What is food grade silicone rubber? Just as the name implies, food grade silicone rubber is a kind of silicone rubber can be used with safety in the field of food. It’s most suitable for making molds for food because of its Environmental protection and non-toxic. Food grade silicone rubber is a two-component addition cure silicone materials. It can cure both at room temperature and heated temperature and the curing time can be accelerated by higher temperature.

Food grade silicone rubber is also a kind of inorganic macromolecule colloid material made of silicate polycondensation, its main composition is SiO2 · nH2O which is non-toxic, odorless, chemically stable under normal conditions except caustic alkali and hydrofluoric acid, does not react with any acid salt. Since it is a colloidal structure, it has many pores and a large surface area. Food grade silicone rubber has very strong absorption ability to water; its water quantity can reach more than 80% to 100% of its weight in the case of high humidity. Therefore, food grade silicone rubber can be used as external desiccant for food and medicines. Since food grade silicone rubber is the result of refined edible and sterilization, you can mix it with food and drug according to requirements, and it has no any toxic side effect on human body.

Food grade silicone rubber products can be seen everywhere in our life. It is used to make molds for chocolate, candy, ice cream, biscuits, cake and other food. Food grade silicone rubber also can be used for coffee maker, water heater, toaster, disinfecting cabinet, water dispenser, kettle , iron, rice cooker, frying pot, pulp machine, gas appliance and other mechanical products due to its the characteristics of fire resistance, resistance to high pressure, high temperature resistance and environmental protection. Besides, food grade silicone rubber is suitable for the manufacture of precision molds such as metal crafts, ceramics, alloys and other vehicle. Finally , food grade silicone rubber is also applicable to make molds of epoxy resins, polyester resins, polystyrene, vinyl plastic, wax, concrete stone, plaster casting, culture stone, large cement components, Printing, cloning of human organs, household appliances, lighting products, silica gel ice and baby nipples and so on. 

Characteristics of food grade silicone rubber:

(1) Low shrinkage, the crosslinking process does not release low molecular weight, so the volume is constant; the shrinkage rate is less than 0.1%.

(2) It can be cured depth, without being limited by the thickness of the products.

(3) Food grade silicone (environmental, odorless and nontoxic and through the FDA food grade certification).

(4) It has excellent heat resistance; temperature can reach 300-500 degrees.

(5) High tensile strength, tear strength and reduplication, good fluidity, pourable effort, easy-operation (mixing ratio at 1:1).

(6) High dimensional stability over time, non-deformability and long service life.

(7) High chemical resistance to aggressive components of some types of resins