Patent ID: 9233526
Filing Date: 2016-01-12
CPC Classification: B32B,Y10T

Claim Text:
1. A process for preparing a composite material comprising the steps of: i) contacting a surface of a first aluminum foil with a metal phosphate for cleaning the surface, for coating the surface, or both; ii) contacting the surface of the first aluminum foil with a filled polymeric core material; and iii) adhering the filled polymeric core material to the surface of the first aluminum foil using heat, pressure, or both; wherein the filled polymeric core material includes about 2 volume percent to about 50 volume percent metal fibers; and about 50 volume percent to about 98 volume percent of one or more polyolefin resins, wherein the polyolefin resin includes about 65 weight percent or more of an α-olefin; wherein the aluminum is free of a polymeric coating prior to the step of adhering the aluminum to the polymeric core layer; the polyolefin resin includes a polyethylene copolymer; the composite material is a sandwich composite including the filled polymeric core material interposed between the first aluminum foil and a second aluminum foil.