| 摘要 |
PURPOSE:To improve the evenness of a substrate and reduce the cost of manufacture by interposing a 0.05-1mm thick soft and water-resistant spacer in between two substrates of float glass, blue plate glass, etc. and polishing them by means of a two-side polishing machine. CONSTITUTION:A sheet of vinyl 2 which is cut slightly smaller than two sheets of glass 1, 3 is interposed in between the two sheets of glass 1, 3. And, ten sheets of each of these integrally laminated sheets of glass and vinyl can be put in a double side polishing machine and simultaneously handled. Also, a float glass has a directional property in its thickness as a characteristic and, utilizing this lopsided thickness, a thicker side C is laminated on a thinner side A side or a thinner side D is laminated on a thicker side B side via the vinyl 2, making the whole surface nearly the same thickness. Thereby, polishing can be carried out in a short time and, due to the larger thickness of the integrally formed sheets of glass, evenness can be made higher than that when polishing a single sheet of glass, also reducing the degree of warpage due to polishing.
|
