Patent ID: 6533884
Filing Date: 2003-03-18
Classification: B29C,B31F,B32B,Y10T

Abstract:
A method of making an embossed multi-layer flexible packaging material comprising:feeding a pre-formed first layer to an embossing roller and a nip between the embossing roller and an anvil roller, the embossing roller comprising an elastomeric embossing die and the anvil roller being rigid; feeding a pre-formed third layer to the anvil roller and the nip, the third layer comprising a metal foil or a metalized polymer and having one or more barrier properties; extruding a second layer from an extrusion die and depositing the second layer between the first layer and the third layer at the nip; embossing the first layer of the packaging material with the elastomeric embossing die; and joining the first layer, the second layer and the third layer of the packaging material with pressure at the nip, wherein the second layer is between the first layer and the third layer and the steps of embossing, extruding, and joining are performed simultaneously and such that the one or more barrier properties are not reduced by more than 40%.