发明名称 |
BIAXIAL ORIENTIERTE POLYESTERFOLIE FÜR MEMBRANSCHALTER |
摘要 |
A biaxially oriented polyester film for a membrane switch, which is made from a polyester containing at least 80 mol% of ethylene-2,6-naphthalene dicarboxylate recurring units and which has an endothermic peak with an endothermic energy of at least 0.4 mJ/mg at a temperature of 110 to 160 DEG C. This film is produced by subjecting a biaxially oriented polyester film produced from the above polyester in accordance with a method known per se to the following steps in the order named: (1) the step of heating the film under no strain at a temperature of 150 to 180 DEG C for 1 to 5 hours; and (2) the step of heating the film in an unrolled or rolled state at a temperature of 80 to 122 DEG C for 5 to 200 hours. |
申请公布号 |
DE69830237(T2) |
申请公布日期 |
2006.01.26 |
申请号 |
DE1998630237T |
申请日期 |
1998.11.20 |
申请人 |
TEIJIN LTD., OSAKA |
发明人 |
FURUYA, KOJI;WATANABE, SHINYA;KAWAI, SHINICHI;SUZUKI, KENJI |
分类号 |
B29C55/12;B29C71/02;C08J5/18;H01H13/52;H01H13/70;H01H13/702 |
主分类号 |
B29C55/12 |
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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