发明名称 |
Rigid-foam plastic mold and method of preparation |
摘要 |
An inexpensive, cellular plastic mold and method of preparation, wherein the plastic mold comprises male and female mold elements which define a mold cavity therebetween, each of the elements comprising a rigid thermoplastic foam or cellular board material having a smooth, integral, solid layer of a plastic material forming the facing surface of the mold cavity and a relatively thick, solid, supporting layer of a plastic material forming the back surface of the mold elements.
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申请公布号 |
US4538787(A) |
申请公布日期 |
1985.09.03 |
申请号 |
US19830488347 |
申请日期 |
1983.04.25 |
申请人 |
FOX, RICHARD B.;SULLIVAN, JAMES B. |
发明人 |
FOX, RICHARD B.;SULLIVAN, JAMES B. |
分类号 |
B29C33/40;B29C33/56;B29C44/56;B29C51/00;B29C59/02;C08J9/36;(IPC1-7):B29D27/00 |
主分类号 |
B29C33/40 |
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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