two piece tin foil laminated sheet and two piece tin foil body

摘要

Patent Summary: "Two-piece tin foil laminated sheet and two-piece tin foil body". The present invention relates to this laminated metal sheet comprising: a metal sheet; a first layer of polyester resin that is formed on a metal sheet surface, said surface forming the outer surface of a container; and a second layer of polyester resin which is formed on another surface of the metal sheet, said other surface forming the inner surface of the container. The first layer of polyester resin contains: from 30% by weight to 60% (inclusive) of a polyethylene terephthalate or a copolymerized polyethylene terephthalate having a copolymer content of less than 6 mol%; from 40 mass% to 70 mass% (inclusive) of a polybutylene terephthalate or a copolymerized polybutylene terephthalate having a copolymer content of less than 5 mol%; and from 0.01% to 3.0% (inclusive) of a polyolefin wax to the total amount of the other components. The second layer of polyester resin is formed of a copolymerized polyethylene terephthalate having a copolymer content of less than 22 mol%. The first and second layers of polyester resin have a residual orientation degree of less than 30%.