White biaxially oriented polyester film especially for use as a cover for yoghurt pots has a base layer containing a white pigment and a matte cover layer containing a white pigment and also an antiblocking agent

摘要

A white biaxially-oriented polyester film comprises (A) a base layer containing a white pigment at 3-15 wt.%; and (B) a matte cover layer containing a white pigment at 1-15 wt.% and also an antiblocking agent (1-7 wt.%) of average particle diameter (d50) 2-10 mu .