Biaxially oriented UV-resistant, single- or multilayer polyester film with at antireflective coating
AssigneeMitsubishi Polyester Film GmbH
InventorsHolger KLIESCH, Andreas BORK, Claudia LOHRE, Ingo FISCHER, Yavuz ÜNKER
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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.
Claims22
A single- or multilayer polyester film comprising
- an antireflective coating at least on one side of said film,
- an antireflective coating or an antireflective outer layer with a lower refractive index than the refractive index of the film without the antireflective outer layer disposed on that side of the film that is opposite to the side having an antireflective coating, and
- the film, with the exception of the coating(s), comprising a UV stabilizer in all layers,
- wherein the film has a transparency of at least 93.5%.
Dependencies are inferred from the claim text.