发明名称 |
METHOD FOR PRODUCING LAMINATED POROUS POLYOLEFIN FILM AND LAMINATED POROUS POLYOLEFIN FILM |
摘要 |
Disclosed is a method for producing a laminated porous polyolefin film, the method comprising steps of: providing a pair of tools for thermocompression bonding two resin films therebetween, laminating two films each comprising at least one layer made of a polyolefin resin composition comprising 100 parts by weight of a polyolefin resin having a melt index of 0.1 g/10 min or less and 80 to 300 parts by weight of a filler to form a laminated film by piling and thermocompression bonding the films between the thermocompressing portions of the tools, wherein the surface temperature of each thermocompressing portion is adjusted to a temperature higher than the melting point of the polyolefin resin by from 5 to 25.degree.C during the lamination, and drawing the laminated film to form micropores therein, thereby yielding a porous film. |
申请公布号 |
CA2459448(A1) |
申请公布日期 |
2004.09.06 |
申请号 |
CA20042459448 |
申请日期 |
2004.03.03 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
YAMADA, TAKESHI;KURODA, RYUMA;TAKATA, ATSUHIRO |
分类号 |
B32B27/32;B29C55/02;B32B37/15;(IPC1-7):C08J5/12;C08L23/04;C08F10/02;C08J5/18;C08F10/00;B32B31/20 |
主分类号 |
B32B27/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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