Patent ID: 8304356
Filing Date: 2012-11-06
Classification: A61K,C03C

Abstract:
1. A method for manufacturing a porcelain stain, comprising: a Step 1 of forming aluminosilicate glass A having a sintering temperature of 760-820 ° C. and a linear thermal expansion coefficient of 6.0×10 SiO B Al Li Na K CaO : 1.0-5.0% by weight, MgO : 0.1-1.0% by weight, Sb a Step 2 of obtaining a glass lump by cooling a melt of the aluminosilicate glass A, and drying and grinding the glass lump to form glass frit having an average particle size of 3-8 μm; a Step 3 of forming aluminosilicate glass B having a sintering temperature of 800-860 ° C. which is different from by 40° C. or more than that of the aluminosilicate glass A and a linear thermal expansion coefficient of 6.0×10 SiO B Al Li Na K CaO : 1.0-5.0% by weight, MgO : 0.1-1.0% by weight, Sb a Step 4 of obtaining a glass lump by cooling a melt of the aluminosilicate glass B, drying and grinding the glass lump to form glass frit having an average particle size of 3-8 μm; and a Step 5 of mixing the glass frit obtained in Step 2, the glass frit obtained in Step 4 and a coloring material to manufacture a porcelain stain having a sintering temperature of 760-860 ° C. and a linear thermal expansion coefficient of 6.0×10