Abstract: A method including: a conveying step of conveying a continuous sheet to be a component of a disposable worn article in a longitudinal direction; a printing step of repeatedly printing a predetermined pattern by spraying ink from a first group of nozzles of an inkjet print head onto a surface of the continuous sheet; and a flushing step of performing a flushing operation of spraying ink from at least a second group of nozzles of the head onto the surface of the continuous sheet.

Abstract: In a method and device for manufacturing an absorbent material, the degree of freedom in design can be increased by expanding a modifiable distribution pattern of an SAP and broadening the range in which the performance of the absorbent material can be modified. Pulverized pulp is suctioned in a predetermined pattern to form a pulp layer in which the pulp is fiber-laminated. A first distribution opening through which a first distribution device discharges a first SAP and a second distribution opening through which a second distribution opening discharges a second SAP are provided facing the pulp layer, and the first and second SAPs are distributed onto the pulp layer through the first and second distribution openings while moving the pulp layer relative to the first and second distribution openings. The first and second distribution devices can control the discharge amounts of the first SAP and the second SAP, respectively.

Abstract: A plurality of folding units is arranged in a circumferential direction of a drum that rotates about an axis. Each of the folding units includes: a pad for holding one part of a workpiece on a pad surface; a first folding member and a second folding member each having a folding surface for folding a different part of the workpiece so as to stack the different part over the one part; and a pivot shaft arranged parallel to the pad surface. The first folding member, the second folding member, and the pivot shaft are configured to be rotated together until the folding surface reaches a facing position and a facing posture at which the folding surface faces the pad surface. The pivot shaft is configured to be displaced in a diameter direction of the drum crossing the pad surface.

Abstract: A method for manufacturing an around-torso portion of a worn article, including the steps of; intermittently conveying a plurality of first sheets by a first drum; conveying a preceding second sheet, of a plurality of second sheets, toward a junction with the first drum by a first pad of a second drum, and conveying the preceding second sheet so that the male touch fastener at the rear end of the preceding second sheet overlaps with the female touch fastener at the front end of one first sheet, of the plurality of first sheets; and conveying a subsequent second sheet, of the plurality of second sheets, toward the junction with the first drum by a second pad of the second drum, and conveying the subsequent second sheet so that the male touch fastener at the front end of the subsequent second sheet overlaps with the female touch fastener at the rear end of the one first sheet.

Abstract: A stretchable sheet 10 includes: a plurality of attached portions 3 spaced apart from each other in the direction of stretch Df, wherein the first surfaces 1f and 2f of a pair of sheets 1 and 2 are attached to each other by being welded without using an adhesive, at the attached portions 3, the attached portions 3 hold elastic members F, and the attached portions 3 extend in a direction Dp crossing the direction of stretch Df of the elastic members F; and a plurality of folds P that appear between the attached portions 3 while the elastic members F are shrunk, wherein the attached portions 3 include: a plurality of strongly-attached portions 3s arranged on opposite sides of each elastic member F in the crossing direction Dp; and a plurality of weakly-attached portions 3w arranged between adjacent elastic members F and between adjacent strongly-attached portions 3s.

Abstract: A card manufacturing method includes feeding a reference sheet serving as a reference for alignment; feeding a first continuous sheet having a plurality of patterns repeatedly printed as one cycle thereon; producing a laminated sheet by laminating the first continuous sheet on the reference sheet; successively detecting a position of each one of the repeatedly printed patterns by detection means; adjusting such that the patterns are at predetermined positions with respect to the reference sheet by controlling a feeding speed of the first continuous sheet according to a detection result on the positions of the patterns; and producing a card by cutting the laminated sheet for each of the patterns, the patterns being printed so that plural patterns are repeatedly printed as one cycle, the adjustment being performed for each cycle made up of the plurality of patterns.

Abstract: In a composite sheet manufacturing device, a second roller having a plurality of first projections and a third roller are disposed so as to be adjacent to a first roller having multiple recessed areas. The outer diameters of the first and third rollers are the same size. The third roller is joined to the first roller with a first gear pair therebetween, so as to rotate at the same rotation frequency as that of the first roller. A first sheet that is fed in between the first roller and the second roller is shaped by being pushed into the recessed areas of the first roller by the first projections of the second roller. A second sheet is then superimposed onto the first sheet and is passed through the space between the first roller and the third roller, and the first and second sheets are thereby bonded to each other.

Abstract: The present layered stretchable sheet includes: a plurality of attachment portions at which a pair of non-woven fabrics and a film are thermally bonded together, wherein each one of the attachment portions includes at least one thermal bonding area where the pair of non-woven fabrics and the film are thermally bonded together; at least one boundary line that defines the thermal bonding area; a first vent that is defined by a first opening of the film appearing in a stretched state of the film along the boundary line and that exerts air permeability; and a second vent that is defined by a second opening where a part of the film is absent, the second opening being adjacent to the thermal bonding area and being delimited by the boundary line, wherein the second vent exerts air permeability both in the stretched state and in a non-stretched state.

Abstract: In a manufacturing method, resin in a molten state which becomes a film raw material is caused to hang down from a discharge port of a discharger and the film-like film raw material is continuously discharged, a sheet is conveyed along a sheet pass line, a tip part of the film raw material is formed by cutting and removing an initially formed part of the initially formed film raw material, the tip part is overlapped on the sheet on the sheet pass line, the sheet and the film raw material in a mutually overlapping state are conveyed along the sheet pass line, and the sheet and the film raw material are introduced to a joining part from the sheet pass line.

Abstract: A method for manufacturing an absorbent core uses a feed device feeding crushed fiber, a first drum provided with a first area, where the crushed fiber is sucked and stacked, and a second drum provided with a second area, where the crushed fiber is sucked stacked, the second area being smaller than the first area, the method includes a step of forming a thick portion on the second area of the second drum by stacking the fiber fed from the feed device; a step of transferring the thick portion to a predetermined position in the first area; and a step of forming a thin portion on the first area of the first drum by stacking the fiber fed from the feed device around the transferred thick portion with the transferred thick portion placed on the first area.

Abstract: A device for manufacturing a layered material including an elastic thread sandwiched between a pair of sheets, including: a pair of nip rolls arranged with their axes parallel to each other for nipping the elastic thread between the pair of sheets being conveyed in a conveyance direction; a needle arranged upstream of the nip roll in the conveyance direction for guiding and arranging the elastic thread between the pair of sheets while dispensing the elastic thread through a through hole, through which the elastic thread passes; a needle body that holds the needle; a reciprocating section, to which the needle body is attached, for reciprocating in a width direction, which intersects with the conveyance direction; and a stabilizer that stabilizes the reciprocation of the reciprocating section, wherein the stabilizer is a non-contact-type guide.

Abstract: A control is performed to drive a horn via an ultrasonic wave generator so as to apply ultrasonic energy to a web in one of an outward path and a return path of an anvil and not to apply ultrasonic energy to the web in the other one of the outward path and the return path.

Abstract: An apparatus for manufacturing an absorbent core includes: a dispenser for dispensing a fiber; a fiber-stacking drum for stacking the dispensed fiber on the outer circumferential surface while sucking the fiber toward an inside; and a fixed frame for rotatably supporting the fiber-stacking drum. The fiber-stacking drum includes: a rotation shaft; a wheel attached to the distal end of the rotation shaft; and a fiber-stacking ring provided on an outer circumference portion of the wheel for stacking the fiber A suction chamber is fixed to the fixed frame The suction chamber is arranged on an inner side of the fiber-stacking ring and produces a suction force toward an inner circumference of the fiber-stacking ring. The fiber-stacking drum is supported by the fixed frame so as to be slidable in an axial direction of the rotation shaft; and the wheel is removably attached to the distal end of the rotation shaft via a fastener.

Abstract: The present welding system includes: a transport device that transports a work in a state where a plurality of webs are overlaid on each other; an anvil roller that includes an anvil which intermittently makes contact with the first surface of the work being transported; an ultrasonic horn that is opposite the second surface of the work and that cooperates with the anvil to apply vibration energy to the work so as to intermittently weld the webs; a speed changing device that lowers the transport speed of the work supplied between the horn and the anvil when the welding is performed; and a pressing device that presses the first surface of the work to the anvil when the welding is performed.

Abstract: In a production apparatus, a pass line for conveying a film is formed in parts of both belts wound on common rolls and in contact with each other across the film, a discharge port of a discharger is so provided that the molten resin reaches one first roll, out of a group of first rolls, on a side upstream of the pass line, and the common rolls include a cooling roll for cooling and solidifying the molten resin discharged from the discharge port and having reached the first roll.

Abstract: A conveying method includes first and second pads conveying workpieces with speeds of the first and second pads being varied; circumferential velocities of the first pads and the second pads are accelerated by variable speed mechanisms; the first and second pads move and separate in a state in which a distance between the first pad and the second pad, whose speeds were increased, is increased; the circumferential velocities of the first pads and the second pads are decelerated by the variable speed mechanisms; and a first slider and a second slider, which were subjected to deceleration, overlap each other in a part in a circumferential direction, which causes the first pad and the second pad to approach each other, and the first pad and the second pad move and approach each other in this state in which the first pad and the second pad have approached each other.

Abstract: The method of the present invention includes the steps of: arranging a plurality of non-continuous sheets of a predetermined length intermittently and successively in the conveyance direction on the continuous sheet so that the continuous elastic members are sandwiched between the non-continuous sheets and the continuous sheet; in an overlapping area where the non-continuous sheets overlap with the continuous sheet, attaching the continuous sheet and the non-continuous sheets to each other by welding the sheets to each other in a predetermined pattern, thus producing a continuous laminate; and in a non-overlapping area where the non-continuous sheets do not overlap with the continuous sheet, heating the continuous sheet in the same pattern as said pattern.

Abstract: A method including: a step of carrying first and second continuous webs in a predetermined carrying direction; a first slitting step of slitting the first continuous web along a virtual first cut-off line extending the carrying direction, thereby dividing the first continuous web into a wider first divided web and a narrower second divided web; a step of sandwiching an around-torso elastic member extending in a girth direction between the wider first divided web and the second continuous web; a welding step of welding together the first divided web, the second continuous web and the around-torso elastic member intermittently in the carrying direction, thereby producing a layered sheet; and a bonding step of sandwiching an around-leg elastic member meandering relative to the carrying direction between the layered sheet and the narrower second divided web, and attaching the around-leg elastic member thereto by an adhesive, thereby producing a stretchable continuous sheet.

Abstract: A first shaft control section is configured to control rotation of a first support shaft supporting a first roll such that a sheet is unwound from the first roll at a predetermined running speed. A second shaft control section is configured to execute a first rotation control of regulating a rotational speed of a second support shaft supporting a second roll such that a peripheral speed of the second roll coincides with the predetermined running speed of the sheet of the first roll. The second shaft control section is configured to regulate the rotational speed of the second support shaft by acceleration or deceleration such that an adhesive on an outer peripheral surface of the second roll arrives at a pressing position when a target joining portion of the sheet of the first roll meets the pressing position.