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Invention Grant
CN107000270B 聚乙烯醇系聚合物膜及其制造方法 有权

聚乙烯醇系聚合物膜及其制造方法
Abstract:
本发明为PVA膜，其是厚度为50μm以下的PVA膜，将该PVA膜的样品在30℃的水中浸渍30秒钟时的浸渍前的长度方向250mm的部分的长度方向伸长量WMD30为35mm以上且60mm以下，将该PVA膜的样品在30℃的水中浸渍300秒钟时的浸渍前的宽度方向250mm的部分的宽度方向伸长量WTD300为53mm以上且65mm以下。
Abstract(English):

The present invention is a PVA film having a thickness of 50 µm or less, wherein: the amount WMD30 of elongation, in a length direction, of a portion of a sample of the PVA film, said portion having a pre-immersion length of 250 mm in the length direction, when immersed for 30 seconds in 30 °C water, is 35-60 mm, inclusive; and the amount WTD300 of elongation, in a width direction, of a portion of a sample of the PVA film, said portion having a pre-immersion length of 250 mm in the width direction, when immersed for 300 seconds in 30 °C water, is 53-65 mm, inclusive.

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