公开(公告)号：US5473004A

公开(公告)日：1995-12-05

申请号：US277703

申请日：1994-07-20

申请人： Tadashi Ono ,  Kinji Hasegawa ,  Takeo Asai ,  Yoji Murakami

发明人： Tadashi Ono ,  Kinji Hasegawa ,  Takeo Asai ,  Yoji Murakami

IPC分类号： C08J5/18 ,  C08K3/00 ,  B29C55/00 ,  C08J3/00 ,  C08K3/26 ,  C08L67/02

CPC分类号： C08J5/18 ,  C08K3/0008 ,  C08J2367/02

摘要： A biaxially oriented polyester film comprising a copolyester which contains a lubricant having an average particle diameter of no greater than 2.5 .mu.m and has a melting point of from 210.degree. to 245.degree. C., the film having a plane orientation coefficient of from 0.10 to 0.16, a thermal shrinkage at 150.degree. C. of no higher than 10%, and a density of lower than 1.385 g/cm.sup.3, and optionally a refractive index in a direction of thickness of from 1.495 to 1.530 as well as a film plane refractive index of from 1.61 to 1.66 in all directions.

摘要翻译： 一种双轴取向聚酯膜，其包含含有平均粒径不大于2.5μm并且熔点为210-245℃的润滑剂的共聚酯，该膜的平面取向系数为0.10〜 0.16，在150℃下的热收缩率不高于10％，密度低于1.385g / cm 3，并且可选地在厚度方向上的折射率为1.495至1.530，以及膜平面折射率 指数从1.61到1.66的全方位。