Engineered stone and manufacturing method thereof

A method for manufacturing an engineered stone, comprising

• preparing a phosphorescent resin composition (ii) including about 8 wt % to about 15 wt % of an unsaturated polyester resin (A′), about 85 wt % to about 92 wt % of a silica-containing compound (B′), and a phosphorescent pigment (D), wherein the phosphorescent pigment (D) is included in an amount of 2 parts by weight to 5 parts by weight based on 100 parts by weight of the unsaturated polyester resin (A′), and the silica-containing compound (B′) includes about 20 wt % to about 30 wt % of a silica powder (b1′) based on a total amount of the phosphorescent resin composition (ii);
• dispersing the phosphorescent resin composition (ii) using a dispersing equipment;
• vacuum-vibration-compression molding the phosphorescent resin composition (ii) dispersed to have a predetermined shape and molding it into a sheet having a phosphorescence effect;
• crushing the sheet having the phosphorescence effect to prepare a phosphorescent chip (II);
• preparing a light transmitting resin composition (i) including about 7 wt % to about 12 wt % of an unsaturated polyester resin (A) and about 88 wt % to about 93 wt % of a silica-containing compound (B) based on a total amount of the unsaturated polyester resin (A) and the silica containing compound (B) of the light transmitting resin composition, and further including about 0.01 part by weight to about 1 part by weight of an organic/inorganic pigment (C) based on about 100 parts by weight of the unsaturated polyester resin (A′);
• mixing the light transmitting resin composition (i) with the phosphorescent chip (II) to prepare an engineered stone mixture;
• dispersing the engineered stone mixture using a dispersing equipment to have a predetermined shape;
• and
• vacuum-vibration-compression molding a uniformly distributed engineered stone mixture to manufacture an engineered stone.