发明名称 OPENING CURLED PORTION OF METAL CAN AND FORMING METHOD THEREOF
摘要 An externally wound curled part formed at the opening part of a metal container, wherein at least both inner and outer surfaces of a metal plate forming an area near the opening part are coated with resin film, the curled part formed on the upper side of a tilted surface so as to enclose a cut end part at the upper end thereof by involving the cut end part into the curled part is formed in such a state that is collapsed in the direction of plate thickness so that the lower end part thereof comes into contact with the tilted surface, and metal plates are overlapped with each other in the direction of plate thickness in almost portions other than an area near both the upper and lower ends of the curled part so that the metal plates are generally fitted to each other through the resin film, whereby the rusting a nd the deterioration of attractiveness of the curled part at the cut end part c an be prevented, and the strength of the curled part can be increased to improv e the deformation resistance thereof.
申请公布号 CA2483666(C) 申请公布日期 2009.03.17
申请号 CA20032483666 申请日期 2003.04.28
申请人 DAIWA CAN COMPANY 发明人 MATSUO, TOSHIO;ENOKI, YASUSHI
分类号 B65D8/02;B21D19/12;B21D51/38;B65D8/16;B65D8/20;B65D51/16;C09J5/10 主分类号 B65D8/02
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