发明名称 |
Polypropylene spa shell manufacturing method |
摘要 |
A process of forming a spa shell by selecting a coextruded polypropylene sheet, selectively heating the sheet, vacuum forming the heated sheet on a deep draw female mold to form a molded spa shell shape, flame treating one surface of the molded shell shape, heating the flame-treated surface, and applying a layer of polyurethane foam to the heated surface.
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申请公布号 |
US5514315(A) |
申请公布日期 |
1996.05.07 |
申请号 |
US19940282576 |
申请日期 |
1994.07.29 |
申请人 |
WATKINS MANUFACTURING CORPORATION |
发明人 |
WATKINS, JEFFREY K.;CUMISKEY, WALTER R.;MCCARTHY, VICTOR B. |
分类号 |
B29C44/12;B29C51/10;B29C51/14;B29C51/42;B29C59/08;(IPC1-7):B29C51/10 |
主分类号 |
B29C44/12 |
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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