폴리올레핀 수지 발포 시트 및 이의 제조 방법
    5.
    发明公开
    폴리올레핀 수지 발포 시트 및 이의 제조 방법 无效
    聚烯烃树脂泡沫板和生产方法

    公开(公告)号:KR1020020042475A

    公开(公告)日:2002-06-05

    申请号:KR1020010074671

    申请日:2001-11-28

    IPC分类号: B29C44/24

    摘要: PURPOSE: A polyolefin resin foamed sheet and the production method are provided to effectively prevent bubble break in a foamed layer and to stably produce a sheet excellent in surface smoothness. CONSTITUTION: A polyolefin resin foamed sheet comprises a polyolefin foamed layer, and a polyolefin resin non-foamed layer containing 10 percent by weight or more of a recycled polyolefin subjected to at least two cycles of a process comprising melting and solidifying polyolefin selected from the group consisting of polyolefin having long chain branched and polyolefin having a weight-average molecular weight of 1 times 10 raised to the fifth or more. A method of producing a polyolefin resin foamed sheet comprises a polyolefin resin foamed layer and a polyolefin resin non-foamed layer wherein a polyolefin layer(1) containing a foaming agent and a polyolefin layer containing 10 percent by weight or more of a recycled polyolefin subjected to at least two cycles of a process comprising melting and solidifying polyolefin molecular weight of 1 times 10 raised to the fifth or more are co-extruded, and the polyolefin resin layer is foamed.

    摘要翻译: 目的:提供一种聚烯烃树脂发泡片材及其制造方法,能够有效地防止泡沫层中的气泡破裂,稳定地制造表面平滑性优异的片材。 构成:聚烯烃树脂发泡片材包括聚烯烃发泡层和含有10重量%或更多的再循环聚烯烃的聚烯烃树脂非发泡层,其经受至少两个循环的方法,该方法包括熔融和固化选自以下的聚烯烃 由具有长支链的聚烯烃和重均分子量为1×10的聚烯烃组成,提高至第五或更多。 聚烯烃树脂发泡片材的制造方法包括聚烯烃树脂发泡层和聚烯烃树脂非发泡层,其中含有发泡剂的聚烯烃层(1)和含有10重量%以上的再循环聚烯烃的聚烯烃层经受 至少两个循环的方法包括熔融和固化聚合物的分子量为10倍至5倍或更多的聚烯烃分子量,并且聚烯烃树脂层被发泡。