Injection molded liquid silicone rubber (LSR) is a kind of additive liquid silicone rubber. It takes advantage of its low viscosity (it has certain fluidity and unshapedness before vulcanization) and is easy to use metering mixing equipment for feeding. It uses special injection molding equipment to accurately and automatically feed, mix, and inject two components, and then quickly vulcanize to form products.

The injection molding process has gradually replaced the traditional molding process, with many advantages:
1. Liquid injection molding process is adopted for vulcanization molding, with accurate measurement and less material waste;
2. The curing temperature is low, the molding product cycle is short, and the production cost is reduced;
3. The products have high precision and can process products with complex shapes; There is no by-product in the vulcanization process, and there is no need for two-stage vulcanization;
4. The products have excellent aging resistance, weather resistance, non-toxic, high transparency, high mechanical strength, good elasticity and other characteristics.

Therefore, liquid injection molding silicone rubber has become the preferred material in the fields of daily rubber products, such as baby products, daily products, power insulation materials processing, kitchen accessories manufacturing, and is one of the fastest growing silicone rubber products.

Introduction to Injection Molding Process
The injection molding process of liquid silicone rubber is as follows: two kinds of liquid silicone rubber raw materials, A and B, are delivered to the mixing device after accurate measurement by the metering device; The two components are fully mixed in the mixer and then transported to the injection molding machine; Inject or spray into the preheated multi mold through the molding machine and evenly distribute to each mold cavity; The silicone rubber material is heated in the hot mold cavity and the product is rapidly vulcanized; Automatic mold opening and ejection after vulcanization molding; Then close the mold and enter the next molding cycle. The whole molding cycle lasts from tens of seconds to several minutes, and the molding cycle varies according to the size of the product.

The whole injection molding system is divided into the following parts: the first unit is the metering feeding unit, which accurately measures the two components of liquid silicone rubber directly from the packaging barrel into the system through the hydraulic pressure plate; The second unit is a mixing unit. The two components entering the system are fully and evenly mixed through a static mixer, and no bubbles are brought into the system; The third unit is the injection molding unit. The mixed silicone rubber material is injected into the mold quantitatively through the injection unit, distributed evenly to each mold cavity, and then thermal vulcanized. The whole process is fully automatic, and no manual control can be realized after setting parameters, so as to improve production efficiency.

For Injection molded liquid silicone rubber, please check the following details:
http://www.rtvsilicone.net/product-food-grade-high-biting-force-addition-liquid-silicone-rubber-iota-m4260k-.html