发明名称 |
PAPER MOLDING MANUFACTURING METHOD AND DEVICE THEREFOR |
摘要 |
The objective of the present invention is to provide a method of forming a pressed paper piece by deep drawing a sheet of blank that is primarily made of paper in use of a punch and a die, and a production apparatus for implementing the method, whereby no distinguishable wrinkles are formed in upright portions of the pressed paper piece. The method of producing a pressed paper piece according to the present invention, implemented when deep drawing a sheet-like blank that is primarily made of paper in use of a punch and a die, includes maintaining a predetermined gap between a first blank holder and the die in an outer peripheral region of a process portion of the blank and applying a pressure to a radially inner region thereof via a second blank holder, thereby reducing wrinkling by an effect of integrated functions exerted in both regions of the blank. |
申请公布号 |
EP2810768(A1) |
申请公布日期 |
2014.12.10 |
申请号 |
EP20130743394 |
申请日期 |
2013.01.10 |
申请人 |
TOYO SEIKAN GROUP HOLDINGS, LTD.;TOKAN KOGYO CO., LTD. |
发明人 |
TAKAO, Kenichi;KUNIHIRO, Ichiro;OGAWA, Masahiro;OKABE, Seiji |
分类号 |
B29C57/12;B29D22/00;B29K1/00;B29L31/00;B31F1/00 |
主分类号 |
B29C57/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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