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发明授权
CN107848193B 聚酯膜 有权

聚酯膜
摘要：
本发明涉及主收缩方向的150℃热收缩率为15％以上、并且与主收缩方向正交的方向的150℃热收缩率小于15％、并且主收缩方向的90℃热收缩率为14％以下的聚酯膜，以及主收缩方向的150℃热收缩率为15％以上、并且与主收缩方向正交的方向的150℃热收缩率小于15％、并且通过温度调制DSC获得的玻璃化转变温度为100℃以上的聚酯膜。本发明能够提供在涂布工序、干燥工序等工序温度为90℃左右时不发生收缩或收缩率小、在收缩工序温度下大幅收缩的聚酯膜。
摘要（英）：

A polyester film having at least 15% thermal shrinkage at 150°C in the primary shrinkage direction, less than 15% thermal shrinkage at 150°C in a direction orthogonal to the primary shrinkage direction, and no more than 14% thermal shrinkage at 90°C in the primary shrinkage direction; and a polyester film having at least 15% thermal shrinkage at 150°C in the primary shrinkage direction, less than 15% thermal shrinkage at 150°C in a direction orthogonal to the primary shrinkage direction, and a glass transition temperature of at least 100°C obtained by temperature-modulated DSC. A polyester film having little or no shrinkage at 90°C being the processing temperature for the coating step and drying step, etc., and having great shrinkage at the shrinkage step temperature.

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