发明名称 |
Method for molding hollow shaped bodies |
摘要 |
Molding a hollow shaped body which has a skin made of a synthetic resin and a hollow portion therein by a mold block provided with a mold cavity in the shape of the hollow shaped body, a tub into which an excess amount of the synthetic resin can flow and a small flow path communicating between the mold cavity and the tub. The process includes forming the skin of the hollow shaped body by injecting a molten synthetic resin into the mold cavity to fill up the cavity. Thereafter, a gas is introduced into the injected synthetic resin to thereby form the hollow portion. The gas injection forces a part of the synthetic resin out of the mold cavity and into the tub through the small flow path.
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申请公布号 |
US5262105(A) |
申请公布日期 |
1993.11.16 |
申请号 |
US19910647668 |
申请日期 |
1991.01.29 |
申请人 |
TOYODA GOSEI CO., LTD. |
发明人 |
KOMIYAMA, CHIAKI;NAGANO, AKIYOSHI;NADA, SADAO;MUKAI, HIROSHI;FUKAMACHI, HIDETAKA;NARUKAWA, HIROHISA;YOSHIDA, AKIHIRO |
分类号 |
B29C45/14;B29C45/17;(IPC1-7):B29C45/16;B29C49/20;B29D22/00;B32B31/00 |
主分类号 |
B29C45/14 |
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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