| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a building glass article which is excellent in both the mechanical strengths and decorativeness as an exterior material, an internal material and an interior use materials of buildings and to provide a manufacturing method therefor. <P>SOLUTION: The building glass article is an article laminated and fused each other with such three glass layers consisting of at least two kinds of glasses having different expansion coefficients consisting of an intermediate layer 2 of the three glass layers having a higher expansion coefficient than those of the external layers 1 and as the expansion coefficient difference between the intermediate layer 2 and the external layers 1 is preferably not less than 3×10<SP>-7</SP>/K and not more than 15×10<SP>-7</SP>/K. The manufacturing method for the building glass article comprises placing in a refractory vessel in order from the bottom the first material, then thereon the second material having the higher expansion coefficient than that of the first material, and moreover thereon the third material having a lower expansion coefficient than that of the second material, and then fusing and uniting the glass materials in this refractory vessel by heat treating at a temperature of their softening points or higher. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
