Silica gel mold is made of silica gel as raw material. No matter what kind of silica gel mold is, it has a little shrinkage. The degree of exponential shrinkage is different. Shrinkage has little impact on the products that are not very precise. After all, the degree of shrinkage is very small.
Silica gel molds include molds made of industrial grade silica gel and molds made of food grade silica gel. The degree of shrinkage varies according to their types. Industrial grade silica gel is a condensation type silica gel, with the shrinkage rate less than 0.2%. The characteristics of condensation type silica gel depend on the degree of vulcanization and the additives used. Food grade silica gel is an additive silica gel with a shrinkage rate of less than 0.1%. Food grade silica gel is a safe and healthy silica gel, mainly used in tableware applications. Its structure is stable, and it is an inorganic polymer material formed by the condensation of silicic acid. Generally speaking, silica gel mold shrinkage has little impact, unless some large molds have some impact, but it can be avoided with normal maintenance.

matters needing attention:
1. Silica gel molds should be stored in a dry environment, because silica gel is a highly adsorptive material.
2. During demoulding, the mold should be completely solidified before being removed, otherwise, the silicone mold will be deformed and shrunk.
3. When using, you should read the instructions and make the mold according to the manufacturer's instructions. The silicone mold is prepared according to the manufacturer.
4. The larger the silica gel mold is, the easier it is to shrink. You should be careful when using it.
5. Use gauze to prevent mold deformation and shrinkage.
6. After using the silicone mold, it needs to be cleaned in time.

Some silica gel molds are used in special environments. Shrinkage is a normal phenomenon when they are used for a long time. With the progress of technology, many silica gel molds now have good anti shrinkage characteristics. It is recommended that you choose manufacturers to purchase silica gel molds to ensure the quality assurance of batch purchase of silica gel molds.