Metal/polymer laminates

Details Metal/polymer laminates Metal/polymer laminates

B - Operations, Transporting

32

B

190/78, 154/126.

B32B 15/08 (2006.01) B65D 65/40 (2006.01) B32B 31/30 (1990.01)

Patent

CA 2009854

Abstract Metal/Polymer Laminates A laminate is described for manufacture of container components, such as can ends (1) of the kind having an aperture closed by a flap portion (7) hingedly connected (at 8) to the rest of the central panel (5) of the can end, overlapping margins (9, 10) of the flap portion and aperture being sealed by a PVC based sealant (11). The laminate comprises sheet metal (aluminium alloy, tinplate, ECCS or blackplate) bonded to a polymeric film which is a composite extrusion or a coated coextruded film or a coextrusion, comprising an outer layer of polymeric material to which the sealant will adhere and an inner layer of polymeric material which bonds the film to the sheet metal; the outer layer of polymeric material being an acid-modified olefin-vinyl acetate copolymer, or a maleic anhydride-vinyl acetate-ethylene terpolymer or polyvinylidene chloride, or unplasticised polyvinyl chloride.

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