Patent ID: 7150597
Filing Date: 2006-12-19
Classification: B21D

Abstract:
1. A method for manufacturing a designed tab end using a pilot hole of a tab coil such that a design is precisely printed on an upper surface of the designed tab, the designed tab adapted to open a discharge outlet of a beverage can, the method comprising the steps of: punching a pilot hole on a tab coil in a same pitch as that of a conversion press prior to design printing; flatly reforming a projected portion formed on the punched tab coil; washing and drying the tab coil; inputting the tab coil into a printer according to the pitch of the pilot hole; detecting the pilot hole of the tab coil; controlling a color controller such that a design is printed on a detected target position of the tab coil; printing the design on the tab coil using a print roll controlled by the color controller; pulling the tab coil according to the pitch of the pilot hole; drying the tab coil; subjecting the tab coil to a varnish coating process; winding the varnished tab coil; loading the wound tab coil on an uncoiler of a conversion press for tab formation and inputting the tab coil into the conversion press; forming the tab coil as a tab forming mold set; and attaching a shell to the tab coil.