| 摘要 |
764,217. Enamelling. GENERAL CERAMICS CORPORATION. Jan. 18, 1955 [Feb. 11, 1954], No. 1531/55. Drawings to Specification. Class 56 Aluminium foil of a thickness less than 0.003 mms. is enamelled by applying thereto a slip which will mature between 940 and 1040‹F., passing the coated foil through a chamber wherein the slip is matured at that temperature, and then passing the coated foil through a heated ironing device. The frit of the slip may comprise in parts per cent, LiO 2 5-15; BaO 3-10; B 2 O 3 5-10; Al 2 O 3 0-15; P 2 0 5 5-15; SiO, 5-25; the balance being made up of CaO, K 2 O, Na 2 O, TiO 2 , ZrO 2 or mixtures thereof and the suspending medium of the slip may be isopropyl alchol and water. |
