Polyvinyl acetal resin film and multilayer structure articles using the same
    7.
    发明授权
    Polyvinyl acetal resin film and multilayer structure articles using the same 有权
    聚乙烯醇缩醛树脂薄膜和使用其的多层结构制品

    公开(公告)号:US09431560B2

    公开(公告)日:2016-08-30

    申请号:US14008745

    申请日:2012-03-29

    摘要: An object of the present invention is to provide a film that is used as one layer of a multilayer structure articles such as a laminated glass, and a solar cell module, and prevents the intrusion of bubbles and the generation of unfilled portions at the edge portions of the film; and a multilayer structure articles obtained with the use of the film. A polyvinyl acetal resin film, having a thickness distribution in the width direction of 10% or less, and a volatile matter content of 1.0 mass % or less, in which as to a portion of 5% of the total width inside from each of both edges in the width direction, when each portion is heated at 150° C. for 30 minutes, the larger value of the heat shrinkage in the flow direction that is parallel to the film and perpendicular to the width direction is referred to as heat shrinkage MD1, and the other value is referred to as heat shrinkage MD2, and when central portion in the width direction of the film is heated at 150° C. for 30 minutes, the heat shrinkage in the flow direction that is parallel to the film and perpendicular to the width direction is referred to as heat shrinkage MD3, all the heat shrinkage MD1, heat shrinkage MD2, and heat shrinkage MD3 are 3 to 20%.

    摘要翻译: 本发明的目的是提供一种薄膜,其用作层压玻璃和太阳能电池组件等多层结构体的一层,并且能够防止气泡的侵入和在边缘部分产生未填充部分 的电影; 以及使用该膜获得的多层结构物品。 其宽度方向的厚度分布为10%以下,挥发物含量为1.0质量%以下的聚乙烯醇缩醛树脂膜,其中,从两者的总宽度的5%的一部分 边缘在宽度方向上,当每个部分在150℃下加热30分钟时,与膜平行并垂直于宽度方向的流动方向上的热收缩的较大值被称为热收缩率MD1 ,另一个值称为热收缩率MD2,当膜的宽度方向的中心部分在150℃下加热30分钟时,与膜平行的流动方向的热收缩和垂直 称为热收缩率MD3,热收缩率MD1,热收缩率MD2,热收缩率MD3均为3〜20%。