Abstract: The invention relates to transparent packaging for vacuum forming, inter alia, formed from a biaxially oriented, thermoformable polyester film as lower film (A) and a biaxially oriented polyester film as upper film (B) that is both heat-sealable and peelable (at least when the material is hot) in relation to the lower film (A). The present invention further relates to the use of such packaging to produce sealed, thermoformed packs, and to the processes for their respective production.

Abstract: A single-layer or multi-layer, biaxially oriented polyester film is provided bearing on at least one film surface a coating for transparency increase. The film has a particle fraction of not more than 0.5% and the coating is a dried water-based or solvent-based solution and/or dispersion having a dry coat thickness of 60-130 nm. The coating includes at least one acrylic acid-based and/or methacrylic acid-based polymer and at least one alkylphosphonate and/or oligo-alkylphosphonate. The coating has a refractive index n<1.64 and a phosphorus fraction of between 2 and 18%. The inventive film is suitable for producing greenhouse energy-saving sheets, particularly for the growing of plants with exacting light demands such as tomatoes. The film has specific transparency properties, high UV stability and good fire properties. The invention further relates to methods for polyester film production and also to the use thereof in greenhouses.

Abstract: The invention relates to transparent packaging for vacuum forming, inter alia, formed from a biaxially oriented, thermoformable polyester film as lower film (A) and a biaxially oriented polyester film as upper film (B) that is both heat-sealable and peelable (at least when the material is hot) in relation to the lower film (A). The present invention further relates to the use of such packaging to produce sealed, thermoformed packs, and to the processes for their respective production.