发明名称 |
Rotational molding multilayered articles |
摘要 |
A method of rotationally molding a multi-layered article. The outer layer is first rotationally molded and solidified. An inner polymer layer is fed into the mold cavity and an inner layer is rotationally molded to the inner surface of the outer layer. Preferably, the outer layer and inner layer are thermoplastics. The outer layer polymer has a melting point higher than the inner layer polymer. The outer layer is rotationally molded and cooled to below its melt temperature but above the melt temperature of the inner layer polymer. The inner layer is then rotationally molded while the outer layer remains solid.
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申请公布号 |
US4548779(A) |
申请公布日期 |
1985.10.22 |
申请号 |
US19820441811 |
申请日期 |
1982.11.15 |
申请人 |
ALLIED CORPORATION |
发明人 |
STEINBERG, ALBERT H.;PETRUCCELLI, FRANK;LUCAS, MARIANN E.;ZLATKEVICH, LEV |
分类号 |
B29C41/04;B29C41/06;B29C41/22;B32B37/00 |
主分类号 |
B29C41/04 |
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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