Curved surface composite cover plate and preparation method thereof

Abstract

The invention relates to a curved surface composite cover plate. The curved surface composite cover plate comprises curved surface glass and a plastic cover plate; a preparation method for the curvedsurface glass comprises the following steps: acquiring a curved surface clamp, fixing a glass sheet in the curved surface clamp, and enabling the glass sheet to keep a curved surface appearance; the first time of tempering: performing first tempering treatment on the glass sheet, cooling, preparing semi-tempered glass of which a tempering depth is 1 / 10-1 / 1.5 of a preset tempering depth of the glass sheet; the second time of tempering: performing second tempering treatment on the semi-tempered glass, cooling, preparing tempered glass of which the tempering depth is the preset tempering depth ofthe glass sheet, to obtain the curved surface glass. The above curved surface composite cover plate is capable of combining the above curved surface glass and the plastic cover plate. Compared with the single curved surface glass and the plastic cover plate, the curved surface composite cover plate has the better shape memory characteristics, the more excellent anti-explosion property and the better toughness.

Description

technical field [0001] The invention relates to the field of composite cover plate production, in particular to a curved surface composite cover plate and a preparation method thereof. Background technique [0002] With the development of science and technology, curved glass prevails, and the market prospect is broad. Existing curved glass is mostly produced by hot press molding. On the one hand, this method has a high molding temperature, which leads to rapid oxidation of the forming mold, and the reusability of materials / moulds cannot be realized, resulting in high production costs. On the other hand, the bending deformation of the glass cover after hot pressing deformation is small, special equipment and instruments are required for bonding, the process is complicated, the cost is high, and the explosion-proof performance of a single piece of glass is poor, so it is not suitable for high-explosion-proof and safe applications such as vehicles. Where bending deformation is...

AI Technical Summary

Problems solved by technology

Most of the existing curved glass is produced by hot pressing. On the one hand, this method has a high forming temperature, which leads to rapid oxidation of the forming mold and cannot realize the reuse of materials / moulds, resulting in high production costs.

On the other hand, the bending deformation of the glass cover after hot pressing deformation is small, special equipment and instruments are required for bonding, the process is complicated, the cost is high, and the explosion-proof performance of a single piece of glass is poor, so it is not suitable for high-explosion-proof and safe applications such as vehicles. Where bending deformation is required

[0003] The plastic cover is suitable for large deformation and flexible applications, but its surface hardness is low and easy to scratch

In the flexible screen made of thin plastic cover plate, the force and deformation of the cover plate are easily transmitted to the display screen, which is not conducive to the durable use of the display screen, and the plastic cover plate is easily deformed and broken under the condition of external force, which damages the display screen

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