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公开(公告)号:US06663733B2
公开(公告)日:2003-12-16
申请号:US09902487
申请日:2001-07-10
IPC分类号: B29C4704
CPC分类号: B32B38/0036 , B29C43/28 , B29C44/321 , B29C44/326 , B29C44/485 , B29C47/0021 , B29C47/522 , B29C53/04 , B32B37/0015 , B32B38/06 , B32B2305/022 , B32B2305/30 , B32B2309/02
摘要: A granular, ground filler of plant origin, such as kenaf fiber, is mixed into a synthetic resin to form a melted synthetic resin Ca, which is extruded from an output port 36 of a low-pressure extruder 30 as an intermediate resin layer C. A first coating material A and a second coating material B are superimposed on the two surfaces of the intermediate resin layer C. Thereafter, both coating materials A and B are pressed and adhered to the melted intermediate resin layer C by a roller press 50.