| 发明名称 |
Method of preforming a cover member of can-shaped container. |
| 摘要 |
<p>A method of preforming a cover for a can, the cover is formed from a planar base having a metallic barrier layer and resin layers on either side thereof. The base is first premolded to have a flat bottom recess, a cylindrical sidewall, and preferably an upper flap portion. In the premolding the base is stretched no more than by a factor of 1.8. Then a resin is injection molded over the premolded base to form either a uniform bottom cover or a top cover with a tab.</p> |
| 申请公布号 |
EP0256499(A2) |
申请公布日期 |
1988.02.24 |
| 申请号 |
EP19870111632 |
申请日期 |
1987.08.11 |
| 申请人 |
SHOWA DENKO KABUSHIKI KAISHA |
发明人 |
ISHIWATARI, KIYOKAZU SHOWA DENKO K.K.;HAMADA, YOSHITSUGU SHOWA DENKO K.K.;YAMADA, OSAMU SHOWA DENKO K.K. |
| 分类号 |
B29C45/16;B29C45/14;B29C45/17;B29L9/00;B29L22/00;B29L31/56;B65D17/34;B65D17/347;B65D17/353 |
主分类号 |
B29C45/16 |
| 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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