In the processing of silica gel products, the most troublesome process is to remove the edge, especially the products produced by the molding process, remove the edge to make people crazy. So what are the causes of rough edges?
1. The curing temperature is too high or the curing time is too long
Silica gel products in the molding process, once the temperature is too high or vulcanization time is too long, it will cause the product molding after numbness or brittle, whether numb or brittle, will have a great impact on the side.
2. The curing temperature is too low and the curing time is too short
Silica gel products are not completely vulcanized when the elasticity is strong, so it is not easy to separate the raw edge and the product when removing the edge, so it is generally necessary to use scissors to repair the edge.
3. Mould self-disassembly design is unreasonable, processing quality is not up to standard or mould wear time is too long
In the design of the mold, the mold design is not reasonable, manufacturing the mold since the opening is not sharp, resulting in the product is difficult to remove the edge after forming. In addition, silicone products mold wear or sandblasting times too much will also affect its self-disassembly performance.
4. The forming thickness is too large
In the molding process as long as the size meets the requirements, try to do thin, ruler, accurate material.
5. Silica gel raw material problem
There is a problem with the rubber link, the quality of the rubber material is poor, there is a lack of tearing strength, poor toughness, and easy to fracture when forming.
