Patent ID: 9034136
Filing Date: 2015-05-19
Classification: B29D,B32B,B44C,B44F,C08K

Abstract:
1. A method of producing an artificial marble containing amethyst and vermiculite, the method comprising: (a-1) mixing 40˜58 weight % of resin, 1˜3 weight % of pigments, 40˜58 weight % of amethyst powders, and general additives including 0.1˜0.4 weight % of a curing agent, 0.01˜0.1 weight % of an antifoaming agent, 0.03˜0.1 weight % of a dispersing agent, 0.2˜1 weight % of a cross-linking agent, and 0.1˜0.4 weight % of a coupling agent, which are required when producing the artificial marble, based on 100 weight % of whole composition to form an artificial marble-crushed material containing amethyst; (a-2) curing liquid-phase composition, which is mixed through step (a-1), at a temperature of 70° C. to 90° C. for 20 minutes to 40 minutes; (a-3) crushing the artificial marble containing the amethyst, which is cured through step (a-2), in various irregular shapes; (b-1) mixing 60˜70 weight % of a crushed material, which is obtained through steps (a-1) to (a-3) of forming the artificial marble-crushed material containing the amethyst, 15˜30 weight % of resin, 0.1˜2 weight % of pigments, 5˜20 weight % of aluminum hydroxide, and general additives including 0.1˜0.4 weight % of a curing agent, 0.01˜0.1 weight % of an antifoaming agent, 0.03˜0.1 weight % of a dispersing agent, 0.2˜1 weight % of a cross-linking agent, and 0.1˜0.4 weight % of a coupling agent, which are required when producing the artificial marble, based on 100 weight % of whole composition to form a first base layer; (b-2) pouring the composition for the first base layer, which is mixed through step (b-1), into a mold to form the first base layer; (c-1) mixing 60˜70 weight % of resin, 0.1˜2 weight % of pigments, 10˜29 weight % of vermiculite, and general additives including 2˜4 weight % of a curing agent, 0.4˜1 weight % of an antifoaming agent, 0.6˜1 weight % of a dispersing agent, 5˜10 weight % of a cross-linking agent, and 2˜4 weight % of a coupling agent, which are required when producing the artificial marble, based on 100 weight % of whole composition to form a second base layer; (c-2) laminating the composition for the second base layer, which is mixed through step (c-1), on an upper portion of the first base layer; (d) curing liquid-phase artificial marble composition formed by laminating the first and second base layers at a temperature of 70° C. to 90° C. for 20 minutes to 40 minutes; and (e) performing a finishing process in which the artificial marble cured through step (d) is released from the mold and subject to a sanding process.