| 摘要 |
PROBLEM TO BE SOLVED: To obtain a low-cost polyester resin laminated steel sheet excellent in heat resistance for a can such as a 18-liter can, pail can or the like, wherein painting and printing are applied on an outer surface before can manufacturing and processing, and a manufacturing method thereof, and a manufacturing method of a metal container such as the 18-liter can, pail can or the like made of the polyester resin laminated steel sheet. SOLUTION: A laminated steel sheet has a polyester resin coat of two-layered structure. A top layer thereof has an orientated crystal structure. A lower layer thereof contacting with the steel sheet has 0.5-5μm thickness and a melting starting temperature (Tms1) is 160 deg.C or higher, and a relation between a melting point (Tm1) of the lower layer and a melting point (Tm2) of the top layer is Tm1<=Tm2-10 deg.C. A total thickness of the resin coat of the polyester resin laminated steel sheet is 12-65μm. And in the manufacturing method, the laminated steel sheet is manufactured at a temperature from Tms1+20 deg.C to Tm2-10 deg.C by heat contact bonding using a polyester film, and a metal container excellent in corrosion resistance is manufactured. |
