发明申请
- 专利标题： Polyurethane molded roofing structures
- 专利标题（中）： 聚氨酯模制屋顶结构
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申请号： US11047272申请日： 2005-01-31
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公开(公告)号： US20050210789A1公开(公告)日： 2005-09-29
- 发明人: Marian Anghel
- 申请人： Marian Anghel
- 主分类号： B29C45/16
- IPC分类号： B29C45/16 ; B29C70/30 ; B29C70/60 ; B32B27/40 ; E04C1/00 ; E04D5/10
摘要：
The invention describes a structure including a first layer, a third layer and a second layer including a low side and a high side. The first layer comprises a low density polyurethane, the second layer comprises fiberglass and the third layer comprises a high density polyurethane. The first layer is reaction injection molded upon the low side and the third layer is reaction injection molded upon the high side.