Patent ID: 6935233

Claim:
A screen printing method comprising the steps of: a) using a screen-printing machine to print a first color of a four-color printing on a thin-film material with a first ink mixture containing a first printing ink, a hardening agent and a bonding agent subject to a predetermined design, and then performing a primary drying process to dry said first color; b) using said screen-printing machine to print a second color of said four-color printing on said first color with a second ink mixture containing a second printing ink, a hardening agent and a bonding agent subject to said predetermined design, and then performing a secondary drying process to dry said second color; c) using said screen-printing machine to print a third (special) color of said four-color printing on said second color with a third ink mixture containing a third printing ink, a hardening agent and a bonding agent subject to said predetermined design, and then performing a third drying process to dry said third color; d) using said screen-printing machine to print a first ex-design printing on said third color with a fourth ink mixture containing a fourth printing ink, a hardening agent and a bonding agent, and then performing a fourth drying process to dry said first ex-design printing; e) using said screen-printing machine to print a second ex-design printing on said first ex-design printing with a fifth ink mixture containing a fifth printing ink, a hardening agent and a bonding agent, and then performing a fifth drying process to dry said second ex-design printing; f) using said screen-printing machine to print a third ex-design printing on said second ex-design printing with a printing ink, and then performing a sixth drying process to dry said third ex-design so as to obtain a semi-finished printing work; and g) processing said semi-finished printing work through a hot work die treatment, a die-cutting process, and then an injection-molding process so as to obtain a finished product.