Patent ID: 7118790
Filing Date: 2006-10-10
Classification: B29C,B29K,B29L,B32B,C08J,Y10S,Y10T

Abstract:
1. A coated polymeric article comprising a film comprising: (a) a coextruded polypropylene substrate consisting of a first outer surface of a maleic anhydride modified polypropylene layer and a second outer surface of a selected polypropylene layer; and (b) a polysilicate coating on the maleic anhydride modified polypropylene layer, wherein component (a) is stretched approximately 4 to 5 times in the machine direction, followed by transverse stretching approximately 9 to 10 times, such that a thickness of component (a) in the range of about 0.5 to about 2 mil was achieved prior to coating; and wherein said coated polymeric article has an oxygen transmission rate of 3 to 15 cc/m