Invention Grant
- Patent Title: Method for producing stretchable sheet
- Patent Title (中): 拉伸片制造方法
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Application No.: US12444657Application Date: 2007-12-07
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Publication No.: US08012388B2Publication Date: 2011-09-06
- Inventor: Kenichi Akaki , Yoshihiko Matsumoto , Shinichi Ishikawa
- Applicant: Kenichi Akaki , Yoshihiko Matsumoto , Shinichi Ishikawa
- Applicant Address: JP Ehime
- Assignee: Uni-Charm Corporation
- Current Assignee: Uni-Charm Corporation
- Current Assignee Address: JP Ehime
- Agency: Lowe, Hauptman, Ham & Berner, LLP
- Priority: JP2006-347471 20061225
- International Application: PCT/JP2007/073693 WO 20071207
- International Announcement: WO2008/078533 WO 20080703
- Main IPC: B29C55/04
- IPC: B29C55/04 ; B29C55/06 ; B29C71/00

Abstract:
A stretchable sheet having a large stretch amount is produced by increasing a drawing amount given to the nonwoven fabric. A method for producing the stretchable sheet from a nonwoven fabric containing a plurality of types of fibers, that is the nonwoven fabric having a longitudinal direction, a width direction and a thickness direction. The method includes a first drawing step of drawing the nonwoven fabric in the longitudinal direction by applying a tension in the longitudinal direction of the nonwoven fabric, and a second drawing step of drawing, in the longitudinal direction, the nonwoven fabric that has been drawn in the first drawing step with a plurality of teeth formed on outer circumferential faces of each of a pair of gear rolls, the drawing being performed by passing the nonwoven fabric through a gap between the gear rolls that rotate while the teeth are being engaged with one another.
Public/Granted literature
- US20100065984A1 METHOD FOR PRODUCING STRETCHABLE SHEET Public/Granted day:2010-03-18
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