Wearing article and production method therefor

Patent metadata

Field	Value
Publication number	US-9750647-B2
Application number	US-201214127668-A
Country	US
Kind code	B2
Filing date	Jun 5, 2012
Priority date	Jun 23, 2011
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

A method for producing a wearing article includes conveying a front-abdominal-portion forming strip and a rear-dorsal-portion forming strip; dividing the front-abdominal-portion forming strip being conveyed, along a dividing line parallel to a width direction thereof; holding a relative positional relationship between two segments of the front-abdominal-portion forming strip on both sides of the dividing line; within a period of implementation of the step of holding, detachably attaching a first attaching-detaching member to the front-abdominal-portion forming strip in such a manner as to cover the dividing line, thereby restricting a relative displacement between the segments of the front-abdominal-portion forming strip on both sides of the dividing line; joining the front-abdominal-portion forming strip and a front region of a crotch portion together; and joining the rear-dorsal-portion forming strip and a rear region of the crotch portion together.

First claim

What is claimed is:

1. A method of producing a wearing article, wherein the wearing article comprises a front abdominal portion disposed on a front abdominal region of a wearer in a worn state, a rear dorsal portion disposed on a rear dorsal region of the wearer in the worn state, and a crotch portion connecting the front abdominal portion and rear dorsal portion together in the worn state, the method comprising:
a strip conveying step of conveying a first strip for forming one of the front abdominal portion and the rear dorsal portion, and a second strip for forming the other, in such a manner as to allow respective longitudinal directions of the first and second strips to become parallel to each other, while applying, to each of the first and second strips, a tension along the longitudinal direction thereof;
a dividing step of dividing the first strip being conveyed, along a dividing line along a width direction of the first strip;
a holding step of holding a relative positional relationship between two segments of the first strip on both sides of the dividing line;
a restricting step of, within a period of implementation of the holding step, detachably attaching a first attaching-detaching member to the first strip in such a manner as to cover the dividing line, thereby restricting a relative displacement between the segments of the first strip on both sides of the dividing line;
a first-end-region joining step of joining the first attaching-detaching member and a first end region of the crotch portion together;
a second-end-region joining step of joining the second strip and a second end region of the crotch portion on a side opposite to the first end region;
a folding step of folding an intermediate region of the crotch portion, thereby superimposing the first and second strips on each other;
a side-sealing step of joining the superimposed first and second strips together on a lateral side of the folded crotch portion;
a cutting step of cutting the superimposed first and second strips in such a manner that a joined section formed in the side-sealing step is left on each of both sides of the folded crotch portion; and
a preparing step of, before the dividing step, preparing a subassembly by assembling together the first attaching-detaching member, and a pair of second attaching-detaching members each attachable and detachable with respect to the first attaching-detaching member, wherein
the restricting step includes joining the pair of second attaching-detaching members of the subassembly, respectively to the segments of the first strip on both sides of the dividing line, the restricting step being implemented after the first-end-region joining step.

2. The method of producing a wearing article according to claim 1 , wherein the restricting step and the second-end-region joining step are concurrently implemented after the first-end-region joining step.

3. The method of producing a wearing article according to claim 2 , wherein
the holding step includes rotating a strip holding roller while allowing the first strip and the second strip to be held on an outer peripheral surface of the strip holding roller, and
the restricting step and the second-end-region joining step include rotating a crotch portion holding roller which holds the crotch portion provided with the subassembly, while allowing an outer peripheral surface of the crotch portion holding roller to be brought into press contact with the outer peripheral surface of the strip holding roller.

4. The method of producing a wearing article according to claim 3 , wherein the dividing step includes rotating a dividing roller having a dividing blade formed on an outer peripheral surface thereof, in such a manner that the dividing blade is brought into press contact with the strip holding roller with a constant cycle.

5. The method of producing a wearing article according to claim 1 , wherein the restricting step and the second-end-region joining step are concurrently implemented after the first-end-region joining step.

6. The method of producing a wearing article according to claim 5 , wherein
the holding step includes rotating a strip holding roller while allowing the first strip and the second strip to be held on an outer peripheral surface of the strip holding roller, and
the restricting step and the second-end-region joining step include rotating a crotch portion holding roller which holds the crotch portion provided with the subassembly, while allowing an outer peripheral surface of the crotch portion holding roller to be brought into press contact with the outer peripheral surface of the strip holding roller.

Assignees

• Umebayashi Toyoshi
• Zuiko Corp

Inventors

• Umebayashi Toyoshi

Classifications

• A61F13/15723

  Partitioning batts; Cutting · CPC title

• A61F13/64

  Straps, belts, ties or endless bands ({A61F13/5605, A61F13/5622}, A61F13/66 take precedence) · CPC title

• A61F13/4906 Primary

  the diaper having an outer chassis forming the diaper and an independent absorbent structure attached to the chassis · CPC title

• A61F13/15756

  Applying tabs, strips, tapes, loops; Knotting the ends of pads · CPC title

• A61F13/5633

  open type diaper · CPC title