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Lens anti-static protective film coating method and lens with anti-static protective film

A protective film, anti-static technology, applied in the field of spectacle lenses, can solve the problems of dust pollution, toxic solvent harmfulness, etc., and achieve the effects of preventing static electricity, ensuring axial position, and preventing the performance of excessive water generation.

Inactive Publication Date: 2010-05-12
CHEMILENS JIAXING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problems that may occur in the circulation process of the existing ultra-hydrating lenses after production, including the film peeling problem caused by the poor adhesive of the protective film layer, the pollution problem caused by the adhesion of dust caused by static electricity, and the hazards caused by the use of toxic solvents

Method used

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  • Lens anti-static protective film coating method and lens with anti-static protective film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The composition of the lens 1-time coating solution is: PVB 15%, solvent methanol 81.5%, stabilizer and uniformity additive 3%, antistatic antistatic agent 0.5% (domestic Sino-Japanese Vulcanization (Co., Ltd.) JISTAT2000NT), mixed and stirred 24 hours to make the first coating solution for the lens, after soaking the primer lens, dry it at 50 degrees for 5 minutes to form the first coating layer. The above percentages are percentages by weight.

[0030] Make a secondary film coating solution for lenses: the weight ratio of fluororesin (DYNEON TM220 from DYNEON, Germany) to water is 1:4 (water: fluororesin = 4:1), fully stir after dilution to make a secondary film coating solution . Soak the above-mentioned lenses in the second-time coating solution to form the first-time coating layer, and dry them at 60 degrees for 30 minutes to obtain the second-time coating lenses.

Embodiment 2

[0032] One-time filming solution for making lens surface: 18% of commercially available water-soluble polyurethane, 77.5% of solvent water, 2% of polyurethane strengthening agent, for anti-static, polyurethane adopts Sino-Japanese vulcanization TAT 2000NT0.5% with anti-static agent, In order to ensure the stability and uniformity of the mixed solution, add 2% additives, mix the above components and stir for 24 hours to make a first-time coating solution, and soak the lens with water-emitting surface in the above-mentioned first-time pseudo-film solution, After taking it out, dry it at 50 degrees for 2 minutes. The above percentages are percentages by weight.

[0033] The preparation of the secondary coating liquid and the method and operation of coating are the same as those in Example 1 above, so as to make a lens with a secondary coating layer.

Embodiment 3

[0035] 1-time coating solution for making lenses: Take 20% EVA, 80% mixed solvent of MEK and IPA, mix each other, dissolve and make resin solution. Take 96% of the resin solution, add 2% of additives for the uniformity of film formation, and add 2% of polyurethane JISTAT 2000NT with antistatic agent, stir for 24 hours to make a film-adding liquid, soak the surface in this liquid For the lens treated with hair water, take it out and dry it at 50 degrees for 5 minutes. The above percentages are percentages by weight.

[0036] The fluororesin used in the second coating solution was commercially available VISONA from Du Pont Corporation (name of the company), mixed and diluted in MEK at a ratio of 4:1 (MEK: fluororesin = 4:1), and placed in In this solution, soak the lens soaked in the above-mentioned film-coating solution for 2 times, take it out, and dry it for 30 minutes at 60 degrees.

[0037] 《Comparative object 1》The lenses that were not treated with the above-mentioned co...

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Abstract

The invention relates to a lens anti-static protective film coating method. The method comprises the following steps: 1) forming a primary film layer on the surface of a lens: adding synthetic resin adhesive and antistatic agent in a solvent in a ratio to obtain a primary coating solution, soaking the lens in the primary coating solution or spraying the primary coating solution on the surface of the lens and drying to form the primary film layer on the surface of the lens; 2) forming a secondary film layer on the surface of the lens: adding fluororesin in the solvent in a ratio to form a secondary coating solution, and soaking the lens formed in the first stage in the secondary coating solution or spraying the secondary coating solution on the surface of the lens and drying to form the secondary film layer on the surface of the primary film layer. The lens with anti-static protective film prepared by method of the invention has the primary film layer and secondary film layer on the surface.

Description

technical field [0001] The invention relates to a method of adding a two-component lens antistatic protective film and an spectacle lens with an antistatic protective film produced by the method. Background technique [0002] Usually, in the spectacle lens circulation process, in order to protect the spectacle lens surface, paper packaging is used. However, during the long-term circulation of spectacle lenses in this packaging method, physical friction will still occur on the surface of the lenses. Therefore, in addition to packaging with paper packaging, in order to protect the lens, a specific coating solution is applied to the surface to form a protective film on the surface, so that the spectacle lens can be circulated in a state with a protective film. , and then tear off the protective film. [0003] However, this protective film on the surface of the lens has been produced with a highly toxic solvent. Especially if such a film is coated on the surface of the lens w...

Claims

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Application Information

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IPC IPC(8): G02B1/10G02C7/00G02B1/16G02B1/18
Inventor 黄寅哲
Owner CHEMILENS JIAXING