Patent
Method for coating thermoplastic resin beads for use in imitation pearls (US Patent 7413772)
Young Nam Rhee, Sang Min Rhee · Granted Aug 19, 2008 · Filed Apr 16, 2004
Patent number: 7413772 Kind code: B2 Granted: 2008-08-19 Filed: 2004-04-16 Inventors: Young Nam Rhee (Seoul, KR); Sang Min Rhee (San Jose, CA, US)
Abstract
A method for coating thermoplastic resin beads for use in imitation pearls includes the steps of: applying to celluloid a surface treatment compound (A) dissolved into a mixed solution of acetone, ethylacetate, butylacetate, and benzene; coating the surface treated celluloid with compounds for an under coat and a mid coat, each compound
Showing a preview — retrieve the full document via the Exa API.
Powered by the Exa API