Metallizable bopp film with an outer polyketone layer

摘要

The invention relates to a heat-sealable composite film comprising A) a base layer of preferably biaxially stretched polypropylene; B) an adhesion-promoting layer of modified polyolefin on at least one side of base layer (A); C) an outer layer of a copolymer consisting of one or several olefins and carbon monoxide (polyketone) located on the adhesion-promoting layer(s) (B).