The manufacturing method of tubular earring with different patterns and colours

Abstract

This invention is hollow tubular earring with different surface patterns from the contrast of copper colour and silver colour. The tubular earring made of laminated copper and silver plates which provide an advantage in cost reduction. The purpose of creating this invention into the earrings is to avoid contact with the skin. Intaglio patterns performed by the CNC machine are capable to control identical patterns in manufacture process. The manufacture process of this invention comprises sintering a plurality of metal plates into laminated stick, rolling the stick to reduce its thickness, control the identical intaglio patterns on the stick by the CNC machine, rolling the stick to expand patterns, drawing the laminated metal plates into metal tube, bending the metal tube into circular shape, assembling earring with silver end cap and ear post.

Dependencies are inferred from the claim text.