Silicone molds are made of silica gel. No matter what kind of silicone molds will shrink, the degree of index shrinkage is different. Shrinkage has little effect on products that are not very precise. After all, the degree of shrinkage is very small. .
There are molds made of industrial grade silicone and molds made of food grade silicone. According to their types, the degree of shrinkage is also different. Industrial-grade silica gel is a condensation-type silica gel, and the shrinkage rate is 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 a kind of addition type silica gel, the shrinkage rate is less than 0.1%, food grade silica gel is a kind of safe and healthy silica gel, mainly used in the application of tableware, its structure is stable, it is a kind of inorganic Polymer Materials. Generally speaking, the impact of shrinkage of silicone molds is very small, unless some large molds will have some impact, but if the normal maintenance is good, shrinkage can be avoided.
Precautions
1. Silica gel molds should be stored in a dry environment, because silica gel is a highly absorbent material.
2. When demoulding, the mold should be completely cured before taking it out, otherwise it will cause deformation and shrinkage of the silicone mold.
3. When using, you should read the instructions, and make the mold according to the manufacturer's instructions. The silicone mold is formulated according to the manufacturer.
4. The bigger the silicone mold is, the easier it is to shrink, so you should be careful when using it.
5. You can use gauze to prevent the mold from deforming and shrinking.
6. After using the silicone mold, it needs to be cleaned in time.
Some silicone molds are used in a special environment. It is normal for the mold to shrink after long-term use. With the advancement of technology, many silicone molds now have good anti-shrinkage characteristics. It is recommended that you choose manufacturer customization when choosing to buy silicone molds. Buying can ensure the quality assurance of bulk purchase of silicone molds.
