Patent ID: 6897183
Filing Date: 2005-05-24
Classification: B29C,B32B,B41M,G03G

Abstract:
1. A process of forming a multilayer film comprising at least two layers, a surface layer and a tie layer directly adjacent the surface layer, wherein the process comprises: (a) forming a first melt, for the surface layer, comprising a first polymeric binder; (b) forming a second melt, for the tie layer, comprising a thermoplastic antistat polymer, wherein the second melt exhibits a viscosity that is not more than 10 times or less than {fraction (1/10)} that of the first melt during the following extrusion step; (c) coextruding the two melts to form a composite film; (d) stretching the composite film to reduce its thickness; and (e) applying the stretched composite film to a support while simultaneously reducing the temperature of the composite film below the Tg of the surface layer.