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Process for cleaning optical resin lens substrate and forming mould

An optical resin lens and molding die technology, applied in the field of cleaning technology, can solve the problems of difficult neutralization treatment, high production cost, volatile organic solvent, etc., and achieve the effects of simple discharge treatment, high cleaning efficiency and good economy.

Inactive Publication Date: 2012-07-25
王家德
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Strong acid (sulfuric acid) and strong alkali (caustic soda) have a strong corrosive effect on human body and equipment, and they must be neutralized in the treatment pool before they can be discharged; due to the difficulty of neutralization and the increase of production costs, many manufacturers have not If the standard is met, it will be discharged directly, resulting in a large area of ​​land without grass; the organic solvent (dichloroethane) is easy to volatilize and is toxic to the human body, and the workers on the production line must be replaced every year; its production cost is also high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] a. Preparation of cleaning solution

[0021] Mix 2Kg of sodium alkylsulfonate, 1Kg of TX-10, and 1Kg of citric acid, then add 5% sodium hydroxide to neutralize to pH 7, add 95.7Kg of water to obtain a cleaning solution;

[0022] b. Cleaning

[0023] Mix the prepared cleaning solution with water at a volume ratio of 1:1.5 to prepare an aqueous cleaning solution, put the aqueous cleaning solution in a cleaning tank connected to an ultrasonic generator, heat it to 45°C, and put the forming mold into In the cleaning tank, start the ultrasonic generator to clean the forming mold for 2 minutes, and the frequency of the ultrasonic generator is 120KHz;

[0024] c. Rinse

[0025] Put clean water into a rinsing tank connected to an ultrasonic generator, heat it to 70°C, put the cleaned molding mold into the rinsing tank, start the ultrasonic generator, and rinse the molding mold in the rinsing tank for 3 minutes, the ultrasonic generator frequency is 100KHz;

[0026] d. Rinse...

Embodiment 2

[0031] a. Preparation of cleaning solution

[0032] Mix 3Kg of sodium alkylsulfonate, 1.5Kg of TX-10, and 2Kg of citric acid, then add 2% sodium hydroxide to neutralize to pH 7, add 94.2Kg of water to obtain a cleaning solution;

[0033] b. Cleaning

[0034] Mix the prepared cleaning solution with water at a volume ratio of 1:3 to prepare an aqueous cleaning solution, put the aqueous cleaning solution in a cleaning tank connected to an ultrasonic generator, heat it to 60°C, and remove the molded Put the optical resin lens substrate into the cleaning tank, start the ultrasonic generator, and clean the optical resin lens substrate for 1.5 minutes, and the frequency of the ultrasonic generator is 70KHz;

[0035] c. Rinse

[0036] Put clean water into a rinsing tank connected to an ultrasonic generator, heat it to 65°C, put the cleaned optical resin lens substrate into the rinsing tank, start the ultrasonic generator, and clean the optical resin lens substrate in the rinsing tan...

Embodiment 3

[0042] a. Preparation of cleaning solution

[0043] Mix 4Kg of sodium alkyl sulfonate, 2.5Kg of TX-10, and 1.5Kg of citric acid, then add 10% sodium hydroxide to neutralize to a pH value of 7.5, and add 92.6Kg of water to obtain a cleaning solution;

[0044] b. Cleaning

[0045] Mix the prepared cleaning solution with water at a volume ratio of 1:2 to prepare an aqueous cleaning solution, put the aqueous cleaning solution in a cleaning tank connected to an ultrasonic generator, heat it to 55°C, and put the forming mold into In the cleaning tank, start the ultrasonic generator to clean the forming mold for 3 minutes, and the frequency of the ultrasonic generator is 140KHz;

[0046] c. Rinse

[0047] Put clean water into the rinsing tank connected to the ultrasonic generator, heat it to 60°C, put the forming mold into the rinsing tank, start the ultrasonic generator, and rinse the forming mold in the rinsing tank for 2.5 minutes, and the ultrasonic wave will generate The freq...

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PUM

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Abstract

The invention discloses a process for cleaning an optical resin lens substrate and a forming mould. The process includes the steps of cleaning liquid preparation, ultrasonic cleaning, ultrasonic rinsing, drying and the like. The cleaning liquid is prepared by adding, in weight percent, 1-10% of alkyl sodium sulfonate, 1-5% of TX-10 and 1-5% of citric acid into sodium hydroxide with the concentration of 1-10% after mixing, neutralizing the mixture to reach the pH (potential of hydrogen) value ranging from 7 to 7.5, and adding water to reach 100%. The cleaning liquid is high in cleaning strength, dirt such as resin, adhesive, fingerprint, grinding residue and the like adhered to the surface of the resin lens substrate or the forming mould can be rapidly removed, the surface of the substrate or the forming mould is not damaged, water solution in the cleaning liquid can be reused, and the cleaning liquid is fine in economical efficiency, safe in use, simple in discharge, environment-friendly, non-corrosive, non-volatile, non-hazardous and non-combustible.

Description

technical field [0001] The invention relates to a cleaning process, in particular to the cleaning process of the substrate and molding die of the optical resin lens during the production process. Background technique [0002] The production process of optical resin lens is: forming mold (glass)→mold cleaning→mold assembly→filling→primary curing→release→substrate edge grinding→substrate cleaning→secondary curing→testing→delivery. Among them, the forming mold is used repeatedly, because the filling in the mold is pre-polymerized to a certain viscosity according to a certain formula (CR-39 monomer, initiator, ultraviolet light absorber, antioxidant, additive), and vacuum desorbed. After the prepolymer is air-gas, after the substrate is released, the resin monomer, binder, and grinding slag adhere to the surface of the substrate and the molding mold. At present, most domestic manufacturers use strong acid (sulfuric acid), strong alkali (caustic soda) or organic solvent (dichlor...

Claims

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Application Information

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IPC IPC(8): B08B3/12
Inventor 王家德
Owner 王家德
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