elongation refers to the elongation degree of posterior lumbar stretchable sheet, specifies in the following way.
Percentage elongation=(length under the elongation state of posterior lumbar stretchable sheet) ÷ (length under the naturalness of posterior lumbar stretchable sheet) of posterior lumbar stretchable sheet
The percentage elongation of front side waist portion stretchable sheet 86 is preferably 1.3 times ~ 1.7 times.In the present embodiment, the percentage elongation of front side waist portion stretchable sheet 86 is set as 1.4 times ~ 1.6 times.In addition, percentage elongation refers to the elongation degree of front side waist portion stretchable sheet, specifies in the following way.
Percentage elongation=(length under the elongation state of front side waist portion stretchable sheet) ÷ (length under the naturalness of front side waist portion stretchable sheet) of front side waist portion stretchable sheet
By arranging the waist stretchable sheet of such plate shape, thus the region (near waist opening portion) making to be configured with waist stretchable sheet with face along health.Therefore, it is possible to preferably cover the health of wearer.On the other hand, in the structure of elastic component arranging multiple wire, the elastic-member portions of wire along health, but is strictly said, the part between the elastic component of wire is not contacted with health.Therefore, the elastic-member portions of wire easily produces skew etc. with line along health, thus can not cover the health of wearer fully.In addition, because waist stretchable sheet itself has elasticity, therefore the flexibility of waist stretchable sheet is also excellent, can give buffering sense to section.Further, under the contracted state of waist stretchable sheet, the part being configured with waist stretchable sheet easily becomes fluffy state, thus becomes state also excellent in feel.
In the present embodiment, waist stretchable sheet 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, waist stretchable sheet also can be configured between core covering 40b and back sheet 60a or between core covering 40b and outer load 60.The position of waist stretchable sheet is not particularly limited.In addition, in the region not configuring absorber, waist stretchable sheet also can be configured between flank 70 and back sheet 60a or between flank 70 and outer load 60.
Posterior lumbar stretchable sheet 85 is with configuring mode overlapping with a part for the low rigidity portion 110 of absorber during disposable diaper planar development.In addition, in the present embodiment, posterior lumbar stretchable sheet 85 configures in the mode overlapping with a part for low rigidity portion 110, but also can be, whole posterior lumbar stretchable sheet 85 configures in the mode overlapping with low rigidity portion 110.
By forming such low rigidity portion 110, do not hinder the flexible of posterior lumbar stretchable sheet 85, even if posterior lumbar stretchable sheet 85 shrinks, because low rigidity portion 110 narrows, than low rigidity portion 110 by both sides, product width direction absorber between narrower intervals, therefore absorber 40 be also difficult to expect beyond shape protuberance.In addition, consider and prevent excremental leakage, preferably, the width of low rigidity portion 110 is less than the width of posterior lumbar stretchable sheet 85.
In addition, the waist stretchable sheet of present embodiment is configured to flexible along product width direction, but waist stretchable sheet also can be configured to stretch along product width direction and product length direction.
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 multiple clamping hooked as fastened component (not shown) in this hook tabs 92.Hook tabs 92 is the regions being provided with fastened component, and the waistline maintaining part in described rear waist area is the region extended along 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 discontinuously 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 multiple overlaps of more than or two.As substrate sheets 91, the non-woven fabrics utilizing the manufacture method manufacture such as spunbond (SB) or spunbond-melt blown-spunbond (SMS) can be used.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.
Magic tape comprises: base portion 93, and it is overlapping with outer load; And extension 94, it extends to than outer load by the position outside product width direction.Base portion 93 is under the state expanded by magic tape in substrate sheets 91, overlapping with outer load parts.Extension 94 is parts in substrate sheets 91, not overlapping with outer load.Under the elongation state of the disposable diaper shown in Fig. 1, on product length direction, align with the center, product length direction of base portion in the center, product length direction of extension.But, under the naturalness of disposable diaper, bending along with posterior lumbar stretchable sheet 85, the position of magic tape can change, thus makes the product length direction of extension be centrally located at center, product length direction than base portion by the position outside product length direction.
In addition, in the present invention, the state of component overlap is following concept, that is, not only comprise the state that component is directly overlapping each other, but also comprises the state (state that the ground that is clipped in the middle by other components is overlapping) of component ground connection overlap to each other.
Target portion 95 is located at the side by non-skin contact side of the outer load 60 of front waist area.Target portion 95 is configured to the clamping hooked hook for magic tape, waves function as the environment-development comprised in the locking system of 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, as target portion 95, fluffy, by preventing nonwoven surface from fluffing a part of embossing of non-woven fabrics non-woven fabrics also can be used.
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 side by non-skin contact side of back sheet 60a or outer load 60, or the sheet of pattern is configured in the non-skin contact side of back sheet 60a or outer load 60, thus is set to target portion.
Then, the wearing state of the disposable diaper so formed is described.When dressing disposable diaper, dress auxiliary by the magic tape of rear waist area side, waist area tractive forward.Dress auxiliary, under the state of front waist area of being furthered to by magic tape, magic tape is bonded to target portion.
When dressing, by magic tape is pulled to front waist area, thus by the rear end of disposable diaper tractive in the width direction.Fig. 6 be represent by magic tape by the rear waist area of disposable diaper in the width direction tractive time the figure of deformation form of posterior lumbar stretchable sheet.(a) of Fig. 6 represents the state before being out of shape, (b) of Fig. 6 represents by magic tape from (a) state of Fig. 6 state to tractive outside product width direction, and (c) of Fig. 6 represents the state after further tractive magic tape.
Under state before the distortion shown in (a) of Fig. 6, the rear end of disposable diaper is that the product width direction central authorities of rear end are than the curved shape caved in inside the product length direction, lateral, product width direction of rear end.In addition, under state before being deformed, the anterior end of posterior lumbar stretchable sheet is that the product width direction central authorities of anterior end are than the curved shape caved in outside the product length direction, lateral, product width direction of anterior end.
When by magic tape from distortion before state outside width a little tractive time, become the state shown in (b) of Fig. 6.By magic tape is pulled to front waist area, thus by the rear end of disposable diaper tractive in the width direction.In this condition, the rear end of disposable diaper is also for the product width direction central authorities of rear end are than the curved shape caved in inside the product length direction, lateral, product width direction of rear end.In addition, the anterior end of posterior lumbar stretchable sheet is that the product width direction central authorities of anterior end are than the curved shape caved in outside the product length direction, lateral, product width direction of anterior end.
When by magic tape from the state shown in (b) of Fig. 6 outside width a little tractive time, become the state shown in (c) of Fig. 6.Rear end and the product width direction of disposable diaper are almost parallel.The anterior end of posterior lumbar stretchable sheet is that the product width direction central authorities of anterior end are than the curved shape caved in outside the product length direction, lateral, product width direction of anterior end.
Dress disposable diaper time, when dress auxiliary by magic tape in the width direction tractive time, the power of going outside width can be passed to the 2nd region via magic tape, and is passed to the 1st region via the 2nd region.So, make to take up from the thread gluing of rear waist area the region extended in the width direction and extend on product width direction.
Now, because the 1st region R1 configures with crossing over the rear anterior end of waistline maintaining part of waist area and the rear end of the waistline maintaining part of rear waist area, therefore by magic tape to outside width during tractive, posterior lumbar stretchable sheet is easy to extend in the width direction linkedly.Therefore, it is possible to dress disposable diaper under the state making posterior lumbar stretchable sheet extend.
In addition, percentage elongation 2nd region lower than the percentage elongation in the 1st region is configured with between region and magic tape the 1st.Therefore, it is possible to will the power of magic tape tractive in the width direction be utilized to be passed to the 1st region via the 2nd region in the mode in the whole region, product length direction throughout waistline maintaining part.Such as, when not being configured with the region of the 2nd region or the part of the 2nd area configurations on the product length direction of waistline maintaining part, power can not be transmitted outside width in the mode in the whole region, product length direction throughout waistline maintaining part.Therefore, be only that a posterior lumbar stretchable sheet part is extended sometimes, other parts of posterior lumbar stretchable sheet are not extended.But, by the rear end of the waistline maintaining part of the anterior end and rear waist area of crossing over the waistline maintaining part of rear waist area, the 2nd region R2 is set, posterior lumbar stretchable sheet entirety can be made balancedly to extend, thus whole waist stretchable sheet can be utilized to improve the stickiness of waistline.
(2) manufacture method of disposable diaper
Then, an example of the manufacture method of the disposable diaper of present embodiment is described.In addition, unaccounted method 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.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 the manufacture method of disposable diaper, be fabricated to the continuum of disposable diaper continuous print state on product length direction, by the size that this continuum is cut into a product along product width direction W, manufacture each disposable diaper thus.
In constituent part formation process, form the constituent part forming disposable diaper.Specifically, such as, stacked absorbing material and molding absorber 40.
In constituent part mounting operation, form back sheet, continuous print to knit on sheet mounting form waist stretchable sheet, positive dough sheet, continuous print knit sheet etc. other knit the constituent part that sheet, absorber, leg pars contractilis 75, auxiliary telescopic portion 77 etc. form disposable diapers 10.
Now, waist stretchable sheet is by state integrated for the posterior lumbar stretchable sheet 85 of the front side waist portion stretchable sheet 86 of arbitrary disposable diaper and the disposable diaper adjacent with this arbitrary disposable diaper.Utilize the both ends (becoming the part of product width direction outboard end under the state being configured as disposable diaper) attracting parts etc. to keep this telescopic sheet, make telescopic sheet along the product width direction elongation of disposable diaper and this telescopic sheet is pasted onto continuous print to knit on sheet.Due under the state that is maintained at the both ends of this telescopic sheet, telescopic sheet is extended, therefore the both ends of telescopic sheet there is no elongation.Percentage elongation on the product width direction at the both ends of telescopic sheet is lower than the percentage elongation on the product width direction in the region between these both ends of telescopic sheet.The both ends of telescopic sheet are the regions corresponding with lateral region R12.
In addition, the telescopic sheet extended along product width direction is along product length direction contracting width.Particularly, the product width direction central authorities contracting width of telescopic sheet.Therefore, for the telescopic sheet under elongation state, the length on the product length direction being shorter in length than end, product width direction on the product length direction of its product width direction central authorities.State with contracting width like this paste after telescopic sheet become as shown in Figure 1 the end be equivalent on the product length direction of telescopic sheet, the width central authorities of the rear end of front side waist portion stretchable sheet and both anterior end of posterior lumbar stretchable sheet are than the curved shape caved in outside width.
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.
Continuum is cut by by each product, thus be located at the waist stretchable sheet of disposable diaper, the elongation state of leg pars contractilis is become naturalness by removing.After releasing elongation state, the waist stretchable sheet under the state of carrying out contracting width when extending is out of shape in the mode of the state before returning to contracting width.Therefore, although the anterior end of the rear end of posterior lumbar stretchable sheet and front side waist portion stretchable sheet is linearity under elongation state, case of bending is deformed in its natural state.
In addition, when continuum is become naturalness by cutting by each product, compared with the rear end of front side waist portion stretchable sheet, the anterior end of front side waist portion stretchable sheet is shunk, compared with the anterior end of posterior lumbar stretchable sheet, the rear end of posterior lumbar stretchable sheet is shunk.The anterior end of front side waist portion stretchable sheet is than the rear end of front side waist portion stretchable sheet away from absorbent core 40a, thus the anterior end of front side waist portion stretchable sheet is not shunk more by the impact of the rigidity of absorbent core 40a.The rear end of posterior lumbar stretchable sheet is than the anterior end of posterior lumbar stretchable sheet away from absorbent core 40a, thus the rear end of posterior lumbar stretchable sheet is not shunk more by the impact of the rigidity of absorbent core 40a.
Compared with the rear end of front side waist portion stretchable sheet, the anterior end of front side waist portion stretchable sheet is shunk, thus the anterior end of disposable diaper becomes its center, product width direction than the curved shape caved in inside the product length direction, lateral, product width direction of the anterior end of disposable diaper.Similarly, compared with the anterior end of posterior lumbar stretchable sheet, the rear end of posterior lumbar stretchable sheet is shunk, thus the rear end of disposable diaper becomes its center, product width direction than the curved shape caved in inside the product length direction, lateral, product width direction of the rear end of disposable diaper.
(3) action effect
Because the 1st region and the 2nd region configure with crossing over the rear anterior end of waistline maintaining part of waist area and the rear end of the waistline maintaining part of rear waist area, therefore, it is possible to power transmitted outside width in the mode in the whole region, product length direction throughout waistline maintaining part, thus the posterior lumbar stretchable sheet entirety overlapping with this waistline maintaining part can be made balancedly to extend.Therefore, it is possible to utilize whole posterior lumbar stretchable sheet to improve the stickiness of the waistline of wearer.
Percentage elongation on the product width direction of lateral region is lower than the percentage elongation on the product width direction of middle section, and the percentage elongation in the 1st region goes to reduce step by step outside product width direction from product width central authorities.Therefore, the percentage elongation of rear waist area reduces towards the 2nd region be positioned at outside width step by step from width center.The percentage elongation of the lateral region close to magic tape in the 1st region is lower.Via magic tape to the power outside width from the 2nd region to lateral region transmission.When being used for lateral region towards the masterpiece outside product width direction, power along the extension of product width direction, and can be passed to percentage elongation and higher than the middle section of the percentage elongation of lateral region, this middle section be extended by lateral region itself.By transmitting force step by step like this, the 1st regional integration can be made balancedly to extend.
Middle section is passed to the power of tractive outside width via the 2nd region and lateral region by magic tape.Now, if the product length direction of lateral region is shorter in length than the product length direction length of middle section, then power is only passed to the part on the product length direction of middle section, thus there is the situation only making the part on the product length direction of middle section extend along product width direction.But, product length direction length due to lateral region is longer than the product length direction length of middle section, therefore, it is possible to the power from the 2nd region to be passed to the whole region, product length direction of middle section, thus be easy to posterior lumbar stretchable sheet entirety is balancedly extended.
Posterior lumbar stretchable sheet is engaged in outer load at middle section, is not engaged in outer load in lateral region.Because posterior lumbar stretchable sheet is not engaged in outer load in lateral region, therefore the percentage elongation being arranged in the part of lateral region of posterior lumbar stretchable sheet is lower than the percentage elongation being positioned at the part of middle section of posterior lumbar stretchable sheet.
The 2nd region is being configured with by the position inside product width direction than the medial end on the product width direction of base portion 93.That is, the 2nd region R2 crosses base portion 93 ground from the product width direction outboard end of disposable diaper and extends inside width.The waist wing etc. can be passed to along the power of product width direction tractive via the base portion of magic tape by via magic tape.When such as base portion 93 and the 1st region are overlapping or adjacent inside the product width direction of the 1st region and base portion time, easily exert all one's strength acts on the 1st region in the scope in the whole region, product length direction of this base portion 93.Therefore, when the length in the 1st region is longer than the length on the product length direction of base portion, easily only make the part in the 1st region extend, and the 1st regional integration is difficult to extend.But, owing to being configured with the 2nd region outside the product width direction of base portion, therefore, it is possible to the power from base portion is passed to the 1st region via the 2nd region that percentage elongation is lower, thus can in the scope extended along product length direction further than base portion, the 1st region be extended.
The rear end of disposable diaper is configured to because being configured with posterior lumbar stretchable sheet be easy to flexible along product width direction.Further, because the rear end of disposable diaper is curved shape in its natural state, therefore, it is possible to be easier to make the rear end of disposable diaper to shrink.Under the state that disposable diaper is worn on wearer, the posterior lumbar stretchable sheet being positioned at rear end can be utilized to be mentioned front waist area and to tractive outside width.
Therefore, the waistline maintaining part being easy to Billy is formed with magic tape is closely sealed along the health of wearer by the region of waist end side, can prevent this position curling to the non-wearer side of disposable diaper (positive dough sheet is curling towards the coat wearing side of disposable diaper).
The anterior end 85F of posterior lumbar stretchable sheet has center, product width direction than the curved shape caved in outside product length direction, lateral, product width direction under elongation state.Under the contraction of posterior lumbar stretchable sheet 85, disposable diaper itself can be made to be deformed into the shape had as lower curve, and this curve matches to the part in the scope of dorsal part section with the position with curve on the top by waist side of the buttocks from wearer.Therefore, it is possible to stably dress disposable diaper in the mode of the mating shapes of the health of the wearing position and wearer that make dorsal part, thus not easily produce disposable diaper on move or move down.Its result, the waistline maintaining part being easy to Billy is formed with magic tape is closely sealed along the health of wearer by the region of waist end side, can prevent this position curling to the non-wearer side of disposable diaper (positive dough sheet is curling towards the coat wearing side of disposable diaper).
(4) other embodiments
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.
In variation, disposable diaper also can not have front side waist portion stretchable sheet.
In variation, also can be that the percentage elongation in the 1st region is even in whole 1st region.
In variation, also can not form Low rigidity region at absorber 40.
In variation, the length on the product length direction of lateral region both can be identical with the length on the product length direction of middle section, also can be less than the length on the product length direction of middle section.
In variation, posterior lumbar stretchable sheet also can be engaged in outer load in lateral region.
In variation, back side film both can extend to the rear end of disposable diaper, also can extend to the anterior end of disposable diaper, can also extend to the end, product width direction of disposable diaper.
In variation, both can be that base portion 93 and the 1st region are overlapping, also can be the 1st region and base portion product width direction inside adjacent.
In variation, the rear end of the disposable diaper under naturalness also can not have center, product width direction than the curved shape caved in inside product length direction, lateral, product width direction.
In variation, the anterior end of the front side waist portion stretchable sheet under elongation state also can have center, product width direction than the curved shape caved in outside product length direction, lateral, product width direction.
As mentioned above, 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 described explanation reasonable generalization.
In addition, by the full content of No. 2013-156037th, Japan's patent application (application on July 26th, 2013) by referring to enrolling present specification.
utilizability in industry
Can provide a kind of can make the waist stretchable sheet entirety as the elastic component of the surrounding being configured at waist opening portion balancedly extend and improve the disposable diaper of the stickiness of the waistline of wearer.
description of reference numerals
10, disposable diaper; 20, front waist area; 25, lower crotch region; 30, rear waist area; 35, leg opening part; 40, absorber; 40a, absorbent core; 40b, core covering; 50, positive dough sheet; 60, outer load; 60a, back sheet; 70, flank; 75, leg pars contractilis; 75F, anterior end; 75R, rear end; 77, auxiliary telescopic portion; 77F, anterior end; 77R, rear end; 80, leg side rivel; 81, elastic component; 85, posterior lumbar stretchable sheet; 85F, anterior end; 85R, rear end; 86, front side waist portion stretchable sheet; 86F, anterior end; 86R, rear end; 90, magic tape; 91, substrate sheets; 92, hook tabs; 93, base portion; 94, extension; 95, target portion; 110, low rigidity portion; L, product length direction; W, product width direction.
Claims (6)
1. a disposable diaper, it comprises: front waist area; Rear waist area; Lower crotch region, it is between described front waist area and described rear waist area; Product length direction, its from described front waist area towards described rear waist area; Product width direction, it is orthogonal with described product length direction; 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 the product width direction of described rear waist area, is bonded to described front waist area; Waist stretchable sheet, it crosses over the center in the described product width direction of disposable diaper, and has retractility on described product width direction; And waistline maintaining part, it extends along product width direction in described front waist area and described rear waist area, for disposable diaper being held in the health of wearer, wherein,
Described waist stretchable sheet has the posterior lumbar stretchable sheet being configured at described rear waist area,
This disposable diaper has: the 1st region, in the 1st region, be configured with described posterior lumbar stretchable sheet; And the 2nd region, it to be positioned at than described 1st region by the position outside product width direction, in the 2nd region, does not configure described posterior lumbar stretchable sheet,
Percentage elongation on the described product width direction in described 2nd region lower than the percentage elongation on the described product width direction in described 1st region,
Percentage elongation on the described product width direction of the end in the described product width direction in described 1st region lower than the percentage elongation on the described product width direction of the central authorities in the described product width direction in described 1st region,
The anterior end of described waistline maintaining part of described rear waist area and the rear end ground configuration of the described waistline maintaining part of described rear waist area are crossed in described 1st region and described 2nd region.
2. disposable diaper according to claim 1, wherein,
Length on the product length direction of the end in the described product width direction in described 1st region is longer than the length on the product length direction of the central authorities in the described product width direction in described 1st region.
3. disposable diaper according to claim 1 and 2, wherein,
This disposable diaper at least in the rear waist area has outer load, and this outer load is configured in the side, non-skin contact face of described absorber,
Described posterior lumbar stretchable sheet is engaged in described outer load in the central authorities in the described product width direction in described 1st region, and is not engaged in described outer load in the end in the described product width direction in described 1st region.
4. disposable diaper according to any one of claim 1 to 3, wherein,
This disposable diaper at least in the rear waist area has outer load, and this outer load is configured in the side, non-skin contact face of described absorber,
Described magic tape comprises: base portion, and it is overlapping with described outer load; And extension, it extends to than the position of described outer load by the outside in described product width direction,
Described 2nd region is configured with leaning on the position of the inner side in described product width direction than the medial end on the described product width direction of described base portion.
5. disposable diaper according to any one of claim 1 to 4, wherein,
The described rear end of described disposable diaper has the curved shape caved in than the inner side in product length direction described in lateral, product width direction at center, product width direction under the naturalness of described disposable diaper.
6. disposable diaper according to any one of claim 1 to 5, wherein,
The described anterior end of described posterior lumbar stretchable sheet has the curved shape caved in than the outside in product length direction described in lateral, product width direction at center, product width direction under the elongation state making described disposable diaper extend.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-156037 | 2013-07-26 | ||
| JP2013156037A JP5946801B2 (en) | 2013-07-26 | 2013-07-26 | Disposable diapers |
| PCT/JP2014/068594 WO2015012130A1 (en) | 2013-07-26 | 2014-07-11 | Disposable diaper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105407848A true CN105407848A (en) | 2016-03-16 |
| CN105407848B CN105407848B (en) | 2018-10-02 |
Family
ID=52393176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480042311.2A Active CN105407848B (en) | 2013-07-26 | 2014-07-11 | Disposable diaper |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5946801B2 (en) |
| KR (1) | KR102315292B1 (en) |
| CN (1) | CN105407848B (en) |
| WO (1) | WO2015012130A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5956003B1 (en) * | 2015-02-27 | 2016-07-20 | ユニ・チャーム株式会社 | Disposable diapers |
| JP6049933B1 (en) * | 2016-04-08 | 2016-12-21 | ユニ・チャーム株式会社 | Method for manufacturing absorbent article |
| KR20210009989A (en) | 2019-07-18 | 2021-01-27 | 엄원섭 | Manufacturing method of sanitary products using plant resources |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101460124A (en) * | 2006-06-13 | 2009-06-17 | 宝洁公司 | Disposable pull-on garment |
| CN101541281A (en) * | 2006-12-28 | 2009-09-23 | 大王制纸株式会社 | Disposable diaper |
| US20100076394A1 (en) * | 2006-11-27 | 2010-03-25 | Kao Corporation | Absorbent article |
| CN102014831A (en) * | 2008-04-30 | 2011-04-13 | 大王制纸株式会社 | Disposable absorptive article |
| WO2012090931A1 (en) * | 2010-12-27 | 2012-07-05 | 花王株式会社 | Underwear-type absorbent article |
| JP5243655B1 (en) * | 2012-11-27 | 2013-07-24 | ユニ・チャーム株式会社 | Disposable diapers |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5196000A (en) | 1991-06-13 | 1993-03-23 | The Proctor & Gamble Company | Absorbent article with dynamic elastic waist feature comprising an expansive tummy panel |
| JP2001224627A (en) * | 2000-02-18 | 2001-08-21 | Toa Kiko Kk | Waist gather forming apparatus for paper diaper production equipment |
| JP3805236B2 (en) | 2001-01-29 | 2006-08-02 | 花王株式会社 | Disposable diapers |
| US7855316B2 (en) | 2002-12-20 | 2010-12-21 | Kimberly-Clark Worldwide, Inc. | Preferentially stretchable laminates with perforated layers |
| JP4417794B2 (en) | 2004-07-06 | 2010-02-17 | 大王製紙株式会社 | Tape-type paper diapers |
| JP4912902B2 (en) * | 2007-01-31 | 2012-04-11 | 大王製紙株式会社 | Disposable paper diapers |
| JP4996507B2 (en) * | 2008-03-04 | 2012-08-08 | 王子ネピア株式会社 | Absorbent articles |
| JP5243638B1 (en) * | 2012-03-30 | 2013-07-24 | ユニ・チャーム株式会社 | Disposable diapers |
-
2013
- 2013-07-26 JP JP2013156037A patent/JP5946801B2/en active Active
-
2014
- 2014-07-11 WO PCT/JP2014/068594 patent/WO2015012130A1/en active Application Filing
- 2014-07-11 CN CN201480042311.2A patent/CN105407848B/en active Active
- 2014-07-11 KR KR1020167001153A patent/KR102315292B1/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101460124A (en) * | 2006-06-13 | 2009-06-17 | 宝洁公司 | Disposable pull-on garment |
| US20100076394A1 (en) * | 2006-11-27 | 2010-03-25 | Kao Corporation | Absorbent article |
| CN101541281A (en) * | 2006-12-28 | 2009-09-23 | 大王制纸株式会社 | Disposable diaper |
| CN102014831A (en) * | 2008-04-30 | 2011-04-13 | 大王制纸株式会社 | Disposable absorptive article |
| WO2012090931A1 (en) * | 2010-12-27 | 2012-07-05 | 花王株式会社 | Underwear-type absorbent article |
| JP5243655B1 (en) * | 2012-11-27 | 2013-07-24 | ユニ・チャーム株式会社 | Disposable diapers |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102315292B1 (en) | 2021-10-20 |
| KR20160037886A (en) | 2016-04-06 |
| JP5946801B2 (en) | 2016-07-06 |
| WO2015012130A1 (en) | 2015-01-29 |
| CN105407848B (en) | 2018-10-02 |
| JP2015024050A (en) | 2015-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104822348B (en) | Disposable diaper | |
| CN104105464B (en) | Disposable wearing article | |
| JP6181407B2 (en) | Disposable diapers | |
| CN104812344B (en) | Disposable diaper | |
| JP5243642B1 (en) | Disposable diapers | |
| JP2008132024A (en) | Absorbent articles | |
| CN104768511A (en) | Disposable diaper | |
| WO2013147054A1 (en) | Disposable diaper | |
| TW201402084A (en) | Disposable diaper | |
| CN104812348A (en) | Disposable diaper | |
| CN105407848A (en) | Disposable diaper | |
| JP2008284058A (en) | Method for producing disposable wearing article | |
| JP2008173285A (en) | Pants-type absorbent article | |
| CN105263453B (en) | Disposable diaper | |
| TW201343150A (en) | Disposable diaper | |
| CN105407847B (en) | Disposable diaper | |
| CN104780880A (en) | Disposable diaper | |
| CN104736117A (en) | Disposable diaper | |
| JP4528753B2 (en) | Disposable diapers | |
| CN104093385B (en) | Disposable diaper | |
| CN105407849A (en) | Disposable diaper | |
| KR102469156B1 (en) | disposable diapers | |
| WO2013180260A1 (en) | Disposable diaper | |
| CN106232071A (en) | Disposable diaper | |
| KR20150067087A (en) | Disposable diaper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |