发明名称 |
Process for preparing structural, heat-insulating shaped bodies, and bodies obtained thereby |
摘要 |
A process for preparing structural, heat-insulating shaped bodies which does not necessarily require the use of a foamed heat-insulating material obtained by the use of blowing agents belonging to the class of chlorofluorocarbons. The process includes inserting a heat-insulating pre-molded core inside a tubular element made from an extruded thermoplastic polymer; placing the extruded tubular element containing the pre-molded core into a blow-molding mold; and molding the tubular element into a shell by blow-molding. By subsequent mold closure, the shell adheres to the pre-molded core. An alternative process is disclosed for adhering the tubular element and pre-formed core by closing the mold and drawing a vacuum within the tubular element.
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申请公布号 |
US5219513(A) |
申请公布日期 |
1993.06.15 |
申请号 |
US19910794836 |
申请日期 |
1991.11.21 |
申请人 |
CENTRO SVILUPPO SETTORI IMPIEGO S.R.L. |
发明人 |
ADDEO, ANTONIO;BONVIVI, ALBERTO;MASCIA, FRANCESCO;PINETTI, LUCIO |
分类号 |
B29C47/00;B29C49/00;B29C49/20;B29C63/18;B29C70/70 |
主分类号 |
B29C47/00 |
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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