CN104254308B - The manufacture method of disposable diaper and disposable diaper - Google Patents

The manufacture method of disposable diaper and disposable diaper Download PDF

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Publication number
CN104254308B
CN104254308B CN201380022333.8A CN201380022333A CN104254308B CN 104254308 B CN104254308 B CN 104254308B CN 201380022333 A CN201380022333 A CN 201380022333A CN 104254308 B CN104254308 B CN 104254308B
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CN
China
Prior art keywords
leg
mentioned
telescopic material
leg telescopic
pars contractilis
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Active
Application number
CN201380022333.8A
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Chinese (zh)
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CN104254308A (en
Inventor
坂口智
石川慎
石川慎一
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Unicharm Corp
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Unicharm Corp
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49017—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means being located at the crotch region
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region

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

Abstract

Disposable diaper (10) possesses along being located at the leg pars contractilis leaning on the leg-openings portion of the position outside product width direction to configure and can stretch along product length direction than absorber. Leg pars contractilis possesses the 1st leg telescopic material (76) of banding and the 2nd leg telescopic material (77) of wire of length being arranged on the product width direction being shorter in length than the 1st leg telescopic material in the 1st telescopic material configuring area being configured with the 1st leg telescopic material and on product width direction. The position of skin bearing surface side is being leaned on to be provided with the flank (70) of non-telescoping than the 1st leg telescopic material and/or the 2nd leg telescopic material. Percentage elongation on the product length direction of the 2nd leg telescopic material is higher than the percentage elongation on the product length direction of the 1st leg telescopic material.

Description

The manufacture method of disposable diaper and disposable diaper
Technical field
The present invention relates to the manufacture method of disposable diaper and disposable diaper.
Background technology
In the past, it is known to a kind of such disposable diaper: there is front waist area, rear waist area and lower crotch region, it is formed with pair of leg and encloses peristome, and possess the absorber crossing over lower crotch region and waist area and the extension of rear waist area forward, be configured with the leg pars contractilis flexible along product length direction along leg-openings portion.
The leg pars contractilis of the disposable diaper of patent documentation 1 utilizes the tablet constituent material that the compound sheet things etc. such as the material that can be stretched by rubber, elastomeric material etc., Flexible film, flexible non-woven fabrics are constituted to constitute. This tablet constituent material has specific length on product width direction, it is possible to spreads all over and integrally stretches. Thus, the leg-openings portion of disposable diaper encloses along the lower limb of wearer with planar configuration.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Application Publication 2004-505725 publication (the 4th figure, the 7th figure, paragraph 0012, paragraph 0017)
Summary of the invention
The problem that invention to solve
But, above-mentioned disposable diaper exists problem below point.
Leg pars contractilis is by constituting at the sheeting of non-telescoping (constituting the sheeting of surficial sheets, back-sheet) the upper tablet constituent material pasting retractility, due to the contraction of tablet constituent material, the sheeting of non-telescoping also shrinks. Thus, on the sheeting of non-telescoping, sometimes form fold, produce to stimulate to skin due to fold.
In addition, owing to the leg pars contractilis of patent documentation 1 is made up of the tablet constituent material on product width direction with specific length, therefore, compared with the leg pars contractilis constituted with by the elastic component of wire, make the sheeting of greater area of non-telescoping shrink. It is therefore possible to form compared with the elastic component of wire that fold on the sheeting of non-telescoping becomes that many or fold becomes big and the stimulation of skin for wearer becomes by force.
Therefore, namely the present invention completes in view of above-mentioned problem, its object is to provide a kind of can along the lower limb of wearer enclose with planar configuration and also the disposable diaper of the stimulation for skin and the manufacture method of disposable diaper can be suppressed.
For solving the scheme of problem
The disposable diaper (disposable diaper 10) of the disclosure has front waist area (front waist area 20), rear waist area (rear waist area 30), and the lower crotch region (lower crotch region 25) between above-mentioned front waist area and above-mentioned rear waist area, this disposable diaper has from above-mentioned front waist area towards the product length direction (product length direction L) of above-mentioned rear waist area and the product width direction (product width direction W) orthogonal with product length direction, this disposable diaper possess cross over above-mentioned lower crotch region and from above-mentioned lower crotch region towards above-mentioned front waist area and above-mentioned rear waist area at least any one extension absorber (absorber 40) and along being located at the ratio above-mentioned absorber leg-openings portion configuration by the position outside above-mentioned product width direction and can along the flexible leg pars contractilis (leg pars contractilis 75) of the said goods length direction, its purport is in that, above-mentioned leg-openings portion and above-mentioned leg pars contractilis are along with extending outside the said goods width from above-mentioned lower crotch region towards the said goods length direction, the 2nd leg telescopic material (the 2nd leg telescopic material 77) of the 1st leg telescopic material (the 1st leg telescopic material 76) that above-mentioned leg pars contractilis possesses the banding on the said goods width with specific length and the short wire of the length being arranged on the said goods width of the above-mentioned 1st leg telescopic material of length ratio in the 1st telescopic material configuring area being configured with above-mentioned 1st leg telescopic material and on the said goods width, the position of skin bearing surface side is being leaned on to be provided with the sheeting (flank 70) of the non-telescoping engaged with above-mentioned 1st leg telescopic material and/or above-mentioned 2nd leg telescopic material than above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material, percentage elongation on the said goods length direction of above-mentioned 2nd leg telescopic material is higher than the percentage elongation on the said goods length direction of above-mentioned 1st leg telescopic material.
In addition, the manufacture method of the disposable diaper of the disclosure installs the 1st leg telescopic material constituting the leg pars contractilis along the configuration of leg-openings portion and the 2nd leg telescopic material under the building block continuous print state constituting disposable diaper on the tablet of conveying, its purport is in that, this manufacture method has following operation: conveying operation, carries the above-mentioned 1st leg telescopic material of continuous print banding and the above-mentioned 2nd leg telescopic material of continuous print wire respectively; Elongation operation, when making above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material converge, makes above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material extend along conveying direction; Swing operation, make the above-mentioned 1st leg telescopic material of elongation state and the 2nd leg telescopic material carry along the crisscross displacement orthogonal with conveying direction; Cut off operation, cut off above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material according to product length; And adhering processes, above-mentioned 1st leg telescopic material after cut-off and above-mentioned 2nd leg telescopic material are pasted onto on above-mentioned tablet, in above-mentioned conveying operation, when the percentage elongation making the above-mentioned 2 leg telescopic materials percentage elongation along conveying direction elongation and above-mentioned 2nd leg telescopic material be higher than above-mentioned 1st leg telescopic material, carry above-mentioned 1st leg telescopic material and the 2nd leg telescopic material.
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 along F1-F1 line of the disposable diaper shown in Fig. 1.
Fig. 4 indicates that the figure of the state that the disposable diaper of present embodiment is dressed in wearer.
Fig. 5 indicates that the side view manufacturing device of the absorbent commodity of embodiment.
Detailed description of the invention
Then, the embodiment of the disposable diaper of the present invention it is described with reference to. It addition, in the record of the following drawings, same or like part is labelled with same or like accompanying drawing labelling. But, accompanying drawing is schematic, it should be noted that the ratio of each size etc. are different from real ratio.
Thus, should refer to the following description and judge concrete size etc. Additionally, also can comprise the relation of size each other each other at accompanying drawing, part that ratio is different.
(1) the overall schematic configuration of disposable diaper
Fig. 1 and Fig. 2 is the expansion top view of the disposable diaper 10 of present embodiment. Fig. 3 is the sectional view along F1-F1 line of the disposable diaper 10 shown in Fig. 1. Additionally, expansion top view shown in Fig. 1 is the figure of the state during state making leg pars contractilis 75 and the leg side rivel 80 elongation extremely composition positive dough sheet 50 of disposable diaper 10, flank 70 etc. be formed without fold, but for the ease of explanation, it is illustrated that the state that leg side rivel 80 has stretched.
Disposable diaper 10 has front waist area 20, lower crotch region 25 and rear waist area 30. Front waist area 20 is the part that the frontal cowl (abdominal section) with wearer contacts. Additionally, rear waist area 30 is the part that the rear waist portion (back portion) with wearer contacts. Lower crotch region 25 is between front waist area 20 and rear waist area 30. Additionally, be formed with pair of leg in disposable diaper 10 to enclose peristome 35 (with reference to Fig. 4). Leg-openings portion 35 is located at the side end in the product width direction of disposable diaper, is the part enclosing configuration when disposable diaper is dressed in wearer along the lower limb of wearer.
It addition, in the present embodiment, the past waist area 20 is called product length direction L towards the direction of rear waist area 30, the direction with the L-orthogonal of product length direction is called product width direction W.
Disposable diaper 10 possesses the lower crotch region 25 of leap and from lower crotch region towards the absorber 40 of at least any one extension in front waist area 20 and rear waist area 30. Absorber 40 is made up of absorbent core 40a and core covering 40b.
Absorbent core 40a is same with the absorbent core used in conventional disposable diaper, it is possible to use the known component such as comminution pulp, high absorption polymer, material to suitably constitute. Absorbent core 40a is coated with by the core covering 40b of lamellar. Core covering 40b is the sheet material of cladding absorbent core 40a. A part for skin side of at least leaning on of core covering 40b is made up of the various fabric nonwoven cloths with liquid permeability or tissue sheet sheet (tissuesheet). For instance, it is possible to use grammes per square metre to be about 10g/m2��30g/m2Hot blast fabric nonwoven cloth, spun bond nonwoven fabric, SMS (spunbond-melt blown-spunbond) non-woven fabrics or grammes per square metre be about 10g/m2��30g/m2Tissue sheet sheet.
Face side (skin bearing surface side) at absorber 40 possesses the positive dough sheet 50 of liquid permeability. Additionally, the rear side (non-skin bearing surface side) at absorber 40 possesses liquid-impermeable back sheet 60a.
Side edge part on the product width direction W of absorber 40 possesses flank 70 respectively.Flank 70 is made up of the non-woven fabrics of 1 or multiple overlaps of more than 2. Additionally, a pair flank 70 possesses magic tape 90 respectively.
Magic tape 90 extends along product width direction W in rear waist area 30, and disposable diaper 10 is maintained on the health of wearer by it by anchoring at the non-skin bearing surface of front waist area 20.
In the present embodiment, front waist area 20, rear waist area 30 and magic tape 90 waistline maintaining part is constituted. The waistline maintaining part of rear waist area 20 is the scope extended in the width direction from the region of the snap portions being provided with magic tape 90. The waistline maintaining part of front waist area 30 is from being provided with the scope that the region of target portion 95 extends in the width direction.
Formed at lower crotch region 25 and can along crotch pars contractilis 200a flexible for product length direction L additionally, disposable diaper 10 possesses. Specifically, crotch pars contractilis 200a is arranged in the crotch 200 being formed at lower crotch region 25. It addition, in the structure of aftermentioned middle detailed description crotch 200 and crotch pars contractilis 200a.
The face side (positive dough sheet 50 side) of absorber 40 possesses and is formed around leg-openings portion 35 and can along a pair flexible for product length direction L leg pars contractilis 75.
Leg pars contractilis 75 is longer than crotch pars contractilis 200a on the L of product length direction, and is arranged on the W of product width direction than crotch pars contractilis 200a position in the outer part. It addition, in the structure of aftermentioned middle detailed description leg pars contractilis 75.
Additionally, possess along the product length direction L a pair leg side rivel 80 extended in the inner side (position by 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, is disposed on than the leg pars contractilis flexible rivel by the erecting of the position inside product width direction. Leg side rivel 80 is arranged in than leg pars contractilis 75 by the position inside product width direction, as leg side pars contractilis function.
The flank 70 medial end on product width direction turns back to surficial sheets side, its two-layer laminate. It is provided with elastic component 71 (with reference to Fig. 3) with the state extended along its length between the flank 70 of this two-layer. This flank 70 and elastic component 71 is utilized to form leg side rivel 80.
The expansion top view of the disposable diaper shown in Fig. 1 is the state after elastic component 71 contraction of leg side rivel 80, and the expansion top view of the disposable diaper shown in Fig. 2 represents the state after elastic component 71 elongation of leg side rivel 80.
Leg side rivel 80 has the bonding part 81 engaged with positive dough sheet 50 or back sheet 60a and the free end portion 82 being configured with elastic component. Length direction middle body in free end portion 82, that comprise lower crotch region 25 utilizes elastic component 71 to shrink along product length direction, constitutes contraction flow region 84. Leg side rivel 80 erects for base end part with bonding part 81 when wearing, and the contraction flow region 84 of free end portion 82 is as the contact skin of apex Yu wearer. That is, bonding part becomes the base end part erected of leg side pars contractilis.
It addition, contraction flow region 84 is the part utilizing elastic component 71 to shrink essentially along product length direction, it is in addition to when not playing contractility to be configured with the concept outside the part of elastic component 71. Additionally, in Fig. 2 in leg side rivel, be bonded to the bonding part 81 of flank 70 and positive dough sheet 50 and mark oblique line and represent.
Bonding part 81 is provided with multiple, and the 1st bonding part 81A is arranged in than contraction flow region 84 by the position outside product length direction, and the 2nd bonding part 81B is arranged in than contraction flow region 84 by the position outside product width direction. Thus, leg side rivel 80 is configured to its product length direction middle body comprising lower crotch region 25 and erects to wearer side.
In the bonding part 81 of leg side rivel 80, be arranged in and be arranged between crotch pars contractilis 200a and leg pars contractilis 75 on the W of product width direction by the 2nd bonding part 81B of the position outside product width direction than contraction flow region 84. The 2nd bonding part 81B length-over in product length direction engages with back sheet 60a. It addition, back sheet 60a is arranged between absorber 40 and covering sheet material 60, as leakproof sheet material function.
In the bonding part 81 of leg side rivel 80, be arranged in and engage with positive dough sheet 50 by the 1st bonding part 81A of the position outside product length direction than contraction flow region 84.
It addition, the bonding part 81 of leg side rivel 80 can adopt various structure. Bonding part both can be such as on product length direction before lower crotch extends to waist area and rear waist area and the part with front chip bonding, can also be leaning on the part engaged with liquid-impermeable back sheet, covering sheet material outside width than absorbent core 40a, be configured to the base end part erected.
As long as additionally, leg side rivel is arranged in the ratio leg pars contractilis rivel by the erecting inside product width direction, be not limited to said structure, it is possible to the structure adopting conventional well-known leg side rivel is self-evident.
Additionally, be provided with the waistline pars contractilis 85 flexible along product width direction on product width direction between a pair magic tape. Waistline pars contractilis 85 is arranged between a pair magic tape when overlooking, and shrinks in the width direction between magic tape. Waistline pars contractilis 85 is arranged in the face of the skin abutting side of positive dough sheet, shrinks in the width direction between magic tape.
In the present embodiment, waistline pars contractilis 85 is made up of Stretchable sheet. The component constituting waistline pars contractilis 85 is not particularly limited, but preferably as far as possible uses relatively thin and flexural rigidity is relatively low, contracting amplitude-frequency is less material. In the present embodiment, as waistline pars contractilis 85, use weight per unit area is 20g/m2��45g/m2Retractility film.
Waistline pars contractilis 85, after being stretched to 1.5 times of length of non-elongate state (naturalness)��2.5 times, utilizes hot-melt adhesive or heat treated etc. to be adhered to covering sheet material 60.
In the present embodiment, waistline pars contractilis 85 is arranged between covering sheet material 60 and back sheet 60a. But, reaching than absorbent core 40a by the structure outside product length direction at core covering 40b, waistline pars contractilis 85 can also be arranged between core covering 40b and back sheet 60a or covering sheet material 60. The position of waistline pars contractilis is not particularly limited, but is preferably configured in the position leaning on non-skin bearing surface side than absorber 40. In addition it is also possible in being arranged in the region being configured without absorber, between flank 70 and back sheet 60a or covering sheet material 60.
It addition, the waistline pars contractilis of present embodiment is configured to flexible along product width direction but it also may be configured to waistline pars contractilis and stretch along product width direction and product length direction.
(2) leg pars contractilis
Then, leg pars contractilis 75 is explained.Leg pars contractilis 75 is configured to configure by the leg-openings portion 35 of the position outside product width direction than absorber 40 along being located at, it is possible to stretch along product length direction L. Leg-openings portion 35 and leg pars contractilis 75 have the width inner end region 75I that the position on width is arranged in the inner side of lower crotch region, along with extending outside product width direction from lower crotch region 25 towards product length direction. It addition, the width inner end region 75I of leg pars contractilis 75 both can configure continuously on product length direction, it is also possible to not continuous in product length direction.
The leg pars contractilis 75 of present embodiment possesses the 2nd leg telescopic material 77 of the short wire of the length on the product width direction of length ratio the 1st leg telescopic material 76 on the 1st leg telescopic material 76 of the banding on product width direction with specific length and product width direction.
1st leg telescopic material 76 is made up of Stretchable sheet. Such as, as this Stretchable sheet, for instance can use melted to polyurethane, the such thermoplastic elastomer resin of styrene and the membranaceous retractility film made, the flexible nonwoven fabrics being made up of contractile fibre, paste on retractility film, flexible nonwoven fabrics by the composite sheet etc. of partial cutoff or the crisp non-stretch sheet material weakened.
In addition it is also possible to constitute the 1st leg telescopic material 76 substitute this Stretchable sheet by configuring the elastic component of the banding being made up of polyurethane elastomeric fiber, natural rubber.
1st leg telescopic material 76 is arranged between flank 70 and covering sheet material 60. Or, in the region possessing the back sheet 60a being arranged between absorber 40 and covering sheet material 60, the 1st leg telescopic material 76 is arranged between back sheet 60a and flank 70.
The Stretchable sheet at least width in lower crotch region 25 constituting the 1st leg telescopic material 76 is 5mm (width on the W of product width direction under the naturalness of disposable diaper 10)��45mm, more preferably 12.5mm��35mm. If above-mentioned width is less than 5mm, then substantially do not find to enclose along the lower limb of wearer with face and avoid the power tied tight to concentrate partly thus reducing the flexible member such effect of load for skin, if above-mentioned width is more than 45mm, compared with then overall with the disposable diaper length on product width direction, becoming excessive along the region that lower limb encloses, Stretchable sheet is easily involved in or clot to the bodyside of wearer.
The percentage elongation of the 1st leg telescopic material 76 is preferably 1.4 times��2.2 times. In the present embodiment, the percentage elongation of the 1st leg telescopic material 76 is set to 1.7 times. It addition, the elongation degree being meant that the 1st leg telescopic material the 76 or the 2nd leg telescopic material 77 of percentage elongation, specified below.
The percentage elongation of the 1st leg telescopic material=(length of the 1st leg telescopic material under elongation state) �� (length of the 1st leg telescopic material under naturalness), or
The percentage elongation of the 2nd leg telescopic material=(length of the 2nd leg telescopic material under elongation state) �� (length of the 2nd leg telescopic material under naturalness)
It addition, in this manual, for instance following this percentage elongation of measurement.
1st, when during disposable diaper 10 is enclosed in packaging etc., take out disposable diaper 10 from packaging. Then, the configuring area of the 1st leg telescopic material is sheared. Now, shear with also comprising the non-telescoping sheet material that engages with the 1st leg telescopic material.And then, outside the product width direction to the 2nd leg telescopic material, the position of 0.5mm��1.0mm is sheared along the 2nd leg telescopic material. Measurement is only the percentage elongation of the sample of the 1st leg telescopic material after shearing, the percentage elongation of measurement the 1st leg telescopic material. Additionally, measure the percentage elongation of the sample comprising the 2nd leg telescopic material after shearing, the percentage elongation of measurement the 2nd leg telescopic material.
For each sample, 20 DEG C �� 2 DEG C, place 60 minutes under the environment of relative humidity 60% �� 5%RH, measure the length of the 1st leg telescopic material and the 2nd leg telescopic material along telescopic direction. Using this length as " length of the 1st leg telescopic material under naturalness " and " length of the 2nd leg telescopic material under naturalness ".
2nd, the length in the telescopic direction of target area when measuring the length in the telescopic direction of the target area under this state (i.e. naturalness) and extend to the state that cannot estimate the fold that confirmation is caused by elastic component on non-telescoping sheet material from naturalness. Using this length as " length of the 1st leg telescopic material under elongation state " and " length of the 2nd leg telescopic material under elongation state ".
By utilizing these measurement results to be calculated measuring percentage elongation with above-mentioned formula.
Additionally, the interval between medial extremity on the product width direction W of pair of right and left leg pars contractilis 75 is along with broadening from lower crotch region 25 towards front waist area 20, and along with broadening from lower crotch region 25 towards rear waist area 30. When diaper being dressed in the health of wearer, by leg pars contractilis being configured in lower crotch shape that is narrower and that broaden towards the waistline of front and back, leg pars contractilis more along the lines of health, can enclose extended configuration leg pars contractilis rightly at the lower limb of wearer.
Further, pair of right and left leg pars contractilis 75 is narrower at the interval (D2 in figure) of the end of rear waist area 30 than pair of right and left leg pars contractilis 75 at this interval (D1 in figure) of the end of front waist area 20. It addition, this interval is obtained by the distance between the medial extremity on the product width direction W being widened by disposable diaper 10 as measuring pair of right and left leg pars contractilis 75 after not having the state of fold and keeping from naturalness along product length direction L and product width direction W.
The skin surface of the health of wearer to extend in buttocks big especially, comparatively notable by the position outside its width. Additionally, leg pars contractilis 75 is sealed at the health of wearer. Therefore, by being set to D2 > D1, even if when the motion of wearer puts on disposable diaper 10, the leg pars contractilis 75 of buttocks side also is able to keep snugly stretching, even if the variable quantity stretched is relatively big, leg pars contractilis 75 is without ejecting. Thus, it is possible to suppress to be caused that disposable diaper 10 misplaces by leg pars contractilis 75.
2nd leg telescopic material 77 is arranged in the 1st telescopic material configuring area being configured with the 1st leg telescopic material, configures overlappingly with the 1st leg telescopic material 76. 2nd leg telescopic material configures along the width medial end of the 1st leg telescopic material 76.
2nd leg telescopic material 77 is made up of the elastic component of wire. Such as can use the elastic component of the rugosity of 340dtex��940dtex. Additionally, be configured to the percentage elongation percentage elongation higher than the 1st leg telescopic material 76 of the 2nd leg telescopic material 77.Specifically, the percentage elongation of the 2nd leg telescopic material 77 is preferably 1.7 times��2.5 times. In the present embodiment, the percentage elongation of the 2nd leg telescopic material 77 is set to 2.2 times.
2nd leg telescopic material 77 is arranged between the 1st leg telescopic material 76 and covering sheet material 60. It addition, when not possessing covering sheet material 60, it is also possible to it is arranged between the 1st leg telescopic material 76 and back sheet 60a.
It addition, the 2nd leg telescopic material 77 of present embodiment is arranged in the non-skin bearing surface side of the 1st leg telescopic material 76, but the 2nd leg telescopic material 77 of the present invention can also be arranged in the skin bearing surface side of the 1st leg telescopic material 76. When the 2nd leg telescopic material 77 is arranged in the skin bearing surface side of the 1st leg telescopic material 76, it is arranged in the skin bearing surface side of the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 as the lateral plate material of the sheeting of non-telescoping.
Additionally, the concept of the state that the state being arranged in the non-skin bearing surface side of the 1st leg telescopic material 76 refers to the state not only comprising the non-skin bearing surface with the 1st leg telescopic material 76 and abutting, the non-skin bearing surface side that is also contained in the 1st leg telescopic material 76 configures indirectly relative to the 1st leg telescopic material 76. Further, the concept of the state that the state of the skin bearing surface side of the 1st leg telescopic material 76 refers to the state not only comprising the skin bearing surface with the 1st leg telescopic material 76 and abutting, the skin bearing surface side being also contained in the 1st leg telescopic material 76 configures indirectly it is arranged in relative to the 1st leg telescopic material 76.
But, if the 2nd leg telescopic material is arranged in the skin bearing surface side of the 1st leg telescopic material, then utilize the part that the 2nd leg telescopic material shrinks to be prone to contact skin, the stimulation for skin likely becomes strong. Thus it is preferred that, the 2nd leg telescopic material is arranged in the non-skin bearing surface side of the 1st leg telescopic material, adopts this structure, it is possible to prevent from utilizing the part that the 2nd leg telescopic material shrinks directly to contact skin.
And, more preferably, 1st leg telescopic material 76 is arranged in skin bearing surface side, and the 2nd leg telescopic material 77 is arranged in non-skin bearing surface side, 1st leg telescopic material 76 and non-telescoping sheet material with bond pattern each other be bond pattern that is discontinuous and that be interrupted (such as, spiral coating etc. is utilized jointly to there is the non-such application pattern in existence portion that there is portion and bonding agent of bonding agent) engage, on the other hand, 2nd leg telescopic material is with continuous print bond pattern (such as, as the slit coating carried out for rubber covered wire, the existence portion continuous print application pattern of painting limit (Japanese: the PVC De work) bonding agent like that portion matches is there is with rubber covered wire) engage.
Thus, the feel that can make skin bearing surface side is more soft and relaxes the stimulation for skin, and the flexible material of the 2nd leg of the wire of non-skin bearing surface side can engage with the sheet material of the 1st leg telescopic material continuously, therefore, it also is able to reduce the fold produced due to the 2nd leg telescopic material further, it is possible to relax the stimulation for skin.
It addition, leg pars contractilis 75 is the part utilizing Stretchable sheet etc. to shrink essentially along product length direction, it is in addition to when not playing contractility to be configured with the concept outside the part of Stretchable sheet.
Fig. 4 is the figure of state of the disposable diaper showing schematically that dress has embodiment, is the figure that sees of the front from wearer. As shown in Figure 4, the leg-openings portion of disposable diaper utilizes leg pars contractilis 75 to enclose configuration along lower limb.Now, owing to the 1st leg telescopic material is banding, therefore, it is possible to the lower limb that the leg-openings portion 35 of disposable diaper is arranged in wearer with planar is placed.
In addition, owing to being configured with the 2nd leg telescopic material 77 of the narrow wire of width ratio the 1st leg telescopic material 76, the percentage elongation of the 2nd leg telescopic material 77 is higher than the percentage elongation of the 1st leg telescopic material 76, therefore, it is possible to utilize the 2nd leg telescopic material 77 to make the flank 70 of non-telescoping shrink. But, owing to the percentage elongation of the 1st leg telescopic material 76 bigger with the contact area of skin is relatively low, therefore, it is possible to suppress the fold of leg pars contractilis 75 entirety as the 1st telescopic material configuring area.
By arranging the 1st leg telescopic material and the 2nd leg telescopic material simultaneously, the 2nd leg telescopic material 77 can be utilized to make the lateral plate material of non-telescoping shrink partly, suppress the overall fold that produces of leg pars contractilis 75, and utilize the 1st leg telescopic material 76 to enclose with the planar whole leg pars contractilis 75 of configuration along the lower limb of wearer.
In addition, owing to the 2nd leg telescopic material configures along the medial end in the product width direction of the 1st leg telescopic material, therefore, the outboard end on the product width direction as the 1st leg telescopic material enclosing closely sealed position with the lower limb of wearer can be suppressed excessively closely sealed, it is possible to reduce by the stimulation for skin of the leg-openings portion.
Further, in order to reduce the stimulation for skin of the leg-openings portion, it is desirable to the 2nd leg telescopic material is arranged in and leans on the position inside product width direction than the center, product width direction of the 1st leg telescopic material. The position shunk due to the amplitude peak of leg pars contractilis is positioned at the position leaning on width side than the width center of leg pars contractilis 75, therefore, the medial end on the product width direction of leg pars contractilis 75 more strongly shrinks compared with the outboard end on the product width direction of leg pars contractilis 75.
The position of the end in the outer part on the product width direction of the 1st leg telescopic material is more to be sealed at the position that the lower limb of wearer encloses compared with the position of end in the inner part, therefore, by near medial end position configuration the 2nd leg telescopic material, it is possible to suppress leg-openings portion more strongly with contact skin.
Thus, wearer can be fitted in the 2nd leg telescopic material 77 for starting point than the 2nd leg telescopic material 77 by the part outside width. By the position in the outer part on the product width direction of the 1st leg telescopic material 76 is obtained broader, can be set to while the length (width) that leg pars contractilis 75 maintains on product width direction and can more be sealed at the state that the lower limb of wearer encloses, therefore, it is possible to improve the leg pars contractilis 75 stickiness for wearer.
Medial end on the product width direction of the 1st leg telescopic material and the outboard end on the product width direction of the 1st leg telescopic material configure side by side, the length constant on the product width direction of the 1st leg telescopic material. In the inconstant situation of length on the product width direction of the 1st leg telescopic material, non-constant relative to the contractility of the lower limb of wearer, stress is concentrated sometimes partly. But, due to the consistent length on the product width direction of the 1st leg telescopic material, in the way of contacting in the same area, configure leg pars contractilis 75 therefore, it is possible to enclose along the lower limb of wearer.
End on the product length direction of the 2nd leg telescopic material can also be arranged in than the end on the product length direction of the 1st leg telescopic material by the position inside product length direction.End on the product length direction of the 1st leg telescopic material and the end on the product length direction of the 2nd leg telescopic material are the part becoming and shrinking basic point respectively, owing to the thickness at this position is bigger than adjacent non-telescoping portion, therefore, between the lower limb at this position and wearer encloses, gap is sometimes produced when wearing. Further, if the end on the product length direction of the 1st leg telescopic material is consistent with the end on the product length direction of the 2nd leg telescopic material, then the contraction of this part becomes strong, and the thickness difference of non-telescoping portion and pars contractilis likely becomes much larger.
Such bad in order to eliminate, preferably, end on the product length direction of the end on the product length direction of the 1st leg telescopic material and the 2nd leg telescopic material is configured with misplacing, and, by the 2nd higher for percentage elongation telescopic material is arranged in inside length direction, can periodically shrink, it is possible to suppress the fold caused by the contraction of local.
Back sheet 60a and the covering sheet material 60 of non-telescoping it is laminated with in the non-skin bearing surface side of leg pars contractilis. Outboard end on the product width direction of covering sheet material 60 configures along leg-openings portion, and whole of leg pars contractilis and covering sheet material 60 are overlapping in a thickness direction. On the other hand, the outboard end on the product width direction of back sheet 60a is the linearity extended along product length direction, and a part and the back sheet 60a of leg pars contractilis are overlapping in a thickness direction.
Owing to the part of the front waist area of leg pars contractilis is positioned at the position inside width compared with the part of rear waist area, therefore, the region that the part of front waist area is overlapping with back sheet 60a compared with the part of rear waistline area side becomes big.
Additionally, leg pars contractilis 75 is arranged in leans on the position outside product width direction than the 2nd bonding part 81B of leg side rivel. Leg side rivel be configured to than the 2nd bonding part 81B by the contraction flow region 84 inside width with the 2nd bonding part 81B be basic point erect to wearer side.
Such as, if being configured with leg pars contractilis 75 than the 2nd bonding part 81B by inside width, then sometimes utilizing leg pars contractilis 75 to erect than the 2nd bonding part 81B by inside width, contraction flow region 84 erects outside width. If contraction flow region 84 erects outside width, then body fluid likely leaks into outside width. But, by leaning on configuration leg pars contractilis 75 outside width side than the 2nd bonding part 81B, contraction flow region 84 is prone to erect to wearer side.
(3) shape of crotch
Then, the shape of crotch 200 is described. As described above, crotch 200 has crotch pars contractilis 200a. Crotch pars contractilis 200a is configured to maintain smooth shape in a part for lower crotch region at disposable diaper compared with other parts of absorber 40 when wearing. Crotch 200 has at least can along crotch pars contractilis 200a flexible for product length direction L or product width direction W.
Crotch pars contractilis 200a and leg pars contractilis 75 are arranged independently of one another, consist of more than the 60% of the width length shrinking the absorbent core 40a of the position of this overlap in the position (being the position between core covering 40b and the back sheet 60a of cladding absorbent core 40a in the present embodiment) overlapping with absorbent core 40a. So, by utilizing crotch pars contractilis 200a to make to be configured with the portion retracts of absorbent core 40a, absorbent core 40a reduces, and is prone to maintain smooth shape compared with the absorbent core 40a part not reduced.
On the other hand, be located in leaning on the front waist area of position outside product length direction than crotch pars contractilis 200a, the absorbent core 40a of rear waist area does not utilize crotch pars contractilis 200a to shrink, therefore, when utilizing magic tape to be maintained at around the waist waistline of wearer, the crotch 200 maintained with smooth shape at the lower crotch of disposable diaper will not exceedingly be sealed at health, as a result, crotch 200 moderately configures along health.
Additionally, due to crotch 200 can be stretched along product length direction L, therefore, front waist area 20 and rear waist area 30 are prone to erect because of the contraction of crotch 200, form smooth lower crotch region at the huckle of wearer along health when wearing. Owing to front waist area and rear waist area erect from crotch pars contractilis 200a, therefore, disposable diaper 10 rises for the stickiness of wearer.
Crotch pars contractilis 200a is preferably made up of Stretchable sheet. By being made up of crotch pars contractilis 200a Stretchable sheet, the absorbent core 40a in the region being configured with Stretchable sheet similarly reduces, it is easier to maintain smooth shape. It addition, Stretchable sheet such as can be made up of the Stretchable sheet same with leg pars contractilis 75.
In addition it is also possible to constitute crotch pars contractilis 200a by configuring the elastic component of a plurality of wire banding being made up of polyurethane elastomeric fiber, natural rubber, substitute and be made up of crotch pars contractilis 200a this Stretchable sheet. In this case, in order to utilize crotch pars contractilis 200a to make absorbent core 40a similarly reduce, it is preferable that elastic component interval each other is set to below 7mm, is more preferably below 5mm. Additionally, in order to make absorbent core 40a similarly reduce, the difference at the adjacent interval between elastic component is desired for below 2mm.
Moreover it is preferred that the percentage elongation of crotch pars contractilis 200a is 1.2 times��1.8 times. In the present embodiment, the percentage elongation of crotch pars contractilis 200a is set to 1.4 times. Telescopic level in the telescopic direction (product length direction L) being meant that crotch pars contractilis 200a of percentage elongation, such as following provisions.
Telescopic level in the telescopic direction (being product length direction L in the present embodiment) being meant that crotch pars contractilis 200a of percentage elongation, such as following provisions.
Percentage elongation=(at utmost the length in the telescopic direction of the crotch pars contractilis 200a under extended configuration)/(length in the telescopic direction of the crotch pars contractilis 200a under naturalness)
It addition, in this manual, for instance following this percentage elongation of measurement.
1st, 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 60 minutes under the environment of relative humidity 60% �� 5%RH, measure the length of crotch pars contractilis along telescopic direction. Using this length as " length in the telescopic direction of the crotch pars contractilis 200a under naturalness ".
2nd, the length the telescopic direction of target area when measuring the length in the telescopic direction of the target area under this state (i.e. naturalness) and extend to the state that cannot estimate the fold that confirmation is caused by elastic component from naturalness. Using this length as " at utmost the length in the telescopic direction of the crotch pars contractilis 200a under extended configuration ". By utilizing these measurement results to be calculated measuring percentage elongation with above-mentioned formula.
So, by the expansion and contraction of crotch pars contractilis 200a is set to 1.2 times��1.8 times, it is possible to suitably follow skin flexible of wearer.
Such as, if wearer takes to roll up such anteflexion posture on front side of health, then exist in the skin of the buttocks side of wearer relative to the position that the state of body line up is extended about 30%.
That is, if making the expansion and contraction of crotch pars contractilis 200a less than 1.2 times, then the contraction of the crotch pars contractilis 200a under naturalness is insufficient, compared with the situation being not provided with crotch pars contractilis 200a, the contraction of the absorbent body area of the huckle of disposable diaper 10 is less, and in the huckle of wearer, the degree to obtain even shape in the way of health becomes insufficient.
On the other hand, if making the expansion and contraction of crotch pars contractilis 200a more than 1.8 times, then the contraction on the shrinkage direction of crotch pars contractilis 200a is oversize, therefore, the region that there is crotch pars contractilis 200a is easily made into and state more closely sealed compared with health, and disposable diaper 10 is prone to misplace to the lower section of wearer.
Additionally, the center configuration on the product length direction L of crotch pars contractilis 200a is in the position than the side, forward waist area 20, center on the product length direction L of disposable diaper 10. But, crotch pars contractilis 200a configures in the way of the center on the product length direction L crossing over disposable diaper 10.
In this case, it is contemplated that the rigidity of other components of the rigidity of absorbent core 40a and composition disposable diaper 10 properly selects the spacing of the rugosity of elastic component of use, configuration, but it is preferred that, when disposable diaper 10 main body is set to naturalness (non-stretched state), the whole region of side edge part on the product width direction W of absorbent core 40a is made to become the state of contraction.
Additionally, the lower crotch region 25 at absorber 40 is formed with breach 115 (breach 125). Breach 115 and breach 125 are the regions being absent from constituting the absorbent core 40a of absorber 40. In the present embodiment, breach 115 and breach 125 are equivalent to the low rigid portion that the weight per unit area of absorbent core 40a other parts than absorbent core 40a are low. Alternatively, it is also possible to make the region of breach 115 and breach 125 be formed as the weight per unit area of absorbent core 40a other parts lower than absorbent core 40a substitute formation breach 115 and breach 125.
Breach 115 and breach 125 exist along the edge part on the product length direction L of crotch 200. Even if it is further preferred, that be formed with breach 115 and breach 125, the absorbent core 40a and the absorbent core 40a being positioned at lower crotch region 25 that are positioned at front waist area 20 and rear waist area 30 are not also particularly cut completely through in the direction of the width.
Breach 115 and breach 125 are along with the length on the L of product length direction outside the W of product width direction. Utilize such shape, be easier to reduce outside the product width direction W of absorbent core 40a, therefore, it is easier to form smooth " bottom ". In addition, the absorbent core 40a of the position being positioned at waist area 20 more forward than breach 115 erects from " bottom " than the absorbent core 40a of the position of breach 125 waist area 30 rearward with being positioned at, it is prone to the curved of health (abdominal part and buttocks) along wearer, therefore, himself shape of disposable diaper can be more nearly the shape of wearer's body.
Additionally, the edge part of the forward waist area 20 (rear waist area 30) of breach 115 (breach 125) is arc-shaped. The edge part of breach 115 (breach 125) is the shape that circular arc is centrally located at than this edge part position of waist area 30 (front waist area 20) rearward.Utilize such shape, it is easy to be more prone to and significantly along the curve deformation of wearer's body.
(4) manufacture method of disposable diaper
Then, an example of the manufacture method of the absorbent commodity of present embodiment is described with reference to Fig. 5. It addition, the method not illustrated in the present embodiment can use existing method. Additionally, the manufacture method of following description is an example, it is also possible to utilize other manufacture method to manufacture. The manufacture method of absorbent commodity at least includes building block formation process, building block loads operation, lower limb encloses formation process, cut off operation.
In building block formation process, form the building block constituting absorbent commodity. Specifically, for instance, stacking absorbing material and molding absorber 40.
Loading in operation at building block, on the tablet constituting back sheet, mounting constitutes the 1st leg telescopic material 76 of leg pars contractilis 75, the 2nd leg telescopic material 77, constitutes other tablet, leakproof sheet material, the absorber etc. such as tablet of positive dough sheet and constitute the building block of disposable diaper 10.
Lower limb encloses formation process and encloses recess cut-out positive dough sheet 50 and the covering sheet material 60 etc. in region along composition lower limb. Thus, formation is configured in the leg-openings portion 35 that the lower limb of wearer is placed.
Cut off in operation at continuum, by be configured with positive dough sheet 50, covering sheet material 60, absorber the 40 and the 1st leg telescopic material the 76, the 2nd leg telescopic material 77 continuum cut into the size of a product along width W. Thus, disposable diaper 10 is manufactured.
Then, the structure manufacturing device of absorbent commodity in above-mentioned manufacture method, that use in the building block mounting operation of configuration leg pars contractilis 75 is described in detail. Fig. 5 indicates that the side view manufacturing device 100 of the absorbent commodity of embodiment. The manufacture device 100 of absorbent commodity has feed mechanism 110, swing mechanism 120, guides mechanism 130, shut-off mechanism 140, sets up an organization 150, adhesive applicating mechanism 160. The device 100 that manufactures of this absorbent commodity is the device installing the leg pars contractilis 75 carried continuously under the building block continuous print state constituting absorbent commodity on the tablet of conveying.
The building block mounting operation of configuration leg pars contractilis 75 has carries operation, elongation operation, swing operation, leg to cut off operation, adhering processes.
In conveying operation, carry the 1st leg telescopic material 76 of continuous print banding and the 2nd leg telescopic material 77 of continuous print wire respectively.
In elongation operation, the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 is made when converging, to make the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 extend along conveying direction when utilizing feed mechanism 110 and swing mechanism 120. In the present embodiment, it is configured to make the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 converge and engage, under state upon engagement, makes the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 extend along conveying direction.
Specifically, at the 2nd leg telescopic material 77 carrying the state after extending along conveying direction than feed mechanism 110 by conveying direction upstream side continuously. It is configured to utilize adhesive applicating mechanism 160 adhesive-applying on the 2nd leg telescopic material 77. Adhesive applicating mechanism 160 is the device of the jet printing type for adhesive-applying (such as hot-melt adhesive), adhesive-applying on the 2nd leg telescopic material 77 of conveying.
Then, the 1st leg telescopic material 76 carried continuously is pasted the 2nd leg telescopic material 77 being coated with bonding agent. Thus, the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 integration and engage. Now, by not making the 1st leg telescopic material 76 extend (or elongation is the percentage elongation lower than the 2nd leg telescopic material 77), it is possible to make the percentage elongation percentage elongation higher than the 1st leg telescopic material 76 of the 2nd leg telescopic material 77.
Alternatively, it is also possible to not adhesive-applying on the 2nd leg telescopic material 77, and on the 1st leg telescopic material 76 adhesive-applying. But, by being configured to adhesive-applying on the 2nd leg telescopic material 77 that width is comparatively short, it is possible to suppress the coating amount of bonding agent. In addition it is also possible to be configured to be respectively applied bonding agent on the 1st leg telescopic material the 76 and the 2nd leg flexible 77.
Then, utilize feed mechanism 110 to carry the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77, the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 is sent towards swing mechanism 120. Feed mechanism 110 possesses the 1st rotating mechanism the 111, the 1st roller 112, band member 113, niproll 114. 1st rotating mechanism 111 be configured to the 1st rotating shaft 111a be centre of gyration make lower limb enclose elastic component along outer peripheral face to conveying direction MD carry. It addition, the outer peripheral face at the 1st rotating mechanism 111 is configured with band member 113, the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 is transferred along the outer peripheral face of the 1st rotating mechanism 111 via band member 113.
1st roller 112 is arranged in the position of the upstream side depending on conveying direction MD than the 1st rotating mechanism 111. Band member 113 is the band of the ring-type of convolution between the 1st rotating mechanism the 111 and the 1st roller 112. Band member 113 is utilized to carry 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 is on the outer peripheral face being connected to band member 113. The outer peripheral face of niproll the 114 and the 1st rotating mechanism 111 is arranged as opposed to. 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 passes through between band member 113 and niproll 114.
1st rotating mechanism the 111 and the 1st roller 112 rotates to the counter clockwise direction shown in Fig. 5, and band member 113 moves widdershins. 1st leg telescopic material the 76 and the 2nd leg telescopic material 77, after being transported to the 1st rotating mechanism side from the 1st roller side, is separately transferred towards the 2nd rotating mechanism 121 of swing mechanism 120 from the outer peripheral face of the 1st rotating mechanism.
The rotary speed being configured to the 2nd rotating mechanism 121 is faster than the rotary speed of the 1st rotating mechanism 111. 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 is configured to be directed in the process of the 2nd rotating mechanism 121 from the 1st rotating mechanism 111 and utilizing the speed difference of the 1st rotating mechanism the 111 and the 2nd rotating mechanism 121 to extend along conveying direction. The 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 utilizing the 1st rotating mechanism conveying is configured to the percentage elongation percentage elongation higher than the 1st leg telescopic material of the 2nd leg telescopic material. Owing to extending mutually in this condition, therefore, the percentage elongation of the 2nd leg telescopic material 77 it is configured to when arriving 2 rotating mechanism 121 also above the percentage elongation of the 1st leg telescopic material 76.
Additionally, in the present embodiment, it is configured to utilize feed mechanism 110 to carry leg pars contractilis 75 but it also may be configured to do not possess feed mechanism 110, and after the 1st leg telescopic material and the 2nd leg telescopic material being bonded, leg pars contractilis 75 is directed to swing mechanism 120.
In swinging operation, swing mechanism 120 is utilized to make the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 of elongation state carry along the crisscross displacement orthogonal with conveying direction. Swing mechanism 120 has the 2nd rotating mechanism the 121, the 3rd rotating mechanism 122, armite 123. 2nd rotating mechanism 121 with the 2nd rotating shaft 121a be centre of gyration the leg pars contractilis that supplies from the 1st rotating mechanism 111 is carried along outer peripheral face, carry towards the 4th rotating mechanism 131 described later.
2nd rotating mechanism 121 is linked to, by armite 123, the 3rd rotating mechanism 122 rotated centered by the 3rd rotating shaft 122a. One end 123c of armite 123 is linked to the outer peripheral face of the 3rd rotating mechanism 122, and the other end 123d of armite 123 is linked to the 2nd rotating shaft 121a of the 2nd rotating mechanism 121. Being rotated by the 3rd rotating mechanism 122 and drive, the 2nd rotating mechanism 121 swings to the width orthogonal with conveying direction MD. 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 is sent to what width swung simultaneously towards guiding mechanism 130 by the 2nd rotating mechanism 121 in the cycle with regulation. Leg telescopic material is transferred along width displacement towards guiding mechanism 130, and the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 sent out from swing mechanism 120 is arranged in the outer peripheral face guiding mechanism 130 with curve-like.
Guiding mechanism 130 to have the 4th rotating mechanism 131, the 4th rotating mechanism 131 maintains the shape of the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 come from swing mechanism 120 supply and 150 is sent towards setting up an organization by the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77. 4th rotating mechanism 131 has multiple retaining member (not shown), carries the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 by retaining member.
Leg cuts off operation and utilizes shut-off mechanism 140 to cut off the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 according to product length. Shut-off mechanism 140 cuts off the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 on each retaining member. Utilize the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 that shut-off mechanism 140 cuts off become each product leg pars contractilis 75 length is set.
In adhering processes, utilizing sets up an organization 150 is pasted onto the 1st cut-off leg telescopic material the 76 and the 2nd leg telescopic material 77 on tablet. Set up an organization and 150 possess multiple roller, by clamping building block between the rolls, each building block is engaged. Specifically, for instance, the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 utilizing shut-off mechanism 140 to cut off is arranged on discontinuously on the covering sheet material tablet 60W carrying covering sheet material 60 continuously. Utilize above operation, it is possible to be arranged on tablet by leg pars contractilis 75.
Set up an organization and 150 paste after the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 is bonded on covering sheet material tablet and utilize adhesive applicating mechanism 160 to be coated with absorber 40 and the positive dough sheet 50 continuous print front sheet tablet 50W of bonding agent. So, disposable diaper continuous print continuum on the L of product length direction is formed. Then, continuum is cut into along product width direction W the size of a product. Thus, disposable diaper 10 is manufactured.
Additionally, in the present embodiment, outside mounting material tablet 60W is provided with leg pars contractilis 75, but it is not limited to this structure, in the absorbent commodity with lateral plate material, both leg pars contractilis 75 can have been configured on the tablet constituting lateral plate material, it is also possible on other tablet, configure lower limb enclose elastic component.
In addition, in the present embodiment, by conveying under the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77 state upon engagement, but can also be configured under asynthetic state, carry mutually the 1st leg telescopic material the 76 and the 2nd leg telescopic material 77, make each of which elongation or swing.
Further, both can carry out leg after swinging operation and cut off operation, it is also possible to carry out swinging operation after leg cuts off operation.
Enclosing in formation process at lower limb, the width outboard end along leg pars contractilis 75 cuts off positive dough sheet 50, covering sheet material 60 and back sheet 60a. Thus, formation is configured in the leg-openings portion 35 that the lower limb of wearer is placed.
Cut off in operation at continuum, the continuum of positive dough sheet 50, back sheet 60a, absorber 40 etc. will be configured with cut into along product width direction W the size of a product. Thus, disposable diaper 10 is manufactured.
(5) action effect
The disposable diaper of present embodiment is by arranging the 1st leg telescopic material and the 2nd leg telescopic material simultaneously, the 2nd leg telescopic material 77 can be utilized to make the lateral plate material of non-telescoping shrink partly, suppress the overall fold that produces of leg pars contractilis 75, and utilize the 1st leg telescopic material 76 to enclose with the planar whole leg pars contractilis 75 of configuration along the lower limb of wearer.
In addition, owing to the 2nd leg telescopic material is along the medial end configuration on the product width direction of the 1st leg telescopic material of the position in the inner part, center, product width direction being positioned at than the 1st leg telescopic material, therefore, the outboard end on the product width direction as the 1st leg telescopic material enclosing closely sealed position with the lower limb of wearer can be suppressed excessively closely sealed, it is possible to reduce by the stimulation for skin of the leg-openings portion.
Due to the consistent length on the product width direction of the 1st leg telescopic material, in the way of contacting in the same area, configure leg pars contractilis 75 therefore, it is possible to enclose along the lower limb of wearer, it is possible to prevent leg pars contractilis 75 to be sealed at lower limb partly and enclose.
Owing to the 2nd leg telescopic material 77 is arranged in the non-skin bearing surface side of the 1st leg telescopic material 76, therefore, the part that the 2nd leg telescopic material shrinks is utilized to be difficult to directly contact skin. The stimulation for skin caused by fold can be reduced.
Leg pars contractilis 75 is arranged in and leans on the position outside product width direction than the 2nd bonding part 81B of leg side rivel. Such as, if being configured with leg pars contractilis 75 than the 2nd bonding part 81B by inside width, then sometimes utilizing leg pars contractilis 75 to erect than the 2nd bonding part 81B by inside width, contraction flow region 84 erects outside width. But, by leaning on configuration leg pars contractilis 75 outside width side than the 2nd bonding part 81B, contraction flow region 84 is prone to erect to wearer side.
(6) other embodiments
As it has been described above, disclose present disclosure by embodiments of the present invention, but the discussion of the part of formation the disclosure and accompanying drawing are not construed as limiting the present invention. According to the disclosure, those skilled in the art can specify various replacement embodiment, embodiment and application technology.
Such as, the 2nd leg telescopic material can not also configure along the 1st leg telescopic material, it is also possible to the configuration of local misalignment ground.
Length on the product width direction of the 1st leg telescopic material can also be not necessarily required to constant, it is also possible to the length local being configured on product width direction is different.
Outboard end on the product length direction of the 1st leg telescopic material can also be consistent with the outboard end on the product length direction of the 2nd leg telescopic material.
Leg pars contractilis 75 can also be consistent with the bonding part of leg side rivel on product width direction, it is also possible to is arranged in and leans on the position inside product width direction than the bonding part of leg side rivel.
Additionally, in the above-described embodiment, it is illustrated for opening disposable diaper, but the present invention can also apply to the disposable diaper of Briefs type. By making the edge, the left and right sides of the outer-skin sheet of the front waist area of formation and rear waist area engage there is waistline peristome and pair of leg is enclosed in the underwear shape diaper of peristome, the outer-skin sheet of front waist area and rear waist area has the elastomeric element that can shrink along product width direction W and extend, by making these elastic components contract be maintained on the waistline of wearer by disposable diaper. It is to say, the scope along edge, the left and right sides joint of product length direction L elongation becomes waistline maintaining part.
So, it goes without saying that the present invention is included in this various embodiments etc. do not recorded. Thus, protection scope of the present invention is determined by the technical characteristic of rational claims according only to described above.
It addition, the full content of Japan's patent application 2012-103412 (application on April 27th, 2012) is by referring to being incorporated into this case description.
Industrial applicability
Can provide a kind of can enclose with planar configuration along the lower limb of wearer and the disposable diaper of the stimulation for skin can be suppressed.
Description of reference numerals
10, disposable diaper; 20, front waist area; 25, lower crotch region; 30, rear waist area; 35, leg-openings portion; 40, absorber; 40a, absorbent core; 40b, core covering; 50, positive dough sheet; 60, covering sheet material; 60a, back sheet; 70, flank; 71, elastic component; 75, leg pars contractilis; 75F, leg pars contractilis the end of front waistline area side; 75I, leg pars contractilis width inner end region; 75R, leg pars contractilis the end of rear waist area; 76, the 1st leg telescopic material; 77, the 2nd leg telescopic material; 80, leg side rivel; 81, bonding part; 81A, the 1st bonding part; 81B, the 2nd bonding part; 82, free end portion; 84, contraction flow region; 85, waistline pars contractilis; 90, magic tape; 95, target portion; 115, breach; 125, breach; 200, crotch; 200a, crotch pars contractilis; L, product length direction; W, product width direction.

Claims (10)

1. a disposable diaper, it has front waist area, rear waist area and the lower crotch region between above-mentioned front waist area and above-mentioned rear waist area,
This disposable diaper has from above-mentioned front waist area towards the product length direction of above-mentioned rear waist area and the product width direction orthogonal with the said goods length direction,
This disposable diaper possess cross over above-mentioned lower crotch region and from above-mentioned lower crotch region towards above-mentioned front waist area and above-mentioned rear waist area at least any one extension absorber and along being located at the ratio above-mentioned absorber leg-openings portion configuration by the position outside above-mentioned product width direction and can along the flexible leg pars contractilis of the said goods length direction, wherein
Above-mentioned leg-openings portion and above-mentioned leg pars contractilis along with extending outside the said goods width from above-mentioned lower crotch region towards the said goods length direction,
2nd leg telescopic material of the wire that the 1st leg telescopic material that above-mentioned leg pars contractilis possesses the banding on the said goods width with specific length is short with the length being arranged on the said goods width of the above-mentioned 1st leg telescopic material of length ratio in the 1st telescopic material configuring area being configured with above-mentioned 1st leg telescopic material and on the said goods width
The position of skin bearing surface side is being leaned on to be provided with the sheeting of the non-telescoping engaged with above-mentioned 1st leg telescopic material and/or above-mentioned 2nd leg telescopic material than above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material,
Percentage elongation on the said goods length direction of above-mentioned 2nd leg telescopic material is higher than the percentage elongation on the said goods length direction of above-mentioned 1st leg telescopic material,
End on the said goods length direction of above-mentioned 2nd leg telescopic material is arranged in than the end on the said goods length direction of above-mentioned 1st leg telescopic material by the position inside product length direction.
2. disposable diaper according to claim 1, wherein,
Above-mentioned 2nd leg telescopic material configures along the medial end on the said goods width of above-mentioned 1st leg telescopic material.
3. disposable diaper according to claim 1 and 2, wherein,
The percentage elongation of above-mentioned 1st leg telescopic material is 1.4 times��2.2 times,
The percentage elongation of above-mentioned 2nd leg telescopic material is 1.7 times��2.5 times.
4. disposable diaper according to claim 1 and 2, wherein,
Above-mentioned 2nd leg telescopic material is arranged in the non-skin bearing surface side of above-mentioned 1st leg telescopic material.
5. disposable diaper according to claim 1 and 2, wherein,
Above-mentioned 2nd leg telescopic material is arranged in than the center on the said goods width of above-mentioned 1st leg telescopic material by the position inside above-mentioned product width direction.
6. disposable diaper according to claim 1 and 2, wherein,
The sheeting of multiple non-telescoping it is laminated with in the non-skin bearing surface side of above-mentioned leg pars contractilis,
Than the number of plies of above-mentioned sheeting of the side, forward waist area, center on the said goods length direction of above-mentioned leg pars contractilis more than the number of plies of the above-mentioned sheeting of side, waist area rearward, the center on the said goods length direction than above-mentioned leg pars contractilis.
7. disposable diaper according to claim 1 and 2, wherein,
This disposable diaper possess be arranged in than above-mentioned leg pars contractilis by the position inside above-mentioned product width direction and have can along the leg side pars contractilis of the erecting of the flexible contraction flow region of the said goods length direction,
Above-mentioned leg pars contractilis is arranged in than the base end part erected of above-mentioned leg side pars contractilis by the position outside above-mentioned product width direction.
8. disposable diaper according to claim 1 and 2, wherein,
Medial end on the said goods width of above-mentioned 1st leg telescopic material and the outboard end on the said goods width of above-mentioned 1st leg telescopic material configure side by side.
9. the manufacture method of an absorbent commodity, it installs the 1st leg telescopic material constituting the leg pars contractilis along the configuration of leg-openings portion and the 2nd leg telescopic material under the building block continuous print state constituting disposable diaper on tablet of conveying, it is characterized in that
This manufacture method has following operation:
Conveying operation, carries the above-mentioned 1st leg telescopic material of continuous print banding and the above-mentioned 2nd leg telescopic material of continuous print wire respectively;
Elongation operation, when making above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material converge, makes above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material extend along conveying direction;
Swing operation, make the above-mentioned 1st leg telescopic material of elongation state and the 2nd leg telescopic material carry along the crisscross displacement orthogonal with conveying direction;
Cut off operation, cut off above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material according to product length; And
Adhering processes, is pasted onto on above-mentioned tablet by the above-mentioned 1st leg telescopic material after cut-off and above-mentioned 2nd leg telescopic material,
In above-mentioned conveying operation, when the percentage elongation making the above-mentioned 2nd leg telescopic material percentage elongation along conveying direction elongation and above-mentioned 2nd leg telescopic material be higher than above-mentioned 1st leg telescopic material, carry above-mentioned 1st leg telescopic material and the 2nd leg telescopic material.
10. the manufacture method of absorbent commodity according to claim 9, it is characterised in that
In above-mentioned elongation operation, when above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material being engaged, above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material is made to extend along conveying direction.
CN201380022333.8A 2012-04-27 2013-04-25 The manufacture method of disposable diaper and disposable diaper Active CN104254308B (en)

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US4657539A (en) * 1985-04-26 1987-04-14 The Procter & Gamble Company Waste containment garment having elasticized barrier wall leg flaps

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JPH0398831U (en) * 1990-01-31 1991-10-15
AU687745B2 (en) * 1992-08-28 1998-03-05 Procter & Gamble Company, The Absorbent article with elastic feature having a prestrained web portion and method for forming same
JP3808056B2 (en) * 2002-07-26 2006-08-09 花王株式会社 Easy-to-wear diapers from either front or back
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US4657539A (en) * 1985-04-26 1987-04-14 The Procter & Gamble Company Waste containment garment having elasticized barrier wall leg flaps

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