CN104254308A - Disposable diaper and method for producing disposable diaper - Google Patents

Disposable diaper and method for producing disposable diaper Download PDF

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Publication number
CN104254308A
CN104254308A CN201380022333.8A CN201380022333A CN104254308A CN 104254308 A CN104254308 A CN 104254308A CN 201380022333 A CN201380022333 A CN 201380022333A CN 104254308 A CN104254308 A CN 104254308A
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CN
China
Prior art keywords
mentioned
leg
telescopic material
leg telescopic
pars contractilis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201380022333.8A
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Chinese (zh)
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CN104254308B (en
Inventor
坂口智
石川慎一
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Unicharm Corp
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Unicharm Corp
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Publication of CN104254308A publication Critical patent/CN104254308A/en
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Publication of CN104254308B publication Critical patent/CN104254308B/en
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • 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)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

This disposable diaper (10) is provided with a leg extension/contraction section that can extend/contract along the product lengthwise direction and is disposed along a leg-encircling opening section provided at the outside in the product widthwise direction with respect to an absorbent body. The leg extension/contraction section is provided with: a band-shaped first leg extension/contraction material (76); and a thread-shaped second leg extension/contraction material (77) that is disposed within a first extension/contraction material disposing region at which the first leg extension/contraction material has been disposed, and that has a shorter length in the product widthwise direction compared to the first leg extension/contraction material. A non-extending/-contracting side flap (70) is provided to the skin-contacting surface side with respect to the first leg extension/contraction material and/or the second leg extension/contraction material. The elongation rate in the product lengthwise direction of the second leg extension/contraction material is higher than the elongation rate in the product lengthwise direction of the first leg extension/contraction 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, be known to a kind of such disposable diaper: there is front waist area, rear waist area and lower crotch region, be formed with pair of leg and enclose 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 tablet constituent material that the leg pars contractilis of the disposable diaper of patent documentation 1 utilizes the compound sheet thing etc. such as material, Flexible film, flexible non-woven fabrics that can be stretched by rubber, elastomeric material etc. to form is formed.This tablet constituent material has specific length on product width direction, can spread all over and integrally stretch.Thus, the leg-openings portion of disposable diaper encloses along the lower limb of wearer and configures with planar.
Prior art document
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 will solve
But, in above-mentioned disposable diaper, there is following problem points.
Leg pars contractilis is consisted of the tablet constituent material of the upper stickup retractility of sheeting (forming the sheeting of surficial sheets, back-sheet) in non-telescoping, due to the contraction of tablet constituent material, the sheeting of non-telescoping also shrinks.Thus, sometimes on the sheeting of non-telescoping, form fold, producing skin due to fold stimulates.
In addition, because 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 formed with by the elastic component of wire, the sheeting of more large-area non-telescoping is shunk.Thus, be likely formed in fold on the sheeting of non-telescoping and become many or fold becomes greatly and the stimulation grow of skin for wearer compared with the elastic component of wire.
Therefore, namely the present invention completes in view of above-mentioned problem, and its object is to provide a kind of can enclose along the lower limb of wearer with planar configuration and the manufacture method that can suppress disposable diaper for the stimulation of skin and disposable diaper.
for the scheme of dealing with problems
Disposable diaper of the present disclosure (disposable diaper 10) has front waist area (front waist area 20), rear waist area (rear waist area 30), 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 orthogonal with product length direction (product width direction W), this disposable diaper possesses to be crossed over above-mentioned lower crotch region and configures and the leg pars contractilis (leg pars contractilis 75) that can stretch along the said goods length direction than the leg-openings portion of above-mentioned absorber by the position outside above-mentioned product width direction towards at least any one absorber (absorber 40) extended above-mentioned front waist area and above-mentioned rear waist area with along being located at from above-mentioned lower crotch region, its purport is, above-mentioned leg-openings portion and above-mentioned leg pars contractilis extend outside the said goods length direction along with from above-mentioned lower crotch region outside the said goods width, above-mentioned leg pars contractilis possess the band shape on the said goods width with specific length the 1st leg telescopic material (the 1st leg telescopic material 76) and be configured in be configured with above-mentioned 1st leg telescopic material the 1st telescopic material configuring area in and the 2nd leg telescopic material (the 2nd leg telescopic material 77) of length on the said goods width wire shorter than the length on the said goods width of above-mentioned 1st leg telescopic material, 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 disposable diaper of the present disclosure is forming the 1st leg telescopic material and the 2nd leg telescopic material of the tablet carried under the building block continuous print state of disposable diaper being installed the leg pars contractilis that formation configures along leg-openings portion, its purport is, this manufacture method has following operation: conveying operation, carries the above-mentioned 1st leg telescopic material of continuous print band shape and the above-mentioned 2nd leg telescopic material of continuous print wire respectively; Extend operation, under the state making above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material converge, above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material are extended along throughput direction; Swing operation, the above-mentioned 1st leg telescopic material of elongation state and the 2nd leg telescopic material are carried along the crisscross displacement orthogonal with throughput 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, make above-mentioned 2 leg telescopic materials along throughput direction elongation and under the state of the percentage elongation of above-mentioned 2nd leg telescopic material higher than the percentage elongation of above-mentioned 1st leg telescopic material, carrying 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 is the figure representing the state disposable diaper of present embodiment being dressed in wearer.
Fig. 5 is the side view of the manufacturing installation of the absorbent commodity representing embodiment.
Detailed description of the invention
Then, the embodiment of disposable diaper of the present invention is described with reference to accompanying drawing.In addition, in the record of the following drawings, identical or similar Reference numeral is marked to identical or similar part.But accompanying drawing is schematic, should notice that ratio of each size etc. is different from the ratio of reality.
Thus, concrete size etc. should be judged with reference to the following description.In addition, the relation of size each other, part that ratio is different can also be comprised each other at accompanying drawing.
(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.In addition, expansion top view shown in Fig. 1 is the figure of state when leg pars contractilis 75 and leg side rivel 80 being stretched to form the positive dough sheet 50, flank 70 etc. of disposable diaper 10 not form the state of fold, but for convenience of explanation, illustrate 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 parts contacted with the frontal cowl of wearer (abdominal section).In addition, rear waist area 30 is the parts 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 disposable diaper 10, be formed with pair of leg 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 of enclosing configuration under the state being dressed in wearer at disposable diaper along the lower limb of wearer.
In 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 crosses over lower crotch region 25 and from lower crotch region towards at least any one absorber 40 extended 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 disposable diaper in the past, can use the known component such as comminution pulp, high absorption polymer, material suitably forms.Absorbent core 40a is coated by the core covering 40b of lamellar.Core covering 40b is the sheet material of coated absorbent core 40a.Core covering 40b is at least made up of the various fabric nonwoven cloth or tissue sheet sheet (tissue sheet) with liquid permeability by a part for skin side.Such as, grammes per square metre can be used to be about 10g/m 2~ 30g/m 2hot blast fabric nonwoven cloth, spun bond nonwoven fabric, SMS (spunbond-melt blown-spunbond) non-woven fabrics or grammes per square metre be about 10g/m 2~ 30g/m 2tissue sheet sheet.
The positive dough sheet 50 of liquid permeability is possessed in the face side (skin bearing surface side) of absorber 40.In addition, liquid-impermeable back sheet 60a is possessed in the rear side (non-skin bearing surface side) of absorber 40.
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 multiple overlaps of more than 1 or 2.In addition, 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 remains on the health of wearer by anchoring at the non-skin bearing surface of front waist area 20 by it.
In the present embodiment, waistline maintaining part is formed by front waist area 20, rear waist area 30 and magic tape 90.The waistline maintaining part of rear waist area 20 is the scopes 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 the scopes extended in the width direction from the region being provided with target portion 95.
In addition, disposable diaper 10 possesses and is formed in lower crotch region 25 and can along the flexible crotch pars contractilis 200a of product length direction L.Specifically, crotch pars contractilis 200a is configured in the crotch 200 being formed at lower crotch region 25.In 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 the surrounding being formed in leg-openings portion 35 and a pair leg pars contractilis 75 that can stretch along product length direction L.
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.In addition, in the structure of aftermentioned middle detailed description leg pars contractilis 75.
In addition, possess in the inner side (position by central authorities on the W of product width direction) of a pair leg pars contractilis 75 a pair leg side rivel 80 extended along product length direction L.Leg side rivel 80 is located at the medial end on the product width direction of flank 70, is to be configured in than the flexible rivel of leg pars contractilis by the erecting of the position inside product width direction.Leg side rivel 80 is configured in than leg pars contractilis 75 by the position inside product width direction, plays function as leg side pars contractilis.
The medial end of flank 70 on product width direction turns back to surficial sheets side, its two-layer laminate.Elastic component 71 (with reference to Fig. 3) is provided with the state of extending along its length between the flank 70 that this is 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 the elastic component 71 of leg side rivel 80 shrinks, the expansion top view of the disposable diaper shown in Fig. 2 represent the elastic component 71 of leg side rivel 80 extend after state.
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, forms contraction flow region 84.To be base end part when wearing with bonding part 81 erect leg side rivel 80, and the contraction flow region 84 of free end portion 82 is as the contact skin of apex and wearer.That is, bonding part becomes the base end part erected of leg side pars contractilis.
In addition, contraction flow region 84 is the parts utilizing elastic component 71 to shrink along product length direction in fact, is the concept except the part except being configured with elastic component 71 under the state not playing contractility.In addition, in Fig. 2 in leg side rivel, the bonding part 81 that is bonded to flank 70 and positive dough sheet 50 marks oblique line to represent.
Bonding part 81 is provided with multiple, and the 1st bonding part 81A is configured in than contraction flow region 84 by the position outside product length direction, and the 2nd bonding part 81B is configured 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 to edge-on of wearer.
In the bonding part 81 of leg side rivel 80, be configured in and be configured between crotch pars contractilis 200a and leg pars contractilis 75 on the W of product width direction than contraction flow region 84 the 2nd bonding part 81B by the position outside product width direction.2nd bonding part 81B engages with back sheet 60a in the total length in product length direction.In addition, back sheet 60a is configured between absorber 40 and covering sheet material 60, plays function as leakproof sheet material.
In the bonding part 81 of leg side rivel 80, be configured in and engage with positive dough sheet 50 than contraction flow region 84 the 1st bonding part 81A by the position outside product length direction.
In 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 with the part of front chip bonding, also can 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.
In addition, as long as leg side rivel is configured in than the rivel of leg pars contractilis by the erecting inside product width direction, be not limited to said structure, the structure that can adopt well-known leg side rivel is in the past self-evident.
In addition, product width direction is provided with the waistline pars contractilis 85 that can stretch along product width direction between a pair magic tape.Waistline pars contractilis 85 is configured in when overlooking between a pair magic tape, shrinks in the width direction between magic tape.Waistline pars contractilis 85 is configured 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 forming waistline pars contractilis 85 is not particularly limited, but preferably uses the thinner and material that flexural rigidity is lower, contracting amplitude-frequency is less as far as possible.In the present embodiment, as waistline pars contractilis 85, applying unit area weight is 20g/m 2~ 45g/m 2retractility film.
Waistline pars contractilis 85, after 1.5 times ~ 2.5 times of length of being stretched to non-elongate state (naturalness), 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 configured between covering sheet material 60 and back sheet 60a.But reach than absorbent core 40a by the structure outside product length direction at core covering 40b, waistline pars contractilis 85 also can be configured 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 than the position of absorber 40 by non-skin bearing surface side.In addition, also can be configured in and do not configure between in the region of absorber, flank 70 and back sheet 60a or covering sheet material 60.
In addition, the waistline pars contractilis of present embodiment is configured to flexible along product width direction, but also can 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 along being located at than the leg-openings portion 35 of absorber 40 by the position outside product width direction, can stretch along product length direction L.Leg-openings portion 35 and leg pars contractilis 75 position had on width are arranged in the width inner end region 75I of the inner side of lower crotch region, extend outside product length direction along with from lower crotch region 25 outside product width direction.In addition, the width inner end region 75I of leg pars contractilis 75 both can configure continuously on product length direction, also can not be continuous in product length direction.
The leg pars contractilis 75 of present embodiment possesses the 2nd leg telescopic material 77 of length on the 1st leg telescopic material 76 of the band shape on product width direction with specific length and the product width direction wire shorter than the length on the product width direction of the 1st leg telescopic material 76.
1st leg telescopic material 76 is made up of Stretchable sheet.Such as, as this Stretchable sheet, such as, can use membranaceous retractility film thermoplastic elastomer resin melting such to polyurethane, styrene made, the flexible nonwoven fabrics be made up of contractile fibre, on retractility film, flexible nonwoven fabrics, paste composite sheet etc. by partial cutoff or the crisp non-stretch sheet material weakened.
In addition, also can form the 1st leg telescopic material 76 by configuring the elastic component of band shape that be made up of polyurethane elastomeric fiber, natural rubber and substitute this Stretchable sheet.
1st leg telescopic material 76 is configured between flank 70 and covering sheet material 60.Or in the region possessing the back sheet 60a be configured between absorber 40 and covering sheet material 60, the 1st leg telescopic material 76 is configured between back sheet 60a and flank 70.
The width of Stretchable sheet at least in lower crotch region 25 forming the 1st leg telescopic material 76 is 5mm (width on the product width direction W under the naturalness of disposable diaper 10) ~ 45mm, is more preferably 12.5mm ~ 35mm.If above-mentioned width is less than 5mm, then do not find in fact enclose along the lower limb of wearer with face and avoid the power of tying tight to concentrate partly thus reduce flexible member for the such effect of the load of skin, if above-mentioned width is greater than 45mm, then compared with the length on the product width direction of disposable diaper entirety, become 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.In addition, the meaning of percentage elongation refers to and the elongation degree of the 1st leg telescopic material 76 or the 2nd leg telescopic material 77 specifies as follows.
Percentage elongation=(length of the 1st leg telescopic material under elongation state) ÷ (length of the 1st leg telescopic material under naturalness) of 1st leg telescopic material, or
Percentage elongation=(length of the 2nd leg telescopic material under elongation state) ÷ (length of the 2nd leg telescopic material under naturalness) of 2nd leg telescopic material
In addition, in this manual, such as this percentage elongation is measured as follows.
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 the position of 0.5mm ~ 1.0mm is sheared along the 2nd leg telescopic material outside the product width direction to the 2nd leg telescopic material.Measure be only shear after the percentage elongation of sample of the 1st leg telescopic material, the percentage elongation of measurement the 1st leg telescopic material.In addition, the percentage elongation of the sample of the 2nd leg telescopic material after comprising shearing is measured, 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 from naturalness the state cannot estimating the fold that confirmation is caused by elastic component on non-telescoping sheet material.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 ".
Carry out calculating by utilizing these measurement results with above-mentioned formula and measure percentage elongation.
In addition, the interval between the medial extremity on the product width direction W of pair of right and left leg pars contractilis 75 broadens towards front waist area 20 along with from lower crotch region 25, and broadens towards rear waist area 30 along with from lower crotch region 25.When diaper being dressed in the health of wearer, narrower and towards the waistline of front and back and the shape broadened by leg pars contractilis being configured at lower crotch, 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.In addition, this interval is by widening disposable diaper 10 from naturalness along product length direction L and product width direction W as not having the state of fold and distance between the medial extremity measuring the product width direction W of pair of right and left leg pars contractilis 75 after keeping and obtaining.
The skin surface of the health of wearer to extend in buttocks large especially, comparatively remarkable by the position outside its width.In addition, 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 can keep snugly stretching, even if the variable quantity stretched is comparatively large, leg pars contractilis 75 also can not eject.Thus, can suppress to cause disposable diaper 10 to misplace by leg pars contractilis 75.
2nd leg telescopic material 77 is configured in and is configured with in the 1st telescopic material configuring area of 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.In addition, the percentage elongation of percentage elongation higher than the 1st leg telescopic material 76 of the 2nd leg telescopic material 77 is configured to.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 configured between the 1st leg telescopic material 76 and covering sheet material 60.In addition, when not possessing covering sheet material 60, also can be configured between the 1st leg telescopic material 76 and back sheet 60a.
In addition, the 2nd leg telescopic material 77 of present embodiment is configured 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 also can be configured in the skin bearing surface side of the 1st leg telescopic material 76.Under the state of skin bearing surface side that the 2nd leg telescopic material 77 is configured in the 1st leg telescopic material 76, the lateral plate material as the sheeting of non-telescoping is configured in the skin bearing surface side of the 1st leg telescopic material 76 and the 2nd leg telescopic material 77.
In addition, the state being configured in the non-skin bearing surface side of the 1st leg telescopic material 76 refer to not only comprise the state abutted with the non-skin bearing surface of the 1st leg telescopic material 76, the concept of state that the non-skin bearing surface side being also contained in the 1st leg telescopic material 76 configures indirectly relative to the 1st leg telescopic material 76.Further, the state being configured in the skin bearing surface side of the 1st leg telescopic material 76 refer to not only comprise the state abutted with the skin bearing surface of the 1st leg telescopic material 76, the concept of state that the skin bearing surface side being also contained in the 1st leg telescopic material 76 configures indirectly relative to the 1st leg telescopic material 76.
But if the 2nd leg telescopic material to be configured in the skin bearing surface side of the 1st leg telescopic material, then the part utilizing the 2nd leg telescopic material to shrink is easy to contact skin, for the stimulation likely grow of skin.Thus, preferably, the 2nd leg telescopic material is configured in the non-skin bearing surface side of the 1st leg telescopic material, adopts this structure, can prevent the part utilizing the 2nd leg telescopic material to shrink from directly contacting skin.
And, more preferably, 1st leg telescopic material 76 is configured in skin bearing surface side, and the 2nd leg telescopic material 77 is configured in non-skin bearing surface side, 1st leg telescopic material 76 and non-telescoping sheet material be discontinuous with bond pattern each other and the bond pattern of being interrupted (such as, utilize spiral coating etc. jointly to there is bonding agent non-there is portion and bonding agent there is the such application pattern in portion) engage, on the other hand, 2nd leg telescopic material with continuous print bond pattern (such as, the slit coating that picture carries out for rubber covered wire, with rubber covered wire exist painting limit (Japanese: ビ ー ド Tu work) that portion matches like that bonding agent there is portion's continuous print application pattern) engage.
Thus, the feel of skin bearing surface side can be made more soft and relax the stimulation for skin, and the 2nd leg of the wire of non-skin bearing surface side stretches, material can engage with the sheet material of the 1st leg telescopic material continuously, therefore, also can reduce the fold produced due to the 2nd leg telescopic material further, the stimulation for skin can be relaxed.
In addition, leg pars contractilis 75 is the parts utilizing Stretchable sheet etc. to shrink along product length direction in fact, is the concept except the part except being configured with Stretchable sheet under the state not playing contractility.
Fig. 4 schematically represents that dress has the figure of the state of the disposable diaper of embodiment, is the figure seen from the front of 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, because the 1st leg telescopic material is banded, therefore, it is possible to the lower limb that the leg-openings portion 35 of disposable diaper is configured in wearer with planar is placed.
In addition, owing to being configured with the 2nd leg telescopic material 77 of the width wire narrower than the 1st leg telescopic material 76, the percentage elongation of the 2nd leg telescopic material 77 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, because the percentage elongation of the 1st leg telescopic material 76 larger with the contact area of skin is lower, therefore, it is possible to suppress the fold as leg pars contractilis 75 entirety of the 1st telescopic material configuring area.
By arranging the 1st leg telescopic material and the 2nd leg telescopic material simultaneously, can utilize the 2nd leg telescopic material 77 that the lateral plate material of non-telescoping is shunk partly, suppress leg pars contractilis 75 entirety to produce fold, and utilize the 1st leg telescopic material 76 to enclose along the lower limb of wearer to configure whole leg pars contractilis 75 with planar.
In addition, because the medial end of the 2nd leg telescopic material along the product width direction of the 1st leg telescopic material configures, therefore, the outboard end of enclosing on the product width direction of the 1st leg telescopic material at closely sealed position as the lower limb with wearer can be suppressed excessively closely sealed, can reduce by the stimulation of leg-openings portion for skin.
Further, in order to reduce the stimulation of leg-openings portion for skin, it is desirable that, the 2nd leg telescopic material is configured in center, product width direction than the 1st leg telescopic material by the position inside product width direction.The position of shrinking 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 shrinks more consumingly 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 the position that the lower limb being more sealed at wearer compared with the position with end in the inner part encloses, therefore, by near medial end position configuration the 2nd leg telescopic material, can suppress leg-openings portion more consumingly with contact skin.
Thus, can be starting point with the 2nd leg telescopic material 77 than the 2nd leg telescopic material 77 by the part outside width fits in wearer.By the position in the outer part on the product width direction of the 1st leg telescopic material 76 is obtained broader, the state that the lower limb that can more be sealed at wearer while can being set to the length (width) maintained at leg pars contractilis 75 on product width direction encloses, therefore, it is possible to improve the stickiness of leg pars contractilis 75 for wearer.
Outboard end on the product width direction of the medial end on the product width direction of the 1st leg telescopic material and the 1st leg telescopic material configures 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, therefore, it is possible to the mode enclosing to contact in the same area along the lower limb of wearer configures leg pars contractilis 75.
End on the product length direction of the 2nd leg telescopic material also can be configured 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 end on the product length direction of the 1st leg telescopic material and the 2nd leg telescopic material is become the part of shrinking basic point respectively, the non-telescoping portion adjacent due to the Thickness Ratio at this position is large, therefore, gap is produced between the lower limb when wearing sometimes this position and wearer encloses.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 grow of this part, the thickness difference of non-telescoping portion and pars contractilis likely becomes larger.
So bad in order to eliminate, preferably, end dislocation 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, and, by the 2nd higher for percentage elongation telescopic material is configured in inside length direction, periodically can shrink, the fold caused by the contraction of local can be suppressed.
Back sheet 60a and the covering sheet material 60 of non-telescoping 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 is along the configuration of leg-openings portion, and whole of leg pars contractilis overlapping in a thickness direction with covering sheet material 60.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.
Part due to the front waist area of leg pars contractilis is positioned at the position inside width compared with the part of rear waist area, and therefore, the region that the part of front waist area is overlapping with back sheet 60a compared with the part of side, rear waist area becomes large.
In addition, leg pars contractilis 75 is configured in the 2nd bonding part 81B than leg side rivel by the position outside product width direction.It is basic point to edge-on of wearer that leg side rivel to be configured to than the 2nd bonding part 81B by the contraction flow region 84 inside width with the 2nd bonding part 81B.
Such as, if be configured with leg pars contractilis 75 than the 2nd bonding part 81B by inside width, then sometimes utilize leg pars contractilis 75 to erect than the 2nd bonding part 81B by inside width, contraction flow region 84 is erecting outside width.If contraction flow region 84 erects outside width, then body fluid likely leaks into outside width.But by configuring leg pars contractilis 75 than the 2nd bonding part 81B by outside width side, contraction flow region 84 is being easy to edge-on of wearer.
(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 when the wearing of disposable diaper compared with other parts of absorber 40.Crotch 200 has the crotch pars contractilis 200a that at least can stretch along 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 and shrink more than 60% of the width length of the absorbent core 40a of the position of this overlap in the position (being the position between the core covering 40b of coated absorbent core 40a and back sheet 60a in the present embodiment) overlapping with absorbent core 40a.Like this, by the portion retracts utilizing crotch pars contractilis 200a to make to be configured with absorbent core 40a, absorbent core 40a reduces, and is easy to maintain smooth shape with absorbent core 40a compared with the part do not reduced.
On the other hand, being positioned to be in does not utilize crotch pars contractilis 200a to shrink than crotch pars contractilis 200a by the front waist area of position outside product length direction, the absorbent core 40a of rear waist area, therefore, under state around the waist waistline remaining on wearer utilizing magic tape, exceedingly health can not be sealed at the crotch 200 of smooth shape maintains at the lower crotch of disposable diaper, as a result, crotch 200 moderately configures along health.
In addition, because crotch 200 can be stretched along product length direction L, therefore, front waist area 20 and rear waist area 30 are easy to erect because of the contraction of crotch 200, form smooth lower crotch region when wearing at the huckle of wearer along health.Because 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 being configured with the region of Stretchable sheet similarly reduces, and more easily maintains smooth shape.In addition, Stretchable sheet such as can be made up of the Stretchable sheet same with leg pars contractilis 75.
In addition, also can form crotch pars contractilis 200a by configuring the elastic component of many wire band shapes be made up of polyurethane elastomeric fiber, natural rubber, substituting and forming crotch pars contractilis 200a by this Stretchable sheet.In this case, in order to utilize crotch pars contractilis 200a to make absorbent core 40a similarly reduce, preferably elastic component interval being each other set to below 7mm, being more preferably below 5mm.In addition, in order to make absorbent core 40a similarly reduce, the difference at the interval between adjacent elastic component is expected for below 2mm.
In addition, preferably, 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.The meaning of percentage elongation refers to the telescopic level in the telescopic direction (product length direction L) of crotch pars contractilis 200a, as following provisions.
The meaning of percentage elongation refers to the telescopic level in the telescopic direction (being product length direction L in the present embodiment) of crotch pars contractilis 200a, as following provisions.
Percentage elongation=(length in the telescopic direction of the crotch pars contractilis 200a at utmost under extended configuration)/(length in the telescopic direction of the crotch pars contractilis 200a under naturalness)
In addition, in this manual, such as this percentage elongation is measured as follows.
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 from naturalness the state cannot estimated and confirm the fold caused by elastic component.Using this length as " length in the telescopic direction of the crotch pars contractilis 200a at utmost under extended configuration ".Carry out calculating by utilizing these measurement results with above-mentioned formula and measure percentage elongation.
Like this, by the expansion and contraction of crotch pars contractilis 200a is set to 1.2 times ~ 1.8 times, the flexible of the skin of wearer suitably can be followed.
Such as, if wearer takes to roll up so anteflexion posture on front side of health, then in the skin of the buttocks side of wearer, there is the position relative to the state of body line up being extended about 30%.
That is, if make the expansion and contraction of crotch pars contractilis 200a be less than 1.2 times, the contraction of the crotch pars contractilis 200a then under naturalness is insufficient, compared with the situation of crotch pars contractilis 200a is not set, the contraction of the absorbent body area of the huckle of disposable diaper 10 is less, in the huckle of wearer, become insufficient with the degree obtaining even shape along the mode of health.
On the other hand, if make the expansion and contraction of crotch pars contractilis 200a be greater than 1.8 times, contraction on the shrinkage direction of then crotch pars contractilis 200a is oversize, therefore, the region that there is crotch pars contractilis 200a is easy to become and state more closely sealed compared with health, and disposable diaper 10 is easy to misplace to the below of wearer.
In addition, 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 mode of crossing over the center on the product length direction L of disposable diaper 10.
In this case, the rigidity suitably rugosity of the elastic component of choice for use, the spacing of configuration of the rigidity can considering absorbent core 40a and other components forming disposable diaper 10, but preferably, when disposable diaper 10 main body being 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.
In addition, breach 115 (breach 125) is formed with at the lower crotch region 25 of absorber 40.Breach 115 and breach 125 are the regions that there is not the absorbent core 40a forming absorber 40.In the present embodiment, breach 115 and breach 125 are equivalent to the weight per unit area of the absorbent core 40a low rigid portion lower than other parts of absorbent core 40a.In addition, the weight per unit area that the region of breach 115 and breach 125 also can be made to be formed as absorbent core 40a substitutes lower than other parts of absorbent core 40a and forms breach 115 and breach 125.
Breach 115 and breach 125 exist along the edge part on the product length direction L of crotch 200.In addition, preferably, even if be formed with breach 115 and breach 125, the absorbent core 40a being positioned at front waist area 20 and rear waist area 30 and the absorbent core 40a being positioned at lower crotch region 25 are also particularly cut in the direction of the width continuously and not completely.
Breach 115 and breach 125 are along with the length outside the W of product width direction on the L of product length direction.Utilize such shape, be easier to reduce outside the product width direction W of absorbent core 40a, therefore, more easily formed smooth " bottom ".In addition, the absorbent core 40a and being positioned at being positioned at the position of waist area 20 more forward than breach 115 erects from " bottom " than the absorbent core 40a of breach 125 position of waist area 30 rearward, be easy to the curved of the health (abdominal part and buttocks) along wearer, therefore, himself shape of disposable diaper can more close to the shape of wearer's body.
In addition, 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 be centrally located at than this edge part position of waist area 30 (front waist area 20) rearward of circular arc.Utilize such shape, be 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.In addition, the method do not illustrated in the present embodiment can use existing method.In addition, the manufacture method below illustrated is an example, and other manufacture method also can be utilized to manufacture.The manufacture method of absorbent commodity at least comprises 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 forming absorbent commodity.Specifically, such as, stacked absorbing material and molding absorber 40.
In building block mounting operation, the building block that mounting forms the 1st leg telescopic material 76 of leg pars contractilis 75 on the tablet forming back sheet, the 2nd leg telescopic material 77, other the tablet, leakproof sheet material, absorber etc. such as tablet that form positive dough sheet form disposable diaper 10.
Lower limb encloses formation process and cuts off positive dough sheet 50 and covering sheet material 60 etc. along the recess forming lower limb region.Thus, the leg-openings portion 35 that the lower limb that formation is configured in wearer is placed.
Cut off in operation at continuum, by the size being configured with positive dough sheet 50, covering sheet material 60, absorber 40 and the 1st leg telescopic material 76, the continuum of the 2nd leg telescopic material 77 to cut into a product along width W.Thus, disposable diaper 10 is manufactured.
Then, in above-mentioned manufacture method, the structure of the manufacturing installation of absorbent commodity that uses in the building block mounting operation of configuration leg pars contractilis 75 is described in detail.Fig. 5 is the side view of the manufacturing installation 100 of the absorbent commodity representing embodiment.The manufacturing installation 100 of absorbent commodity has feed mechanism 110, swing mechanism 120, guide 130, shut-off mechanism 140, set up an organization 150, adhesive applicating mechanism 160.The manufacturing installation 100 of this absorbent commodity is forming the device tablet carried under the building block continuous print state of absorbent commodity being installed the leg pars contractilis 75 carried continuously.
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 band shape and the 2nd leg telescopic material 77 of continuous print wire respectively.
In elongation operation, under the state utilizing feed mechanism 110 and swing mechanism 120 to make the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 converge, the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 are extended along throughput direction.In the present embodiment, be configured to make the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 converge and engage, under state upon engagement, make the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 extend along throughput direction.
Specifically, at the 2nd leg telescopic material 77 carrying the state after extending along throughput direction than feed mechanism 110 by throughput direction upstream side continuously.Be configured to utilize adhesive applicating mechanism 160 adhesive-applying on the 2nd leg telescopic material 77.Adhesive applicating mechanism 160 is devices 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 extending for the percentage elongation lower than the 2nd leg telescopic material 77), the percentage elongation of the 2nd leg telescopic material 77 can be made higher than the percentage elongation of the 1st leg telescopic material 76.
In addition, also can not on the 2nd leg telescopic material 77 adhesive-applying, 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 shorter, the coating amount of bonding agent can be suppressed.In addition, difference adhesive-applying on the 1st leg telescopic material 76 and the 2nd leg stretch drug 77 can be also configured to.
Then, utilize feed mechanism 110 to carry the 1st leg telescopic material 76 and the 2nd leg telescopic material 77, the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 are sent towards swing mechanism 120.Feed mechanism 110 possesses the 1st rotating mechanism 111, the 1st roller 112, band member 113, niproll 114.1st rotating mechanism 111 is configured to the 1st rotating shaft 111a that to be centre of gyration make lower limb enclose elastic component carries along outer peripheral face to throughput direction MD.In addition, be configured with band member 113 at the outer peripheral face of the 1st rotating mechanism 111, the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 are transferred via the outer peripheral face of band member 113 along the 1st rotating mechanism 111.
1st roller 112 is configured in than the position of the 1st rotating mechanism 111 by the upstream side of throughput direction MD.Band member 113 is bands of the ring-type of convolution between the 1st rotating mechanism 111 and the 1st roller 112.Band member 113 is utilized to carry under 1st leg telescopic material 76 and the state of the 2nd leg telescopic material 77 on the outer peripheral face being connected to band member 113.The outer peripheral face of niproll 114 and the 1st rotating mechanism 111 relatively configures.1st leg telescopic material 76 and the 2nd leg telescopic material 77 pass through between band member 113 and niproll 114.
1st rotating mechanism 111 and the 1st roller 112 rotate to the counter clockwise direction shown in Fig. 5, and band member 113 moves widdershins.1st leg telescopic material 76 and the 2nd leg telescopic material 77, after being transported to the 1st rotating mechanism side from the 1st roller side, are transferred from the outer peripheral face of the 1st rotating mechanism the 2nd rotating mechanism 121 separately and towards swing mechanism 120.
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 76 and the 2nd leg telescopic material 77 are configured to utilize the speed difference of the 1st rotating mechanism 111 and the 2nd rotating mechanism 121 to extend along throughput direction in the process being directed into the 2nd rotating mechanism 121 from the 1st rotating mechanism 111.The 1st leg telescopic material 76 of the 1st rotating mechanism conveying and the 2nd leg telescopic material 77 is utilized to be configured to the percentage elongation of 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 when arrival the 2nd rotating mechanism 121 is configured to also higher than the percentage elongation of the 1st leg telescopic material 76.
In addition, in the present embodiment, be configured to utilize feed mechanism 110 to carry leg pars contractilis 75, but also can be configured to do not possess feed mechanism 110, and after by the 1st leg telescopic material and the bonding of the 2nd leg telescopic material, leg pars contractilis 75 is directed to swing mechanism 120.
In swing operation, utilize swing mechanism 120 that the 1st leg telescopic material 76 of elongation state and the 2nd leg telescopic material 77 are carried along the crisscross displacement orthogonal with throughput direction.Swing mechanism 120 has the 2nd rotating mechanism 121, the 3rd rotating mechanism 122, armite 123.To be centre of gyration with the 2nd rotating shaft 121a carry supplying the leg pars contractilis come from the 1st rotating mechanism 111 along outer peripheral face 2nd rotating mechanism 121, carries towards the 4th rotating mechanism 131 described later.
2nd rotating mechanism 121 is linked to the 3rd rotating mechanism 122 rotated centered by the 3rd rotating shaft 122a by armite 123.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.By the 3rd rotating mechanism 122 rotary actuation, the 2nd rotating mechanism 121 swings to the width orthogonal with throughput direction MD.1st leg telescopic material 76 and the 2nd leg telescopic material 77 are sent towards guide 130 by the 2nd rotating mechanism 121 while swinging to width with the cycle of regulation.Leg telescopic material is transferred along width displacement towards guide 130, and the 1st leg telescopic material 76 sent out from swing mechanism 120 and the 2nd leg telescopic material 77 are configured in the outer peripheral face of guide 130 with curve-like.
Guide 130 has the 4th rotating mechanism the 131,4th rotating mechanism 131 and maintains and supply the shape of the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 come from swing mechanism 120 and the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 150 to be sent towards setting up an organization.4th rotating mechanism 131 has multiple retaining member (not shown), by retaining member conveying the 1st leg telescopic material 76 and the 2nd leg telescopic material 77.
Leg cuts off operation and utilizes shut-off mechanism 140 to cut off the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 according to product length.Shut-off mechanism 140 cuts off the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 on each retaining member.What the 1st leg telescopic material 76 utilizing shut-off mechanism 140 to cut off and the 2nd leg telescopic material 77 became the leg pars contractilis 75 of each product arranges length.
In adhering processes, utilizing sets up an organization 150 is pasted onto the 1st cut-off leg telescopic material 76 and the 2nd leg telescopic material 77 on tablet.Setting up an organization and 150 possess multiple roller, by clamping building block between the rolls, each building block being engaged.Specifically, such as, the 1st leg telescopic material 76 utilizing shut-off mechanism 140 to cut off and the 2nd leg telescopic material 77 are arranged on discontinuously on the covering sheet material tablet 60W of conveying covering sheet material 60 continuously.Utilize above operation, leg pars contractilis 75 can be configured on tablet.
Set up an organization 150 after the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 are bonded on covering sheet material tablet paste 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.Like this, disposable diaper continuous print continuum on the L of product length direction is formed.Then, continuum is cut into the size of a product along product width direction W.Thus, disposable diaper 10 is manufactured.
In addition, in the present embodiment, outside mounting material tablet 60W is provided with leg pars contractilis 75, but be not limited to this structure, in the absorbent commodity with lateral plate material, both can configure leg pars contractilis 75 on the tablet forming lateral plate material, and also can configure lower limb on other tablet and enclose elastic component.
In addition, in the present embodiment, carry under the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 state upon engagement, but the 1st leg telescopic material 76 and the 2nd leg telescopic material 77 also can be configured to carry mutually under asynthetic state, make them extend separately or swing.
Further, both can carry out leg after swing operation and cut off operation, also can carry out swing operation after leg cuts off operation.
Enclose 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, the leg-openings portion 35 that the lower limb that formation is configured in wearer is placed.
Cut off in operation at continuum, the continuum being configured with positive dough sheet 50, back sheet 60a, absorber 40 etc. is cut into the size of a product along product width direction W.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, can utilize the 2nd leg telescopic material 77 that the lateral plate material of non-telescoping is shunk partly, suppress leg pars contractilis 75 entirety to produce fold, and utilize the 1st leg telescopic material 76 to enclose along the lower limb of wearer to configure whole leg pars contractilis 75 with planar.
In addition, because 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 be positioned at than the 1st leg telescopic material, therefore, the outboard end of enclosing on the product width direction of the 1st leg telescopic material at closely sealed position as the lower limb with wearer can be suppressed excessively closely sealed, can reduce by the stimulation of leg-openings portion for skin.
Due to the consistent length on the product width direction of the 1st leg telescopic material, therefore, it is possible to the mode enclosing to contact in the same area along the lower limb of wearer configures leg pars contractilis 75, leg pars contractilis 75 can be prevented to be sealed at lower limb partly and to enclose.
Because the 2nd leg telescopic material 77 is configured in the non-skin bearing surface side of the 1st leg telescopic material 76, therefore, the part utilizing the 2nd leg telescopic material to shrink is difficult to directly contact skin.The stimulation for skin caused by fold can be reduced.
Leg pars contractilis 75 is configured in the 2nd bonding part 81B than leg side rivel by the position outside product width direction.Such as, if be configured with leg pars contractilis 75 than the 2nd bonding part 81B by inside width, then sometimes utilize leg pars contractilis 75 to erect than the 2nd bonding part 81B by inside width, contraction flow region 84 is erecting outside width.But by configuring leg pars contractilis 75 than the 2nd bonding part 81B by outside width side, contraction flow region 84 is being easy to edge-on of wearer.
(6) other embodiments
As mentioned above, disclose content of the present invention by embodiments of the present invention, but form the discussion of a part of the disclosure and accompanying drawing and should not be 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 also along the 1st leg telescopic material configuration, also can not configure on local misalignment ground.
Length on the product width direction of the 1st leg telescopic material also can be constant, and the length local that also can be configured on product width direction is different.
Outboard end on the product length direction of the 1st leg telescopic material also can be consistent with the outboard end on the product length direction of the 2nd leg telescopic material.
Leg pars contractilis 75 also can be consistent with the bonding part of leg side rivel on product width direction, also can be configured in bonding part than leg side rivel by the position inside product width direction.
In addition, in the above-described embodiment, be illustrated for the disposable diaper of style of opening, but the present invention also can be applied to the disposable diaper of Briefs type.There is waistline peristome and pair of leg is enclosed in the underwear shape diaper of peristome 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, 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, and is remained on the waistline of wearer by disposable diaper by making these elastic components contract.That is, the scope engaged along the edge, the left and right sides that product length direction L extends becomes waistline maintaining part.
Like this, self-evident, the present invention is included in this various embodiments etc. do not recorded.Thus, protection scope of the present invention is only determined by the technical characteristic of rational claims according to the above description.
In addition, the full content of No. 2012-103412, Japan's patent application (application on April 27th, 2012) is by referring to being incorporated into this case description.
utilizability in industry
Can provide a kind of can enclose along the lower limb of wearer with planar configuration and the disposable diaper that can suppress the stimulation for skin.
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; The end of the side, front waist area of 75F, leg pars contractilis; The width inner end region of 75I, leg pars contractilis; The end of the rear waist area of 75R, leg pars contractilis; 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 (11)

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 possesses to be crossed over above-mentioned lower crotch region and configures and the leg pars contractilis that can stretch along the said goods length direction than the leg-openings portion of above-mentioned absorber by the position outside above-mentioned product width direction towards at least any one absorber extended above-mentioned front waist area and above-mentioned rear waist area with along being located at from above-mentioned lower crotch region, wherein
Above-mentioned leg-openings portion and above-mentioned leg pars contractilis extend outside the said goods length direction along with from above-mentioned lower crotch region outside the said goods width,
Above-mentioned leg pars contractilis possess the band shape on the said goods width with specific length the 1st leg telescopic material and be configured in be configured with above-mentioned 1st leg telescopic material the 1st telescopic material configuring area in and the 2nd leg telescopic material of length on the said goods width wire shorter than the length on the said goods width of above-mentioned 1st leg telescopic material
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.
2. disposable diaper according to claim 1, wherein,
Above-mentioned 2nd leg telescopic material is along the medial end configuration 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. the disposable diaper according to any one of claims 1 to 3, wherein,
Above-mentioned 2nd leg telescopic material is configured in the non-skin bearing surface side of above-mentioned 1st leg telescopic material.
5. the disposable diaper according to any one of Claims 1 to 4, wherein,
End on the said goods length direction of above-mentioned 2nd leg telescopic material is configured in than the end on the said goods length direction of above-mentioned 1st leg telescopic material by the position inside product length direction.
6. the disposable diaper according to any one of Claims 1 to 5, wherein,
Above-mentioned 2nd leg telescopic material is configured 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.
7. the disposable diaper according to any one of claim 1 ~ 6, wherein,
The sheeting of multiple non-telescoping is laminated with in the non-skin bearing surface side of above-mentioned leg pars contractilis,
Than the number of plies of the 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 of the center on the said goods length direction than above-mentioned leg pars contractilis.
8. the disposable diaper according to any one of claim 1 ~ 7, wherein,
This disposable diaper possesses to be configured in and has the leg side pars contractilis of the erecting of the contraction flow region that can stretch along the said goods length direction than above-mentioned leg pars contractilis by the position inside above-mentioned product width direction,
Above-mentioned leg pars contractilis is configured in the base end part erected than above-mentioned leg side pars contractilis by the position outside above-mentioned product width direction.
9. the disposable diaper according to any one of claim 1 ~ 8, wherein,
Outboard end on the said goods width of the medial end on the said goods width of above-mentioned 1st leg telescopic material and above-mentioned 1st leg telescopic material configures side by side.
10. the manufacture method of an absorbent commodity, it is forming the 1st leg telescopic material and the 2nd leg telescopic material of the tablet carried under the building block continuous print state of disposable diaper being installed the leg pars contractilis that formation configures along leg-openings portion, it is characterized in that
This manufacture method has following operation:
Conveying operation, carries the above-mentioned 1st leg telescopic material of continuous print band shape and the above-mentioned 2nd leg telescopic material of continuous print wire respectively;
Extend operation, under the state making above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material converge, above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material are extended along throughput direction;
Swing operation, the above-mentioned 1st leg telescopic material of elongation state and the 2nd leg telescopic material are carried along the crisscross displacement orthogonal with throughput 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, make above-mentioned 2 leg telescopic materials along throughput direction elongation and under the state of the percentage elongation of above-mentioned 2nd leg telescopic material higher than the percentage elongation of above-mentioned 1st leg telescopic material, carrying above-mentioned 1st leg telescopic material and the 2nd leg telescopic material.
The manufacture method of 11. absorbent commodities according to claim 10, is characterized in that,
In above-mentioned elongation operation, under the state above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material engaged, above-mentioned 1st leg telescopic material and above-mentioned 2nd leg telescopic material are extended along throughput 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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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4657539A (en) * 1985-04-26 1987-04-14 The Procter & Gamble Company Waste containment garment having elasticized barrier wall leg flaps
JPH0398831U (en) * 1990-01-31 1991-10-15

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE177931T1 (en) * 1992-08-28 1999-04-15 Procter & Gamble ABSORBENT ARTICLE HAVING AN ELASTIC ELEMENT HAVING A PRE-STRETCHED TISSUE PART
JP3808056B2 (en) * 2002-07-26 2006-08-09 花王株式会社 Easy-to-wear diapers from either front or back
JP4693530B2 (en) * 2005-07-12 2011-06-01 花王株式会社 Disposable diaper and method for producing the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4657539A (en) * 1985-04-26 1987-04-14 The Procter & Gamble Company Waste containment garment having elasticized barrier wall leg flaps
JPH0398831U (en) * 1990-01-31 1991-10-15

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