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Silica gel process description

Views: 343 Author: WJM Publish Time: Origin: WJM

Silica gel process description

Silica gel sleeve is a silicone rubber product produced by molding vulcanization processwith silica gel as the main raw material.

Ordinary silicone sleeves need to go through the following processes:

1)   Raw material preparation. 

Including raw rubber mixing, color matching, raw material weight calculation, etc.



2) Vulcanization molding    

High pressure vulcanization equipment is used for high temperature vulcanization, and silica gel raw materials are used for solid molding.



3)  Trimming (self dismantling)    

The silicone sleeve pressed out from the mold will stick some rough edges, which need to be removed manually.


4) Silk screen printing    

This process is only used for some silicone cover products with patterns on the surface of silicone cover, black mobile phone silicone cover. In order to facilitate the user to operate the keys, it is often necessary to screen print the characters corresponding to the mobile phone keyboard at the corresponding position. Or the surface needs to be beautiful and printed with some beautiful patterns.



5) surface treatment  

1. The most surface treatment is to spray hand feeling oil, which can make the mobile phone cover feel good. This is also the simplest surface treatment. Silica gel products are easy to absorb dust in the air under ordinary conditions and have a certain viscosity. Spray a thin layer of hand feeling oil on the surface of the silicone sleeve to prevent dust and ensure hand feeling.



2. Spray with radium carving. After trimming the silicone sleeve, spray a layer of colored ink on the surface of the silicone sleeve, then shoot the pattern with radium, and then spray a layer of hand oil on the surface. This technology is quite popular at present.



3. Glue dropping: drop the pattern made of colored liquid glue on the glue dropping mold, extract the air inside with an evacuation machine (to avoid bubbles), dry the colored liquid glue on the heating table, vulcanize with the external mold at high temperature, and form a solid shape with silica gel raw materials.


4. Color printing, printing any color pattern on the repaired silicone cover. This process can make the silicone cover not only beautiful, but also has a strong three-dimensional feeling. It feels good. It can print patterns on each side of the silicone sleeve, and the patterns are very smooth and natural.



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