White, sealable, thermoformable, biaxially oriented and coextruded polyester film containing a cyclooelfin copolymer, method for producing the same and the use thereof

摘要

The invention relates to a white, sealable, thermodeformable, biaxially oriented and coextruded polyester film that comprises at least one base layer B and at least one sealable cover layer A, wherein at least the base layer B contains a polyester starting compound and a cycloolefin copolymer (COC). The polyester starting compound should contain an increased amount of diethylene glycol, polyethylene glycol or isophthtalic acid. The invention further relates to a method for producing the inventive polyester film and to the use thereof for thernoformed articles, especially on high-speed machines.