Abstract: This invention embraces a method of controlling the impermeability of an organic polymer film to gases such as oxygen, aroma, flavor and fragrance and the like to produce gas impermeable organic polymer films by coating with a mixture of a siloxane monomer with carboxylic acid in an alcohol solvent and evaporating the solvent to complete the formation of Si--O--Si bonds; and then polymerizing and grafting the coating, preferably by electron beam radiation, to the polymer film. Improved coated polymer films and formulation products therefor are also provided.

Abstract: A method of imbuing polymer films as of polyethylene and polypropylene with gas, aroma, fragrance, flavor, grease and oil impermeable surface characteristics involving coating the film with appropriate silane compounds and cross-linking the same while providing physical adsorption adherence to the film, and in sufficient coating micron thickness to produce gas and related barrier characteristics; with chemical grafting, including by eb techniques, further providing improved bonding. Preferred barrier-coated polymer films with reduced haze and clarity are formed by such method.

Abstract: A process is described for modifying the surface of polymers such as polyolefins and the like to improve the wetability by barrier and other coatings and to enhance interlayer adhesion by graft polymerization through initiation by electron-beam radiation, optionally with an added electron energy acceptor.