Curved composite cover plate and preparation method thereof

A curved surface and cover plate technology, which is applied in glass manufacturing equipment, chemical instruments and methods, manufacturing tools, etc., can solve the problems of high manufacturing cost, low surface hardness, and unfavorable durable use of display screens.

Active Publication Date: 2021-04-09
VITALNK IND SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Curved composite cover plate and preparation method thereof
  • Curved composite cover plate and preparation method thereof
  • Curved composite cover plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment provides a curved glass and a preparation method thereof, comprising the following steps:

[0044] Step 1. Obtain the 0.68mm Corning Gorilla Glass 3, cut it and cut it to the required size to obtain the cut glass.

[0045] Carve and polish the cut glass to obtain glass sheets.

[0046] Step 2. Prepare the imitation curved surface fixture according to the four-side profile curve of the required curved surface glass. In this embodiment, the structure of the curved surface fixture is as follows figure 1 As shown, the above-mentioned curved surface fixture is also provided with vacuum adsorption air holes, which is convenient for the glass sheet to be effectively fixed in the curved surface fixture. Fix the glass sheet in the curved surface fixture, make the glass sheet maintain the curved shape of the curved surface under external force, and clean it. The above-mentioned curved surface fixture is made of low-cost steel, which reduces the preparation cost ...

Embodiment 2

[0056] This embodiment provides a curved glass and a preparation method thereof, comprising the following steps:

[0057] Step 1. Obtain the 0.68mm Corning Gorilla Glass 3, cut it and cut it to the required size to obtain the cut glass.

[0058] Carve and polish the cut glass to obtain glass sheets.

[0059] Step 2, use such as figure 1 The shown curved surface fixture clamps and fixes the glass sheet, so that the glass sheet maintains the curved shape of the curved surface under external force, and cleans. The above-mentioned curved surface fixture is made of iron.

[0060] Step 3. Put the glass sheet fixed in the curved surface fixture into the chemical molten salt furnace for the first tempering treatment. The tempering conditions are: the molten salt is potassium nitrate solution, the temperature is 420°C, and the time is 1.5h. Cool and clean. Preparing semi-tempered glass whose tempering depth is 1 / 10-1 / 1.5 of the preset tempering depth of the glass sheet.

[0061] St...

Embodiment 3

[0068] This embodiment provides a curved glass and a preparation method thereof, comprising the following steps:

[0069] Step 1. Obtain 0.33mm CSG white glass, cut it and cut it to the required size to obtain cut glass.

[0070] Carve and polish the cut glass to obtain glass sheets.

[0071] Step 2, prepare as Figure 5 As shown in the curved surface fixture, the curved surface fixture is a rectangular parallelepiped frame, and the inner wall of the frame is provided with a wedge-shaped clamping part for clamping the four edges of the glass sheet, so that the glass sheet can maintain the curved shape of the curved surface under external force and can be cleaned. The material of the above-mentioned curved surface fixture is iron, and the cost is low.

[0072] Step 3. Put the glass sheet fixed in the curved surface fixture into the chemical molten salt furnace for the first tempering treatment. The tempering conditions are: the molten salt is potassium nitrate solution, the t...

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Abstract

The invention relates to a curved surface composite cover plate, which includes curved surface glass and a plastic cover plate; the preparation method of the curved surface glass comprises the following steps: obtaining a curved surface fixture, fixing a glass sheet in the curved surface fixture, so that the glass piece maintains a curved surface appearance; The first tempering: the glass sheet is tempered for the first time, cooled to prepare semi-tempered glass whose tempering depth is 1 / 10‑1 / 1.5 of the preset tempering depth of the glass sheet; the second tempering: semi-tempered The glass sheet is subjected to a second tempering treatment, cooled, and a tempered glass having a tempering depth equal to the predetermined tempering depth of the glass sheet is prepared. The above-mentioned curved composite cover plate combines the above-mentioned curved glass with a plastic cover plate, and has better shape memory properties, more excellent explosion-proof properties and better flexibility than a single piece of curved glass and plastic cover plates.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B17/10B32B27/36B32B27/30B32B37/12C03C21/00C03B27/03G06F3/041
CPCB32B17/064B32B27/308B32B27/36B32B27/365B32B37/12B32B2457/206B32B2457/208C03B27/03C03C21/002G06F3/0412G06F2203/04103
Inventor 刘国祥李可峰
Owner VITALNK IND SHENZHEN
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