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Method for reinforcing high-strength protective glass

A protective glass and high-strength technology, applied in the field of glass strengthening, can solve the problems of glass strength reduction, cost increase, glass surface uniformity cannot be guaranteed, etc., and achieve the effect of property improvement

Active Publication Date: 2016-06-08
SICHUAN HONGKE INNOVATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the etching thickness increases, the uniformity of the glass surface cannot be guaranteed, resulting in polishing after etching, which greatly increases the cost
At the same time, the etched glass has to be cut by a cutting machine and ground by a fine engraving machine, which will lead to the reappearance of micro-cracks on the glass surface, and eventually lead to a decrease in the strength of the chemically strengthened glass.

Method used

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  • Method for reinforcing high-strength protective glass
  • Method for reinforcing high-strength protective glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. The glass is edged, chamfered and punched by the engraving machine;

[0029] 2. Chemical pretreatment: Place the glass in molten potassium nitrate salt for high temperature pretreatment. The pretreatment temperature is 380°C and the chemical strengthening time is 30 minutes;

[0030] 3. Ultrasonic cleaning: use 8-10wt% lye for initial washing, and the cleaning time is 5 minutes; then use 4-6wt% lye for fine washing, and the cleaning time is 5 minutes; then rinse with pure water, and the cleaning time is 20 minutes ~ 25 minutes, pure water is 12 ~ 18 trillion; after washing with pure water, slowly dehydrate and then air dry;

[0031] 4. Micro-etching treatment: Soak the glass in the micro-etching medium or evenly spray the micro-etching medium on the glass surface. The micro-etching treatment time is 2-15 minutes. The micro-etching medium package is expressed in mass percentage, HF: 1 %, H 2 SO 4 : 3%, HNO 3 : 4%, the rest is pure water.

[0032] 5. Chemical stre...

Embodiment 2

[0034] 1. The glass is edged, chamfered and punched by the engraving machine;

[0035] 2. Chemical pretreatment: place the glass in molten potassium nitrate salt for high temperature pretreatment, the pretreatment temperature is 400°C, and the chemical strengthening time is 2 minutes;

[0036] 3. Ultrasonic cleaning: use 8-10wt% lye for initial washing, and the cleaning time is 5 minutes; then use 4-6wt% lye for fine washing, and the cleaning time is 5 minutes; then rinse with pure water, and the cleaning time is 20 minutes ~ 25 minutes, pure water is 12 ~ 18 trillion; after washing with pure water, slowly dehydrate and then air dry;

[0037] 4. Micro-etching treatment: Soak the glass in the micro-etching medium or evenly spray the micro-etching medium on the glass surface. The micro-etching treatment time is 2-15 minutes. The micro-etching medium package is expressed in mass percentage, HF: 5 %, H 2 SO 4 : 4%, the rest is pure water.

[0038] 5. Chemical strengthening tre...

Embodiment 3

[0040] 1. The glass is edged, chamfered and punched by the engraving machine;

[0041] 2. Chemical pretreatment: place the glass in molten potassium nitrate salt for high temperature pretreatment, the pretreatment temperature is 390°C, and the chemical strengthening time is 10 minutes;

[0042] 3. Ultrasonic cleaning: use 8-10wt% lye for initial washing, and the cleaning time is 5 minutes; then use 4-6wt% lye for fine washing, and the cleaning time is 5 minutes; then rinse with pure water, and the cleaning time is 20 minutes ~ 25 minutes, pure water is 12 ~ 18 trillion; after washing with pure water, slowly dehydrate and then air dry;

[0043] 4. Micro-etching treatment: Soak the glass in the micro-etching medium or evenly spray the micro-etching medium on the glass surface. The micro-etching treatment time is 2-15 minutes. The micro-etching medium package is expressed in mass percentage, HF: 3 %, H 2 SO 4 : 1%, HNO 3 : 2%, the rest is pure water.

[0044] 5. Chemical str...

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Abstract

The invention discloses a method for reinforcing high-strength protective glass. The method includes steps of carrying out edge polishing, chamfering and punching treatment on the glass by the aid of an engraving machine; ultrasonically cleaning the glass and carrying out micro-etching treatment and chemical reinforcing treatment on the glass. The method further includes a step of carrying out chemical reinforcing pretreatment on the glass. The chemical reinforcing pretreatment can be carried out on the glass after the punching treatment and before the glass is ultrasonically cleaned or between the micro-etching treatment and the chemical reinforcing treatment. The method has the advantages that tin-doped layers and micro-crack on glass surface layers can be removed, double chemical reinforcing processes and a micro-etching process are combined with one another, and accordingly the glass can be greatly enhanced.

Description

technical field [0001] The invention relates to the field of glass strengthening, in particular to a strengthening method for high-strength protective glass. Background technique [0002] With the rapid development of the smart touch industry, there are currently two major technical issues facing glass substrates for display device protection. One is the transition from the thickness of the glass to thinning. Currently, 0.70-0.40mm glass is the mainstream product of cover protection glass, and 0.40mm ultra-thin glass is the leading technology. The other is the surface strength of the glass. Generally, the thinner the glass, the stronger it will be after chemical strengthening than the thicker glass, which means that the mobile phone assembled with it is more likely to be broken. [0003] At present, the protective glass used for display devices must undergo edge grinding, chamfering and drilling by Jingdiao machines. Since the Jingdiao machine uses a high-speed rotating sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C21/00C03C15/00
CPCC03C15/00C03C21/002
Inventor 宫汝华沈子涵展贵鑫任书明
Owner SICHUAN HONGKE INNOVATION TECH CO LTD
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