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公开(公告)号:US06709740B2
公开(公告)日:2004-03-23
申请号:US10079770
申请日:2002-02-21
IPC分类号: B32B2706
CPC分类号: B32B27/36 , B32B27/20 , Y10T428/24967 , Y10T428/25 , Y10T428/254 , Y10T428/256 , Y10T428/257 , Y10T428/258 , Y10T428/259 , Y10T428/265 , Y10T428/31786 , Y10T428/31797 , Y10T428/31855 , Y10T428/31931
摘要: Ultra low haze, co-extruded, thermoplastic polymer film prepared by co-extrusion of a blend of polyethyleneterephthalate with organic and inorganic fillers in at least one skin layer on a virtually particle-free polyethyleneterephthalate core layer; the inorganic fillers are aluminum oxide particles and/or silicon oxide of average particle size of about 0.035 &mgr;m to about 0.3 &mgr;m, and wherein particles of the organic filler have a particle size of less than or equal to about 0.8 &mgr;m and are present in an amount less than about 0.04% by weight, based on the weight of the polyethyleneterephthalate, the skin layer being less than about 3 &mgr;m in thickness.