| 摘要 |
<p>PURPOSE: A composite resin film and a metallic sheet coated with same is provided to mass-produce, make the can wall portion thin more than usual, favorably secure the flavor of the content after the can is packed with the content and storaged for a certain period of time, and have excellent impact resistance in which cracks are not caused in the resin film by the outer impact before and after the can is packed with the content. CONSTITUTION: The resin covered metallic sheet is laminated with a three layered resin film comprised of an uppermost layer, an intermediate resin layer,and a lowermost layer. The lowermost layer of the resin layer to be laminated is mainly composed of polyester resin having inferior impact resistance but superior adhesion to the metallic sheet, which secures mainly adhesion during forming. The intermediate layer secures impact resistance and more excellent formability than that of polycarbonate resin alone by blending polycarbonate resin having definite structure which is not excellent in the adhesion to the metallic sheet but excellent in impact resistance, especially at a low temperature, and polyester resin having definite structure. The uppermost layer is mainly composed of polyester resin having definite structure which is excellent in barrier ability and which scarcely affects the flavor.</p> |
