Method of manufacturing panel glass

Abstract

A process for producing a plate glass, characterized in that in the method of continuously forming of glass into a plate, continuously traveling glass before solidification on at least its underside is supported by a gas emitted from a support member and with any gravitational effect on the glass controlled, partial displacement and deformation while shifting the position thereof are repeatedly exerted on the glass so as to achieve propagation over the entirety of the glass and expansion thereof. Thus, there is provided a technology that attains resolution or improvement as to the drawbacks, restraints, etc. of the prior art, being simple and easy, and that markedly alleviates the problems of energy, resources and environment, and that produces a high-quality plate glass with flawless surface. Furthermore, there is provided a new technology that through clarification of important technical aspects and factors in principle and fundamentally lacking in the method making use of vapor films, produces a high-quality plate glass excelling in not only microscopic smoothness but also macroscopic thickness uniformity and planarity, etc. throughout plate glass forming processes utilizing an increased variety of gases.

Description

technical field [0001] The invention relates to a method for preparing high-quality plate glass with less surface defects and impurities and nano-level surface smoothness. Background technique [0002] Sheet glass for construction and vehicles is almost always produced in advanced countries by the tin float method in which molten glass flows out on a tin bath and is slowly formed into a flat plate. [0003] When manufacturing thin plates that do not allow impurities such as tin to be mixed into the surface of displays, etc., and require high quality and high flatness, there are many cases where the so-called fusion method is used. In this fusion method, molten glass overflows from both sides of the platinum cylinder. , after allowing it to flow down the platinum guide, combine the glass from both sides into one. [0004] In addition, in the case of glass with mesh, etc., it is manufactured by laminating and molding while applying pressure with a metal roller so that a mesh ...

AI Technical Summary

Problems solved by technology

[0026] The object of the present invention is to provide a method that can solve and improve the disadvantages and constraints of existing known technologies such as the down-drawing method represented by the above-mentioned tin bath method and the fusion method, and the metal roll rolling method. To alleviate the problems of energy, resources and the environment, to provide high-quality plate glass technology with no defects on the surface, at the same time, to clarify the important technical viewpoints and elements that are fundamentally and fundamentally lacking in the method of using the vapor film, and to provide A new technology for manufacturing high-quality plate glass, which involves a wider range of plate glass forming methods using gas. The plate glass produced has nano-level smoothness, and at the same time has excellent macroscopic thickness uniformity and flatness.

Images