Invention Grant
US07871230B2 Mold device, easy-open end, method of manufacturing easy-open end, and laminated steel sheet for easy-open end
有权
模具装置，易开端，易开端制造方法，以及容易开口端的层压钢板
- Patent Title: Mold device, easy-open end, method of manufacturing easy-open end, and laminated steel sheet for easy-open end
- Patent Title (中): 模具装置，易开端，易开端制造方法，以及容易开口端的层压钢板
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Application No.: US11662637Application Date: 2004-11-22
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Publication No.: US07871230B2Publication Date: 2011-01-18
- Inventor: Hiroshi Kubo , Katsumi Kojima , Yasuhide Oshima , Yoshihiko Yasue , Hiroki Iwasa
- Applicant: Hiroshi Kubo , Katsumi Kojima , Yasuhide Oshima , Yoshihiko Yasue , Hiroki Iwasa
- Applicant Address: JP Tokyo
- Assignee: JFE Steel Corporation
- Current Assignee: JFE Steel Corporation
- Current Assignee Address: JP Tokyo
- Agency: Young & Thompson
- Priority: JP2004-279241 20040927
- International Application: PCT/JP2004/017662 WO 20041122
- International Announcement: WO2006/035514 WO 20060406
- Main IPC: B21D51/44
- IPC: B21D51/44
Abstract:
The mold apparatus has a pair of upper and lower molds being used for forming a score on one side surface of an easy-opening can end fabricated by a laminated metal sheet. The upper mold has a convex part for forming the score, and the cross sectional shape of the convex part at the portion contacting the laminated metal sheet is composed of a curve having a change rate of inclination of 0.08 or smaller to the upper surface of the facing lower mold, or having the curve and a straight line. The formed score has a maximum width of 0.80 mm or smaller.
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