- 专利标题: Process for manufacturing multilayer pellets and use of the multilayer pellets
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申请号: US10703630申请日: 2003-11-10
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公开(公告)号: US06986945B2公开(公告)日: 2006-01-17
- 发明人: Naohiko Mushiake , Kenji Kodama , Hiroyuki Mori
- 申请人: Naohiko Mushiake , Kenji Kodama , Hiroyuki Mori
- 申请人地址: JP Osaka
- 专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人地址: JP Osaka
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: JP11-180924 19990625; JP11-288475 19991008
- 主分类号: B32B5/16
- IPC分类号: B32B5/16 ; B27N3/02
摘要:
A process for manufacturing multilayer pellets having a core-sheath structure with a molding material forming a sheath which covers the outer circumference of another molding material forming a core, which includes (a) supplying the core material and the sheath material to a die extruder having multiple extrusion-forming parts arranged along a circumference, (b) extruding multiple multilayer strands from the extrusion-forming parts by covering around the outer circumference of the core material concentrically with the sheath material, and (c) cutting the extruded multilayer strands to manufacture multilayer pellets.
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