Patent ID: 8499601
Filing Date: 2013-08-06
Classification: B65D,B67B,Y10S

Abstract:
1. A method for manufacturing a DI can member using a bottle can member produced by drawing and ironing a metal plate, comprising the steps of: forming a mouth section by processing an aperture section of the bottle can member so as to reduce a diameter of the aperture section; forming an enlarged-diameter section by processing the aperture section so as to enlarge the diameter of the aperture section by a predetermined distance from an upper end of the mouth section; decreasing a diameter of a portion of the enlarged-diameter section to provide a thread section and to form an expanding section remote from the thread section where the diameter of the enlarged-diameter section is not decreased; forming a thread on the thread section after forming the expanding section; and forming a curl section on the upper end of the mouth section after the thread is formed.