WO2010113610A1 - 吸収性物品に係る複合シートの製造方法、及び製造装置 - Google Patents
吸収性物品に係る複合シートの製造方法、及び製造装置 Download PDFInfo
- Publication number
- WO2010113610A1 WO2010113610A1 PCT/JP2010/054039 JP2010054039W WO2010113610A1 WO 2010113610 A1 WO2010113610 A1 WO 2010113610A1 JP 2010054039 W JP2010054039 W JP 2010054039W WO 2010113610 A1 WO2010113610 A1 WO 2010113610A1
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- WIPO (PCT)
- Prior art keywords
- elastic band
- support shaft
- swing arm
- side roller
- sheet
- Prior art date
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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
-
- 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
- A61F13/15699—Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
-
- 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
- A61F13/15585—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
- A61F13/15609—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons the ribbons being applied in an irregular path
-
- 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
- A61F13/49019—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means being placed longitudinally, transversely or diagonally over the article
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
- Y10T156/1702—For plural parts or plural areas of single part
- Y10T156/1712—Indefinite or running length work
- Y10T156/1734—Means bringing articles into association with web
Definitions
- the present invention relates to a method for manufacturing a composite sheet and an apparatus for manufacturing an absorbent article.
- a disposable diaper etc. are known as an example of an absorptive article which absorbs excretion fluid.
- a continuous body of elastic members is continuously attached in a meandering pattern such as a sine curve to a continuous body of sheets that are continuously conveyed in the conveyance direction.
- Patent Document 1 discloses that a swing arm that swings in a direction crossing the sheet transport direction is disposed close to the sheet transport path, and a thread-like shape is formed in a through hole at a swing end of the swing arm. It is shown that the elastic member is swung with respect to the sheet by passing the elastic member.
- an elastic member 221 is wound around a rolling roller 203 that rolls on the outer peripheral surface of the transfer roll 201, and the rolling roller 203 is moved to the transfer roll 203.
- the elastic member 221 is attracted and held on the outer peripheral surface of the transfer roll 201 in a meandering pattern such as a sine curve by reciprocating in the direction of the rotation axis C201 of the 201, and then the sheet 231 contacts the outer peripheral surface of the transfer roll 201. Then, it is disclosed that the elastic member 221 is delivered and attached to the sheet 231.
- the sheet is arranged in an arrangement pattern in which a pair of elastic band members 221 and 221 are arranged in the CD direction orthogonal to the conveying direction, and the elastic band members 221 and 221 partially intersect each other.
- these rolling rollers 203 and 203 are aligned at the same position in the circumferential direction of the transfer roll 201, they collide with each other when reciprocating in the CD direction. As a result, the elastic band member 221 cannot be attached in such an arrangement pattern.
- the present invention has been made in view of the above-described conventional problems, and when attaching a continuous body of at least a pair of elastic band members to a continuous body of sheets in surface contact with a predetermined meandering pattern, respectively.
- a method and an apparatus for manufacturing a composite sheet relating to an absorbent article that can be reliably brought into surface contact and can be attached to the sheet without any problem even in an arrangement pattern in which these elastic band members partially intersect or approach each other The purpose is to provide.
- the main invention for achieving the above object is: A method of manufacturing a composite sheet according to an absorbent article by joining a continuous body of elastic band members in a predetermined meandering pattern to a continuous body of sheets continuously conveyed in the conveyance direction, The first elastic band member continuous body is brought into surface contact while being fed toward the sheet continuous body via the first swing arm swinging in the direction intersecting the transport direction with the first support shaft portion as the turning center.
- the first swing arm includes a first swing end side roller provided on the swing end side of the first swing arm and a first support shaft side roller provided on the first support shaft side.
- the second swing arm includes a second swing end side roller provided on the swing end side of the second swing arm, and a second support shaft side roller provided on the second support shaft side.
- the continuous body of the first elastic band members supplied toward the first support shaft portion side roller in the first supply route is sequentially formed by the first support shaft portion side roller.
- the first swing arm feeds the continuous body of the first elastic band member onto the continuous body of the sheet, and the second swing arm moves the continuous body of the second elastic band member to the continuous body.
- the second feeding position for feeding on a continuous sheet is a method for producing a composite sheet according to an absorbent article, wherein the second feeding positions are different from each other in the transport direction.
- An apparatus for manufacturing a composite sheet according to an absorbent article by joining a continuous body of elastic band members in a predetermined meandering pattern to a continuous body of sheets continuously conveyed in the conveyance direction,
- the first elastic band member continuous body is brought into surface contact while being fed toward the sheet continuous body via the first swing arm swinging in the direction intersecting the transport direction with the first support shaft portion as the turning center.
- a first guide member joined together Surface contact while feeding the continuous body of the second elastic band member toward the continuous body of the sheet via the second swing arm swinging in the direction intersecting the transport direction with the second support shaft portion as the turning center And a second guide member to be joined.
- the first swing arm includes a first swing end side roller provided on the swing end side of the first swing arm and a first support shaft side roller provided on the first support shaft side.
- the second swing arm includes a second swing end side roller provided on the swing end side of the second swing arm, and a second support shaft side roller provided on the second support shaft side.
- the continuum of the first elastic band members supplied toward the first support shaft side roller through the first supply route is, in turn, the outer peripheral surface of the first support shaft side roller and the first swing end.
- the continuum of the second elastic band members supplied toward the second support shaft side roller through the second supply route is, in turn, the outer peripheral surface of the second support shaft side roller and the second swing end. It is hung on the outer peripheral surface of the side roller, and after the direction of travel is reversed by the second oscillating end side roller, it is thrown on and joined to the continuous body of the sheet,
- the first swing arm feeds the continuous body of the first elastic band member onto the continuous body of the sheet, and the second swing arm moves the continuous body of the second elastic band member to the continuous body.
- the second feeding position for feeding on a continuous sheet is a manufacturing apparatus for a composite sheet according to an absorbent article, which is different from each other in the conveying direction.
- a continuous body of at least a pair of elastic band members is attached to a continuous body of sheets in a surface contact with each other in a predetermined meandering pattern, surface contact can be reliably achieved, and these elastic bands can be achieved. Even an arrangement pattern in which the members partially intersect or are close to each other can be attached to the sheet without any problem.
- FIG. 1A is a perspective view of a conventional method of attaching a continuous body of elastic band members 221 to a continuous body of sheets 231 in a predetermined meandering pattern
- FIG. 1B is an explanation of other arrangement patterns of the elastic band members 221.
- FIG. 2A is a partially broken plan view of the diaper 1
- FIG. 2B is an exploded perspective view thereof. It is a top view of the diaper 1 arrange
- FIG. 4A is a side view showing the manufacturing apparatus 30 according to the present embodiment in a partially broken view
- FIG. 4B is a view taken along the line BB in FIG. 4A.
- FIG. 4B is an enlarged view of the vicinity of the transport roll 50 in FIG. 4A. It is explanatory drawing of the other relative positional relationship of the 1st swing arm 61 and the 2nd swing arm 161. FIG. It is explanatory drawing of the other relative positional relationship of the 1st swing arm 61 and the 2nd swing arm 161. FIG. It is explanatory drawing of the other relative positional relationship of the 1st swing arm 61 and the 2nd swing arm 161. FIG. It is explanatory drawing of other embodiment of the manufacturing apparatus which concerns on this invention.
- a method of manufacturing a composite sheet according to an absorbent article by joining a continuous body of elastic band members in a predetermined meandering pattern to a continuous body of sheets continuously conveyed in the conveyance direction,
- the first elastic band member continuous body is brought into surface contact while being fed toward the sheet continuous body via the first swing arm swinging in the direction intersecting the transport direction with the first support shaft portion as the turning center.
- the first swing arm includes a first swing end side roller provided on the swing end side of the first swing arm and a first support shaft side roller provided on the first support shaft side.
- the second swing arm includes a second swing end side roller provided on the swing end side of the second swing arm, and a second support shaft side roller provided on the second support shaft side.
- the continuous body of the first elastic band members supplied toward the first support shaft portion side roller in the first supply route is sequentially formed by the first support shaft portion side roller.
- the first swing arm feeds the continuous body of the first elastic band member onto the continuous body of the sheet, and the second swing arm moves the continuous body of the second elastic band member to the continuous body.
- the first loading position related to the first swing arm and the second loading position related to the second swing arm are differentiated with respect to the sheet conveying direction. Therefore, interference between the first elastic band member and the second elastic band member during the swinging operation can be avoided.
- the meander pattern of the first elastic band member attached to the seat by the first swing arm and the meander pattern of the second elastic band member attached to the seat by the second swing arm partially intersect or approach each other. Even if it is such an arrangement pattern, these 1st and 2nd elastic belt members can be attached without a problem.
- the first elastic band member and the second elastic band member are put into the sheet after their traveling directions are reversed by the first rocking end side roller and the second rocking end side roller, respectively. And when this is reversed, these first and second elastic band members are wound around the outer peripheral surfaces of the first and second oscillating end side rollers, respectively, at a predetermined winding angle.
- each elastic band member is constrained to a flat shape, and as a result, the elastic band member is maintained in a flat shape even at the first and second charging positions. Therefore, the first and second elastic band members can be reliably brought into surface contact with the sheet and can be joined.
- a method for producing a composite sheet according to such an absorbent article The continuous sheet is wound around a predetermined roll angle around a predetermined rotation axis with a direction along the conveyance direction as a circumferential direction, and is conveyed by being wound at a predetermined winding angle.
- Both the first closing position related to the first swing arm and the second closing position related to the second swing arm are set within the range of the wrapping angle
- the second charging position is set downstream of the first charging position in the circumferential direction
- the second swing arm moves the first swing arm toward the downstream side in the circumferential direction by a predetermined rotation angle (excluding 0 ° and 360 °) around an imaginary axis parallel to the rotation axis of the transport roll.
- the manufacturing apparatus according to the manufacturing method can be downsized, and the joining position accuracy of the first elastic band member and the second elastic band member on the sheet can be improved. Can be achieved. Details are as follows.
- the second swing arm is disposed at a position where the first swing arm is rotated around the virtual axis by the rotation angle. Therefore, while reliably avoiding mutual interference between the first swing arm and the second swing arm, the space size required for avoiding the interference can be reduced. As a result, the manufacturing apparatus according to the manufacturing method can be reduced in size.
- the relative positional relationship between the first oscillating end side roller and the transport roll is generally maintained for the second oscillating end side roller and the transport roll. Both the roller and the second oscillating end side roller can be arranged close to the transport roll, respectively, so that both the first elastic band member and the second elastic band member are at the target joining position on the sheet. It can be mounted with high accuracy.
- the rotation angle is preferably an arbitrary value within a range of 30 ° to 150 °.
- the manufacturing apparatus according to the manufacturing method can be downsized, and the joining position accuracy of the first elastic band member and the second elastic band member on the sheet can be improved. Can be achieved with certainty.
- a method for producing a composite sheet according to such an absorbent article The continuous sheet is wound around a predetermined roll angle around a predetermined rotation axis with a direction along the conveyance direction as a circumferential direction, and is conveyed by being wound at a predetermined winding angle.
- Both the throwing first input position related to the first swing arm and the second input position related to the second swing arm are set within the range of the winding angle,
- the rotation center axis of the first support shaft portion of the first swing arm and the rotation center shaft of the second support shaft portion of the second swing arm are such that the rotation axis direction of the transport roll is a normal direction. It is desirable to face the direction intersecting each other in the virtual plane.
- the first swing arm and the second swing arm are arranged so as to intersect each other in the virtual plane. Therefore, while reliably avoiding mutual interference between the first swing arm and the second swing arm, the space size required for avoiding the interference can be reduced. As a result, the manufacturing apparatus according to the manufacturing method can be reduced in size.
- a method for producing a composite sheet according to such an absorbent article The continuous sheet is wound around a predetermined roll angle around a predetermined rotation axis with a direction along the conveyance direction as a circumferential direction, and is conveyed by being wound at a predetermined winding angle. Both the first throwing position related to the first swing arm and the second throwing position related to the second swing arm are upstream of the intermediate position in the circumferential direction within the wrapping angle range. It is desirable to be set to.
- a region for pressing the first elastic band member and the second elastic band member over the sheet on the conveying roll is pressed in the circumferential direction of the conveying roll. As a result, the first elastic band member and the second elastic band member can be firmly joined on the sheet.
- the first supply route is along the rotation center axis direction of the first support shaft portion of the first swing arm
- the second supply route is preferably along the rotation center axis direction of the second support shaft portion of the second swing arm.
- the first elastic band member is sent to the first support portion side roller along the rotation center axis direction of the first support portion. Therefore, the movement in the crossing direction of the first elastic band member that can be caused by the swinging operation of the first swing arm is mainly the portion of the first elastic band member that is located upstream of the first support shaft side roller.
- a method for producing a composite sheet according to such an absorbent article The rotation center axis of the first support shaft portion of the first swing arm is in contact with the outer peripheral surface of the first support shaft portion side roller of the first swing arm, It is desirable that the rotation center axis of the second support shaft portion of the second swing arm is in contact with the outer peripheral surface of the second support shaft portion side roller of the second swing arm. According to the method of manufacturing a composite sheet according to such an absorbent article, the rotation center axis of the first support shaft portion is in contact with the outer peripheral surface of the first support shaft portion side roller. Therefore, the first elastic band member is reliably sent to the first support shaft portion side roller along the rotation center axis direction of the first support shaft portion.
- the movement of the first elastic band member in the crossing direction that can be caused by the swinging operation of the first swing arm is assured as twisting of the portion of the first elastic band member upstream of the first support shaft side roller.
- the rotation center axis of the second spindle part is in contact with the outer peripheral surface of the second spindle part side roller. Therefore, the second elastic band member is reliably sent to the second support shaft portion side roller along the rotation center axis direction of the second support shaft portion.
- a method for producing a composite sheet according to such an absorbent article The continuous sheet is wound around a predetermined roll angle around a predetermined rotation axis with a direction along the conveyance direction as a circumferential direction, and is conveyed by being wound at a predetermined winding angle.
- Both the first closing position related to the first swing arm and the second closing position related to the second swing arm are set within the range of the wrapping angle,
- the first oscillating end side roller of the first oscillating arm and the first support shaft portion are disposed so as to sandwich the rotating shaft of the transport roll between them, It is desirable that the second oscillating end side roller of the second oscillating arm and the second support shaft portion are disposed so as to sandwich the rotating shaft of the transport roll therebetween.
- the traveling directions of the first elastic band member and the second elastic band member are reversed by the first rocking roller and the second rocking roller, respectively. Later, each of these elastic band members can be wound around the outer peripheral surface of the transport roll. Therefore, both the first elastic band member and the second elastic band member can be thrown toward the sheet while maintaining a flat state, and as a result, each elastic band member is securely brought into surface contact and attached to the sheet. It becomes possible.
- An apparatus for manufacturing a composite sheet according to an absorbent article by joining a continuous body of elastic band members in a predetermined meandering pattern to a continuous body of sheets continuously conveyed in the conveyance direction,
- the first elastic band member continuous body is brought into surface contact while being fed toward the sheet continuous body via the first swing arm swinging in the direction intersecting the transport direction with the first support shaft portion as the turning center.
- a first guide member joined together Surface contact while feeding the continuous body of the second elastic band member toward the continuous body of the sheet via the second swing arm swinging in the direction intersecting the transport direction with the second support shaft portion as the turning center And a second guide member to be joined.
- the first swing arm includes a first swing end side roller provided on the swing end side of the first swing arm and a first support shaft side roller provided on the first support shaft side.
- the second swing arm includes a second swing end side roller provided on the swing end side of the second swing arm, and a second support shaft side roller provided on the second support shaft side.
- the continuum of the first elastic band members supplied toward the first support shaft side roller through the first supply route is, in turn, the outer peripheral surface of the first support shaft side roller and the first swing end.
- the first input position related to the first swing arm and the second input position related to the second swing arm are made different with respect to the sheet conveying direction. Therefore, interference between the first elastic band member and the second elastic band member during the swinging operation can be avoided.
- the meander pattern of the first elastic band member attached to the seat by the first swing arm and the meander pattern of the second elastic band member attached to the seat by the second swing arm partially intersect or approach each other. Even if it is such an arrangement pattern, these 1st and 2nd elastic belt members can be attached without a problem.
- the first elastic band member and the second elastic band member are put into the sheet after their traveling directions are reversed by the first rocking end side roller and the second rocking end side roller, respectively. And when this is reversed, these first and second elastic band members are wound around the outer peripheral surfaces of the first and second oscillating end side rollers, respectively, at a predetermined winding angle.
- each elastic band member is constrained to a flat shape, and as a result, the elastic band member is maintained in a flat shape even at the first and second charging positions. Therefore, the first and second elastic band members can be reliably brought into surface contact with the sheet and can be joined.
- FIG. 2A is a partially broken plan view of the diaper 1
- FIG. 2B is an exploded perspective view thereof. In both figures, the front waistline region 1a and the back waistline region 1c are shown separated in the flank of the pant-type diaper 1.
- the diaper 1 has a longitudinal direction, a width direction, and a thickness direction orthogonal to each other, and a front waistline region 1a, a crotch region 1b, and a back waistline region 1c are set along the longitudinal direction of the diaper 1.
- the diaper 1 includes a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and a liquid-absorbing absorber 4 interposed between the two sheets 2 and 3 in the thickness direction. Have. And the surface sheet 2 and the back surface sheet 3 overlap in the part extended outward from the periphery of the absorber 4, and are mutually joined by hot-melt-adhesive etc., Thereby, it is an edge part before and after a longitudinal direction.
- a flap 11 is formed, and side edge flaps 12 are formed on the left and right in the width direction.
- a leg-recessed recess 10 is formed to be curved inward in the width direction, and the diaper 1 has a substantially hourglass shape as a whole.
- the top sheet 2 for example, a liquid permeable plastic film or a non-woven fabric is used.
- the back sheet 3 has an inner sheet 3a facing the top sheet 2 and an outer sheet 3b facing the inner sheet 3a. Both the sheets 3a and 3b are substantially the same shape and size, and can be bonded or welded. It is joined.
- a liquid-impermeable plastic film or a nonwoven fabric is used for the inner sheet 3a, and a breathable nonwoven fabric is used for the outer sheet 3b.
- a waist elastic member 16 is joined to each end edge flap 11 of the front and rear waist areas 1a and 1c in an extended state while being interposed between the top sheet 2 and the back sheet 3.
- a front elastic band member 21 and a rear elastic band member 22 are provided across the diaper 1 along the width direction in the crotch region 1b and the vicinity thereof.
- these elastic band members 21 and 22 for example, a stretchable nonwoven fabric, a band-shaped rubber, or the like is used.
- Each of the elastic band members 21 and 22 extends in the width direction with a predetermined meandering pattern curved in a convex shape toward a center line CL that bisects the diaper 1 in the longitudinal direction.
- the inner sheet 3a and the outer sheet 3b constituting the back sheet 3 are interposed between the inner sheet 3a and the outer sheet 3b.
- the front and rear elastic band members 21 and 22 cooperate to impart elasticity to the leg-hole recessed portion 10.
- a sine curve is illustrated as the meandering pattern of the elastic band members 21 and 22.
- the meandering pattern is such that the notch portion 10 around the leg effectively fits around the leg of the diaper wearer. It can change suitably so that it may obtain.
- the elastic band members 21 and 22 are arranged so as to intersect each other at the folded portion of each meander pattern as shown in FIG. 3. Further, in order to weaken the stretchability of the intersecting region R, the elastic band members 21 and 22 belonging to the intersecting region R may be divided. Incidentally, the reason why the stretchability of the intersecting region R is weakened is that when the stretchability reaches the portion of the absorbent body 4, the absorbent body 4 is wrinkled and the liquid absorption performance may be deteriorated.
- the manufacturing method and manufacturing apparatus 30 of the composite sheet which concerns on this embodiment >>> Such a diaper 1 is completed by joining various components to the base material of the diaper 1 that continuously flows through the production line.
- the manufacturing method and the manufacturing apparatus 30 of the composite sheet according to the present embodiment are responsible for one step. That is, here, the elastic band member 121 to be the above-described front elastic band member 21 with respect to a continuous body of the sheet 103b to be the outer sheet 3b of the above-described back sheet 3 (hereinafter referred to as the sheet 103b).
- a continuum (corresponding to the continuum of the first elastic band member, hereinafter also referred to as the first elastic band member 121) and the continuum (second elasticity) of the elastic band member 122 to be the rear elastic band member 21 described above. It corresponds to a continuous body of band members, and is also applied to the process of attaching the second elastic band member 122) in the above meandering pattern.
- FIG. 4A is a side view showing a partially broken manufacturing apparatus 30 according to the process
- FIG. 4B is a view taken along the line BB in FIG. 4A
- FIG. 5 is an enlarged view of the vicinity of the transport roll 50 in FIG. 4A.
- the width direction of the manufacturing apparatus 30 is also referred to as the CD direction, or the front-back side.
- the direction orthogonal to the CD direction is referred to as the MD direction. That is, the MD direction means an arbitrary direction in a plane orthogonal to the CD direction.
- two directions orthogonal to each other are defined as a vertical direction (vertical direction) and a horizontal direction (horizontal direction).
- the CD direction also faces the horizontal direction, and is also orthogonal to the left-right direction that also faces the horizontal direction.
- the manufacturing apparatus 30 includes (1) a conveyance roll 50 that conveys the sheet 103b in the MD direction (corresponding to the conveyance direction) by rotating the sheet 103b while winding the sheet 103b at a predetermined winding angle, and (2) a left of the conveyance roll 50.
- the first and second elastic band members 121 and 122 are generated by dividing the sheet-like member 120, which is disposed on the left side and is continuously sent from the left side, into two parts at the center in the CD direction.
- a slit device 40 and (3) a first guide member 60 that continuously puts and joins the stretched first elastic band member 121 to the portion of the sheet 103b wound around the outer peripheral surface of the transport roll 50; 4) a second guide member 160 that continuously inserts and joins the stretched second elastic band member 122 to the portion of the sheet 103b.
- these 1st and 2nd guide members 60 and 160 respectively send each elastic belt member 121,122 to CD direction (cross direction), sending the elastic band member 121,122 in charge toward the sheet
- a pair of elastic band members 121 and 122 are attached to the sheet surface in a surface contact state in an intended meander pattern such as a sine curve.
- a hot melt adhesive or the like is applied to the elastic band members 121 and 122 by an adhesive application device (not shown) before the elastic band members 121 and 122 are joined to the sheet 103b. .
- each component 40, 50, 60, 160 will be described.
- each component device related to the manufacturing apparatus 30 is not attached to a vertical support wall 92 (so-called end plate) extending over the entire length of the manufacturing apparatus 30 in the MD direction. It is cantilevered via an appropriate bracket as shown. That is, as shown in FIG. 4B, on the back side in the CD direction (the back side of the paper surface in FIG. 4A), a support wall 92 is erected along a direction substantially parallel to the MD direction (a direction substantially parallel to the paper surface). is doing. The vertical wall surface of the support wall 92 supports the back side portion of each component device in the CD direction, and the front side portion is in an unsupported state.
- Transport roll 50 The transport roll 50 rotates counterclockwise at a predetermined peripheral speed with a cylindrical body with the rotation axis C50 facing the horizontal CD direction as a main body and a direction along the MD direction as a circumferential direction Dc.
- the sheet 103b is supplied to the conveying roll 50 substantially horizontally from the right side, and the sheet 103b has a winding start position Ps at a position of about 0 o'clock on the upper part of the conveying roll 50, for example, from 180 ° to It is wound around the outer peripheral surface of the transport roll 50 at a winding angle of 200 °, and the transport direction is reversed.
- the position at about 6 o'clock at the bottom of the transport roll 50 is set as the winding end position Pe to the right in the substantially horizontal direction. Sent out.
- the transport roll 50 may be configured as a drive roll that is driven and rotated by using an appropriate motor or the like as a drive source, or may be configured as a driven roll that is driven and rotated by the sheet 103b.
- the slit device 40 has a pair of upper and lower disk-shaped rotary blades 40a and 40b at the center in the CD direction.
- the sheet-like member 120 which is the raw material of the elastic band members 121 and 122, is divided into two parts, thereby a pair of elastic band members 121 and 122, that is, the first elastic band.
- the member 121 and the second elastic band member 122 are generated. Then, the first elastic band member 121 is sent to the first guide member 60, and the second elastic band member 122 is sent to the second guide member 160.
- the first guide member 60 has a plate-like first swing arm 61 provided above the transport roll 50.
- the first swing arm 61 has a longitudinal direction, and is disposed across the rotation axis C50 of the transport roll 50 across the left and right in the horizontal direction, with the longitudinal direction facing the left and right in the horizontal direction.
- the pivot end 61a positioned to the right of the rotation axis C50 is defined with a support shaft 65 positioned to the left of the rotation axis C50 (hereinafter also referred to as the first support axis 65) as a turning fulcrum. It can swing in the CD direction.
- the first support shaft portion 65 is, for example, a shaft body 65 that protrudes integrally and upward from the upper surface of the first swing arm 61, and is rotatably supported in the outer cylinder member 66 via a bearing 67. Yes.
- the outer cylinder member 66 is fixed to the support wall 92 via an appropriate bracket (not shown), whereby the first swing arm 61 is rotated around the vertical rotation center axis C65 of the first support shaft portion 65. It is supported so that it can turn freely.
- the drive mechanism 70 of the first swing arm 61 is a combination of a motor 72 and a crank mechanism 74.
- the crank mechanism 74 includes a disc-shaped disk member 75 that is integrally and concentrically fixed to a drive rotation shaft 72 a of the motor 72 that faces the vertical direction in the MD direction, the disk member 75, and the first swing arm 61.
- a rod-shaped link member 76 that connects the power point PP.
- the end of the link member 76 is connected to the disk member 75 at a position eccentric from the drive rotation shaft 72a by a connecting pin 78 or the like. Therefore, each time the disk member 75 makes one rotation, the link member 76 is reciprocated only once in the longitudinal direction thereof, and the first reciprocating arm 61 swings once by this reciprocating movement. .
- a pair of rollers 63 and 64 are rotatably supported around horizontal rotation axes C63 and C64, respectively, on the lower surface of the first swing arm 61 on the side facing the transport roll 50.
- One roller 63 is a first oscillating end side roller 63 provided at the oscillating end 61 a, and the other roller 64 is closer to the first spindle 65 than the first oscillating end side roller 63. It is the 1st spindle part side roller 64 provided in the position.
- the first elastic band member 121 of the elastic band members 121 and 122 sent from the slitter device 40 is first sent to the right along the horizontal direction from the left, and the first swing arm 61 At a position where the plane center position coincides with the rotation center axis C65 of the first support shaft portion 65, the traveling direction is changed upward in the vertical direction by the direction changing roller 90, and the first support shaft portion side roller 64 is reached. It is hung around the outer peripheral surface of the first spindle portion side roller 64. Then, the roller 64 is guided to the swing end 61a located on the right side of the transport roll 50, and then, the roller 64 is wound around the outer peripheral surface of the first swing end side roller 63 of the swing end 61a. After the direction of travel is reversed to the left by winding, the sheet is fed into the winding range Ps to Pe of the sheet 103b from the upper right of the transport roll 50.
- the first swinging end side roller 63 reciprocates in the CD direction along with the swinging motion of the swinging end 61a, whereby the first elastic band member 121 is moved to the sheet 103b. While the joining position on the surface is continuously changed in the CD direction, the sheet 103b is joined to the sheet surface in an intended meander pattern. Further, at the time of this insertion, the first elastic band member 121 is constrained to a substantially flat shape by the wrapping of the outer peripheral surface of the first support shaft side roller 64 and the outer peripheral surface of the first swing end side roller 63. The first elastic band member 121 is bonded to the sheet 103b in a surface contact state (corresponding to “first bonding”).
- the position P1 at which the first swing arm 61 puts the first elastic band member 121 on the sheet 103b (hereinafter also referred to as the first throwing position P1) is wound around the winding. It may be set in a region upstream of the intermediate position Pm in the circumferential direction Dc within the range Ps to Pe. With this setting, it is possible to secure a wide area along the circumferential direction Dc for overlapping and pressing the first elastic band member 121 on the sheet 103b on the transport roll 50. As a result, the first elastic band member 121 is secured. Can be firmly joined to the sheet 103b.
- fluctuation arm 61 is said 1st throwing position P1. This refers to the position where the sheet 103b is first contacted.
- the first swing end side roller 63 and the first support shaft portion side roller 64 connect the swing end 61a and the rotation center axis C65 of the first support shaft portion 65, respectively. It arrange
- the outer peripheral surface of the first support shaft side roller 64 always faces the first swing end side roller 63 according to the reciprocating movement of the first swing end side roller 63.
- the first elastic band member 121 can be reliably sent toward the first swing end side roller 63.
- the running state of the first elastic band member 121 can be stabilized, for example, the first elastic band member 121 can be effectively prevented from falling off the first swing end side roller 63.
- the rotation axis C63 of the first rocking end side roller 63 and the rotation axis C64 of the first support shaft side roller 64 are independent of the rocking motion of the first rocking arm 61. Always kept parallel. Therefore, it is possible to reliably relieve the tension difference between the both end edges in the width direction of the first elastic band member 121 that may be caused by the swinging motion of the first swinging arm 61, and as a result, the first swinging end side roller 63 or the first elastic band member 121 from the first support shaft side roller 64 can be effectively prevented from falling off.
- the supply route R121 of the first elastic band member 121 to the first support shaft side roller 64 (hereinafter also referred to as the first supply route R121) is as follows.
- the roller 64 is aligned with the rotation center axis C65 of the first support shaft portion 65, and the outer peripheral surface of the first support shaft portion side roller 64 is in contact with the rotation center axis C65 of the first support shaft portion 65. Is arranged. Therefore, the movement in the CD direction of the first elastic band member 121 that can be caused by the swinging operation of the first swing arm 61 is mainly performed by the first elastic band member 121 upstream of the first support shaft side roller 64. It appears as a twist of the portion 121a and is absorbed by this, and as a result, the first elastic band member 121 is effectively prevented from falling off the roller 64.
- the swing operation of the first swing arm 61 is accompanied.
- the amount of movement in the CD direction of the roller 64 that can occur can be made substantially zero, and this also effectively prevents the first elastic band member 121 from falling off the first support shaft side roller 64. It will be.
- the second guide member 160 is a member having substantially the same structure as the first guide member 60 described above. As shown in FIG. 4B, the second elastic band member 122, which is disposed on the back side of the first guide member 60 in the CD direction, is in charge of the second guide member 160. The member 60 is attached side by side on the far side in the CD direction from the first elastic band member 121 attached to the sheet 103b.
- the arrangement pattern of the first and second elastic band members 121 and 122 may be the first elastic band member 121 (221) and the second elastic band member as shown in FIG. 3 (or FIG. 1B). There may be a pattern that partially intersects 122 (221). In this case, if the first swing arm 61 and the second swing arm 161 are arranged in parallel, the swing arms 61 and 161 collide with each other, and the above-described pattern cannot be formed.
- the position of the second swing arm 161 in the circumferential direction Dc of the transport roll 50 is different from that of the first swing arm 61 as shown in FIG. 4A.
- the second swing arm 161 is shifted from the first swing arm 61 to the downstream side in the circumferential direction Dc.
- the second throwing position P2 where the second swinging arm 161 puts the second elastic band member 122 on the sheet 103b is the second throwing position P2 of the first swinging arm 61. It comes to be located on the downstream side in the circumferential direction Dc from the 1 loading position P1.
- the above-described second feeding position P2 is the second elastic band member 122 sent out from the second rocking end side roller 163 of the second rocking arm 161 in the same manner as the definition of the first loading position P1 described above. Means the position where the sheet 103b is first contacted.
- the second swing arm 161 moves the first swing arm 61 in the circumferential direction by a predetermined rotation angle ⁇ a around a virtual axis (not shown) parallel to the rotation axis C50 of the transport roll 50.
- the rotation angle ⁇ a is 90 °.
- the second swing arm 161 is arranged on the left side of the first swing arm 61 and the transport roll 50, and the second swing arm 161 moves in the longitudinal direction.
- the rotation axis C50 of the transport roll 50 is disposed across the vertical direction while being directed vertically up and down.
- the swing end 161a positioned above the rotation axis C50 is swingable in the CD direction with the second support shaft portion 165 positioned below the rotation axis C50 as a turning fulcrum.
- the drive mechanism 170 for swinging motion is a combination of a motor 172 and a crank mechanism 174, similar to the first guide member 60.
- the second support shaft portion 165 is a shaft body 165 that extends integrally and to the left from the left surface of the second swing arm 161.
- the inner cylinder member 166 is rotatably supported via a bearing 167.
- the outer cylinder member 166 is fixed to the support wall 92.
- the second support shaft portion 165 is formed with a through hole 165h along the direction of the rotation center axis C165, and also penetrates the second swing arm 161 in the left-right direction corresponding to the through hole 165h.
- a hole 161h is formed.
- these through-holes 165h and 61h are provided to supply route R122 to the 2nd rocking
- a pair of rollers 163 and 164 are rotatably supported around the substantially horizontal rotation axes C163 and C164 on the right surface which is the surface facing the transport roll 50 in the second swing arm 161, respectively.
- One roller 163 is a second oscillating end side roller 163 provided at the oscillating end 161 a, and the other roller 164 is closer to the second support shaft portion 165 than the second oscillating end side roller 163. It is the 2nd spindle part side roller 164 provided in the position.
- the second elastic band member 122 sent from the slitter device 40 is arranged next to the CD direction of the first elastic band member 121 sent to the first guide member 60 described above, and from the left in the horizontal direction. It is fed to the right and passes through the through hole 65h in the second support shaft portion 165 and exits to the right surface of the second swing arm 161. And it is induced
- the sheet is wound around the outer peripheral surface of the end roller 163, the traveling direction is reversed substantially downward by the winding, and the sheet is then fed into the winding range Ps to Pe of the sheet 103b from the upper left of the conveying roll 50.
- the second rocking end side roller 163 reciprocates in the CD direction along with the rocking motion of the rocking end 161a, so that the second elastic band member 122 is moved to the sheet 103b. While the joining position on the surface is continuously changed in the CD direction, the sheet 103b is joined to the sheet surface in an intended meander pattern. Further, at the time of loading, the second elastic band member 122 is restrained to a substantially flat shape by winding of the outer peripheral surface of the second support shaft side roller 164 and the outer peripheral surface of the second swing end side roller 163, so that the sheet 103b is bonded in a surface contact state (corresponding to “second bonding”).
- the second charging position P2 related to the second elastic band member 122 is set within the winding range Ps to Pe, similarly to the case of the first charging position P1 related to the first elastic band member 121. Is preferably set in a region upstream of the intermediate position Pm in the circumferential direction Dc (see FIG. 5). By setting in this way, it is possible to ensure a wide area along the circumferential direction Dc for overlapping and pressing the second elastic band member 122 against the sheet 103b on the transport roll 50. As a result, the second elastic band member 122 Can be firmly joined to the sheet 103b.
- the rotation angle ⁇ a described above that is, the rotation angle ⁇ a related to the positional relationship between the first swing arm 61 and the second swing arm 161 is preferably excluding 0 ° and 360 °. It may be selected from an angle, more preferably from a range of 30 ° to 150 °, even more preferably from a range of 45 ° to 135 °, even more preferably. It may be selected from the range of 80 ° to 110 °.
- the manufacturing apparatus 30a has a compact configuration, but the second oscillating end side roller 163 is transported as a transport roll. 50 can not be placed close to.
- FIG. 7 that is not applicable, that is, when the rotation angle ⁇ a is 180 °, both the first and second oscillating end side rollers 63 and 163 can be disposed close to the transport roll 50, but they are manufactured.
- the configuration of the device 30b becomes large. That is, neither of the examples in FIGS. 6 and 7 can achieve both the proximity of the swinging end side rollers 63 and 163 and the compactness of the manufacturing apparatus 30.
- both the moving end side rollers 63 and 163 can be disposed close to the transport roll 50, and the manufacturing apparatuses 30 and 30c can be made compact. That is, it is possible to achieve both the proximity of the swing end side rollers 63 and 163 and the compactness of the manufacturing apparatus 30.
- the reason why it is preferable that the swing end side rollers 63 and 163 be disposed close to the transport roll 50 is that the elastic band members 121 with respect to the swing operation of the swing arms 61 and 161 are not disposed close to each other. This is because the follow-up performance of the swinging motions of. That is, when not arranged close to each other, the portions of the elastic band members 121 and 122 released from the swinging end side rollers 63 and 163 toward the sheet 103b are like whips when the swinging operation is reversed. This is because the operation delay from the swinging end side rollers 63 and 163 increases and the actual joining position easily deviates from the target joining position of the elastic band members 121 and 122 in the sheet 103b. is there.
- the following can be illustrated as a standard of proximity arrangement. That is, as shown in FIG. 5, a position P3 (P4) where the elastic band member 121 (122) is separated from the outer peripheral surface of the swing end side roller 63 (163), and an elastic band member 121 (122) released from the position P3. )
- a position P3 (P4) where the elastic band member 121 (122) is separated from the outer peripheral surface of the swing end side roller 63 (163), and an elastic band member 121 (122) released from the position P3.
- the rotation center axis C65 of the first support shaft portion 65 of the first swing arm 61 and the rotation center axis C165 of the second support shaft portion 165 of the second swing arm 161 are in the direction of the rotation axis C50 of the transport roll 50.
- the directions are perpendicular to each other in the imaginary plane (the plane parallel to the paper surface of FIG. 4A or 5) as the normal direction, and the intersection angle ⁇ b between the rotation center axis C65 and the rotation center axis C165 is 90 °.
- the second swing arm 161 is arranged with respect to the first swing arm 61 so that
- a preferable range of the crossing angle ⁇ b includes an angle excluding 0 ° and 360 °, more preferably a range of 30 ° to 150 °, and still more preferably 45 ° to 135 °.
- a range of 80 ° is included, and still more preferably, a range of 80 ° to 110 ° is included.
- fluctuation end side rollers 63 and 163 and the compactization of the manufacturing apparatus 30 can be made compatible.
- the configuration example of FIG. 6 corresponds to the case where the above-mentioned intersection angle ⁇ b is 0 ° or 360 °
- the configuration example of FIG. 7 corresponds to the case where the intersection angle ⁇ b is 180 °
- the example corresponds to the case of 45 °
- the configuration example of FIG. 4A corresponds to the case of 90 °.
- the second swing end side roller 163 and the second support shaft side roller 164 are respectively connected to the swing end 161a of the second swing arm 161 and the rotation center axis C165 of the second support shaft portion 165. It is arranged on a straight line.
- the second swinging end side roller 163 is oriented with respect to the second swinging arm 161 in a state where the outer peripheral surface thereof faces the rotation center axis C165 of the second support shaft part 165 of the second swinging arm 161.
- the sheet 103b is wound around the conveying roll 50 at a predetermined winding angle and conveyed, and the first elastic band member 121 and the second elastic band member 122 are loaded toward the wound sheet 103b.
- the present invention is not limited to this.
- the sheet 103b does not have to be wound around the transport roll 50 at the input positions P1 and P2 related to the elastic band members 121 and 122, that is, along the horizontal direction as in the illustrated example.
- the first and second input positions P1 and P2 may be set in the conveyance path of the linear sheet 103b.
- two swing arms 61 and 161 are provided.
- the number of swing arms may be plural, that is, three or more.
- the manufacturing process of the pant-type diaper 1 is illustrated, but the present invention is not limited to this, and the unfolded diaper (the front waist region 1a and the back waist region 1c of the diaper when worn is a tape
- the present invention may be applied to the manufacture of diapers that are fastened and fixed with fasteners.
- the configuration in which the swing arm 61 (161) is provided with the two rollers, the swing end side roller 63 (163) and the support shaft side roller 64 (164), is not limited to this.
- One or more rollers may be provided between the swing end side roller 63 (163) and the support shaft side roller 64 (164).
- the rotation axis of the additionally installed roller is preferably parallel to the rotation axis C64 (C164) of the support shaft side roller 64 (164).
- the rotation center axis C65 of the first support shaft portion 65 of the first guide member 60 is directed in the vertical direction (vertical direction), and the support shaft portion 165 of the second guide member 160 is.
- the rotation center axis C165 is directed in the left-right direction (horizontal direction) and the rotation axis C50 of the transport roll 50 is directed in the CD direction (horizontal direction), but the support shaft portion of the first guide member 60 or the second guide member 160
- the rotation center axis C65 (C165) of 65 (165) and the rotation axis C50 of the transport roll 50 are not limited to this as long as they are perpendicular to each other.
- the rotation axis C63 (C163) of the swing end side roller 63 (163) and the rotation axis C64 (C164) of the support shaft side roller 64 (164) are directed substantially in the horizontal direction.
- the elastic band member 121 (122) is handed over in a substantially flat shape with little twist to the transport roll 50 in which the rotation axis C50 faces the horizontal direction that is the CD direction. Therefore, the directions of the rotation axes C63 (C163) and C64 (C164) of the swing end side roller 63 (163) and the support shaft side roller 64 (164) are not limited to the substantially horizontal direction, and the transport roll 50 Can be changed according to the direction in which the rotation axis C50 is directed.
- the rotation axis C63 (C163) of the swing end side roller 63 (163) and the rotation axis C64 (C164) of the support shaft side roller 64 (164) are accompanied by the swinging motion of the swing arm 61 (161).
- the rotation axes C63 (C163) and C64 (C164) need only be arranged in a direction parallel to the rotation axis C50 of the conveyance roll 50, and more specifically, the rotation axis of the conveyance roll 50.
- the oscillating end side roller 63 (so that the rotation axes C63 (C163), C64 (C164) are perpendicular to the rotation center axis C65 (C165) of the support shaft 65 (165) which is perpendicular to C50. 163) and the spindle part side roller 64 (164) should just be arrange
- the swing end side roller 63 (163) and the support shaft side roller 64 (164) are smooth rolls whose outer peripheral surfaces are flat across the width direction (CD direction) of the roller.
- a roller with a crown may be used.
- This roller with a crown is a roller in which the maximum diameter portion of the roller is set at the center in the width direction.
- the elastic band member 121 (122) hung around the outer peripheral surface is given a centripetal force toward the central portion in the width direction of the roller by the maximum diameter portion of the outer peripheral surface, It becomes difficult to come off.
- crown-equipped rollers include, for example, a roller in which an annular rib is formed along the circumferential direction only at the central portion of the outer peripheral surface, and the radius gradually increases from the end portion of the outer peripheral surface to the central portion.
- a roller etc. are mentioned.
- the hot melt adhesive is applied to the elastic band members 121 and 122 by the adhesive application device, but the present invention is not limited to this as long as the sheet 103b and the elastic band members 121 and 122 can be joined.
- it may be applied to the sheet 103b, or may be applied to both the elastic band members 121 and 122 and the sheet 103b.
- 1 disposable diaper (absorbent article), 1a front waist area, 1b inseam area, 1c rear waist area, 2 surface sheet, 3 back sheet, 3a inner sheet, 3b outer sheet, 4 absorber, 10 leg notch 11, 11 edge flaps, 12 side edge flaps, 16 waist elastic members, 21 front elastic band members, 22 rear elastic band members, 30 manufacturing equipment, 30a manufacturing equipment, 30b manufacturing equipment, 30c manufacturing equipment, 40 slits Device, 40a rotary blade, 40b rotary blade, 50 transport roll, 60 first guide member, 61 first swing arm, 61a swing end, 63 first swing end side roller, 64 first support shaft side roller, 65 1st spindle part, 66 outer cylinder member, 67 bearing, 70 drive mechanism, 72 motor, 72a drive rotating shaft, 74 crank Structure, 75 disk member, 76 link member, 78 connecting pin, 90 direction change roller, 92 support wall, 103b sheet (continuous sheet), 120 sheet member, 121 first elastic band member (first elastic band member) Continuum), 121a
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Abstract
Description
搬送方向に連続して搬送されるシートの連続体に対して、弾性帯部材の連続体を所定の蛇行パターンで接合して吸収性物品に係る複合シートを製造する方法であって、
第1支軸部を旋回中心として前記搬送方向と交差する方向に揺動する第1揺動アームを介して、第1弾性帯部材の連続体をシートの連続体に向けて送りつつ面接触させて接合する第1の接合することと、
第2支軸部を旋回中心として前記搬送方向と交差する方向に揺動する第2揺動アームを介して、第2弾性帯部材の連続体を前記シートの連続体に向けて送りつつ面接触させて接合する第2の接合することと、を有し、
前記第1揺動アームは、該第1揺動アームの揺動端側に設けられた第1揺動端側ローラーと、前記第1支軸部側に設けられた第1支軸部側ローラーと、を有し、
前記第2揺動アームは、該第2揺動アームの揺動端側に設けられた第2揺動端側ローラーと、前記第2支軸部側に設けられた第2支軸部側ローラーと、を有し、
前記第1の接合することでは、第1供給ルートで前記第1支軸部側ローラーに向けて供給された前記第1弾性帯部材の連続体が、順次、前記第1支軸部側ローラーの外周面及び前記第1揺動端側ローラーの外周面に掛け回されるとともに、該第1揺動端側ローラーにより進行方向を反転された後に前記シートの連続体上に投入されて接合され、
前記第2の接合することでは、第2供給ルートで前記第2支軸部側ローラーに向けて供給された前記第2弾性帯部材の連続体が、順次、前記第2支軸部側ローラーの外周面及び前記第2揺動端側ローラーの外周面に掛け回されるとともに、該第2揺動端側ローラーにより進行方向を反転された後に前記シートの連続体上に投入されて接合され、
前記第1揺動アームが前記第1弾性帯部材の連続体を前記シートの連続体上に投入する第1投入位置と、前記第2揺動アームが前記第2弾性帯部材の連続体を前記シートの連続体上に投入する第2投入位置とは、互いに、前記搬送方向に関して異なっていることを特徴とする吸収性物品に係る複合シートの製造方法である。
搬送方向に連続して搬送されるシートの連続体に対して、弾性帯部材の連続体を所定の蛇行パターンで接合して吸収性物品に係る複合シートを製造する装置であって、
第1支軸部を旋回中心として前記搬送方向と交差する方向に揺動する第1揺動アームを介して、第1弾性帯部材の連続体をシートの連続体に向けて送りつつ面接触させて接合する第1案内部材と、
第2支軸部を旋回中心として前記搬送方向と交差する方向に揺動する第2揺動アームを介して、第2弾性帯部材の連続体を前記シートの連続体に向けて送りつつ面接触させて接合する第2案内部材と、を備え、
前記第1揺動アームは、該第1揺動アームの揺動端側に設けられた第1揺動端側ローラーと、前記第1支軸部側に設けられた第1支軸部側ローラーと、を有し、
前記第2揺動アームは、該第2揺動アームの揺動端側に設けられた第2揺動端側ローラーと、前記第2支軸部側に設けられた第2支軸部側ローラーと、を有し、
第1供給ルートで前記第1支軸部側ローラーに向けて供給された前記第1弾性帯部材の連続体が、順次、前記第1支軸部側ローラーの外周面及び前記第1揺動端側ローラーの外周面に掛け回されるとともに、該第1揺動端側ローラーにより進行方向を反転された後に前記シートの連続体上に投入されて接合され、
第2供給ルートで前記第2支軸部側ローラーに向けて供給された前記第2弾性帯部材の連続体が、順次、前記第2支軸部側ローラーの外周面及び前記第2揺動端側ローラーの外周面に掛け回されるとともに、該第2揺動端側ローラーにより進行方向を反転された後に前記シートの連続体上に投入されて接合され、
前記第1揺動アームが前記第1弾性帯部材の連続体を前記シートの連続体上に投入する第1投入位置と、前記第2揺動アームが前記第2弾性帯部材の連続体を前記シートの連続体上に投入する第2投入位置とは、互いに、前記搬送方向に関して異なっていることを特徴とする吸収性物品に係る複合シートの製造装置である。
第1支軸部を旋回中心として前記搬送方向と交差する方向に揺動する第1揺動アームを介して、第1弾性帯部材の連続体をシートの連続体に向けて送りつつ面接触させて接合する第1の接合することと、
第2支軸部を旋回中心として前記搬送方向と交差する方向に揺動する第2揺動アームを介して、第2弾性帯部材の連続体を前記シートの連続体に向けて送りつつ面接触させて接合する第2の接合することと、を有し、
前記第1揺動アームは、該第1揺動アームの揺動端側に設けられた第1揺動端側ローラーと、前記第1支軸部側に設けられた第1支軸部側ローラーと、を有し、
前記第2揺動アームは、該第2揺動アームの揺動端側に設けられた第2揺動端側ローラーと、前記第2支軸部側に設けられた第2支軸部側ローラーと、を有し、
前記第1の接合することでは、第1供給ルートで前記第1支軸部側ローラーに向けて供給された前記第1弾性帯部材の連続体が、順次、前記第1支軸部側ローラーの外周面及び前記第1揺動端側ローラーの外周面に掛け回されるとともに、該第1揺動端側ローラーにより進行方向を反転された後に前記シートの連続体上に投入されて接合され、
前記第2の接合することでは、第2供給ルートで前記第2支軸部側ローラーに向けて供給された前記第2弾性帯部材の連続体が、順次、前記第2支軸部側ローラーの外周面及び前記第2揺動端側ローラーの外周面に掛け回されるとともに、該第2揺動端側ローラーにより進行方向を反転された後に前記シートの連続体上に投入されて接合され、
前記第1揺動アームが前記第1弾性帯部材の連続体を前記シートの連続体上に投入する第1投入位置と、前記第2揺動アームが前記第2弾性帯部材の連続体を前記シートの連続体上に投入する第2投入位置とは、互いに、前記搬送方向に関して異なっていることを特徴とする吸収性物品に係る複合シートの製造方法。
前記シートの連続体は、前記搬送方向に沿う方向を周方向として所定の回転軸周りに回転する搬送ロールの外周面に所定の巻き付き角度で巻き付けられて搬送され、
前記第1揺動アームに係る前記第1投入位置及び前記第2揺動アームに係る前記第2投入位置のどちらも、前記巻き付き角度の範囲内に設定されており、
前記第2投入位置は、前記第1投入位置よりも前記周方向の下流側に設定され、
前記第2揺動アームは、前記第1揺動アームを前記搬送ロールの前記回転軸と平行な仮想軸周りに所定の回転角度(0°及び360°を除く)だけ前記周方向の下流側へ回転移動した位置に配置されているのが望ましい。
このような吸収性物品に係る複合シートの製造方法によれば、当該製造方法に係る製造装置の小型化と、シート上における第1弾性帯部材及び第2弾性帯部材の接合位置精度の向上との両立を図れる。詳しくは次のとおりである。
また、回転移動なので、概ね第1揺動端側ローラーと搬送ロールとの相対位置関係は、第2揺動端側ローラーと搬送ロールとについても概ね維持される、よって、第1揺動端側ローラー及び第2揺動端側ローラーの両者を、それぞれ搬送ロールに近接配置することができて、これにより、第1弾性帯部材及び第2弾性帯部材のどちらも、シート上の目標接合位置に高い精度で取り付け可能となる。
前記回転角度は、30°~150°の範囲内の任意値であるのが望ましい。
このような吸収性物品に係る複合シートの製造方法によれば、当該製造方法に係る製造装置の小型化と、シート上における第1弾性帯部材及び第2弾性帯部材の接合位置精度の向上との両立を確実に図れる。
前記シートの連続体は、前記搬送方向に沿う方向を周方向として所定の回転軸周りに回転する搬送ロールの外周面に所定の巻き付き角度で巻き付けられて搬送され、
前記第1揺動アームに係る前記投第1入位置及び前記第2揺動アームに係る前記第2投入位置のどちらも、前記巻き付き角度の範囲内に設定されており、
前記第1揺動アームの前記第1支軸部の回転中心軸及び前記第2揺動アームの前記第2支軸部の回転中心軸は、前記搬送ロールの前記回転軸方向を法線方向とする仮想平面内において互いに交差する方向を向いているのが望ましい。
このような吸収性物品に係る複合シートの製造方法によれば、第1揺動アームと第2揺動アームとは、前記仮想平面内において互いに交差するように配置されることになる。よって、第1揺動アームと第2揺動アームとの間の互いの干渉を確実に回避しながらも、当該干渉回避に要するスペースサイズを小さくすることができる。その結果、当該製造方法に係る製造装置の小型化を図れる。
前記シートの連続体は、前記搬送方向に沿う方向を周方向として所定の回転軸周りに回転する搬送ロールの外周面に所定の巻き付き角度で巻き付けられて搬送され、
前記第1揺動アームに係る前記第1投入位置及び前記第2揺動アームに係る前記第2投入位置のどちらも、前記巻き付き角度の範囲内における前記周方向の中間位置よりも上流側の領域に設定されているのが望ましい。
このような吸収性物品に係る複合シートの製造方法によれば、搬送ロール上においてシート上に第1弾性帯部材及び第2弾性帯部材を重ね合わせて押し付けるための領域を前記搬送ロールの周方向に沿って広く確保できて、結果、第1弾性帯部材及び第2弾性帯部材をシート上に強固に接合可能となる。
前記第1供給ルートは、前記第1揺動アームの前記第1支軸部の回転中心軸方向に沿っており、
前記第2供給ルートは、前記第2揺動アームの前記第2支軸部の回転中心軸方向に沿っているのが望ましい。
このような吸収性物品に係る複合シートの製造方法によれば、第1弾性帯部材は、第1支軸部の回転中心軸方向に沿って第1支軸部側ローラーへと送られる。よって、第1揺動アームの揺動動作により生じうる第1弾性帯部材の交差方向の移動は、主に第1支軸部側ローラーよりも上流側に位置する第1弾性帯部材の部分の捻れとして現れてこれに吸収され、これにより、第1支軸部側ローラーからの第1弾性帯部材の脱落は有効に防止される。
同様に、第2弾性帯部材は、第2支軸部の回転中心軸方向に沿って第2支軸部側ローラーへと送られる。よって、第2揺動アームの揺動動作により生じうる第2弾性帯部材の交差方向の移動は、主に第2支軸部側ローラーよりも上流側に位置する第2弾性帯部材の部分の捻れとして現れてこれに吸収され、これにより、第2支軸部側ローラーからの第2弾性帯部材の脱落は有効に防止される。
前記第1揺動アームの前記第1支軸部の前記回転中心軸は、前記第1揺動アームの前記第1支軸部側ローラーの外周面に接しており、
前記第2揺動アームの前記第2支軸部の前記回転中心軸は、前記第2揺動アームの前記第2支軸部側ローラーの外周面に接しているのが望ましい。
このような吸収性物品に係る複合シートの製造方法によれば、第1支軸部の回転中心軸は、第1支軸部側ローラーの外周面に接している。よって、第1弾性帯部材は、第1支軸部の回転中心軸方向に沿って確実に第1支軸部側ローラーへ送られる。その結果、第1揺動アームの揺動動作により生じうる第1弾性帯部材の交差方向の移動は、第1支軸部側ローラーよりも上流側の第1弾性帯部材の部分の捻れとして確実に現れてこれに吸収されるようになり、結果、第1支軸部側ローラーから第1弾性帯部材が外れることは有効に防止される。
同様に、第2支軸部の回転中心軸は、第2支軸部側ローラーの外周面に接している。よって、第2弾性帯部材は、第2支軸部の回転中心軸方向に沿って確実に第2支軸部側ローラーへ送られる。その結果、第2揺動アームの揺動動作により生じうる第2弾性帯部材の交差方向の移動は、第2支軸部側ローラーよりも上流側の第2弾性帯部材の部分の捻れとして確実に現れてこれに吸収されるようになり、結果、第2支軸部側ローラーから第2弾性帯部材が外れることは有効に防止される。
前記シートの連続体は、前記搬送方向に沿う方向を周方向として所定の回転軸周りに回転する搬送ロールの外周面に所定の巻き付き角度で巻き付けられて搬送され、
前記第1揺動アームに係る前記第1投入位置及び前記第2揺動アームに係る前記第2投入位置のどちらも、前記巻き付き角度の範囲内に設定されており、
前記第1揺動アームの第1揺動端側ローラーと前記第1支軸部とは、これら両者で前記搬送ロールの前記回転軸を挟むように配置されており、
前記第2揺動アームの第2揺動端側ローラーと前記第2支軸部とは、これら両者で前記搬送ロールの前記回転軸を挟むように配置されているのが望ましい。
このような吸収性物品に係る複合シートの製造方法によれば、第1揺動ローラー及び第2揺動ローラーで、それぞれ、第1弾性帯部材及び第2弾性帯部材の進行方向を反転させた後に、これら各弾性帯部材を搬送ロールの外周面に巻き付かせることができる。よって、第1弾性帯部材及び第2弾性帯部材のどちらも平坦状態に維持しつつ、シートへ向けて投入することができ、結果、これら各弾性帯部材を確実に面接触させてシートに取り付け可能となる。
搬送方向に連続して搬送されるシートの連続体に対して、弾性帯部材の連続体を所定の蛇行パターンで接合して吸収性物品に係る複合シートを製造する装置であって、
第1支軸部を旋回中心として前記搬送方向と交差する方向に揺動する第1揺動アームを介して、第1弾性帯部材の連続体をシートの連続体に向けて送りつつ面接触させて接合する第1案内部材と、
第2支軸部を旋回中心として前記搬送方向と交差する方向に揺動する第2揺動アームを介して、第2弾性帯部材の連続体を前記シートの連続体に向けて送りつつ面接触させて接合する第2案内部材と、を備え、
前記第1揺動アームは、該第1揺動アームの揺動端側に設けられた第1揺動端側ローラーと、前記第1支軸部側に設けられた第1支軸部側ローラーと、を有し、
前記第2揺動アームは、該第2揺動アームの揺動端側に設けられた第2揺動端側ローラーと、前記第2支軸部側に設けられた第2支軸部側ローラーと、を有し、
第1供給ルートで前記第1支軸部側ローラーに向けて供給された前記第1弾性帯部材の連続体が、順次、前記第1支軸部側ローラーの外周面及び前記第1揺動端側ローラーの外周面に掛け回されるとともに、該第1揺動端側ローラーにより進行方向を反転された後に前記シートの連続体上に投入されて接合され、
第2供給ルートで前記第2支軸部側ローラーに向けて供給された前記第2弾性帯部材の連続体が、順次、前記第2支軸部側ローラーの外周面及び前記第2揺動端側ローラーの外周面に掛け回されるとともに、該第2揺動端側ローラーにより進行方向を反転された後に前記シートの連続体上に投入されて接合され、
前記第1揺動アームが前記第1弾性帯部材の連続体を前記シートの連続体上に投入する第1投入位置と、前記第2揺動アームが前記第2弾性帯部材の連続体を前記シートの連続体上に投入する第2投入位置とは、互いに、前記搬送方向に関して異なっていることを特徴とする吸収性物品に係る複合シートの製造装置。
また、これら第1弾性帯部材及び第2弾性帯部材は、それぞれ、第1揺動端側ローラー及び第2揺動端側ローラーによって進行方向を反転された後に前記シートに投入される。そして、この反転される際には、これら第1及び第2弾性帯部材は、それぞれ、第1及び第2揺動端側ローラーの外周面に所定の巻き付き角度で巻き付いているので、前記外周面によって、これら各弾性帯部材は平坦形状に拘束され、その結果、前記第1及び第2投入位置においても平坦形状に維持される。よって、前記シートに対して第1及び第2弾性帯部材を確実に面接触させて接合可能となる。
本実施形態のシートの製造方法及び製造装置は、例えば、使い捨ておむつ1(吸収性物品に相当)の製造ラインに適用されている。
図2Aはおむつ1の部分破断平面図であり、図2Bは同分解斜視図である。両図とも、パンツ型のおむつ1の脇腹部において前胴周り域1aと後胴周り域1cとを分離した展開状態で示している。
裏面シート3は、表面シート2と向かい合う内側シート3aと、その内側シート3aと向かい合う外側シート3bとを有し、これら両シート3a,3bは互いに略同形同大であって、接着または溶着により接合されている。内側シート3aには、液不透過性のプラスチックフィルムや不織布が使用され、外側シート3bには、通気性の不織布が使用される。
前後胴周り域1a,1cの各端縁部フラップ11には、それぞれ、胴周り弾性部材16が、表面シート2と裏面シート3との間に介装されつつ伸長状態で接合されている。
このようなおむつ1は、製造ラインを連続して流れるおむつ1の基材に対して各種構成部品が接合等されて完成される。本実施形態に係る複合シートの製造方法及び製造装置30は、その一工程を担っている。すなわち、ここでは、上述の裏面シート3の外側シート3bとなるべきシート103bの連続体(以下では、シート103bと言う)に対して、上述の前方弾性帯部材21となるべき弾性帯部材121の連続体(第1弾性帯部材の連続体に相当し、以下では、第1弾性帯部材121とも言う)と、上述の後方弾性帯部材21となるべき弾性帯部材122の連続体(第2弾性帯部材の連続体に相当し、以下では、第2弾性帯部材122とも言う)とを上述の蛇行パターンで取り付ける工程に適用されている。
搬送ロール50は、回転軸C50が水平なCD方向を向いた円柱体を本体とし、MD方向に沿う方向を周方向Dcとして所定の周速で反時計回りに回転する。この搬送ロール50には、例えば、右方から略水平にシート103bが供給され、当該シート103bは、搬送ロール50の上部の約0時の位置を巻き付き開始位置Psとして、そこから例えば180°~200°の巻き付き角度で搬送ロール50の外周面に巻き付けられて搬送方向を反転され、最終的に、搬送ロール50の下部の約6時の位置を巻き付き終了位置Peとして略水平方向の右方へ送り出される。
スリット装置40は、CD方向の中央に上下一対の円盤状の回転刃40a,40bを有している。そして、これら回転刃40a,40bを通過する際に、弾性帯部材121,122の原反たるシート状部材120は二分割されて、これにより一対の弾性帯部材121,122、つまり第1弾性帯部材121と第2弾性帯部材122とが生成される。そして、第1弾性帯部材121は、第1案内部材60へ送られ、第2弾性帯部材122は、第2案内部材160へ送られる。
第1案内部材60は、搬送ロール50の上方に設けられた板状の第1揺動アーム61を有する。第1揺動アーム61は長手方向を有し、当該長手方向を水平方向の左右に向けながら、搬送ロール50の回転軸C50を水平方向の左右に跨いで配置されている。そして、同回転軸C50よりも左方に位置する支軸部65(以下、第1支軸部65とも言う)を旋回支点として、同回転軸C50よりも右方に位置する揺動端61aをCD方向に揺動可能である。
第2案内部材160は、上述の第1案内部材60とほぼ同構造の部材である。そして、図4Bに示すように、CD方向に関して第1案内部材60よりも奥側に配置されており、これにより、この第2案内部材160が担当する第2弾性帯部材122は、第1案内部材60がシート103bに取り付ける第1弾性帯部材121よりもCD方向の奥側に並んで取り付けられる。
図5に示すように、第2揺動アーム161は、第1揺動アーム61を、搬送ロール50の回転軸C50と平行な不図示の仮想軸周りに所定の回転角度θaだけ、前記周方向Dcの下流側に回転移動した位置に在り、図示例の場合、回転角度θaは90°である。
(a)第2揺動端側ローラー163と第2支軸部側ローラー164とは、各々、第2揺動アーム161の揺動端161aと第2支軸部165の回転中心軸C165とを結ぶ直線上に配置されている。
(b)第2揺動端側ローラー163は、その外周面が第2揺動アーム161の第2支軸部165の回転中心軸C165の方を向いた状態で第2揺動アーム161に対する向きを変更不能に第2揺動アーム161に固定されており、第2支軸部側ローラー164も、その外周面が第2揺動アーム161の揺動端161aの方を向いた状態で第2揺動アーム161に対する向きを変更不能に第2揺動アーム161に固定されている。
(c)第2支軸部側ローラー164への第2弾性帯部材122の供給ルートR122は、第2支軸部165の回転中心軸C165と一直線に揃えられているとともに、第2支軸部側ローラー164の外周面が第2支軸部165の回転中心軸C165に接するように第2支軸部側ローラー164は配置されている。
以上、本発明の実施形態について説明したが、本発明は、かかる実施形態に限定されるものではなく、以下に示すような変形が可能である。
Claims (9)
- 搬送方向に連続して搬送されるシートの連続体に対して、弾性帯部材の連続体を所定の蛇行パターンで接合して吸収性物品に係る複合シートを製造する方法であって、
第1支軸部を旋回中心として前記搬送方向と交差する方向に揺動する第1揺動アームを介して、第1弾性帯部材の連続体をシートの連続体に向けて送りつつ面接触させて接合する第1の接合することと、
第2支軸部を旋回中心として前記搬送方向と交差する方向に揺動する第2揺動アームを介して、第2弾性帯部材の連続体を前記シートの連続体に向けて送りつつ面接触させて接合する第2の接合することと、を有し、
前記第1揺動アームは、該第1揺動アームの揺動端側に設けられた第1揺動端側ローラーと、前記第1支軸部側に設けられた第1支軸部側ローラーと、を有し、
前記第2揺動アームは、該第2揺動アームの揺動端側に設けられた第2揺動端側ローラーと、前記第2支軸部側に設けられた第2支軸部側ローラーと、を有し、
前記第1の接合することでは、第1供給ルートで前記第1支軸部側ローラーに向けて供給された前記第1弾性帯部材の連続体が、順次、前記第1支軸部側ローラーの外周面及び前記第1揺動端側ローラーの外周面に掛け回されるとともに、該第1揺動端側ローラーにより進行方向を反転された後に前記シートの連続体上に投入されて接合され、
前記第2の接合することでは、第2供給ルートで前記第2支軸部側ローラーに向けて供給された前記第2弾性帯部材の連続体が、順次、前記第2支軸部側ローラーの外周面及び前記第2揺動端側ローラーの外周面に掛け回されるとともに、該第2揺動端側ローラーにより進行方向を反転された後に前記シートの連続体上に投入されて接合され、
前記第1揺動アームが前記第1弾性帯部材の連続体を前記シートの連続体上に投入する第1投入位置と、前記第2揺動アームが前記第2弾性帯部材の連続体を前記シートの連続体上に投入する第2投入位置とは、互いに、前記搬送方向に関して異なっていることを特徴とする吸収性物品に係る複合シートの製造方法。 - 請求項1に記載の吸収性物品に係る複合シートの製造方法であって、
前記シートの連続体は、前記搬送方向に沿う方向を周方向として所定の回転軸周りに回転する搬送ロールの外周面に所定の巻き付き角度で巻き付けられて搬送され、
前記第1揺動アームに係る前記第1投入位置及び前記第2揺動アームに係る前記第2投入位置のどちらも、前記巻き付き角度の範囲内に設定されており、
前記第2投入位置は、前記第1投入位置よりも前記周方向の下流側に設定され、
前記第2揺動アームは、前記第1揺動アームを前記搬送ロールの前記回転軸と平行な仮想軸周りに所定の回転角度(0°及び360°を除く)だけ前記周方向の下流側へ回転移動した位置に配置されていることを特徴とする吸収性物品に係る複合シートの製造方法。 - 請求項2に記載の吸収性物品に係る複合シートの製造方法であって、
前記回転角度は、30°~150°の範囲内の任意値であることを特徴とする吸収性物品に係る複合シートの製造方法。 - 請求項1に記載の吸収性物品に係る複合シートの製造方法であって、
前記シートの連続体は、前記搬送方向に沿う方向を周方向として所定の回転軸周りに回転する搬送ロールの外周面に所定の巻き付き角度で巻き付けられて搬送され、
前記第1揺動アームに係る前記投第1入位置及び前記第2揺動アームに係る前記第2投入位置のどちらも、前記巻き付き角度の範囲内に設定されており、
前記第1揺動アームの前記第1支軸部の回転中心軸及び前記第2揺動アームの前記第2支軸部の回転中心軸は、前記搬送ロールの前記回転軸方向を法線方向とする仮想平面内において互いに交差する方向を向いていることを特徴とする吸収性物品に係る複合シートの製造方法。 - 請求項1乃至4の何れかに記載の吸収性物品に係る複合シートの製造方法であって、
前記シートの連続体は、前記搬送方向に沿う方向を周方向として所定の回転軸周りに回転する搬送ロールの外周面に所定の巻き付き角度で巻き付けられて搬送され、
前記第1揺動アームに係る前記第1投入位置及び前記第2揺動アームに係る前記第2投入位置のどちらも、前記巻き付き角度の範囲内における前記周方向の中間位置よりも上流側の領域に設定されていることを特徴とする吸収性物品に係る複合シートの製造方法。 - 請求項1乃至5の何れかに記載の吸収性物品に係る複合シートの製造方法であって、
前記第1供給ルートは、前記第1揺動アームの前記第1支軸部の回転中心軸方向に沿っており、
前記第2供給ルートは、前記第2揺動アームの前記第2支軸部の回転中心軸方向に沿っていることを特徴とする吸収性物品に係る複合シートの製造方法。 - 請求項6に記載の吸収性物品に係る複合シートの製造方法であって、
前記第1揺動アームの前記第1支軸部の前記回転中心軸は、前記第1揺動アームの前記第1支軸部側ローラーの外周面に接しており、
前記第2揺動アームの前記第2支軸部の前記回転中心軸は、前記第2揺動アームの前記第2支軸部側ローラーの外周面に接していることを特徴とする吸収性物品に係る複合シートの製造方法。 - 請求項1乃至7の何れかに記載の吸収性物品に係る複合シートの製造方法であって、
前記シートの連続体は、前記搬送方向に沿う方向を周方向として所定の回転軸周りに回転する搬送ロールの外周面に所定の巻き付き角度で巻き付けられて搬送され、
前記第1揺動アームに係る前記第1投入位置及び前記第2揺動アームに係る前記第2投入位置のどちらも、前記巻き付き角度の範囲内に設定されており、
前記第1揺動アームの第1揺動端側ローラーと前記第1支軸部とは、これら両者で前記搬送ロールの前記回転軸を挟むように配置されており、
前記第2揺動アームの第2揺動端側ローラーと前記第2支軸部とは、これら両者で前記搬送ロールの前記回転軸を挟むように配置されていることを特徴とする吸収性物品に係る複合シートの製造方法。 - 搬送方向に連続して搬送されるシートの連続体に対して、弾性帯部材の連続体を所定の蛇行パターンで接合して吸収性物品に係る複合シートを製造する装置であって、
第1支軸部を旋回中心として前記搬送方向と交差する方向に揺動する第1揺動アームを介して、第1弾性帯部材の連続体をシートの連続体に向けて送りつつ面接触させて接合する第1案内部材と、
第2支軸部を旋回中心として前記搬送方向と交差する方向に揺動する第2揺動アームを介して、第2弾性帯部材の連続体を前記シートの連続体に向けて送りつつ面接触させて接合する第2案内部材と、を備え、
前記第1揺動アームは、該第1揺動アームの揺動端側に設けられた第1揺動端側ローラーと、前記第1支軸部側に設けられた第1支軸部側ローラーと、を有し、
前記第2揺動アームは、該第2揺動アームの揺動端側に設けられた第2揺動端側ローラーと、前記第2支軸部側に設けられた第2支軸部側ローラーと、を有し、
第1供給ルートで前記第1支軸部側ローラーに向けて供給された前記第1弾性帯部材の連続体が、順次、前記第1支軸部側ローラーの外周面及び前記第1揺動端側ローラーの外周面に掛け回されるとともに、該第1揺動端側ローラーにより進行方向を反転された後に前記シートの連続体上に投入されて接合され、
第2供給ルートで前記第2支軸部側ローラーに向けて供給された前記第2弾性帯部材の連続体が、順次、前記第2支軸部側ローラーの外周面及び前記第2揺動端側ローラーの外周面に掛け回されるとともに、該第2揺動端側ローラーにより進行方向を反転された後に前記シートの連続体上に投入されて接合され、
前記第1揺動アームが前記第1弾性帯部材の連続体を前記シートの連続体上に投入する第1投入位置と、前記第2揺動アームが前記第2弾性帯部材の連続体を前記シートの連続体上に投入する第2投入位置とは、互いに、前記搬送方向に関して異なっていることを特徴とする吸収性物品に係る複合シートの製造装置。
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EP10758386.6A EP2415431B1 (en) | 2009-04-03 | 2010-03-10 | Method and device for manufacturing composite sheet for absorptive article |
US13/262,653 US8623168B2 (en) | 2009-04-03 | 2010-03-10 | Manufacturing method and manufacturing apparatus of composite sheet of absorbent article |
EA201101445A EA201101445A1 (ru) | 2009-04-03 | 2010-03-10 | Способ изготовления и устройство для изготовления композитного листа для впитывающих изделий |
UAA201112618A UA106982C2 (uk) | 2009-04-03 | 2010-03-10 | Спосіб виготовлення композитного листового матеріалу абсорбуючого виробу |
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EP3095423B1 (en) * | 2014-01-14 | 2019-03-13 | Koyo Corporation | Disposable pant-type underwear, and manufacturing method therefor |
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MX2019002508A (es) * | 2016-09-30 | 2019-06-24 | Kimberly Clark Co | Aparato y metodo para aplicar una primera trama a una trama base en un patron no lineal. |
US11313062B2 (en) | 2016-09-30 | 2022-04-26 | Kimberly-Clark Worldwide, Inc. | Apparatus and method for applying a first web to a base web in a nonlinear pattern |
CN109977521B (zh) * | 2019-03-20 | 2023-02-03 | 江苏科技大学 | 一种谐波减速器波发生器外轮廓的设计方法 |
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JP5277052B2 (ja) | 2013-08-28 |
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US8623168B2 (en) | 2014-01-07 |
KR20120018297A (ko) | 2012-03-02 |
EA201101445A1 (ru) | 2012-05-30 |
CN102378608A (zh) | 2012-03-14 |
US8763669B2 (en) | 2014-07-01 |
CN102378608B (zh) | 2014-04-02 |
US20120090779A1 (en) | 2012-04-19 |
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US20130299096A1 (en) | 2013-11-14 |
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EP2415431B1 (en) | 2015-09-02 |
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