| 摘要 |
1,253,720. Shaping or tempering glass. COMPAGNIE DE SAINT-GOBAIN. 25 March, 1969 [26 March, 1968], No. 15609/69. Heading C1M. In shaping or tempering a glass sheet 9 the sheet is placed in a flat receptacle 2 of refractory fabric, the vertically suspended sheet is heated in a furnace 1 to soften it and is then shaped or tempered in the receptacle by bringing into contact with at least one solid member 4. The receptacle may be of woven glass fibre, silica fibre or metal wire, and the fabric is preferably 0À03-0À5 mm. thick. The receptacle may be open or sealed along its sides, and may be formed from one or two sheets of the fabric. In shaping heated glass the glass may be pressed between two rigid complementary members, or between one rigid member 4 and a flexible member 5 formed of a sheet of refractory fabric elastically mounted on the frame 8. The rigid member 4 may be a glass sheet, particularly where two sheets which conform in shape are needed, e.g. in making a glass laminate. For tempering the glass is pressed between two solid cooling members. Specification 1,158,360 is referred to. |
