发明授权
- 专利标题： Methods for making an easy-opening can end
- 专利标题（中）： 方便开放的方法可以结束
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申请号： US10103217申请日： 2002-03-20
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公开(公告)号： US06837093B2公开(公告)日： 2005-01-04
- 发明人: Yuji Yamasaki , Masayoshi Kurihara , Masahisa Fujikake , Yoshinori Yomura , Reiko Sugihara , Yutaka Mihara
- 申请人： Yuji Yamasaki , Masayoshi Kurihara , Masahisa Fujikake , Yoshinori Yomura , Reiko Sugihara , Yutaka Mihara
- 申请人地址： JP Tokyo
- 专利权人： NKK Corporation
- 当前专利权人： NKK Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Frishauf, Holtz, Goodman & Chick, P.C.
- 优先权： JP9-217349 19970812; JP9-246673 19970911; JP9-246674 19970911; JP9-246675 19970911; JP9-246676 19970911; JP9-360778 19971226; JP9-360779 19971226
- 主分类号： B21D51/38
- IPC分类号： B21D51/38 ; B21D51/44 ; B65D17/34
摘要：
A method for making an easy-opening can end comprising providing an upper die and a lower die, at least one of the upper die and the lower die having a curved surface with a radius of 0.1 to 1 mm at the tip portion thereof, the other die having a flat surface at the tip portion thereof; and press-forming an end panel by using the upper die and the lower die to form a score on the upper surface or the lower surface of the end panel so that the end panel has a thickness of 0.025 to 0.08 mm at the thinnest portion thereof.
公开/授权文献
- US20020170913A1 Methods for making an easy-opening can end 公开/授权日：2002-11-21
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