PRODUCTION METHOD OF HEAT INSULATING PATTERNED ARTIFICIAL STONES WHICH IS CAPABLE HEAT INSULATION AND EXTERNAL DECORATION AT A TIME, AND PRODUCTION AND APPLICATION OF PATTERN SCREENS THEREFOR

摘要

PURPOSE: Provided are methods for producing patterned artificial stones enabling heat insulation and external decoration at a time, and pattern screens enabling expression of the pattern of natural stones and mass production. CONSTITUTION: The heat insulating patterned stones are produced by the following steps of: (i) mixing silica and 30vol.%(based on the amounts of silica) of crosslinking agent, aqueous acrylic adhesive solution(20%) to make silica keep an effective form of silica and to form a space between silica particles, and spreading mixtures over a plate such as foamed PVC panel to be 2mm in thickness and leveling mixtures; (ii) preparing a pattern screen to express the pattern of stones(marble and granite) and print patterns in a large quantity by transferring patterns to an transparent OHP film and perforating patterns on the OHP film; (iii) making stone patterns on the plate by passing silica powder through holes made by attaching a patterned film to a 500mesh of iron net and perforating the patterned film; (iv) hardening patterns, which the adhesive is absorbed into, at 80deg.C for 1hr; (v) impregnating silica mixtures, coated on the plate, having pores formed by evaporation of water with a thermosetting resin solution(40%) to fill pores between silica particles with the resin solution; (vi) hardening mixtures including the resin solution at 80deg.C for 30min.