公开(公告)号：US20040262802A1

公开(公告)日：2004-12-30

申请号：US10870957

申请日：2004-06-21

Applicant: JSP Corporation

Inventor： Kazuhiko Morita ,  Satoshi Iwasaki ,  Shinpei Arita

IPC: B29C044/24

CPC classification number: B32B27/32 ,  B29C44/22 ,  B32B5/18 ,  B32B27/065 ,  B32B27/18 ,  B32B27/22 ,  B32B37/153 ,  B32B2038/0084 ,  B32B2305/022 ,  B32B2307/21 ,  B32B2323/00

Abstract: A method of producing a composite sheet having a foam layer of a first polyolefin-based resin and a surface layer of a second polyolefin-based resin provided on at least one side of the foam layer and containing a polymeric antistatic agent. The method includes coextruding through die a first melt containing the first polyolefin-based resin and a physical blowing agent and a second melt containing the second polyolefin-based resin, the polymeric antistatic agent and a volatile plasticizer to obtain the composite sheet. The amount of the polymeric antistatic agent is 4 to 100 parts by weight per 100 parts by weight of the second polyolefin-based resin and the amount of the volatile plasticizer is 5 to 50 parts by weight per 100 parts by weight of a total amount of the second polyolefin-based resin and the polymeric antistatic agent. The second polyolefin-based resin has a crystallization temperature of Ta nullnull C.null and a melt viscosity of Ma nullPa.snull, while the polymeric antistatic agent has a crystallization temperature of Tb nullnull C.null and a melt viscosity of Mb nullPa.snull, wherein Ta, Tb, Ma and Mb satisfy the following conditions: Tb

公开(公告)号：US20030104197A1

公开(公告)日：2003-06-05

申请号：US09996777

申请日：2001-11-30

Applicant: JSP CORPORATION

Inventor： Kazuhiko Morita ,  Takashi Muroi ,  Hirotoshi Kakuta

IPC: B32B003/26

CPC classification number: B32B27/32 ,  Y10T428/24942 ,  Y10T428/2495 ,  Y10T428/249976 ,  Y10T428/249977 ,  Y10T428/249986 ,  Y10T428/249988 ,  Y10T428/249991 ,  Y10T428/249992

Abstract: The present invention relates to a sheet or board like multiple layers laminated polyolefin foam having a plurality of polyolefin layers laminated on at least one side of a polyolefin foam by a coextrusion method. More specifically, the present invention relates to said multiple layers laminated polyolefin foam, wherein the thickness of the outermost layer constituting the plurality of polyolefin layers is 5 to 80 nullm, and the density d (g/L) of the polyolefin foam, the melt flow rate null (g/10 min) of the polyolefin constituting the innermost layer among the plurality of polyolefin layers, and the thickness Y (nullm) of the innermost layer of the multiple polyolefin layers satisfy the following relationships (1) to (4). Ynull0.29dnullnullnull(1) 5nullnullnull40 nullnull(2) 70nullYnull300 nullnull(3) 100nulldnull300 nullnull(4)

Abstract translation: 本发明涉及通过共挤出法在聚烯烃泡沫的至少一面层叠多个聚烯烃层的多层层压聚烯烃泡沫的片材或板。 更具体地，本发明涉及所述多层层压聚烯烃泡沫，其中构成多个聚烯烃层的最外层的厚度为5-80μm，聚烯烃泡沫的密度d（g / L），熔体 在多个聚烯烃层中构成最内层的聚烯烃的流量x（g / 10分钟）和多个聚烯烃层的最内层的厚度Y（母体）满足以下关系式（1）至（4） 。 Y <= 0.29dx（1）5 <= x <= 40（2）70 <= Y <= 300（3）100 <= d <= 300（4）