Now mold silica gel is more and more widely used in the market, and customers have many choices. They can choose the mold silica gel material suitable for their own products according to different product needs; At present, mold silica gel is mainly divided into two types: one is additive food grade mold silica gel, and the other is condensed industrial grade mold silica gel; Food grade mold silica gel is a silica gel raw material accelerated by Platinum system. It is environment-friendly, non-toxic and tasteless. It can be used as food mold or adult products; Condensation resistant industrial grade silica gel is mainly used for mold turnover of cultural stones, resin crafts and other products. How to distinguish food grade mold silica gel and industrial grade mold silica gel? Here are some practical ways to distinguish between Hongtu silica gel:

1. Smell: at present, there are two kinds of mold silica gel in the industry, plus molded food grade silica gel and condensed industrial silica gel. Plus molded silica gel is non-toxic and tasteless; Condensed silica gel, also known as industrial silica gel, is environmentally friendly, odorous and toxic. Food mold silica gel is an additive environmental protection grade silica gel, which is non-toxic and tasteless. Therefore, we can identify it by smelling. What smells must not be food grade.

2. Look at the mixing ratio: the mixing ratio of food grade mold silica gel is 1:1 or 10:1, while the mixing ratio of industrial grade silica gel is 100:2 or 100:4.

3. Touch and feel: the toughness and elasticity of food mold silica gel are very good. It is not easy to permanently deform due to external force, and the feel will be relatively smooth. However, industrial silica gel products are easy to deform and feel rough.