WO2014054565A1 - Manufacturing method for stretch laminate and device - Google Patents
Manufacturing method for stretch laminate and device Download PDFInfo
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- WO2014054565A1 WO2014054565A1 PCT/JP2013/076503 JP2013076503W WO2014054565A1 WO 2014054565 A1 WO2014054565 A1 WO 2014054565A1 JP 2013076503 W JP2013076503 W JP 2013076503W WO 2014054565 A1 WO2014054565 A1 WO 2014054565A1
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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
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15585—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
- A61F13/15593—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons
-
- 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
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/144—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers using layers with different mechanical or chemical conditions or properties, e.g. layers with different thermal shrinkage, layers under tension during bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
- B65H23/025—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers
- B65H23/0258—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers with a bowed axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
- B65H37/04—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations for securing together articles or webs, e.g. by adhesive, stitching or stapling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/02—Folding limp material without application of pressure to define or form crease lines
- B65H45/06—Folding webs
- B65H45/08—Folding webs longitudinally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2555/00—Personal care
- B32B2555/02—Diapers or napkins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/13—Details of longitudinal profile
- B65H2404/131—Details of longitudinal profile shape
- B65H2404/1314—Details of longitudinal profile shape convex
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/13—Details of longitudinal profile
- B65H2404/131—Details of longitudinal profile shape
- B65H2404/1317—End profile
- B65H2404/13171—End profile tapered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/57—Diaper manufacture
Definitions
- the present invention relates to a method and apparatus for producing a stretch laminate.
- Disposable diapers and pants employ a structure in which stretchable laminates are arranged on the side panels and the main body so that the diapers and the like fit the trunk.
- a spiral elastic member is fed by a conveyor belt between a pair of tapes sandwiched between nip rolls in a direction crossing the tape transport direction, and the elastic member is interposed between the pair of tapes.
- a method of sandwiching and fixing between the two is known (Patent Document 1).
- the elastic member is cut on both sides of the conveyance mechanism and the laminated sheet is removed from the conveyance mechanism.
- the side edges of one of the two sheets are folded in advance and folded after being sandwiched.
- JP63-243309A (Fig. 7) JP2001-518061A
- an object of the present invention is to provide a method and an apparatus for producing a stretchable laminate that can smoothly fold both side edges of a sheet that has been folded once.
- the method of the present invention is a method for producing a stretchable laminate in which a plurality of linear elastic members extending in the width direction crossing the sheet conveying direction are arranged between a first sheet and a second sheet, and expand and contract in the width direction.
- a method A step of folding both side edges of the first sheet along the conveying direction to form a folded portion, and the folding portion is not sandwiched between the first sheet and the second sheet in this step.
- the composite is conveyed while contacting the surface opposite to the one sheet, and the central portion of the composite contracts in the width direction as the central portion of the elastic member contracts.
- a folding roll for folding the sheet so that each folded portion overlaps each side edge along the conveying direction of the second sheet.
- the method further includes a step of joining the folded portion of the first sheet and both side edges of the second sheet.
- FIG. 1 shows an apparatus for manufacturing the stretch laminate W.
- the elastic member F is continuously wound spirally around the two sets of conveyor belts 1A and 1B in a state where tension is applied to the elastic member F, that is, the elastic member F is stretched, and then toward the downstream. Be transported.
- an adhesive may be applied from the applicator 7 to the surface of the second sheet S2 facing the first sheet S1 shown in FIG.
- the applicator 7 is disposed upstream of the second nip roll 42 (upstream of the nip position O).
- the applicator 7 applies a linear adhesive that is parallel to each other and extends in the transport direction to the surface of the second sheet S2.
- the folding roll 8 conveys the composite W1 while contacting the second sheet S2, and as the central portion Fc of the elastic member F contracts, the central portion Wc of the composite W1 moves in the width direction.
- the folded portion Sf of the first sheet S1 is folded back toward both side edges in the width direction Y of the folded roll 8 as shown in FIG. 7B, and both side edge portions Se of the second sheet S2. Overlapping.
- the stretch laminate W shown in FIGS. 9A and 9B is generated.
- the manufacturing method of the expansion-contraction laminated body W is demonstrated. Both side edges Se along the conveying direction of the first sheet S1 in FIG. In the step of folding the side edge portions Se of the first sheet S1, as shown in FIG. 8A, the folded portion Sf is not sandwiched between the first sheet S1 and the second sheet S2. The first sheet S1 is folded back. That is, the folded portion Sf is folded back so that the folded portion Sf overlaps the surface Ss in contact with the first nip roll 41.
- the adhesive D is applied from the applicator 7 to the central portion Sc of the second sheet S2 of FIG. 8A.
- the elastic member F is supplied between the two sheets S1 and S2 in a state where the first part F1 and the second part F2 of the elastic member F are separated from each other in the transport direction X.
- the first part F1 and the second part F2 are supplied between the two sheets S1 and S2 while being separated from each other in the thickness direction Z of the sheets S1 and S2 shown in FIG. 8A.
- the stretchable laminate W as shown in FIGS. 9A and 9B is generated.
- the elastic member F and the central portions Fc and Wc of the composite W1 contract as shown in FIG. 9B.
- one or both of the sheets S1 and S2 may be discontinuous sheets instead of continuous sheets.
- a plurality of sets of the present manufacturing apparatus may be provided in parallel.
- the pair of sheets may be welded instead of being bonded.
- the elastic member may be melted and cut.
- the first part and the second part of the elastic member do not need to be parallel to each other, and may be arranged on the sheet while being inclined obliquely.
- a plurality of elastic member lead-out portions may be provided in the spinner, and a plurality of elastic members may be led out from the spinner.
- the length in the width direction Y of each of the pair of nip rolls 41 and 42 may be reduced, and the nip position O may be positioned between the two sets of conveyor belts 1A and 1B.
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- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The present invention is a manufacturing method for a stretch laminate (W) which stretches and contracts in a width direction (Y), upon which a plurality of linear elastic members (F) are disposed so as to extend in the width direction (Y) between a first sheet (S1) and a second sheet (S2) across a transport direction (X) of the sheets (S1 and S2), wherein the method is provided with a step in which: on the surface of a folded-back roll (8) which becomes of smaller diameter toward both ends from the center of the width direction (Y), a complex (W1) is transported while coming into tactile contact with the surface on the opposite side of the first sheet (S1) in the second sheet (S2) of the complex (W1), whereupon, by the central portion (Wc) of the complex (W1) shrinking in the width direction (Y) so as to accompany shrinking of the central portion (Fc) of the elastic member (F), the folded-back portions (Sf) of the first sheet (S1) are folded back so as to overlap both side edge portions (Se) of the second sheet (S2).
Description
本発明は伸縮積層体の製造方法および装置に関するものである。
The present invention relates to a method and apparatus for producing a stretch laminate.
使い捨てオムツやパンツにおいてはサイドパネルや本体部に伸縮積層体を配置して前記
オムツ等が胴にフィットする構造を採用している。かかる伸縮積層体の製造方法として、ニップロールで挟まれる一対のテープの間に前記テープの搬送方向に交差する方向に螺線状の弾性部材をコンベヤベルトで送り込み、その弾性部材を前記一対のテープ間で挟んで固定する方法が知られている(特許文献1)。 Disposable diapers and pants employ a structure in which stretchable laminates are arranged on the side panels and the main body so that the diapers and the like fit the trunk. As a method for producing such a stretchable laminate, a spiral elastic member is fed by a conveyor belt between a pair of tapes sandwiched between nip rolls in a direction crossing the tape transport direction, and the elastic member is interposed between the pair of tapes. A method of sandwiching and fixing between the two is known (Patent Document 1).
オムツ等が胴にフィットする構造を採用している。かかる伸縮積層体の製造方法として、ニップロールで挟まれる一対のテープの間に前記テープの搬送方向に交差する方向に螺線状の弾性部材をコンベヤベルトで送り込み、その弾性部材を前記一対のテープ間で挟んで固定する方法が知られている(特許文献1)。 Disposable diapers and pants employ a structure in which stretchable laminates are arranged on the side panels and the main body so that the diapers and the like fit the trunk. As a method for producing such a stretchable laminate, a spiral elastic member is fed by a conveyor belt between a pair of tapes sandwiched between nip rolls in a direction crossing the tape transport direction, and the elastic member is interposed between the pair of tapes. A method of sandwiching and fixing between the two is known (Patent Document 1).
また、弾性部材を2枚のシートで挟み込んだ後、搬送機構の両側で弾性部材を切断し、搬送機構から積層シートを取り外すのであるが、切断された弾性部材の収縮した端部を覆うために、2枚のシートの一方のシートの両側縁部を予め折り返しておき、挟み込み後に折り戻すことが行われている。
In addition, after sandwiching the elastic member between the two sheets, the elastic member is cut on both sides of the conveyance mechanism and the laminated sheet is removed from the conveyance mechanism. In order to cover the contracted end of the cut elastic member The side edges of one of the two sheets are folded in advance and folded after being sandwiched.
しかし、一度折り返したシートの両側縁部を折り戻すことは難しい。
However, it is difficult to fold back both side edges of the folded sheet.
したがって、本発明の目的は一度折り返したシートの両側縁部の折り戻しを円滑に行うことのできる伸縮積層体の製造方法および装置を提供することである。
Accordingly, an object of the present invention is to provide a method and an apparatus for producing a stretchable laminate that can smoothly fold both side edges of a sheet that has been folded once.
本発明方法は、第1シートと第2シートとの間に前記シートの搬送方向を横切る幅方向に延びる線状の複数本の弾性部材が配置されて前記幅方向に伸縮する伸縮積層体の製造方法であって、
前記第1シートの前記搬送方向に沿う両側縁部を折り返して折り返し部を形成する工程と、この工程において前記折り返し部が前記第1シートと第2シートとの間に挟まれないように前記第1シートを折り返し、
二組のコンベヤベルトに張架状態で前記弾性部材を螺旋状に巻回する工程と、
前記第1シートにおける前記折り返されていない非折り返し部と前記第2シートとの間に前記弾性部材を挟んで、前記2枚のシートおよび前記弾性部材の幅方向の中央部分を互いに貼り合わせて複合体を形成する工程と、
前記複合体における前記弾性部材の前記第1および第2シートからはみ出した部分において前記弾性部材を切断する工程と、
前記複合体の搬送方向に直交する方向に延びる軸線を有し、前記幅方向の中央から両端に向かって径小となる2つの部位を有する折り戻しロールの表面に、前記複合体の前記第2シートにおける前記第1シートと反対側の面を接触させながら前記複合体を搬送して、前記弾性部材の中央部分が収縮するのに伴い前記複合体の中央部分が前記幅方向に収縮することで、前記第1シートの各折り返し部が前記第2シートの前記搬送方向に沿う各側縁部に重なるように折り戻される工程とを備える。 The method of the present invention is a method for producing a stretchable laminate in which a plurality of linear elastic members extending in the width direction crossing the sheet conveying direction are arranged between a first sheet and a second sheet, and expand and contract in the width direction. A method,
A step of folding both side edges of the first sheet along the conveying direction to form a folded portion, and the folding portion is not sandwiched between the first sheet and the second sheet in this step. Fold one sheet,
A step of spirally winding the elastic member in a stretched state on two sets of conveyor belts;
The elastic member is sandwiched between the unfolded portion of the first sheet that is not folded and the second sheet, and the two sheets and the central portion in the width direction of the elastic member are bonded together to form a composite Forming a body;
Cutting the elastic member at a portion of the elastic member protruding from the first and second sheets of the elastic member;
On the surface of a folding roll having an axis extending in a direction orthogonal to the conveyance direction of the complex and having two portions that are reduced in diameter from the center in the width direction toward both ends, the second of the complex The composite is conveyed while contacting the surface of the sheet opposite to the first sheet, and the central portion of the composite contracts in the width direction as the central portion of the elastic member contracts. And a step of folding each folded portion of the first sheet so as to overlap each side edge portion along the transport direction of the second sheet.
前記第1シートの前記搬送方向に沿う両側縁部を折り返して折り返し部を形成する工程と、この工程において前記折り返し部が前記第1シートと第2シートとの間に挟まれないように前記第1シートを折り返し、
二組のコンベヤベルトに張架状態で前記弾性部材を螺旋状に巻回する工程と、
前記第1シートにおける前記折り返されていない非折り返し部と前記第2シートとの間に前記弾性部材を挟んで、前記2枚のシートおよび前記弾性部材の幅方向の中央部分を互いに貼り合わせて複合体を形成する工程と、
前記複合体における前記弾性部材の前記第1および第2シートからはみ出した部分において前記弾性部材を切断する工程と、
前記複合体の搬送方向に直交する方向に延びる軸線を有し、前記幅方向の中央から両端に向かって径小となる2つの部位を有する折り戻しロールの表面に、前記複合体の前記第2シートにおける前記第1シートと反対側の面を接触させながら前記複合体を搬送して、前記弾性部材の中央部分が収縮するのに伴い前記複合体の中央部分が前記幅方向に収縮することで、前記第1シートの各折り返し部が前記第2シートの前記搬送方向に沿う各側縁部に重なるように折り戻される工程とを備える。 The method of the present invention is a method for producing a stretchable laminate in which a plurality of linear elastic members extending in the width direction crossing the sheet conveying direction are arranged between a first sheet and a second sheet, and expand and contract in the width direction. A method,
A step of folding both side edges of the first sheet along the conveying direction to form a folded portion, and the folding portion is not sandwiched between the first sheet and the second sheet in this step. Fold one sheet,
A step of spirally winding the elastic member in a stretched state on two sets of conveyor belts;
The elastic member is sandwiched between the unfolded portion of the first sheet that is not folded and the second sheet, and the two sheets and the central portion in the width direction of the elastic member are bonded together to form a composite Forming a body;
Cutting the elastic member at a portion of the elastic member protruding from the first and second sheets of the elastic member;
On the surface of a folding roll having an axis extending in a direction orthogonal to the conveyance direction of the complex and having two portions that are reduced in diameter from the center in the width direction toward both ends, the second of the complex The composite is conveyed while contacting the surface of the sheet opposite to the first sheet, and the central portion of the composite contracts in the width direction as the central portion of the elastic member contracts. And a step of folding each folded portion of the first sheet so as to overlap each side edge portion along the transport direction of the second sheet.
一方、本発明装置は、第1シートと第2シートとの間に前記シートの搬送方向を横切る幅方向に延びる線状の複数本の弾性部材が配置されて前記幅方向に伸縮する伸縮積層体の製造装置であって、
前記第1シートの前記搬送方向に沿う両側縁部を折り返し当該折り返した折り返し部が前記第1シートと第2シートとの間に挟まれないように前記第1シートの折り返しを実行するセーラと、
前記弾性部材の前記幅方向に互いに離間した二組のコンベヤベルトと、
前記二組のコンベヤベルトに張架状態で前記弾性部材を螺旋状に巻回するスピンナと、
前記第1シートにおける前記折り返されていない非折り返し部と前記第2シートの間に前記弾性部材を挟んで、前記2枚のシートおよび前記弾性部材の幅方向の中央部分を互いに貼り合わせて複合体を形成する一対のニップロールと、
前記複合体における前記弾性部材の前記第1および第2シートからはみ出した部分において前記弾性部材を切断するカッターと、
前記複合体の搬送方向に直交する方向に延びる軸線を有し、前記幅方向の中央から両端に向かって径小となる2つの部位を有し表面に前記複合体の前記第2シートにおける前記第1シートと反対側の面を接触させながら前記複合体を搬送して、前記弾性部材の中央部分が収縮するのに伴い前記複合体の中央部分が前記幅方向に収縮することで、前記第1シートの各折り返し部が前記第2シートの前記搬送方向に沿う各側縁部に重なるように折り戻すための折り戻しロールとを備える。 On the other hand, the apparatus of the present invention is a stretchable laminate in which a plurality of linear elastic members extending in the width direction crossing the sheet conveyance direction are arranged between the first sheet and the second sheet, and expand and contract in the width direction. Manufacturing equipment,
A sailor that folds back the first sheet so that the folded portion that is folded back on both side edges along the conveying direction of the first sheet is not sandwiched between the first sheet and the second sheet;
Two sets of conveyor belts spaced apart from each other in the width direction of the elastic member;
A spinner for spirally winding the elastic member in a stretched state on the two sets of conveyor belts;
A composite body in which the elastic member is sandwiched between the non-folded portion of the first sheet that is not folded and the second sheet, and the two sheets and a central portion in the width direction of the elastic member are bonded together. A pair of nip rolls forming
A cutter that cuts the elastic member at a portion of the elastic member that protrudes from the first and second sheets of the elastic member;
It has an axis extending in a direction perpendicular to the conveyance direction of the composite, and has two parts that become smaller in diameter from the center in the width direction toward both ends. The composite is conveyed while contacting the surface opposite to the one sheet, and the central portion of the composite contracts in the width direction as the central portion of the elastic member contracts. And a folding roll for folding the sheet so that each folded portion overlaps each side edge along the conveying direction of the second sheet.
前記第1シートの前記搬送方向に沿う両側縁部を折り返し当該折り返した折り返し部が前記第1シートと第2シートとの間に挟まれないように前記第1シートの折り返しを実行するセーラと、
前記弾性部材の前記幅方向に互いに離間した二組のコンベヤベルトと、
前記二組のコンベヤベルトに張架状態で前記弾性部材を螺旋状に巻回するスピンナと、
前記第1シートにおける前記折り返されていない非折り返し部と前記第2シートの間に前記弾性部材を挟んで、前記2枚のシートおよび前記弾性部材の幅方向の中央部分を互いに貼り合わせて複合体を形成する一対のニップロールと、
前記複合体における前記弾性部材の前記第1および第2シートからはみ出した部分において前記弾性部材を切断するカッターと、
前記複合体の搬送方向に直交する方向に延びる軸線を有し、前記幅方向の中央から両端に向かって径小となる2つの部位を有し表面に前記複合体の前記第2シートにおける前記第1シートと反対側の面を接触させながら前記複合体を搬送して、前記弾性部材の中央部分が収縮するのに伴い前記複合体の中央部分が前記幅方向に収縮することで、前記第1シートの各折り返し部が前記第2シートの前記搬送方向に沿う各側縁部に重なるように折り戻すための折り戻しロールとを備える。 On the other hand, the apparatus of the present invention is a stretchable laminate in which a plurality of linear elastic members extending in the width direction crossing the sheet conveyance direction are arranged between the first sheet and the second sheet, and expand and contract in the width direction. Manufacturing equipment,
A sailor that folds back the first sheet so that the folded portion that is folded back on both side edges along the conveying direction of the first sheet is not sandwiched between the first sheet and the second sheet;
Two sets of conveyor belts spaced apart from each other in the width direction of the elastic member;
A spinner for spirally winding the elastic member in a stretched state on the two sets of conveyor belts;
A composite body in which the elastic member is sandwiched between the non-folded portion of the first sheet that is not folded and the second sheet, and the two sheets and a central portion in the width direction of the elastic member are bonded together. A pair of nip rolls forming
A cutter that cuts the elastic member at a portion of the elastic member that protrudes from the first and second sheets of the elastic member;
It has an axis extending in a direction perpendicular to the conveyance direction of the composite, and has two parts that become smaller in diameter from the center in the width direction toward both ends. The composite is conveyed while contacting the surface opposite to the one sheet, and the central portion of the composite contracts in the width direction as the central portion of the elastic member contracts. And a folding roll for folding the sheet so that each folded portion overlaps each side edge along the conveying direction of the second sheet.
本発明において、折り戻しロールは幅方向の中央から両端に向かって径小となる2つの部位を有する表面を有し、複合体が前記折り戻しロールに接触しながら搬送される際に、前記弾性部材の中央部分が収縮するのに伴い前記複合体の中央部分が前記幅方向に収縮する。そのため、前記中央部分が収縮する方向とは逆の方向に前記第1シートの折り返し部が折り戻されて前記第2シートの両側縁部に重なる。したがって、折り返したシートの両側縁部の折り戻しを円滑に行うことができる。
In the present invention, the folding roll has a surface having two portions whose diameters are reduced from the center in the width direction toward both ends, and when the composite is conveyed while being in contact with the folding roll, the elastic roll As the central portion of the member contracts, the central portion of the composite contracts in the width direction. Therefore, the folded portion of the first sheet is folded back in a direction opposite to the direction in which the central portion contracts and overlaps both side edges of the second sheet. Therefore, both sides of the folded sheet can be smoothly folded back.
好ましい方法では、前記第1シートの折り戻された部分と前記第2シートの両側縁部とを互いに接合する工程を更に備える。
In a preferred method, the method further includes a step of joining the folded portion of the first sheet and both side edges of the second sheet.
また、好ましい装置では、前記第1シートの折り戻された部分と前記第2シートの両側縁部とを互いに接合する接合装置を更に備える。
Moreover, in a preferable apparatus, the apparatus further includes a joining device that joins the folded portion of the first sheet and both side edges of the second sheet.
これらの場合、伸縮積層体は両端が非伸縮で、中央部分が伸縮し、着用物品の使い易いパーツとして利用できるであろう。
In these cases, the stretch laminate will be non-stretchable at both ends, and the center portion will stretch, so that it can be used as an easy-to-use part of the worn article.
本発明は、添付の書類を参考にした以下の好的な実施例の説明からより明瞭に理解されるであろう。しかしながら、実施例および図面は単なる図示および説明のためのものであり、本発明の範囲を定めるために利用されるべきものではない。本発明の範囲は請求の範囲のみによって定まる。添付図面において、複数の図面における同一の部品番号は、同一または相当部分を示す。
The present invention will be understood more clearly from the following description of preferred embodiments with reference to the accompanying documents. However, the examples and figures are for illustration and description only and should not be used to define the scope of the present invention. The scope of the present invention is defined only by the claims. In the accompanying drawings, the same part numbers in a plurality of drawings indicate the same or corresponding parts.
以下、本発明の実施例が図面にしたがって説明される。
図1は伸縮積層体Wの製造装置を示す。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows an apparatus for manufacturing the stretch laminate W.
図1は伸縮積層体Wの製造装置を示す。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows an apparatus for manufacturing the stretch laminate W.
本実施例の伸縮積層体Wは一対のシートS1,S2の間に前記シートS1,S2の搬送方向Xを横切る幅方向Yに延びる線状の弾性部材F(F1,F2)が挟まれて、図9Cおよび図9Dに示すように、前記幅方向Yに伸縮する。なお、前記伸縮積層体Wは、例えば切断されることで使い捨てオムツやパンツのサイドパネルやウエストバンドとなる。
In the elastic laminate W of this embodiment, a linear elastic member F (F1, F2) extending in the width direction Y across the conveying direction X of the sheets S1, S2 is sandwiched between a pair of sheets S1, S2. As shown in FIG. 9C and FIG. 9D, it expands and contracts in the width direction Y. In addition, the said expansion-contraction laminated body W becomes a side panel and a waist band of a disposable diaper or pants by being cut | disconnected, for example.
図1において、前記シートS1,S2としては搬送方向Xに連続する連続ウエブであってもよいし、搬送方向Xに不連続のウエブや樹脂シートであってもよい。本実施例の場合、前記弾性部材Fは、いわゆる糸ゴムであるが、帯状のゴムであってもよい。
In FIG. 1, the sheets S1 and S2 may be continuous webs continuous in the transport direction X, or may be discontinuous webs or resin sheets in the transport direction X. In the case of the present embodiment, the elastic member F is a so-called thread rubber, but may be a belt-like rubber.
本製造装置はスピンナ2、コンベヤ1、一対のカッタC、第1および第2ニップロール41,42などを備える。前記コンベヤ1は、例えば4本の第1~第4のコンベヤベルト11~14および駆動装置3を備える。
The manufacturing apparatus includes a spinner 2, a conveyor 1, a pair of cutters C, first and second nip rolls 41 and 42, and the like. The conveyor 1 includes, for example, four first to fourth conveyor belts 11 to 14 and a driving device 3.
図2に明示するように、前記第1および第2コンベヤベルト11,12は上下に互いに接近して配置されている。また、第3および第4コンベヤベルト13,14は上下に互いに接近して配置されている。前記第1および2第コンベヤベルト11,12(第1組のコンベヤベルト1A)と第3および第4コンベヤベルト13,14(第2組のコンベヤベルト1B)とはニップロール41,42の幅方向Yに互いに離間して配置されている。
As clearly shown in FIG. 2, the first and second conveyor belts 11 and 12 are arranged close to each other in the vertical direction. The third and fourth conveyor belts 13 and 14 are arranged close to each other in the vertical direction. The first and second conveyor belts 11 and 12 (first set of conveyor belts 1A) and the third and fourth conveyor belts 13 and 14 (second set of conveyor belts 1B) are in the width direction Y of the nip rolls 41 and 42. Are spaced apart from each other.
前記スピンナ2は、駆動中の前記二組のコンベヤベルト1A,1Bに張架状態で前記弾性部材Fを螺旋状に巻回する。たとえば、前記スピンナ2はカップ状の本体20が図3の中空軸21の回りに回転し、前記中空軸21内を挿通された弾性部材Fが前記本体20内に配置した案内用の滑車22の先端から繰り出される。
The spinner 2 spirally winds the elastic member F in a stretched state on the two sets of conveyor belts 1A and 1B being driven. For example, the spinner 2 includes a guide pulley 22 in which a cup-shaped main body 20 rotates around a hollow shaft 21 in FIG. 3 and an elastic member F inserted through the hollow shaft 21 is disposed in the main body 20. It is fed out from the tip.
一方、図2の各コンベヤベルト11~14の外側面がシートSの搬送方向Xの下流に向かって回転している。そのため、弾性部材Fに張力が働いた状態、つまり弾性部材Fが伸張した状態で弾性部材Fは二組のコンベヤベルト1A,1Bに螺旋状に連続的に巻回された後に、下流に向かって搬送される。
On the other hand, the outer side surfaces of the conveyor belts 11 to 14 shown in FIG. For this reason, the elastic member F is continuously wound spirally around the two sets of conveyor belts 1A and 1B in a state where tension is applied to the elastic member F, that is, the elastic member F is stretched, and then toward the downstream. Be transported.
図1において、前記駆動装置3は、前記張架状態の弾性部材Fを前記コンベヤベルト11~14の搬送方向Xの下流に向かって搬送するために前記4本のコンベヤベルト11~14を回転させるためのものである。本実施例の場合、図5に示すように、弾性部材Fはコンベヤベルト11~14の上面および下面に接する。図2の前記コンベヤベルト11~14は、前記弾性部材Fの第1部F1と前記弾性部材Fの第2部F2とが前記シートSの厚さ方向Zに互いに離間した状態で、前記2枚のシートS1,S2および一対のニップロール41,42の間に前記弾性部材Fを供給する。また、弾性部材Fの第1部F1および第2部F2がニップロール41,42の軸方向Yと略平行になるように又は平行に近づくように、前記コンベヤベルト11~14の回転速度が制御される。
In FIG. 1, the driving device 3 rotates the four conveyor belts 11 to 14 in order to convey the stretched elastic member F toward the downstream in the conveying direction X of the conveyor belts 11 to 14. Is for. In the case of the present embodiment, as shown in FIG. 5, the elastic member F contacts the upper and lower surfaces of the conveyor belts 11-14. The conveyor belts 11 to 14 in FIG. 2 are configured so that the first part F1 of the elastic member F and the second part F2 of the elastic member F are separated from each other in the thickness direction Z of the sheet S. The elastic member F is supplied between the sheets S1 and S2 and the pair of nip rolls 41 and 42. Further, the rotational speeds of the conveyor belts 11 to 14 are controlled so that the first part F1 and the second part F2 of the elastic member F are substantially parallel to or close to the axial direction Y of the nip rolls 41 and 42. The
図4において、前記駆動装置3は制御装置5で制御される第1~第4モータM1~M4を有する。前記第1および第4モータM1,M4は、それぞれ、第1および第4コンベヤベルト11,14を高速度VHで回転駆動させる。一方、前記第2および第3モータM2,M3は、それぞれ、第2および第3コンベヤベルト12,13を高速度VHよりも小さい低速度VLで回転駆動させる。このコンベヤベルトの速度差により、図5の前記ニップロール41,42(図6)に挟まれる部位の弾性部材Fの前記第1部F1と第2部F2とがニップロール41,42(図6)の軸心に略平行になる。
なお、図4において、高速度VHで駆動されるベルト11,14には網点が施されている。 In FIG. 4, the drivingdevice 3 has first to fourth motors M1 to M4 controlled by a control device 5. The first and fourth motors M1 and M4 respectively rotate the first and fourth conveyor belts 11 and 14 at a high speed VH. On the other hand, the second and third motors M2 and M3 rotate and drive the second and third conveyor belts 12 and 13 at a low speed VL smaller than the high speed VH, respectively. Due to the difference in speed of the conveyor belt, the first part F1 and the second part F2 of the elastic member F at the portion sandwiched between the nip rolls 41 and 42 (FIG. 6) of FIG. It is almost parallel to the axis.
In FIG. 4, the belts 11 and 14 driven at the high speed VH are provided with halftone dots.
なお、図4において、高速度VHで駆動されるベルト11,14には網点が施されている。 In FIG. 4, the driving
In FIG. 4, the
図2において、第1ニップロール41の上流には周知のセーラ6が配置されている。このセーラ6は前記第1シートS1の両側縁部Seを折り返し当該折り返した折り返し部Sfが前記第1シートS1と第2シートS2との間に挟まれないように前記第1シートS1の折り返しを実行する。つまり、セーラ6は第1ニップロール41に向かって第1シートS1の両側縁部Seを折り返し、折り返し部Sfは第1ニップロール41と第1シートS1の非折り返し部Snとの間に挟まれる。換言すれば、前記折り返し部Sfは前記第1シートSの前記第1ニップロール41に接する面Ssに重なるように折り返される。
In FIG. 2, a known sailor 6 is disposed upstream of the first nip roll 41. The sailor 6 folds the side edges Se of the first sheet S1 and folds the first sheet S1 so that the folded portion Sf is not sandwiched between the first sheet S1 and the second sheet S2. Execute. That is, the sailor 6 folds the side edge portions Se of the first sheet S1 toward the first nip roll 41, and the folded portion Sf is sandwiched between the first nip roll 41 and the non-folded portion Sn of the first sheet S1. In other words, the folded portion Sf is folded so as to overlap the surface Ss of the first sheet S that is in contact with the first nip roll 41.
図9Aに明示するように前記折り返されていない状態の第1シートS1は第2シートS2と同じ幅である。本実施例の場合、図8Bの二点鎖線で示すように、第1ニップロール41の長さは第2ニップロール42よりも短く、二組のコンベヤベルト1A,1Bの間の空間内に入り込んでいる。一方、第2ニップロール42の長さは前記空間の幅よりも長く、コンベヤベルト11~14の下方に配置されている。
As clearly shown in FIG. 9A, the first sheet S1 in the unfolded state has the same width as the second sheet S2. In the case of the present embodiment, as shown by a two-dot chain line in FIG. 8B, the length of the first nip roll 41 is shorter than the second nip roll 42 and enters the space between the two sets of conveyor belts 1A and 1B. . On the other hand, the length of the second nip roll 42 is longer than the width of the space, and is disposed below the conveyor belts 11-14.
図6の前記第1および第2ニップロール41,42は、ニップ位置Oにおいて前記弾性部材F(図5)を前記一対のシートS1,S2の間で挟むと共に前記シートS1,S2に付着させて図8Cの複合体W1を形成する。すなわち、図2の一対のニップロール41,42は前記第1シートS1における前記折り返されていない非折り返し部Snと前記第2シートS2との間に前記弾性部材F(F1,F2)を挟んで、前記2枚のシートS1,S2および前記弾性部材Fの幅方向Yの中央部分を互いに貼り合わせて複合体W1を形成する。
The first and second nip rolls 41 and 42 in FIG. 6 sandwich the elastic member F (FIG. 5) between the pair of sheets S1 and S2 at the nip position O and attach the elastic members F to the sheets S1 and S2. 8C complex W1 is formed. That is, the pair of nip rolls 41 and 42 in FIG. 2 sandwich the elastic member F (F1, F2) between the non-folded non-folded portion Sn in the first sheet S1 and the second sheet S2, The two sheets S1, S2 and the central portion in the width direction Y of the elastic member F are bonded together to form a composite W1.
前記シートS1,S2に弾性部材Fを付着させる方法としては、図6に示す第2シートS2の第1シートS1に対面する表面に塗布機7から接着剤が塗布されてもよい。たとえば、前記第2ニップロール42の上流(ニップ位置Oの上流)には、塗布機7が配置されている。この塗布機7は第2シートS2の表面に互いに平行で、かつ、搬送方向に延びるライン状の接着剤を塗布する。
As a method of attaching the elastic member F to the sheets S1 and S2, an adhesive may be applied from the applicator 7 to the surface of the second sheet S2 facing the first sheet S1 shown in FIG. For example, the applicator 7 is disposed upstream of the second nip roll 42 (upstream of the nip position O). The applicator 7 applies a linear adhesive that is parallel to each other and extends in the transport direction to the surface of the second sheet S2.
図6のニップ点Oの若干下流には、図8Cの二点鎖線で示す一対のカッタC,Cが上下のコンベヤベルト11,12又は13,14間に入り込んだ状態で配置されている。なお、図6において前記カッタCの図示は省略している。
前記カッタCは前記複合体W1における前記弾性部材Fの前記第1および第2シートS1,S2からはみ出した部分において前記弾性部材Fを切断する。
なお、図8Cおよび図8Dに示すように、切断された弾性部材FのシートS1,S2に接着されていない部分、つまり両端部Feは張力が取り除かれて直ちに縮む。 A pair of cutters C and C indicated by a two-dot chain line in FIG. 8C are arranged slightly downstream of the nip point O in FIG. 6 so as to enter between the upper and lower conveyor belts 11 and 12 or 13 and 14. In FIG. 6, the cutter C is not shown.
The cutter C cuts the elastic member F at a portion of the elastic member F that protrudes from the first and second sheets S1 and S2 in the composite W1.
As shown in FIGS. 8C and 8D, the portions of the cut elastic member F that are not bonded to the sheets S1 and S2, that is, both end portions Fe are immediately contracted by removing the tension.
前記カッタCは前記複合体W1における前記弾性部材Fの前記第1および第2シートS1,S2からはみ出した部分において前記弾性部材Fを切断する。
なお、図8Cおよび図8Dに示すように、切断された弾性部材FのシートS1,S2に接着されていない部分、つまり両端部Feは張力が取り除かれて直ちに縮む。 A pair of cutters C and C indicated by a two-dot chain line in FIG. 8C are arranged slightly downstream of the nip point O in FIG. 6 so as to enter between the upper and
The cutter C cuts the elastic member F at a portion of the elastic member F that protrudes from the first and second sheets S1 and S2 in the composite W1.
As shown in FIGS. 8C and 8D, the portions of the cut elastic member F that are not bonded to the sheets S1 and S2, that is, both end portions Fe are immediately contracted by removing the tension.
図2および図5に示すように、一対のニップロール41,42の下流には折り戻しロール8が配置されている。
この折り戻しロール8は前記複合体W1の搬送方向Xに直交する幅方向Yに延びる軸線8cを有し、前記幅方向Yの中央から両端8eに向かって径小となり、図7Aのように、その表面に前記複合体W1の第2シートS2における第1シートS1と反対側の面に接触する。
すなわち、図2に示すように、折り返しロール8は両側縁においてテーパ状となった円筒面を有し、前記幅方向Yに沿った前記テーパ状の円筒面同士の間において軸線8cに対し平坦または緩やかに湾曲した円筒面を有する。
なお、本発明において折り返しロール8の幅方向Yの「中央」とは、折り返しロール8の幅方向Yの中心を含み、かつ、同ロール8の幅方向Yの両端を含まない領域を意味する。 As shown in FIGS. 2 and 5, afolding roll 8 is disposed downstream of the pair of nip rolls 41 and 42.
Thefolding roll 8 has an axis 8c extending in the width direction Y orthogonal to the conveyance direction X of the composite W1, and the diameter decreases from the center of the width direction Y toward both ends 8e, as shown in FIG. The surface of the second sheet S2 of the composite W1 is in contact with the surface opposite to the first sheet S1.
That is, as shown in FIG. 2, thefolding roll 8 has cylindrical surfaces tapered at both side edges, and is flat with respect to the axis 8 c between the tapered cylindrical surfaces along the width direction Y. It has a gently curved cylindrical surface.
In the present invention, the “center” in the width direction Y of thefolding roll 8 means a region that includes the center of the folding roll 8 in the width direction Y and does not include both ends of the roll 8 in the width direction Y.
この折り戻しロール8は前記複合体W1の搬送方向Xに直交する幅方向Yに延びる軸線8cを有し、前記幅方向Yの中央から両端8eに向かって径小となり、図7Aのように、その表面に前記複合体W1の第2シートS2における第1シートS1と反対側の面に接触する。
すなわち、図2に示すように、折り返しロール8は両側縁においてテーパ状となった円筒面を有し、前記幅方向Yに沿った前記テーパ状の円筒面同士の間において軸線8cに対し平坦または緩やかに湾曲した円筒面を有する。
なお、本発明において折り返しロール8の幅方向Yの「中央」とは、折り返しロール8の幅方向Yの中心を含み、かつ、同ロール8の幅方向Yの両端を含まない領域を意味する。 As shown in FIGS. 2 and 5, a
The
That is, as shown in FIG. 2, the
In the present invention, the “center” in the width direction Y of the
この折り戻しロール8は前記第2シートS2を接触させながら前記複合体W1を搬送して、前記弾性部材Fの中央部分Fcが収縮するのに伴い前記複合体W1の中央部分Wcが前記幅方向Yに収縮することで、前記第1シートS1の折り返し部Sfが図7Bのように前記折り返しロール8の幅方向Yの両側縁に向かって折り戻されて前記第2シートS2の両側縁部Seに重なる。こうして、図9Aおよび図9Bに示す伸縮積層体Wが生成される。
The folding roll 8 conveys the composite W1 while contacting the second sheet S2, and as the central portion Fc of the elastic member F contracts, the central portion Wc of the composite W1 moves in the width direction. By shrinking to Y, the folded portion Sf of the first sheet S1 is folded back toward both side edges in the width direction Y of the folded roll 8 as shown in FIG. 7B, and both side edge portions Se of the second sheet S2. Overlapping. Thus, the stretch laminate W shown in FIGS. 9A and 9B is generated.
図6に示すように、前記折り戻しロール8の更に下流には転向ロール10および接合装置9が配置されている。この接合装置9は図9Cのようにエンボス加工を施し、前記第1シートS1の折り戻された部分と前記第2シートS2の両側縁部Seとを互いに接合する。
As shown in FIG. 6, a turning roll 10 and a joining device 9 are arranged further downstream of the folding roll 8. The joining device 9 embosses as shown in FIG. 9C to join the folded portion of the first sheet S1 and the side edges Se of the second sheet S2.
つぎに、伸縮積層体Wの製造方法について説明する。
図1の第1シートS1の搬送方向に沿う両側縁部Seがセーラ6で折られる。この第1シートS1の両側縁部Seを折り返す工程において、図8Aに明示するように、当該折り返した折り返し部Sfが前記第1シートS1と第2シートS2との間に挟まれないように前記第1シートS1を折り返す。すなわち、第1ニップロール41に接する面Ssに前記折り返し部Sfが重なるように前記折り返し部Sfが折り返される。一方、図8Aの第2シートS2の中央部分Scに塗布機7から接着剤Dが塗布される。 Below, the manufacturing method of the expansion-contraction laminated body W is demonstrated.
Both side edges Se along the conveying direction of the first sheet S1 in FIG. In the step of folding the side edge portions Se of the first sheet S1, as shown in FIG. 8A, the folded portion Sf is not sandwiched between the first sheet S1 and the second sheet S2. The first sheet S1 is folded back. That is, the folded portion Sf is folded back so that the folded portion Sf overlaps the surface Ss in contact with thefirst nip roll 41. On the other hand, the adhesive D is applied from the applicator 7 to the central portion Sc of the second sheet S2 of FIG. 8A.
図1の第1シートS1の搬送方向に沿う両側縁部Seがセーラ6で折られる。この第1シートS1の両側縁部Seを折り返す工程において、図8Aに明示するように、当該折り返した折り返し部Sfが前記第1シートS1と第2シートS2との間に挟まれないように前記第1シートS1を折り返す。すなわち、第1ニップロール41に接する面Ssに前記折り返し部Sfが重なるように前記折り返し部Sfが折り返される。一方、図8Aの第2シートS2の中央部分Scに塗布機7から接着剤Dが塗布される。 Below, the manufacturing method of the expansion-contraction laminated body W is demonstrated.
Both side edges Se along the conveying direction of the first sheet S1 in FIG. In the step of folding the side edge portions Se of the first sheet S1, as shown in FIG. 8A, the folded portion Sf is not sandwiched between the first sheet S1 and the second sheet S2. The first sheet S1 is folded back. That is, the folded portion Sf is folded back so that the folded portion Sf overlaps the surface Ss in contact with the
図1のコンベヤベルト11~14が駆動装置3により回転駆動されている状態で、図2のスピンナ2から弾性部材Fが繰り出され、弾性部材Fがコンベヤベルト11~14の周りに張設状態で巻き付けられる。これにより、弾性部材Fはコンベヤベルト11~14の周りに螺旋状に巻き付けられながら、搬送方向Xの下流に向かって搬送される。
In a state where the conveyor belts 11 to 14 of FIG. 1 are rotationally driven by the driving device 3, the elastic member F is fed out from the spinner 2 of FIG. 2, and the elastic member F is stretched around the conveyor belts 11 to 14. Wrapped. As a result, the elastic member F is conveyed downstream in the conveying direction X while being spirally wound around the conveyor belts 11 to 14.
すなわち、弾性部材Fの第1部F1と第2部F2は、軸方向Yに対して若干傾いた状態で、コンベヤベルト11~14の上面と下面に沿って搬送される。その後、図4の高速度VHで駆動される第1および第4コンベヤベルト11,14と、低速度VLで駆動される第2および第3コンベヤベルト12,13との速度差により、図5に示すように、第1部F1と第2部F2とがニップロール41の軸方向Yに平行に近づきながら図2のニップロール41,42間に供給される。
一方、前記2枚のシートS1,S2が一対のニップロール41,42間に供給される。 That is, the first part F1 and the second part F2 of the elastic member F are conveyed along the upper and lower surfaces of theconveyor belts 11 to 14 while being slightly inclined with respect to the axial direction Y. Thereafter, due to the speed difference between the first and fourth conveyor belts 11 and 14 driven at the high speed VH of FIG. 4 and the second and third conveyor belts 12 and 13 driven at the low speed VL, FIG. As shown, the first part F1 and the second part F2 are supplied between the nip rolls 41 and 42 in FIG. 2 while approaching parallel to the axial direction Y of the nip roll 41.
On the other hand, the two sheets S1 and S2 are supplied between the pair of nip rolls 41 and.
一方、前記2枚のシートS1,S2が一対のニップロール41,42間に供給される。 That is, the first part F1 and the second part F2 of the elastic member F are conveyed along the upper and lower surfaces of the
On the other hand, the two sheets S1 and S2 are supplied between the pair of nip rolls 41 and.
すなわち、前記弾性部材Fの第1部F1と第2部F2とが前記搬送方向Xに互いに離間した状態で前記弾性部材Fが前記2枚のシートS1,S2の間に供給される。この際、前記第1部F1と第2部F2とは図8Aに示す前記シートS1,S2の厚さ方向Zに互いに離間した状態で前記2枚のシートS1,S2の間に供給される。
That is, the elastic member F is supplied between the two sheets S1 and S2 in a state where the first part F1 and the second part F2 of the elastic member F are separated from each other in the transport direction X. At this time, the first part F1 and the second part F2 are supplied between the two sheets S1 and S2 while being separated from each other in the thickness direction Z of the sheets S1 and S2 shown in FIG. 8A.
その後、弾性部材Fはニップロール41,42の周方向Rに沿ってニップ位置Oまで搬送される。この搬送後、前記一対のニップロール41,42により前記弾性部材Fが前記2枚のシートS1,S2の間に挟まれて、図8Bの弾性部材Fが次々に2枚のシートS1,S2に接着された状態で配置される。
Thereafter, the elastic member F is conveyed to the nip position O along the circumferential direction R of the nip rolls 41 and 42. After this conveyance, the elastic member F is sandwiched between the two sheets S1 and S2 by the pair of nip rolls 41 and 42, and the elastic member F in FIG. 8B adheres to the two sheets S1 and S2 one after another. Placed in the
すなわち、前記第1シートS1における前記折り返されていない非折り返し部Snと前記第2シートS2との間に前記弾性部材Fを挟んで、前記2枚のシートS1,S2および前記弾性部材Fの幅方向Yの中央部分Sc,Fcを互いに貼り合わせて複合体W1が形成される。
That is, the elastic member F is sandwiched between the non-folded non-folded portion Sn in the first sheet S1 and the second sheet S2, and the width of the two sheets S1, S2 and the elastic member F The center portions Sc and Fc in the direction Y are bonded together to form the composite W1.
前記配置後、たとえば、前記弾性部材Fが前記一対のシートS1,S2の間に挟まれた直後に、図8Cに示すように、第1シートS1と第2シートS2からはみ出した部分において前記第1部F1と第2部F2との間の前記弾性部材Fが一対のカッタC,Cにより次々に切断される。この際、図8Dの弾性部材FにおけるシートS1,S2に非接着の両端部Feは、いわゆるスナップバックして縮む。
こうして、図5の第1部F1と第2部とF2とが交互に互いに平行で、かつ、所定のピッチPで規則正しく配置された図8Dの複合体W1が生成される。 After the arrangement, for example, immediately after the elastic member F is sandwiched between the pair of sheets S1 and S2, as shown in FIG. 8C, the first portion S1 and the second sheet S2 protrude from the second sheet S2. The elastic member F between the first part F1 and the second part F2 is successively cut by a pair of cutters C and C. At this time, both end portions Fe that are not bonded to the sheets S1 and S2 in the elastic member F in FIG.
In this way, the composite body W1 of FIG. 8D in which the first part F1, the second part, and F2 of FIG. 5 are alternately arranged in parallel and regularly arranged at a predetermined pitch P is generated.
こうして、図5の第1部F1と第2部とF2とが交互に互いに平行で、かつ、所定のピッチPで規則正しく配置された図8Dの複合体W1が生成される。 After the arrangement, for example, immediately after the elastic member F is sandwiched between the pair of sheets S1 and S2, as shown in FIG. 8C, the first portion S1 and the second sheet S2 protrude from the second sheet S2. The elastic member F between the first part F1 and the second part F2 is successively cut by a pair of cutters C and C. At this time, both end portions Fe that are not bonded to the sheets S1 and S2 in the elastic member F in FIG.
In this way, the composite body W1 of FIG. 8D in which the first part F1, the second part, and F2 of FIG. 5 are alternately arranged in parallel and regularly arranged at a predetermined pitch P is generated.
前記図8Dの複合体W1は、図7Aに示すように、折り戻しロール8の表面に、前記複合体W1の第2シートS2における第1シートS1と反対側の面が接触しながら搬送される。
As shown in FIG. 7A, the composite W1 of FIG. 8D is conveyed while the surface of the second sheet S2 of the composite W1 opposite to the first sheet S1 is in contact with the surface of the folding roll 8. .
ここで、図7Aに示すように、前記折り戻しロール8は幅方向Yの中央から両端に向かって径小となる2つの部位82,82を有する表面を有しており、複合体W1の中央部分Wcが弾性部材Fの収縮力で縮もうとするのに伴い、第1シートS1の折り返し部Sfが図7Bおよび図9Aのように折り戻される。すなわち、図8Dの前記弾性部材Fの中央部分Fcが収縮するのに伴い前記複合体W1の中央部分Wcが前記幅方向Yに収縮することで、前記第1シートS1の折り返し部Sfを矢印Arで示すような折り戻す力が作用し、前記折り返し部Sfが、図9Aのように、折り戻されて前記第2シートS2の両側縁部Seに重なる。
複合体W1が幅方向Yに収縮することにより、図7Bに示す複合体W1(伸縮積層体W)の幅方向Yの長さは図7Aに示す複合体W1の幅方向Yの長さよりも短くなっている。 Here, as shown in FIG. 7A, thefolding roll 8 has a surface having two portions 82 and 82 that are reduced in diameter from the center in the width direction Y toward both ends, and the center of the composite W1. As the portion Wc tries to shrink due to the contraction force of the elastic member F, the folded portion Sf of the first sheet S1 is folded back as shown in FIGS. 7B and 9A. That is, as the central portion Fc of the elastic member F in FIG. 8D contracts, the central portion Wc of the composite W1 contracts in the width direction Y, whereby the folded portion Sf of the first sheet S1 is moved to the arrow Ar. As shown in FIG. 9A, the folding portion Sf is folded and overlapped with both side edges Se of the second sheet S2.
When the composite W1 contracts in the width direction Y, the length in the width direction Y of the composite W1 (expandable laminate W) shown in FIG. 7B is shorter than the length in the width direction Y of the composite W1 shown in FIG. 7A. It has become.
複合体W1が幅方向Yに収縮することにより、図7Bに示す複合体W1(伸縮積層体W)の幅方向Yの長さは図7Aに示す複合体W1の幅方向Yの長さよりも短くなっている。 Here, as shown in FIG. 7A, the
When the composite W1 contracts in the width direction Y, the length in the width direction Y of the composite W1 (expandable laminate W) shown in FIG. 7B is shorter than the length in the width direction Y of the composite W1 shown in FIG. 7A. It has become.
こうして、図9Aおよび図9Bに示すような伸縮積層体Wが生成される。
なお、前記重なる工程およびその後において、弾性部材Fおよび複合体W1の中央部分Fc,Wcは図9Bのように収縮する。 Thus, the stretchable laminate W as shown in FIGS. 9A and 9B is generated.
In the overlapping step and thereafter, the elastic member F and the central portions Fc and Wc of the composite W1 contract as shown in FIG. 9B.
なお、前記重なる工程およびその後において、弾性部材Fおよび複合体W1の中央部分Fc,Wcは図9Bのように収縮する。 Thus, the stretchable laminate W as shown in FIGS. 9A and 9B is generated.
In the overlapping step and thereafter, the elastic member F and the central portions Fc and Wc of the composite W1 contract as shown in FIG. 9B.
前記収縮後、前記伸縮積層体Wは図6の転向ロール10から接合装置9に供給され、例えば図9Cの第2シートS2の両端部Seに多数のエンボス加工が施されることにより前記第1シートS1の折り戻された部分と前記第2シートS2の両側縁部Seとが互いに接合される。なお、この接合は接着剤とニップロールを用いてなされてもよいし、溶着されてもよい。
After the shrinkage, the stretchable laminated body W is supplied from the turning roll 10 of FIG. 6 to the joining device 9, and for example, a plurality of embossing is performed on both end portions Se of the second sheet S2 of FIG. 9C. The folded portion of the sheet S1 and the side edge Se of the second sheet S2 are joined to each other. This joining may be performed using an adhesive and a nip roll, or may be welded.
こうして、図9Cおよび図9Dに示すように、中央部分Wcが伸縮し、かつ、両端部Weが非伸縮の伸縮積層体Wが得られる。なお、前記伸縮積層体Wは幅方向Yに延びる切断線に沿って切断されて、サイドパネルとして用いられてもよい。
In this way, as shown in FIGS. 9C and 9D, a stretchable laminate W is obtained in which the central portion Wc expands and contracts and the both ends We are non-stretchable. The stretchable laminated body W may be cut along a cutting line extending in the width direction Y and used as a side panel.
ところで、図7Aの折り戻しロール8は円筒面81の両端の円錐台状のテーパ円筒面82を有している。すなわち、円筒面81は軸線8cに対し平坦または緩やかに湾曲しており、テーパ円筒面82は軸線8cに対し前記円筒面81よりも大きく傾斜している。しかし、折り戻しロール8の表面は軸線8cに対して湾曲していてもよく、たとえば、樽型などであってもよい。
By the way, the folding roll 8 of FIG. 7A has a truncated conical tapered cylindrical surface 82 at both ends of the cylindrical surface 81. That is, the cylindrical surface 81 is flat or gently curved with respect to the axis 8c, and the tapered cylindrical surface 82 is inclined more than the cylindrical surface 81 with respect to the axis 8c. However, the surface of the folding roll 8 may be curved with respect to the axis 8c, and may be a barrel shape, for example.
また、図6に示すように、前記折り戻しロール8は固定軸88を中心にアーム89のまわりに回転可能かつ固定可能な構造とし、折り戻しロール8の位置調整を容易にしてもよい。
また、図2のニップロール41,42の軸方向Yの両端の全周に弾性部材Fに係合する係合部を設けて弾性部材Fがニップロールの外周に沿ってスリップすることなく搬送できるようにしてもよい。
なお、弾性部材Fは帯状に形成されたものであってもよい。 Further, as shown in FIG. 6, thefolding roll 8 may be structured to be rotatable and fixable around the arm 89 around a fixed shaft 88 so that the position adjustment of the folding roll 8 may be facilitated.
In addition, engagement portions that engage with the elastic member F are provided on the entire circumference of both ends in the axial direction Y of the nip rolls 41 and 42 in FIG. 2 so that the elastic member F can be conveyed without slipping along the outer periphery of the nip roll. May be.
The elastic member F may be formed in a band shape.
また、図2のニップロール41,42の軸方向Yの両端の全周に弾性部材Fに係合する係合部を設けて弾性部材Fがニップロールの外周に沿ってスリップすることなく搬送できるようにしてもよい。
なお、弾性部材Fは帯状に形成されたものであってもよい。 Further, as shown in FIG. 6, the
In addition, engagement portions that engage with the elastic member F are provided on the entire circumference of both ends in the axial direction Y of the nip rolls 41 and 42 in FIG. 2 so that the elastic member F can be conveyed without slipping along the outer periphery of the nip roll. May be.
The elastic member F may be formed in a band shape.
また、前記JP63-243309Aに開示されているように、帯状の幅の狭い一対のテープで弾性部材F1,F2を挟み、その帯状の一対のテープで弾性部材Fを挟んだ後に、別の幅広のシートで弾性部材Fを挟んでもよい。
Further, as disclosed in JP63-243309A, the elastic members F1 and F2 are sandwiched between a pair of narrow strip-like tapes, and the elastic member F is sandwiched between the pair of strip-like tapes. The elastic member F may be sandwiched between sheets.
以上のとおり、図面を参照しながら好適な実施例を説明したが、当業者であれば本明細書を見て、自明な範囲で種々の変更および修正を容易に想定するであろう。
As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily understand various changes and modifications within the obvious scope by looking at the present specification.
たとえば、シートS1,S2の一方又は両方が連続シートではなく、不連続シートであってもよい。また、本製造装置が並列に複数組設けられていてもよい。また、一対のシートは接着ではなく溶着されてもよい。
また、弾性部材は溶断されて切断されてもよい。
また、弾性部材の第1部および第2部は互いに平行にされる必要はなく、斜めに傾いたままシートに配置されてもよい。
また、スピンナに弾性部材の導出部を複数個設け、スピンナから複数本の弾性部材が導出されてもよい。
また、一対のニップロール41,42の幅方向Yの長さをそれぞれ小さくし、かつ、ニップ位置Oが二組のコンベヤベルト1A,1Bの間に位置するようにしてもよい。 For example, one or both of the sheets S1 and S2 may be discontinuous sheets instead of continuous sheets. Further, a plurality of sets of the present manufacturing apparatus may be provided in parallel. Further, the pair of sheets may be welded instead of being bonded.
Further, the elastic member may be melted and cut.
Further, the first part and the second part of the elastic member do not need to be parallel to each other, and may be arranged on the sheet while being inclined obliquely.
Further, a plurality of elastic member lead-out portions may be provided in the spinner, and a plurality of elastic members may be led out from the spinner.
Alternatively, the length in the width direction Y of each of the pair of nip rolls 41 and 42 may be reduced, and the nip position O may be positioned between the two sets of conveyor belts 1A and 1B.
また、弾性部材は溶断されて切断されてもよい。
また、弾性部材の第1部および第2部は互いに平行にされる必要はなく、斜めに傾いたままシートに配置されてもよい。
また、スピンナに弾性部材の導出部を複数個設け、スピンナから複数本の弾性部材が導出されてもよい。
また、一対のニップロール41,42の幅方向Yの長さをそれぞれ小さくし、かつ、ニップ位置Oが二組のコンベヤベルト1A,1Bの間に位置するようにしてもよい。 For example, one or both of the sheets S1 and S2 may be discontinuous sheets instead of continuous sheets. Further, a plurality of sets of the present manufacturing apparatus may be provided in parallel. Further, the pair of sheets may be welded instead of being bonded.
Further, the elastic member may be melted and cut.
Further, the first part and the second part of the elastic member do not need to be parallel to each other, and may be arranged on the sheet while being inclined obliquely.
Further, a plurality of elastic member lead-out portions may be provided in the spinner, and a plurality of elastic members may be led out from the spinner.
Alternatively, the length in the width direction Y of each of the pair of nip rolls 41 and 42 may be reduced, and the nip position O may be positioned between the two sets of
したがって、以上のような変更および修正は、請求の範囲から定まる本発明の範囲内のものと解釈される。
Accordingly, such changes and modifications are to be construed as within the scope of the present invention as defined by the claims.
本発明はシートに線状の弾性部材が複数本配置された伸縮積層体の製造に利用できる。
The present invention can be used for manufacturing a stretchable laminate in which a plurality of linear elastic members are arranged on a sheet.
1:コンベヤ 1A:第1組のコンベヤベルト 1B:第2組のコンベヤベルト
1C:センタライン 11~14:第1~第4コンベヤベルト
2:スピンナ 20:本体 21:中空軸 22:滑車
3:駆動装置
41,42:ニップロール
5:制御装置
6:セーラ
7:塗布機
8:折り戻しロール 8c:軸線 8e:両端 81:円筒面 82:テーパ円筒面
9:接合装置
C:カッタ
D:接着剤
F:弾性部材 F1:第1部 F2:第2部 Fc:中央部分 Fe:両端部
M1:第1モータ M2:第2モータ M3:第3モータ M4:第4モータ
N:法線方向(径方向)
O:ニップ位置
R:周方向
S1:第1シート Se:両側縁部 Sf:折り返し部 Sn:非折り返し部
S2:第2シート Sc:中央部分 Ss:第1ニップロールに接する面
T:接線方向
X:搬送方向 Y:幅方向,軸方向 Z:厚さ方向
W:伸縮積層体 W1:複合体 Wc:中央部分 We:両端部 1:Conveyor 1A: First set of conveyor belts 1B: Second set of conveyor belts 1C: Center line 11-14: First to fourth conveyor belts 2: Spinner 20: Main body 21: Hollow shaft 22: Pulley 3: Drive apparatus
41, 42: Nip roll
5: Control device 6: Sailor 7: Coating machine 8:Folding roll 8c: Axis 8e: Both ends 81: Cylindrical surface 82: Tapered cylindrical surface 9: Joining device C: Cutter D: Adhesive F: Elastic member F1: First Part F2: Second part Fc: Center part Fe: Both ends M1: First motor M2: Second motor M3: Third motor M4: Fourth motor N: Normal direction (radial direction)
O: Nip position R: Circumferential direction S1: First sheet Se: Both side edge portions Sf: Folded portion Sn: Non-folded portion S2: Second sheet Sc: Central portion Ss: Surface T in contact with the first nip roll T: Tangent direction
X: transport direction Y: width direction, axial direction Z: thickness direction W: stretch laminate W1: composite Wc: center portion We: both ends
1C:センタライン 11~14:第1~第4コンベヤベルト
2:スピンナ 20:本体 21:中空軸 22:滑車
3:駆動装置
41,42:ニップロール
5:制御装置
6:セーラ
7:塗布機
8:折り戻しロール 8c:軸線 8e:両端 81:円筒面 82:テーパ円筒面
9:接合装置
C:カッタ
D:接着剤
F:弾性部材 F1:第1部 F2:第2部 Fc:中央部分 Fe:両端部
M1:第1モータ M2:第2モータ M3:第3モータ M4:第4モータ
N:法線方向(径方向)
O:ニップ位置
R:周方向
S1:第1シート Se:両側縁部 Sf:折り返し部 Sn:非折り返し部
S2:第2シート Sc:中央部分 Ss:第1ニップロールに接する面
T:接線方向
X:搬送方向 Y:幅方向,軸方向 Z:厚さ方向
W:伸縮積層体 W1:複合体 Wc:中央部分 We:両端部 1:
41, 42: Nip roll
5: Control device 6: Sailor 7: Coating machine 8:
O: Nip position R: Circumferential direction S1: First sheet Se: Both side edge portions Sf: Folded portion Sn: Non-folded portion S2: Second sheet Sc: Central portion Ss: Surface T in contact with the first nip roll T: Tangent direction
X: transport direction Y: width direction, axial direction Z: thickness direction W: stretch laminate W1: composite Wc: center portion We: both ends
Claims (4)
- 第1シートと第2シートとの間に前記シートの搬送方向を横切る幅方向に延びる線状の複数本の弾性部材が配置されて前記幅方向に伸縮する伸縮積層体の製造方法であって、
前記第1シートの前記搬送方向に沿う両側縁部を折り返して折り返し部を形成する工程と、この工程において前記折り返し部が前記第1シートと第2シートとの間に挟まれないように前記第1シートを折り返し、
二組のコンベヤベルトに張架状態で前記弾性部材を螺旋状に巻回する工程と、
前記第1シートにおける前記折り返されていない非折り返し部と前記第2シートとの間に前記弾性部材を挟んで、前記2枚のシートおよび前記弾性部材の幅方向の中央部分を互いに貼り合わせて複合体を形成する工程と、
前記複合体における前記弾性部材の前記第1および第2シートからはみ出した部分において前記弾性部材を切断する工程と、
前記複合体の搬送方向に直交する方向に延びる軸線を有し、前記幅方向の中央から両端に向かって径小となる2つの部位を有する折り戻しロールの表面に、前記複合体の前記第2シートにおける前記第1シートと反対側の面を接触させながら前記複合体を搬送して、前記弾性部材の中央部分が収縮するのに伴い前記複合体の中央部分が前記幅方向に収縮することで、前記第1シートの各折り返し部が前記第2シートの前記搬送方向に沿う各側縁部に重なるように折り戻される工程とを備える。 A method for producing a stretchable laminate in which a plurality of linear elastic members extending in the width direction crossing the conveying direction of the sheet is disposed between the first sheet and the second sheet and expands and contracts in the width direction,
A step of folding both side edges of the first sheet along the conveying direction to form a folded portion, and the folding portion is not sandwiched between the first sheet and the second sheet in this step. Fold one sheet,
A step of spirally winding the elastic member in a stretched state on two sets of conveyor belts;
The elastic member is sandwiched between the unfolded portion of the first sheet that is not folded and the second sheet, and the two sheets and the central portion in the width direction of the elastic member are bonded together to form a composite Forming a body;
Cutting the elastic member at a portion of the elastic member protruding from the first and second sheets of the elastic member;
On the surface of a folding roll having an axis extending in a direction orthogonal to the conveyance direction of the complex and having two portions that are reduced in diameter from the center in the width direction toward both ends, the second of the complex The composite is conveyed while contacting the surface of the sheet opposite to the first sheet, and the central portion of the composite contracts in the width direction as the central portion of the elastic member contracts. And a step of folding each folded portion of the first sheet so as to overlap each side edge portion along the conveying direction of the second sheet. - 請求項1の方法において、前記第1シートの折り戻された部分と前記第2シートの両側縁部とを互いに接合する工程を更に備える。 2. The method according to claim 1, further comprising the step of joining the folded portion of the first sheet and both side edges of the second sheet.
- 第1シートと第2シートとの間に前記シートの搬送方向を横切る幅方向に延びる線状の複数本の弾性部材が配置されて前記幅方向に伸縮する伸縮積層体の製造装置であって、
前記第1シートの前記搬送方向に沿う両側縁部を折り返し当該折り返した折り返し部が前記第1シートと第2シートとの間に挟まれないように前記第1シートの折り返しを実行するセーラと、
前記弾性部材の前記幅方向に互いに離間した二組のコンベヤベルトと、
前記二組のコンベヤベルトに張架状態で前記弾性部材を螺旋状に巻回するスピンナと、
前記第1シートにおける前記折り返されていない非折り返し部と前記第2シートの間に前記弾性部材を挟んで、前記2枚のシートおよび前記弾性部材の幅方向の中央部分を互いに貼り合わせて複合体を形成する一対のニップロールと、
前記複合体における前記弾性部材の前記第1および第2シートからはみ出した部分において前記弾性部材を切断するカッターと、
前記複合体の搬送方向に直交する方向に延びる軸線を有し、前記幅方向の中央から両端に向かって径小となる2つの部位を有し表面に前記複合体の前記第2シートにおける前記第1シートと反対側の面を接触させながら前記複合体を搬送して、前記弾性部材の中央部分が収縮するのに伴い前記複合体の中央部分が前記幅方向に収縮することで、前記第1シートの各折り返し部を前記第2シートの前記搬送方向に沿う各側縁部に重なるように折り戻すための折り戻しロールとを備える。 A manufacturing apparatus for a stretchable laminate in which a plurality of linear elastic members extending in the width direction crossing the conveying direction of the sheet are arranged between the first sheet and the second sheet and expands and contracts in the width direction,
A sailor that folds back the first sheet so that the folded portion that is folded back on both side edges along the conveying direction of the first sheet is not sandwiched between the first sheet and the second sheet;
Two sets of conveyor belts spaced apart from each other in the width direction of the elastic member;
A spinner for spirally winding the elastic member in a stretched state on the two sets of conveyor belts;
A composite body in which the elastic member is sandwiched between the non-folded unfolded portion of the first sheet and the second sheet, and the two sheets and a central portion in the width direction of the elastic member are bonded together. A pair of nip rolls forming
A cutter that cuts the elastic member at a portion of the elastic member that protrudes from the first and second sheets of the elastic member;
It has an axis extending in a direction perpendicular to the conveyance direction of the composite, and has two parts that become smaller in diameter from the center in the width direction toward both ends. The composite is conveyed while contacting the surface opposite to the one sheet, and the central portion of the composite contracts in the width direction as the central portion of the elastic member contracts. A folding roll configured to fold back each folded portion of the sheet so as to overlap each side edge along the conveying direction of the second sheet. - 請求項3の製造装置において、前記第1シートの折り戻された部分と前記第2シートの両側縁部とを互いに接合する接合装置を更に備える。
4. The manufacturing apparatus according to claim 3, further comprising a joining device that joins the folded portion of the first sheet and both side edges of the second sheet.
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