Anti-lateral erosion technology for chemically forming toughened glass cover lens

Abstract

The invention discloses an anti-lateral erosion technology for chemically forming a toughened glass cover lens. The anti-lateral erosion technology comprises the following steps: cleaning a substrate glass sheet, sticking blank tabs (PVC protective layers); heating and vacuumizing for 1 hour in a vacuum drying oven; and etching with hydrofluoric acid. The invention provides the novel technology widely used for chemically forming a capacitance type touch screen glass cover lens. In the chemical forming process of the capacitance type touch screen glass cover lens, when ineffective parts are etched with hydrofluoric acid, hydrofluoric acid laterally etches from the edge of the protective layers to damage effective parts. By using a vacuum drying technology, the blank tags are heated at a certain temperature and under the standard vacuum environment to ensure the edges of the protective layers to be quickly closed up to effectively prevent the lateral erosion. Through the method, the blank tags are dried quickly, the lateral erosion is reduced effectively, and the processing efficiency and the yield of the glass cover lens are improved.

Description

technical field [0001] The invention relates to a molding technology of a tempered glass cover plate (Cover lens), in particular to an anti-side erosion technology during hydrofluoric acid etching and molding of a tempered glass cover plate. Background technique [0002] At present, the same industry both at home and abroad adopts the physical method, that is, CNC to process the cover lens. Its disadvantages are: low CNC machining efficiency, large investment in equipment and workshops, and thus high production costs. Using hydrofluoric acid etching molding process to process Cover lens can significantly improve work efficiency and greatly reduce production cost. The key technology of hydrofluoric acid etching and forming cover lens is the generation of substrate glass protective layer. The solution is to use PVC self-adhesive film material and punch it into a PVC film layer that is consistent with the shape of the target product (cover lens) (referred to as blank label), ...

AI Technical Summary

Problems solved by technology

Its disadvantages are: low CNC machining efficiency, large investment in equipment and workshops, and thus high production costs

However, the method of natural drying blank labels not only takes a long time to dry, but also requires a lot of pressure on storage and space, and is also greatly affected by seasons. Therefore, it is difficult to implement industrial production. It is necessary to find a fast and effective method for drying blank labels. Hydrofluoric acid etching molding technology can be applied in industrial production

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