Multilayer, white polyester film

Details Multilayer, white polyester film Multilayer, white polyester film

2007-03-30

2010-11-09

Chen, Vivian (Department: 1787)

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

C428S323000, C428S328000, C428S480000, C428S910000, C524S418000, C524S423000, C524S436000, C264S173160, C264S288400, C264S290200

Reexamination Certificate

active

07829175

ABSTRACT:
The invention relates to a multilayer, white, biaxially oriented polyester film, which has a base layer B and at least one outer layer (A), wherea) the base layer (B) includes, as sole whitening pigment, a concentration of from 5 to 25% by weight of barium sulfate, andb) the outer layer (A) includes, as sole whitening pigment, a concentration of from 5 to 25% by weight of barium sulfate, and also includes from 0.01 to 4% by weight of antiblocking agent whose median diameter (d50value) is from 2 to 8 μm.

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