发明名称 |
OPAQUE, LAMINATED AND STRETCHED PRODUCTS,AND METHOD FOR MAKING THEM |
摘要 |
<p>Opaque laminated and stretched products having a total light transmittance of 50 % or less are obtained laminating at least one side of a layer obtained from a composition in which a crystalline polypropylene is blended with a cyclopentadiene type petroleum resin having a softening point of 160 DEG C or higher, as measured by the ring-and-ball method, in an amount of 3 to 30 % by weight based on the total weight of both, with a layer obtained from a crystalline propylene copolymer having a crystalline melting point lower than that of said crystalline polypropylene by 10 DEG C or more, and, then, stretching the resuting laminate at a temperature lower than the crystalline melting point of the crystalline polypropylene and the softening point of the cyclopentadiene type petroleum resin and at a stretching ratio of 2 or higher in at least a uniaxial direction.</p> |
申请公布号 |
KR0137865(B1) |
申请公布日期 |
1998.04.27 |
申请号 |
KR19900013382 |
申请日期 |
1990.08.29 |
申请人 |
CHISSO CORPORATION |
发明人 |
YAMADA, KAZUHIRO;ISHIBASHI, DADAO |
分类号 |
B29C55/02;B29K23/00;B29L9/00;B32B27/32;(IPC1-7):B32B27/32 |
主分类号 |
B29C55/02 |
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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