Patent ID: 8234882
Filing Date: 2012-08-07
Classification: B41M,C03B,C03C

Abstract:
1. A method for producing iridescent crystal glass, the method comprising: a. cutting: a glass is cut on a computer-based cutting table according to the technical requirements to produce a glass product; the parameters of the computer-based cutting table are set according to the actual size plus a tolerance of +0.25 millimeters and stored in the computer; b. edge and corner processing: according to the technical requirements, glass edges of the product are processed on a linear edge grinding machine or a double-edge grinding machine; the glass edges are processed with coarse grinding for chamfering, fine grinding for chamfering, fine grinding and polishing for chamfering, coarse grinding for edge rounding, and fine grinding for edge rounding; for the product processed with chamfering, the glass edges are usually processed to 0.3 mm×45°˜1 mm×45′; for the products processed with edge rounding, the radius R of a round corner is not greater than the thickness of the glass; after corner processing, the semi-finished products are transferred to a washing step and prepared for toughening; c. toughening: in accordance with the technical requirement, the glass is toughened in a toughening furnace; during the toughening treatment, the cooling wind pressure is 7 KPa-13 KPa; the heating time is 100-180 s/furnace; the cooling time is 20-50 s; the quenching time is 20-40 s; the flatness and granularity of the products should be guaranteed; d. preparing of ink: ink preparation must be performed in the condition of indoor temperature at 23° C.±5° C. and humidity between 40%-70%; (1) dip a granular material into solvent or varnish and agitate gently; (2) mix a color ink with varnish and agitate gently; (3) mix the gently-agitated granular material with the agitated mixture of varnish and the color ink, and then agitate again; for materials with silver powder, the agitation shall be carried out in a “slow-quick-slow” sequence; for materials with pearl powder, crystal powder, or diamond powder, the agitation shall be carried out in a “slow-quick-slow” sequence, and not agitated at high speed; (4) for materials with color pearl powder, the agitation speed shall be further lowered; (5) the agitated ink is filtered through a 120-180 mesh stainless steel screen, and part of the agitated ink is reserved for proofing; (6) after proofing, the remaining bulk agitated ink is distributed into small containers attached with appropriate labels for the use of production; e. iridescent crystal printing: with toughened glass as base material, print logo, sight window, and decorative patterns with the prepared ink on the surface of the glass in sequence and in predetermined colors, then, confirm the color and add background color for product protection on the entire printing surface; each printing must be followed with drying before entering the next procedure for printing; and f. drying: the drying time and drying temperature are controlled according to the properties of the prepared ink; the drying temperature is controlled at 120˜200° C., and the drying time is controlled within 5˜30 minutes.