Method for manufacturing disposable wearing article

• US 7,754,044 B2
• Filed: 08/04/2004
• Issued: 07/13/2010
• Est. Priority Date: 08/06/2003
• Status: Active Grant

• Current Assignee: Zuiko Corporation
• Original Assignee: Zuiko Corporation
• Inventors: Wada, Takao, Itani, Mamoru, Umebayashi, Toyoshi, Kurata, Shuhei
• Primary Examiner(s): Osele; Mark A
• Assistant Examiner(s): Caillouet; Christopher C
• Application Number:
  US10/565,151
• Publication Number:
  US 20060254708A1
• Time in Patent Office: 2,169 Days
• Field of Search: 156/271, 156/259, 156/308.4, 156/164, 156/199, 156/200, 156/201
• US Class Current: 156/259
• CPC Class Codes: A61F 13/15593 having elastic ribbons fixed thereto; Devices for applying the ribbons
• CPC Class Codes: A61F 13/15699 Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
• CPC Class Codes: A61F 13/15723 Partitioning batts; Cutting
• CPC Class Codes: A61F 13/15756 Applying tabs, strips, tapes, loops; Knotting the ends of pads
• CPC Class Codes: A61F 13/49011 the elastic means is located at the waist region
• CPC Class Codes: A61F 2013/49025 having multiple elastic strands
• CPC Class Codes: A61F 2013/49063 the diaper having decoupled components
• CPC Class Codes: Y10T 156/1052 with cutting, punching, tearing or severing
• CPC Class Codes: Y10T 156/1056 Perforating lamina
• CPC Class Codes: Y10T 156/1057 Subsequent to assembly of laminae
• CPC Class Codes: Y10T 156/1062 Prior to assembly
• CPC Class Codes: Y10T 156/1067 Continuous longitudinal slitting
• CPC Class Codes: Y10T 156/1084 of continuous or running length bonded web
• CPC Class Codes: Y10T 156/1087 Continuous longitudinal slitting

Abstract

A method comprising a step of manufacturing an elastic laminated body by laminating two webs and while inserting an elastic member in an extended state in a web length direction in between; a step of cutting the elastic laminated body in a length direction so that a concave portion and a convex portion appear alternately; a step of attaching a cover sheet to bridge between the concave portion and the convex portion of cut first elastic laminated body and second elastic laminated body, respectively; a step of widening the first elastic laminated body and the second elastic laminated body to which the cover sheet is attached; and a step of attaching an absorber onto the cover sheet, lessens the occurrence of wrinkles and creases produced when webs are cut, and eliminates a problem attributed to the occurrence of wrinkles and arising when an absorber is attached.

Claims

1. A method for manufacturing a disposable wearing article, comprising:

a step of cutting a web in a length direction of the web into a first web and a second web, each having concave portions and convex portions alternately;

a step of attaching a cover sheet to the first web and the second web;

a step of spacing the first web and the second web from each other, the cover sheet being expanded as the first web and the second web are spaced; and

a step of attaching an absorber onto the expanded cover sheet.

2. The method for manufacturing a disposable wearing article according to claim 1, wherein:

the cover sheet is provided with slack when attached to bridge between the webs or between the concave and convex portions, the slack being comparable to an expanded amount of the cover sheet generated in the step of spacing the first web and the second web.

3. The method for manufacturing a disposable wearing article according to claim 1, further comprising:

a step of side-sealing both side portions of the first web and the second web while the absorber is in a folded state.

4. The method for manufacturing a disposable wearing article according to claim 1, further comprising:

a step of forming leg hole portions.

5. A method for manufacturing a disposable wearing article, comprising:

a step of manufacturing an elastic laminated body by laminating two webs, an elastic member being in an extended state in a web length direction between the two webs;

a step of cutting the elastic laminated body in a length direction of the elastic laminated body into a first elastic laminated body and a second elastic laminated body, each having concave portions and convex portions alternately;

a step of attaching a cover sheet to the concave portion of the first elastic laminated body and the convex portion of the second elastic laminated body;

a step of spacing the first elastic laminated body and the second elastic laminated body from each other, the cover sheet being expanded as the first elastic laminated body and the second elastic laminated body are spaced; and

a step of attaching an absorber onto the expanded cover sheet.

6. The method for manufacturing a disposable wearing article according to claim 5, wherein:

the cover sheet is provided with slack when attached to bridge between the webs or between the concave and convex portions, the slack being comparable to an expanded amount of the cover sheet generated in the step of spacing the first web and the second web.

7. The method for manufacturing a disposable wearing article according to claim 5, wherein:

the elastic member includes a waist elastic member, a body-fitting elastic member, and a leg peripheral elastic member, and the leg peripheral elastic member is in a state where the leg peripheral elastic member is provided in a linear state or a curved line state in a width direction of the wearing article or in a state having the both states.

8. The method for manufacturing a disposable wearing article according to claim 5, further comprising:

a step of side-sealing both side portions of the first elastic laminated body and the second elastic laminated body while the absorber is in a folded state.

9. The method for manufacturing a disposable wearing article according to claim 5, further comprising:

a step of forming leg hole portions.