Moplefan S.p.a.

Rino Cardaio

Luigi Mauri

Polyolefinic films having improved impermeability characteristics to gases and vapors, said films being coated on either one or both its surfaces by a layer of a copolymer containing functional hydroxylic groups, functional acid carboxylic groups and optionally--esteric groups and obtained by hydrolysis of copolymers consisting of an unsaturated ester and of an unsaturated acid or corresponding anhydride.

Polyolefinic films of improved impermeability characteristics and

Films comprising alpha-olefin polymers, such as polypropylene consisting essentially of recurring propylene units and having a substantial crystalline polypropylene content, and in particular isotactic polypropylene, are rendered poorly adhesive to the welding bars of automatic and semi-automatic machines conventionally used for the manufacture of containers, envelopes, bags, vessels and, in general, other manufactured articles useful in the packaging industry, by coating the films by a mixture of a copolymer of a vinyl ester with an unsaturated acid, a terpolymer of an alkyl acrylate, an alkyl-methacrylate and an unsaturated acid and a cross-linking amine.

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Terni, Italy

Rino Cardaio