Method of forming a breathable film cover

Abstract

Breathable multilayer film covers for window panes that reflect light and/or absorb ultraviolet rays. The film cover blocks UV rays and some light, and it reflects solar heat. The breathable film cover has at least two film layers, which can be co-calendered. An outer film is a polymeric transparent film incorporating UV stabilizers. An inner film is a polymeric film that contains internal metal particles and preferably UV stabilizers. An adhesive, preferably also incorporating UV stabilizers, is applied as a layer to the multilayer film so that the breathable film cover can be adhered to window structures. To form a covered window pane, the multilayer film is adhered to a plate.

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         7 . A method of forming a breathable film cover comprising the steps of: 
 forming a first polymeric polyvinyl chloride film from a master batch including plasticized polyvinyl chloride and metal particles;    forming a second clear polymeric polyvinyl chloride film with UV stabilizers;    co-calendaring the first polymeric polyvinyl chloride film and the second polymeric polyvinyl chloride film together to form a multilayer film; and    applying an adhesive on a surface of the first polymeric polyvinyl chloride film.    
     
     
         8 . The method of  claim 7  comprising an additional step of applying a release liner over the adhesive.  
     
     
         9 . The method of  claim 7  wherein the master batch includes UV stabilizers.  
     
     
         10 . The method of  claim 7  wherein the adhesive is an acrylic adhesive.  
     
     
         11 . The method of  claim 7  wherein the adhesive is a clear pressure sensitive adhesive.  
     
     
         12 . The method of  claim 7  wherein the adhesive includes UV stabilizers.  
     
     
         13 . The method of  claim 7  wherein the first polymeric polyvinyl chloride film is translucent.  
     
     
         14 . The method of  claim 7  wherein the breathable film cover has no more than two polymeric polyvinyl chloride film layers.  
     
     
         15 . A method of forming a breathable film cover comprising the steps of: 
 forming a first translucent polymeric polyvinyl chloride film from a master batch including plasticized polyvinyl chloride, UV stabilizers, and metal particles;    forming a second clear polymeric polyvinyl chloride film with UV stabilizers;    co-calendaring the first polymeric polyvinyl chloride film and the second polymeric polyvinyl chloride film together to form a two-layer film; and    applying a clear adhesive with UV stabilizers on a surface of the first polymeric polyvinyl chloride film.