MULTILAYERED METALLISED FILM AND METHOD OF MAKING SAID FILM Russian patent published in 2010 - IPC B32B15/04 B32B15/08 B32B15/85 B32B27/32 

FIELD: chemistry.

SUBSTANCE: said film consists of a metal layer (aluminium, zinc, silver, gold) deposited using a vacuum metallisation method, a first plastic layer made from a propylene-butene copolymer or a mixture of this copolymer with propylene polymers on the first surface of which there is a metal layer; a second plastic layer made from isotactic propylene or from a mixture of isotactic propylene and polypropylene polymers. The first and second layers are coextruded and are biodirected. The surface of the first plastic layer is subjected to pre-activating treatment (flame treatment, corona discharge treatment) with subsequent pre-metallisation via plasma treatment on a vacuum metallisation installation with three chambers under partial vacuum conditions, after which a metal layer is deposited.

EFFECT: obtained multilayer metallised film has high barrier effect with respect to oxygen and water vapour and high level of adhesion of the metallised layer to plastic.

74 cl, 4 ex, 4 dwg