Method of manufacturing an aluminum design tab end for a beverage can

• US 20040123444A1
• Filed: 10/17/2003
• Published: 07/01/2004
• Est. Priority Date: 04/20/2001
• Status: Active Grant

• Current Assignee: 3C Technologies, Ltd.
• Original Assignee: "C" Solutions Pty Limited
• Inventors: Lee, Do Hee
• Granted Patent: US 6,854,947 B2
• Time in Patent Office: Days
• US Class Current: 29/458
• CPC Class Codes: B21D 51/383 scoring lines, tear strips or pulling tabs
• CPC Class Codes: B65D 17/28 at lines or points of weakness
• CPC Class Codes: Y10T 29/49885 with coating before or during assembling
• CPC Class Codes: Y10T 29/49982 Coating

Abstract

The present invention relates to a method for manufacturing a design tab end of a beverage can, in which a base color is painted on an aluminum tab coil before forming a tab, and a design is printed on the surface of the tab coil on which the base color has been painted, thereby making the color of the tab gorgeous and raising the value of the product. The present invention is comprised of the steps of, painting a base color on an exact surface position of an aluminum tab coil that is to be formed to a tab through the tab forming process; printing a design on the surface of the tab coil on which the base color has been painted, according to a printing degree; coating a varnish for preventing a deterioration of printing quality during forming and distribution of a product, on the surface of the tab coil on which the design has been printed; arranging a pitch of the tab coil so as to determine an exact position of the tab coil that has been coated with the varnish; press-forming the arranged tab coil with a conversion press; and stacking the tab formed by the press-forming to join the tab on a center of a shell that has been fed previously.

Claims

1. A method for manufacturing a design tab end of a beverage can, comprising the steps of:

painting a base color on an exact surface position of an aluminum tab coil that is to be formed to a tab through the tab forming process;

printing a design on the surface of the tab coil on which the base color has been painted, according to a printing degree;

coating a varnish for preventing a deterioration of printing quality during forming and distribution of a product, on the surface of the tab coil on which the design has been printed;

arranging a pitch of the tab coil so as to determine an exact position of the tab coil that has been coated with the varnish;

press-forming the arranged tab coil with a conversion press; and

stacking the tab formed by the press-forming to join the tab on a center of a shell that has been fed previously,

wherein the step of painting the base color, the step of printing the design, and the step of coating to preserve the printing quality are performed in a single process by a unified design tab printer using a pitch arrangement tool.

2. The method for manufacturing a design tab end of a beverage can according to claim 1, wherein the tab coil is fed to the step of painting the base color through a photosensitive printing layer and a pitch roll.