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Polyurethane lens forming adhesive tape and preparation method thereof

A polyurethane and lens technology, applied in adhesives, film/sheet release coatings, film/sheet adhesives, etc., can solve problems such as bubbles in polyurethane lenses, achieve the effect of solving bubbles and meeting process temperature requirements

Active Publication Date: 2021-07-23
田永军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of polyurethane lens forming adhesive tape and its preparation method for the defect existing in the prior art, and this adhesive tape has improved polyurethane lens monomer polymerization The permeation of carbon dioxide generated during the process solves the problem of air bubbles at the edge of polyurethane lenses, and the tape can meet the process temperature requirements of polyurethane lens monomer polymerization and silicone pressure-sensitive adhesive coating

Method used

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  • Polyurethane lens forming adhesive tape and preparation method thereof
  • Polyurethane lens forming adhesive tape and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0057] The polypropylene film layer selected in this embodiment is a single-layer polypropylene film, and the thickness of the single-layer polypropylene film is 0.05 mm. Specific steps are as follows:

[0058] 1. Prepare the release agent solution, the release agent is preferably alkyl urethane modified polyvinyl alcohol, dissolve the powdered alkyl urethane modified polyvinyl alcohol with ethyl acetate or toluene, and prepare a mass concentration of 5 %-20% release agent solution.

[0059] 2. Use an anilox roller or dimple coating roller to coat the release agent solution on the surface of the single-layer polypropylene film with a coating thickness of 1 micron. Send the single-layer polypropylene film coated with the release agent solution into the drying tunnel, and dry it for 30 seconds at 130°C. The standard for judging the drying is that the surface is smooth and free of mucus.

[0060] 3. Under normal temperature conditions, put the single-layer polypropylene film co...

Embodiment 2

[0071] The polypropylene film layer selected in this embodiment is a double-layer polypropylene composite film, which is composed of two single-layer polypropylene films, wherein the thickness of the single-layer polypropylene film is 0.05 mm. Specific steps are as follows:

[0072] 1. Prepare the release agent solution, the release agent is preferably alkyl urethane modified polyvinyl alcohol, dissolve the powdered alkyl urethane modified polyvinyl alcohol with ethyl acetate or toluene, and prepare a mass concentration of 5 %-20% release agent solution.

[0073] 2. Coat the release agent solution on the surface of the single-layer polypropylene film with an anilox roll or dimple coating roll, and the coating thickness is 0.5 microns. Send the single-layer polypropylene film coated with the release agent solution into the drying tunnel, and dry it for 30 seconds at 130°C. The standard for judging the drying is that the surface is smooth and free of mucus.

[0074] 3. Put the...

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Abstract

The embodiment of the invention relates to a polyurethane lens forming adhesive tape and a preparation method thereof. The polyurethane lens forming adhesive tape comprises a polypropylene film layer, a release agent layer, a hardened layer, an organic silicon pressure-sensitive adhesive bottom adhesive layer and an organic silicon pressure-sensitive adhesive surface adhesive layer, wherein the release agent layer is arranged on one side of the polypropylene film layer, the hardened layer is arranged on the other side of the polypropylene film layer, the organic silicon pressure-sensitive adhesive bottom adhesive layer is arranged on the hardened layer, and the organic silicon pressure-sensitive adhesive surface adhesive layer is arranged on the organic silicon pressure-sensitive adhesive bottom adhesive layer. According to the polyurethane lens forming adhesive tape, the permeation amount of carbon dioxide generated in the polymerization process of a polyurethane lens monomer is increased, and the problem that bubbles exist on the edge of a polyurethane lens is solved.

Description

technical field [0001] The invention relates to the technical field of tapes, in particular to a polyurethane lens forming tape and a preparation method thereof. Background technique [0002] Traditional medium and low refractive index lenses are thicker, the center thickness is generally more than 2.5mm, and the edge thickness is more than 4mm. Long-term wearing of medium and low refractive index lenses has certain effects on the development of the orbit and nose bridge of school-age adolescents. High-refractive-index lenses, represented by polyurethane monomers, are welcomed by myopia patients due to their thinness, wear resistance, and strong impact resistance, and the popularity of high-refractive-index lenses is also increasing. [0003] However, the polyurethane lens monomer has high temperature requirements during the polymerization process, and the maximum polymerization temperature needs to be above 130°C, and carbon dioxide gas will be generated at the same time. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/24C09J7/29C09J7/20C09J7/50
CPCC09J7/243C09J7/29C09J7/201C09J7/50C09J2423/106C09J2433/003C09J2429/005C09J2483/00
Inventor 田永军
Owner 田永军
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