Process for reducing loss of glass mold used for thermoplastic resin lenses

Abstract

The invention relates to a process for reducing loss of a glass mold used for thermoplastic resin lenses. The process comprises the following steps of: (1) weighing UV (ultraviolet) powder, rising the temperature for dissolving, namely rising the temperature on a heating magnetic stirring apparatus for dissolving; (2) mixing for stirring, namely adding dissolved UV powder to a monomer for mixing and stirring; (3) rising the temperature, adding IPP (isopropyl palmitate), and stirring for 45 minutes at constant temperature; (4) reducing the temperature and filtering, namely filtering after reducing the temperature to 28 DEG C; and (5) vacuumizing and filling. Raw materials are pre-cured by rising the temperature when ingredients are stirred to reduce the contractibility rate of follow-up curing to obviously reduce the breakage of the glass mold so as to generate better economic benefits. With the adoption of the process, the breakage rate of the glass mold can be reduced to 0.2%, and the production cost can be greatly reduced. The process is simple in operation. With the adoption of the process, the breakage rate of the glass mold is reduced, the production cost is reduced, and the production quality is improved.

Description

Technical field [0001] The present invention relates to the field of resin lenses, in particular to a method for reducing the loss of glass molds for thermal resin lenses. Background technique [0002] The traditional resin lens batching process is to mix and stir the raw and auxiliary materials except the UV powder at room temperature. The UV powder is heated up (about 65°C) to dissolve fully and then added to the batching tank. After a certain period of time, vacuum, filter, and fill In this production method, the breakage rate of glass molds is generally 0.8-1.5%, and the cost is very high, especially for some special molds. Therefore, technicians are eager to reduce this loss rate. Summary of the invention [0003] In order to solve the above-mentioned problems, the present invention provides a process for reducing the loss of a peeling mold for a thermal resin lens. The method is simple to operate. The temperature is raised when the ingredients are stirred, so tha...

AI Technical Summary

Problems solved by technology

[0002] The traditional resin lens batching process is to mix and stir the raw and auxiliary materials except UV powder at room temperature. The UV powder is heated up separately (about 65°C) and fully dissolved and then added to the batching barrel. After a certain period of time, vacuumize, filter, and fill. , the breakage rate of glass molds under such a production method is generally 0.8-1.5%, and the cost is very high, especially the price of some special molds is very high, so technicians urgently need to reduce this loss rate

Images