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Glass egumming agent and degumming method

A degumming agent, glass technology, applied in the direction of cleaning methods and utensils, chemical instruments and methods, cleaning methods using tools, etc., can solve the problems of material waste, long time required for degumming, strong resin solubility, etc. The steps are simplified, the degumming time is shortened, and the product yield is high.

Inactive Publication Date: 2019-11-12
LENS TECH CHANGSHA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Damage the LOGO (logo) printed with ink on the glass surface. The reason is that the LOGO ink printed on the glass surface is mainly composed of resin, the existing degumming agent is alkaline, and the pH value is above 12. The metal oxide or metal reacts, causing the logo to be damaged. The main component of the organic matter in the degumming agent is ether. The ether is too soluble to the resin in the ink, causing the ink to fall off and dissolve.
[0005] 2. The existing glass degumming agent is generally alkaline degumming agent, while mobile phone and flat glass are generally soda-lime glass. During the soaking process of accepting alkaline degumming agent, the sodium-calcium oxide in the glass is easily dissolved and corroded, thus Small depressions occur on the glass surface, forming defects similar to being scratched, making the glass unable to perform subsequent secondary bonding, resulting in waste of materials and increasing production costs
[0006] 3. The existing glue remover is not thorough enough to remove glue, and it takes a long time to remove glue, which affects product quality and production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A glass degumming agent, especially suitable for removing OCA high transparent glue on glass substrates. The glass degumming agent includes the following components in terms of mass percentage: acetophenone 28%, dimethyl sulfoxide 20%, alkyl glycosides 2%, glycolic acid 1.5%, deionized water 48.5%, the pH value of the glass degumming agent is 7-8.

[0034] The method for degumming using the above glass degumming agent specifically includes the following steps:

[0035] Step 1. Defilining: take the glass degumming agent and dilute it with water to a 15% degumming solution, heat the degumming solution to 82°C, and soak the glass to be degummed in the degumming solution at 82°C for 12 minutes;

[0036] Step two, cleaning, specifically: cleaning agent cleaning and degreasing: prepare a water-based cleaning agent with a mass fraction of 3% and a temperature of 52°C (using a cleaning agent conventionally used in this field for degumming, such as YA-78-02c ), pour the water-based cl...

Embodiment 2

[0040] The difference between this embodiment and embodiment 1 is that the glass degumming agent includes 25% acetophenone, 25% dimethyl sulfoxide, 3% alkyl glycoside, 0.5% glycolic acid and 46.5% deionized water in terms of mass percentage. The pH value of the glass degumming agent is about 9.

[0041] The method for degumming using the above glass degumming agent includes the following steps:

[0042] Step 1. Defilining: Take the glass degumming agent and dilute with water to a 10% degumming solution, heat the degumming solution to 80°C, and soak the glass to be degummed in the degumming solution at 80°C for 10 minutes;

[0043] Step two, cleaning: cleaning agent cleaning and degreasing: prepare a water-based cleaning agent with a mass fraction of 2% and a temperature of 50°C, pour the water-based cleaning agent into the cleaning tank of the tablet machine 1, and pour the glass processed in step 1 It is placed on the conveyor belt in the washing tank of the flatbed machine for cle...

Embodiment 3

[0046] The difference between this embodiment and embodiment 1 is that the glass degumming agent includes 30% acetophenone, 15% dimethyl sulfoxide, 2% alkyl glycoside, 1% glycolic acid and 52% deionized water in terms of mass percentage. The pH value of the glass degumming agent is about 8.

[0047] The method for degumming using the above glass degumming agent includes the following steps:

[0048] Step 1. Defilining: Take the glass degumming agent and dilute with water into a 20% degumming solution, heat the degumming solution to 85°C, and soak the glass to be degummed in the degumming solution at 85°C for 15 minutes;

[0049] Step two, cleaning: cleaning agent cleaning and degreasing: prepare a water-based cleaning agent with a mass fraction of 4% and a temperature of 55°C, pour the water-based cleaning agent into the cleaning tank of the tablet machine 1, and pour the glass processed in step 1 It is placed on the conveyor belt in the washing tank of the flatbed machine for clean...

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PUM

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Abstract

The invention discloses a glass degumming agent and a degumming method. The glass degumming agent comprises following components, by mass, 25 to 30% of a main solvent, 15 to 25% of a cosolvent, 1 to 3% of a surfactant, 0.5 to 2% of a pH adjuster, and the balance deionized water. The main solvent is at least one selected from acetophenone, anisole, cyclohexanol, and phenol; the cosolvent is at least one selected from dimethyl sulfoxide, dipropylene glycol dimethyl ether, and 1,4-butyrolactone. According to a preparation method, co-effect and mutual cooperation of the main solvent, the cosolvent, the surfactant, and the pH adjuster are capable of realizing high qualified rate degumming; technical problems in the prior art are solved; practical application value is high; great enterprise economical benefit is achieved; the degumming method technology is simplified; technology parameters are easy to control; complete degumming is realized; no product defect such as recess or scratch is caused after degumming; and product qualified rate is high.

Description

Technical field [0001] The invention relates to the technical field of glass degumming, in particular to a glass degumming agent and a degumming method. Background technique [0002] With the continuous development of electronic digital products such as mobile phones and tablets, 2D, 2.5D and 3D glass are widely used on the front and back covers of mobile phones, especially 2.5D and 3D curved glass, which is thin, transparent, clean and resistant. Fingerprints, anti-glare, scratch resistance, weather resistance and other advantages are widely used in electronic products such as mobile phones and tablets. In the rework production process of the glass front cover and back cover, a degumming agent is often used to remove the OCA glue on the glass surface. For example: the glass back cover needs to use OCA optical glue to attach the fingerprint module, because OCA optical glue has bubble defects or The problem of fingerprint module position sticking also requires the use of a degumm...

Claims

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Application Information

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IPC IPC(8): C11D1/66C11D3/44C11D3/20C11D3/34C11D3/60C11D11/00B08B3/02B08B1/02B08B3/08
CPCC11D1/662C11D3/43C11D3/2024C11D3/2003C11D3/2068C11D3/2072C11D3/2096C11D3/2086C11D3/2082C11D3/3454B08B3/02B08B3/08B08B1/12B08B1/20C11D2111/18
Inventor 饶桥兵蔡杰勇
Owner LENS TECH CHANGSHA
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