Multi-layer film structure and electrical cable incorporating same
AssigneeThe Dow Chemical Company
InventorsFelix Achille, Daniel G. Pikula, Patricia B. Leng
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Abstract
A multi-layered adhesive composition particularly suited for adhesion between metallic substrates and vinyl chloride polymer resins particularly highly plasticized vinyl chloride polymer resins comprising a metal adherent layer, an intermediate layer and a vinyl chloride polymer adherent layer.
Claims7
A multiple layer adhesive film suitably employed to provide adhesion between a metallic substrate and a vinyl chloride polymer resin, the multiple layer adhesive film comprising a metal adherent layer of a copolymer of ethylene and up to about 20 percent by weight of one or more copolymerizable carboxy containing comonomers;
- an intermediate layer of a copolymer of ethylene and vinyl acetate containing from about 10 percent to about 40 percent by weight polymerized vinyl acetate;
- and a vinyl chloride polymer adherent layer of a polymer of ethylene and carbon monoxide or a copolymer of ethylene, carbon monoxide and one or more copolymerizable ethylenically unsaturated carboxy substituted comonomers.
A communications cable having improved fire resistance comprising an outer jacket of a vinyl chloride polymer resin, a multi-layer adhesive film comprising a metal adherent layer of a copolymer of ethylene and up to about 20 percent by weight of one or more copolymerizable carboxy containing comonomers;
- an intermediate layer of a copolymer of ethylene and vinyl acetate containing from about 10 percent to about 40 percent by weight polymerized vinyl acetate;
- and a vinyl chloride polymer adherent layer of a polymer of ethylene and carbon monoxide or a copolymer of ethylene, carbon monoxide and one or more copolymerizable ethylenically unsaturdated carboxy substituted comonomers, a metallic shield and a conductor assembly, the metallic shield being wrapped circumferentially around the conductor assembly and adhered to the jacket by means of the multi-layer adhesive film.
Dependencies are inferred from the claim text.