发明授权
- 专利标题： Pressless injection molding
- 专利标题（中）： 无压注塑
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申请号： US645762申请日： 1975-12-31
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公开(公告)号： US4014974A公开(公告)日： 1977-03-29
- 发明人: Lawrence C. Cessna, Jr.
- 申请人： Lawrence C. Cessna, Jr.
- 申请人地址： DE Wilmington
- 专利权人： Hercules Incorporated
- 当前专利权人： Hercules Incorporated
- 当前专利权人地址： DE Wilmington
- 主分类号： B29C45/70
- IPC分类号： B29C45/70 ; B29F1/06
摘要：
A method of injection molding wherein a pair of separable mold plates are initially urged together and fluid plastic is injected into a mold cavity formed between the mold plates to form an article. The injection pressure of the fluid plastic is utilized to generate forces sufficient to overcome the internal forces urging the mold plates apart and thus hold the mold plates together until the material being molded solidifies either by cooling, chemical reaction or phase change.
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