Welded metal bottle can and manufacturing method thereof

Abstract

The invention discloses a welded metal bottle can and a manufacturing method thereof. The welded metal bottle can comprise a can body and a neck part on the can body, wherein the neck part comprises amiddle caliber part and a conical part arranged on the upper portion of the middle caliber part; the conical part is provided with an included angle alpha relative to a vertical plane, and the included angle alpha is 3-10 degrees; the manufacturing method comprises the steps of carrying out rolling and welding of a metal sheet after painting into a cylindrical tank body; reducing one open end ofthe can body to form the middle caliber part; and forming the middle caliber part to form the conical part on the upper portion of the middle caliber part, wherein the conical part is provided with anincluded angle alpha relative to a vertical plane, and the included angle alpha is 3-10 DEG. The welding metal bottle can and the manufacturing method have the advantages that the processing difficulty is greatly reduced; through three-layer folding process of a curling part and taper angle setting, the sealing performance of the manufactured welding metal bottle can is good, so that the coatingis not prone to peeling off; a screw cover rotates smoothly, and the sealing performance is good, so that the welding metal bottle can is not prone to rusting during containing liquid.

Description

technical field [0001] The invention relates to a metal container for containing beverages and its preparation process, in particular to a welded metal bottle and its manufacturing process. Background technique [0002] At present, in the field of metal packaging at home and abroad, there are mainly two types of metal bottles and cans: (1) Stamping and forming, which uses metal sheets with excellent ductility to form a cylinder and a bottom or a cylinder and a bottom Separate (the bottom side is sealed with the bottom cover), and the diameter of the cylinder and the opening end are reduced to form a mouth and neck, and the mouth and neck have a safety ring, a thread, and a crimp; (2) Welding , the metal sheet (coated and printed in advance) is welded and rolled into a cylinder, and one side of the cylinder is reduced in diameter to form a neck, and the neck has a safety ring, a thread, and a crimp. The other side of the cylinder is sealed with a bottom cover. [0003] On t...

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a welded metal bottle and can, which can solve the problem of difficulty in re-screwing the screw cap due to uneven tooth shape or wrinkling when sealing the screw cap; at the same time It not only has the characteristics of exquisite printing, but also solves the phenomenon of poor sealing or rusting of the open end of metal bottles and cans; the invention also provides a manufacturing method of welded metal bottles and cans

Images