Patent ID: 6936350
Filing Date: 2005-08-30
Classification: B32B,C08L,Y10S,Y10T

Abstract:
1. A white, biaxially oriented, flame-retardant and UV-resistant polyester film comprising at least one layer, wherein at least this layer comprises, based on the weight of this layer, from 8-10% by weight of a cyclo olefin copolymer (COC) based upon a cycloolefin monomer and an active olefin monomer, where the glass transition temperature of the COC is within the range greater than 110 to 270° C., and wherein the layer comprises at least one UV stabilizer as light stabilizer and a flame retardant, where at least the flame retardant is fed directly as a predried, precrystallized masterbatch to the polyester during film production, said layer containing 10-70% by weight of this layer of a regrind formed from said white, biaxially oriented, flame-retardant and UV-resistant polyester film.