Patent ID: 7935281

Claim:
A method for preparing an artificial marble, comprising the steps of: (a) adding pigments to artificial marble raw materials to prepare two or more slurries having different colors; (b) feeding the two or more slurries into a batch mixer through respective supply lines, and partially dispersing the slurries in the batch mixer by mixing the slurries using a non-agitation type low speed impeller at a speed of 60 rpm or lower to spread the slurries of different colors and form a boundary therebetween including at least two pigment compositions of adjacent color regions to exhibit a different color from the adjacent color regions; (c) making the partially dispersed slurry mixture into a flat plate; (d) curing the flat plate and crushing the cured plate into multicolor chips; and (e) applying the multicolor chips to a slurry of artificial marble raw material to produce the artificial marble containing the multicolor chips.