A method of producing a film structure that contains a polyolefin and a Random Copolymer of ethylene and propylene

摘要

Method of producing a film structure that contains a polyolefin and a Random Copolymer of ethylene and propylene.Comprises the operations of coextruir: a) a substrate Layer which comprises polypropylene homopolymer with a layer consisting of a Random Copolymer of propylene and ethylene on one side of the layer of polypropylene Copolymer, containing 0.5 to 6 Weight of ethylene and 94 to 99,5 in weight polypropylene biaxially oriented; (b) the product placement; (c) a primer Coating applied to the surface of a layer of Random Copolymer; (d) Apply a Heat weldable coating layer on the primer,The Heat weldable Layer comprising a Copolymer of Vinylidene Chloride, containing by weight 50 vinildeno chloride; and (e) Age structure during 21 days and 24 hours at a temperature of 0 to 66jc to produce a Thermal Welding Strength between layers welded by Lime Opposing or greater than that obtained in the absence of Aging.