| 摘要 |
PURPOSE:To lessen the decrease of a plate thickness in a score processing part by adhering an olefin film of 5-30mum in its thickness onto the surface of an aluminum alloy plate material to be an inner surface side of a can lid material, and then forming a composite material. CONSTITUTION:Onto the surface of an aluminum alloy material to be an inner surface of a can lid material utilizing an aluminum alloy plate material as a base material, an olefin film of 5-30mum is adhered in order to form an can lid aluminum alloy composite material. For an adhesive agent used in the case of adhering an olefin film to an aluminum alloy plate material, it is preferred to employ maleic acid anhydride modified polyethylene, polypropylene, polyester, polyurethane, an the like. The can lid aluminum alloy composite material obtained herein is less in its plate thickness decrease after the score processing, so that the lowering of strength becomes small in the score processing part. |
