发明名称 |
BIAXIALLY STRETCHED POLYPROPYLENE FILM |
摘要 |
<p>A biaxially stretched polypropylene film of the present invention has high stiffness in the film longitudinal direction and can be manufactured by a conventional longitudinal-transverse sequential biaxial stretching method, since the biaxially stretched polypropylene film comprises a polypropylene which comprises a polypropylene having controlled specific values of a melt strength (MS) and a melt flow rate (MFR) at 230°C or consists of a polypropylene having controlled specific values of a melt strength (MS) and a melt flow rate (MFR) at 230°C and/or a Trouton ratio of the polypropylene is controlled at a specific value, moreover, the biaxially stretched polypropylene film contains regulated longitudinal fibrils.</p> |
申请公布号 |
CA2426662(C) |
申请公布日期 |
2011.03.08 |
申请号 |
CA20022426662 |
申请日期 |
2002.05.08 |
申请人 |
TORAY INDUSTRIES, INC. |
发明人 |
MASUDA, JUN'ICHI;TANAKA, SHIGERU;SASAMOTO, TAI;OHKURA, MASATOSHI |
分类号 |
C08J5/18;B29C55/12;B29C55/14;B32B27/32;C08L23/10 |
主分类号 |
C08J5/18 |
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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