Abstract: An at least three-layer biaxially oriented polyester film is provided that includes a layer B, a rough outer layer A and a smooth outer layer C, with the outer layers A and C each being external layers arranged on the opposite surfaces of the base layer B. The outer layer A includes polymethylsilsesquioxane-based particles, the outer layer C includes less than 0.1% by weight of particles different from the polymethylsilsesquioxane-based particles. The polyester film contains no 2,6-naphthalenedicarboxylic-acid-derived units as repeat unit, and the film includes less than 0.1% by weight of particles. The polyesters in the outer layers comprise isophthalic acid-derived repeat units in an amount of <19% by weight. The invention further relates to a process for to produce the film and to its use as process film for the transfer of surface properties, especially for furniture surfaces.

Abstract: The present invention relates to a process for recycling a polyester film that includes comminuting a used polyester film to shreds, the used polyester film including a polyethylene terephthalate polymer, melting the shreds in a twin-screw or multi-screw extruder, filtering the melt, and pelletizing. The present invention further relates to a process for producing a biaxially oriented polyester film that includes melting PET pellets in an extruder, at least 10% by weight of the pellets having been obtained by the process of the invention for recycling a polyester film. The present invention further relates to pellets and to a biaxially oriented polyester film, obtained by the processes of the invention, and also to the use thereof.

Abstract: The invention relates to a multilayer biaxially oriented polyester film comprising a base layer B, an amorphous outer layer A and a further outer layer C, where this polyester film is suitable for lamination with metal sheets. The invention in particular relates to a polyester film which comprises (based on the mass of polyester) from 2 to 15% by weight of isophthalate-derived units in the base layer and which comprises more than 19% by weight of isophthalate-derived units in the amorphous layer A, and which has a silane-based coating on the outer layer A. The invention further relates to a process for the production of these films.

Abstract: The invention relates to a polyester film provided with a coating at least on one side, wherein the coating is the drying product of an aqueous dispersion, the composition of which comprises not only water but also at least one copolyester component and one silane component, where the copolyester component is formed to an extent of 3 to 35 mol % of a monomer unit bearing sulfonate groups, and is present in the dried coating in a proportion of 40-85% by weight, and the silane component bears vinyl groups or methacryloyl groups, and also alkoxy groups, and is present in the dried coating to an extent of 15-60% by weight. The invention further relates to a process for production thereof and to the use thereof.

Abstract: The present invention relates to a coated polyester film equipped on at least one side with permanent antifog coating. The film of the invention is suitable for the production of greenhouse blinds, and has specific transparency properties, permanent antifog properties and high UV resistance. The invention further relates to processes for the production of the polyester film of the invention, and also to use thereof.

Abstract: The invention relates to biaxially oriented, UV-stabilized polyester films incorporating silicon dioxide particles as light-scattering particles and a UV stabilizer; a process for producing the same and to use thereof in greenhouse blinds. The invention particularly relates to single- or multilayer polyester film with transparency from 70 to 92 %, where: the film includes at least 1.0% by weight to at most 2.5% by weight of SiO2, with the d50 value of these SiO2 particles ranging from 3 to 9 ?m, the SV value of the film is at least 700, the scattering factor SF of the film is at least 2 and not more than 8, the haze of the film is from 60 to 95%, and the clarity of the film is from 15 to 40%; and all of the external layers comprise at least 0.3 % by weight of an organic UV stabilizer.

Abstract: The invention relates to an at least three-layer biaxially oriented polyester film including at least one base layer B, one rough outer layer A and one smooth outer layer C, where the layers A and C are external layers arranged on opposing surfaces of the base layer B. The outer layer A includes calcium carbonate particles. The outer layer C includes less than 0.1% by weight of particles (where the percentage by weight data are based on the weight of the layer). The polyester used to produce all of the layers includes no 2,6-naphthalenedicarboxylic-acid-derived units as repeating units. The entire film includes less than 0.3% by weight (based on the weight of the entire film) of particles. The invention further relates to processes for producing the film, and also to use of the latter as process film for the provision of surface properties, in particular for furniture surfaces.

Abstract: The present invention relates to an at least two-layer biaxially oriented polyester film with at least one matt surface and with an increased coefficient of friction of this surface, with a total thickness from 8 to 75 ?m. The film of the invention has excellent suitability as an external ply of animal-feed bags with matt appearance which on stacking are not subject to slippage between the same.

Abstract: The invention relates to a single- or multilayer polyester film with transparency at least 93%, where the film includes a UV stabilizer in all film layers and has a permanent antifog coating on at least one side. The permanent antifog coating is the dried product of an aqueous coating dispersion having the following components: a) from 1 to 15% by weight (based on the coating dispersion) of a soil release polymer and b) from 3 to 15% by weight (based on the coating dispersion) of a hygroscopic, porous material. The invention further relates to a process for the production of the film and to its use.

Abstract: The present invention relates to an at least two-layer biaxially oriented polyester film with at least one matt surface and with an increased coefficient of friction of this surface, with a total thickness from 8 to 75 ?m. The film of the invention has excellent suitability as an external ply of animal-feed bags with matt appearance which on stacking are not subject to slippage between the same.

Abstract: The present, invention relates to a highly transparent, biaxially oriented, UV-resistant polyester film which has, at least on one side, a coating that reduces reflection of visible light. The film of the invention is suitable for the production of energy-saving sheet materials for greenhouses, in particular for cultivation of plants with high light requirement, e.g. tomatoes. The film has specific transparency properties and high UV resistance. The invention further relates to a process for the production of the polyester film, and also to use of the film in greenhouses.

Abstract: The present invention relates to a coated polyester film equipped on at least one side with permanent antifog coating. The film of the invention is suitable for the production of greenhouse blinds, and has specific transparency properties, permanent antifog properties and high UV resistance. The invention further relates to processes for the production of the polyester film of the invention, and also to use thereof.

Abstract: The present, invention relates to a highly transparent, biaxially oriented, UV-resistant polyester film which has, at least on one side, a coating that reduces reflection of visible light. The. film of the invention is suitable for the production of energy-saving sheet materials for greenhouses, in particular for cultivation of plants with high light requirement, e.g. tomatoes. The film has specific transparency properties and high UV resistance. The invention further relates to a process for the production of the polyester film, and also to use of the film in greenhouses.

Abstract: The invention relates to a multilayer biaxially oriented polyester film comprising a base layer B, an amorphous outer layer A and a further outer layer C, where this polyester film is suitable for lamination with metal sheets. The invention in particular relates to a polyester film which comprises (based on the mass of polyester) from 2 to 15% by weight of isophthalate-derived units in the base layer and which comprises more than 19% by weight of isophthalate-derived units in the amorphous layer A, and which has a silane-based coating on the outer layer A. The invention further relates to a process for the production of these films.

Abstract: The invention relates to biaxially oriented, UV-stabilized polyester films incorporating silicon dioxide particles as light-scattering particles and a UV stabilizer; a process for producing the same and to use thereof in greenhouse blinds. The invention particularly relates to single- or multilayer polyester film with transparency from 70 to 92 %, where: the film includes at least 1.0% by weight to at most 2.5% by weight of SiO2, with the d50 value of these SiO2 particles ranging from 3 to 9 ?m, the SV value of the film is at least 700, the scattering factor SF of the film is at least 2 and not more than 8, the haze of the film is from 60 to 95%, and the clarity of the film is from 15 to 40%; and all of the external layers comprise at least 0.3 % by weight of an organic UV stabilizer.

Abstract: The invention relates to an at least three-layer biaxially oriented polyester film including at least one base layer B, one rough outer layer A and one smooth outer layer C, where the layers A and C are external layers arranged on opposing surfaces of the base layer B. The outer layer A includes calcium carbonate particles. The outer layer C includes less than 0.1% by weight of particles (where the percentage by weight data are based on the weight of the layer). The polyester used to produce all of the layers includes no 2,6-naphthalenedicarboxylic-acid-derived units as repeating units. The entire film includes less than 0.3% by weight (based on the weight of the entire film) of particles. The invention further relates to processes for producing the film, and also to use of the latter as process film for the provision of surface properties, in particular for furniture surfaces.

Abstract: Biaxially stretched film with polymeric constituents formed mainly of polyester in which the film includes at least one copper salt and one halide, with the resulting film having an AC (alternating current) dielectric strength of at least 100 kV/mm at 23° C. and 50 Hz. The invention further relates to the use of the film of the invention, in particular in solar modules, and also to a process for its production.

Abstract: The invention relates to an at least three-layer, biaxially oriented polyester film with a carbon-black-filled outer layer and with two TiO2-containing layers, where a TiO2-containing layer is also an outer layer and where the thickness of the outer layers is from 4 to 15 ?m, the thickness of the base layer is ?the total of the thicknesses of the outer layers, the white outer layer includes at least 15% by weight of TiO2, the base layer includes at least 4% by weight of TiO2, the carbon-black-containing outer layer includes from 3 to 15% by weight of carbon black, and the SV value of the film is at least 600, where all % by weight data are based on the weight of the respective layer, and also to a process for the production of this type of film and to the use of the film in particular in blinds, including roller blinds, Venetian blinds, or projection screens, or in displays.

Abstract: The invention relates to an at least three-layer, biaxially oriented polyester film with two white outer layers and carbon-black-filled base layer, where the thickness of the outer layers is from 4 to 15 ?m, the thickness of the base layer is ?the total of the thicknesses of the outer layers, the white outer layers include at least 15% by weight of TiO2, the base layer includes at least 4% by weight of TiO2, the carbon-black-containing base layer includes from 1 to 8% by weight of carbon black, and the SV value of the film is at least 600, where all % by weight data are based on the weight of the respective layer, and also to a process for the production of this type of film and to the use of the film in particular in blinds, including roller blinds, Venetian blinds, or projection screens, or in displays.

Abstract: The invention relates to a polyester film incorporating at least one UV stabilizer of the formula I, in which R1 is hydrogen, alkyl, alkenyl, cycloalkyl, cycloalkenyl, heterocycloalkyl, aryl, or heteroaryl, and R2 is a moiety which contains at least one ?-electron system, which contains a carbon atom and at least one further atom selected from carbon, oxygen, and nitrogen, where the moiety R2 contains at least one atom different from carbon, where the film includes at least one further UV absorber which does not correspond to the formula I. The invention further relates to a process for producing the film, and also to articles formed from the film.