초록 ▼

A process for the preparation of laminates comprising the steps of (1) putting a thermoplastic resin sheet or film and a metal foil or sheet one upon another with a specific polyolefin type resin being interposed therebetween, (2) heating the thus interposed specific polyolefin type resin to a tempe

A process for the preparation of laminates comprising the steps of (1) putting a thermoplastic resin sheet or film and a metal foil or sheet one upon another with a specific polyolefin type resin being interposed therebetween, (2) heating the thus interposed specific polyolefin type resin to a temperature not lower than the melting point of the specific polyolefin type resin to obtain an intermediate laminate and (3) laminating at least one of thermoplastic sheets or films and paper on the metal foil or sheet side of said intermediate laminate using therebetween an ordinary adhesive not requiring heating at a temperature not lower than said melting point at the time of lamination thereby to obtain a desired laminate. In one embodiment, this invention also relates to a foodstuff packaging container wherein the innermost layer is a polyolefin resin sheet or film.

대표청구항 ▼

A process for preparing a final laminate comprising the steps of: putting a thermoplastic resin sheet or film and a metal foil or sheet one upon another with a specific polyolefin type resin being interposed therebetween, the specific polyolefin type resin being at least one member selected from the

A process for preparing a final laminate comprising the steps of: putting a thermoplastic resin sheet or film and a metal foil or sheet one upon another with a specific polyolefin type resin being interposed therebetween, the specific polyolefin type resin being at least one member selected from the group consisting of carboxyl group-containing polyolefin resins and metal compound-added carboxyl group-containing polyolefin resins, heating the thus interposed specific polyolefin type resin through the metal foil or sheet to a temperature not lower than the melting point of the specific polyolefin type resin to obtain an intermediate laminate and laminating at least one member selected from the group consisting of paper and thermoplastic sheets or films, on the metal foil or sheet side of said intermediate laminate using therebetween an ordinary adhesive which does not require to be heated to a temperature not lower than the melting point of said specific polyolefin type resin at the time of lamination, thereby to obtain a final laminate.