Abstract: The invention relates to a transparent, biaxially oriented polyester film with a base layer B which is composed of at least 80% by weight of a thermoplastic polyester, and with at least one outer layer A. Another polymeric layer made from a copolymer crosslinked using an acrylic and/or methacrylic compound, has been applied to that side of the film opposite to the outer layer A. The film has low oxygen transmission and exhibits very good adhesion between the respective layers. The coated film moveover has low coefficient of friction, excellent windability, and excellent antistatic performance. It is particularly suitable for packaging purposes, specifically for packaging foodstuffs or other consumable items. The invention further relates to a process for the production of the film.

Abstract: The invention relates to a white, biaxially oriented film made from a crystallizable thermoplastic with high whiteness, the thickness of the film being in the range from 10 to 500 &mgr;m. The film comprises at least one rutile-type titanium dioxide as pigment and an optical brightener, with or without other additives, and has at least one additional functionality. The expression “additional functionality” includes UV resistance, yellowing resistance, photooxidative stability, flame retardancy, and sealability. This film may have one or more of the functional properties. All of these films are capable of cost-effective thermoforming, have good orientability, and have very good optical and mechanical properties. The invention further relates to a process for its production.

Abstract: The invention relates to transparent, biaxially oriented and heat-set films having one or more layers and compris, as main constituent, at least one crystallizable thermoplastic, in particular a polyester, and also comprise at least one hydrolysis stabilizer. The hydrolysis stabilizer is preferably a phenolic compound, an oxazoline, and/or a monomeric or polymeric carbodiimide, where appropriate combined with an organic phosphite. It is preferably added in the form of a masterbatch. The film exhibits low longitudinal and transverse shrinkage. On exposure to moisture and heat it shows practically no embrittlement and retains its ultimate tensile strength. The additional functionality is preferably that the film has been made UV-resistant, or flame-retardant, or on one side or on both sides has been coated, or is sealable, and/or has been corona- or flame-treated.