COMPOSITE FLUOROPLASTIC FILM AND COVER MATERIAL FOR AGRICULTURAL GREENHOUSE USING THE SAME

摘要

PURPOSE:To obtain a composite fluoroplastic film excellent in ultraviolet cut-off properties and durability and having thermal laminating properties and easy adhesiveness by providing a coating layer based on an ultraviolet absorbable acrylic resin to at least one surface of a fluoroplastic film. CONSTITUTION:A composite fluoroplastic film is obtained by providing a coating layer based on an ultraviolet absorbable acrylic resin to at least one surface of a fluoroplastic film. As a representative example of the material quality of the fluoroplastic film, a tetrafluoroethylene polymer is designated. However, a tetrafuluoroethylene/hexafluoropropylene copolymer is pref. used from the viewpoint of mechanical characteristics, film forming properties and processing aptitude. Herein, the coating layer contains 50wt.% or more of an ultraviolet absorbable acrylic resin. That is, the ultraviolet absorbable acrylic resin is a copolymer resin of a reactive benzophenone compd. having ultraviolet absorbing capacity and an acrylic monomer having a polymerizable unsaturated group.