Production method of cover plate glass

Abstract

The invention relates to the technical field of glass production and discloses a production method of cover plate glass. The production method comprises the following steps: S1, mixing and melting various glass raw materials; S2, shaping a product obtained in the step S1 by using an overflowing method so as to directly obtain cover plate glass of which the size is adaptive to that of a display screen; S3, carrying out annealing treatment on the cover plate glass, and at a later annealing stage, when the temperature of the cover plate glass is reduced to a strain point temperature or less and is higher than 360 DEG C, carrying out chemical intensification treatment on the cover plate glass directly; S4, carrying out laser shaping on the cover plate glass. By adopting the production method of the cover plate glass, on one hand, procedures such as cutting are avoided, the consequence that the strength and the surface quality are degraded because of cutting is avoided, in addition, as thesize of the cover plate glass is small, the surface quality is easy to control, and the tonnage of equipment can be reduced; on the other hand, a procedure that the temperature is reduced to the roomtemperature at the later annealing stage and the heating process at a former chemical intensification treatment stage are avoided, energy conservation and environment protection are achieved, and theproduction cycle is shortened.

Description

technical field [0001] The invention relates to the technical field of glass production, in particular to a production method of cover glass. Background technique [0002] Cover glass is mainly used in touch screens of electronic products such as mobile phones or tablets. At present, when the cover glass is produced, the large-sized original glass is usually produced in the mother glass factory and annealed, and then the original glass is packaged and transported to the downstream deep-processing enterprises. Cutting, forming, cleaning, chemical strengthening, screen printing and other processing of large size original glass. [0003] However, in this production method, first of all, due to the large size of the original glass, it is difficult to control the surface quality and flatness, and requires large-tonnage production equipment; secondly, the original glass needs to be packaged and transported, which increases the production cost. ; Again, it is necessary to cut the...

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Problems solved by technology

[0006] Based on the above, the purpose of the present invention is to provide a production method of cover glass to solve the technical problems of cover glass in the prior art, such as poor strength and surface quality, complicated process, waste of energy, and long production cycle.

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