| 摘要 |
PROBLEM TO BE SOLVED: To obtain a crystallized-glass building material having a desired pattern on its surface by arranging an inorg. pigment powder or a mixture of the powder and a glass small body on the specified glass small body accumulated in a formwork and heat-treating it. SOLUTION: The glass small body consisting of, by weight, 2-15% Al2 O3 , 3-15% CaO, 0-15% ZnO, 0-20% BaO, 0-10% B2 O3 and 2-20% (Na2 O+K2 O+Li2 O), depositingβ-wollastonite as the main crystal, depositing a needle crystal from the surface toward the inside while being softened and deformed when heated above the softening point and having 0.5-10mm diameter is accumulated in a formwork. An inorg. pigment powder or a mixture of the powder and the glass small bodies having <=2mm diameter is arranged thereon to draw a pattern and heat-treated above the softening point of the glass small body to fuse the ground part of light-transmissive crystallized glass having 1mm thickness and >=35% average transmissivity to the patterned part consisting of the inorg.
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