公开(公告)号：US4986860A

公开(公告)日：1991-01-22

申请号：US243997

申请日：1988-09-13

申请人： Hirofumi Akimoto ,  Sadayuki Takeyama ,  Toshimichi Hiki ,  Masayuki Kondo

发明人： Hirofumi Akimoto ,  Sadayuki Takeyama ,  Toshimichi Hiki ,  Masayuki Kondo

IPC分类号： B32B5/18 ,  B29C44/06 ,  B29C69/00 ,  B32B5/20 ,  B32B27/08 ,  B32B27/30 ,  B32B37/15 ,  C08J5/12 ,  C08J9/00 ,  C08J9/06 ,  C08J9/10 ,  C08J9/34

CPC分类号： B32B37/153 ,  B29C44/50 ,  B32B27/08 ,  C08J9/0028 ,  C08J9/0061 ,  C08J9/34 ,  B29K2027/06 ,  B29L2007/00 ,  B29L2009/00 ,  C08J2327/06 ,  C08J2427/00 ,  Y10T428/249992

摘要： A method for producing a laminated material including a lower layer of highly-expanded plasticized polyvinyl chloride with cross-linking and a surface layer of thermoplastic resin sheet laminated on an upper surface of said lower layer, said method including the steps of: heating and kneading raw materials for the lower layer in an extruder, the raw materials excluding a cross-linking agent and a blowing agent; adding the cross-linking agent and the blowing agent; heating and kneading the obtained material at or less than a reacting temperature of the cross-linking agent and a decomposition temperature of the blowing agent to obtain a sheet; heating the sheet to cross-link and expand the sheet to form the lower layer of cross-linked highly-expanded plasticized polyvinyl chloride; and laminating the surface layer of the thermoplastic resin on the upper surface of the lower layer. The polyvinyl chloride resin is (A) a polyvinyl chloride resin having reacting groups in its molecules, or (B) a mixture of a polyvinyl chloride resin having no reacting groups in its molecules and a thermoplastic resin having reacting groups in its molecules.