LAMINATED METAL SHEET FOR CONTAINER

• Main Authors: KITAGAWA, Junichi, YAMANAKA, Yoichiro, NAKAMARU, Hiroki, NAKAMURA, Norihiko
• Format: Patent
• Language: English; French; German
• Published: 02.06.2021
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A laminated metal sheet 1 includes a film 3 including a laminated resin layer including at least two layers with polyester as a main component formed on one face or both faces of a metal sheet 2. A polyester resin layer serving as a lower layer 3a in contact with the metal sheet 2 of the laminated resin layer contains 90 mol% or more of terephthalic acid as a polycarboxylic acid component and contains a polyol component containing ethylene glycol and 1,4-butanediol, in which the polyol component contains 30 to 50 mol% of ethylene glycol, 50 to 70 mol% of 1,4-butanediol, and 10 mol% or less of other polyol components. A polyester resin layer serving as an upper layer 3b of the laminated resin layer contains polyester containing terephthalic acid as a polycarboxylic acid component and 1,4-butanediol as a polyol component both of which are 90 mol% or more of the respective components, has a total thickness of 3 to 25 µm, and has a ratio (I 011 /I 100 ) of peak intensity (I 011 ) observed in the range of 2¸ = 15.5 degrees to 17.0 degrees to peak intensity (I 100 ) observed in the range of 2¸ = 22.5 degrees to 24.0 degrees in X-ray analysis in the range of 0.2 to 5.0.