Feuerbeständiges Glas

摘要

PCT No. PCT/GB92/01858 Sec. 371 Date Apr. 8, 1994 Sec. 102(e) Date Apr. 8, 1994 PCT Filed Oct. 12, 1992 PCT Pub. No. WO93/07099 PCT Pub. Date Apr. 15, 1993Sheet glass (2) is rendered fire resistant such that it will not shatter under a build-up of heat to 900 DEG C., by providing a thin coating (1) on one or both its surfaces, the coating being stable and adherent to the glass at up to 900 DEG C., the coating preferably comprising an oxide, nitride, oxynitride or fluoride of a metal or of silicon, or a metal silicide, the sheet having been toughened by tempering before or after coating and having its edges (3) ground and polished before the tempering step to remove all imperfections therefrom.