| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated steel sheet which can make can opening properties and non-repairing properties compatible in spite of a thin score remaining thickness and is suitable for use in an easy open end. SOLUTION: The laminated steel sheet with resin coat layers formed on both surfaces is used in a can cutting needless lid press-molded by a curved surface mold in which the cross-sectional shape of a cut groove is 0.1-1.0 mm in curvature. The resin coat layer is made of a copolyester resin produced from a dicarboxylic acid component and a glycol component, and terephthalic acid occupies 94-less than 98 mole% of the dicarboxylic acid component. In the laminated steel sheet, the coefficient of plane orientation of the copolyester resin of 10-30μm thickness is 0.04 or below. COPYRIGHT: (C)2005,JPO&NCIPI |
