Injection molding liquid silicone rubber (LSR) is a kind of molding liquid silicone rubber, it uses its own low viscosity (before vulcanization has a certain fluidity, amorphous), easy to use metering mixing equipment feed characteristics, the use of special injection molding equipment to accurately feed the two components, mixing, injection mold, and then rapid vulcanization, molding products. Injection molding process has gradually replaced the traditional molding process, with many advantages: vulcanization by liquid injection molding process, accurate measurement, less material waste; Low vulcanization temperature, short molding cycle, reduce production costs; High precision products, can process complex shape products; There is no by-product in the vulcanization process and no two-stage vulcanization is required. Products have excellent aging resistance, weather resistance, non-toxicity, high transparency, high mechanical strength, good elasticity and other characteristics [1-2]. 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, kitchenware accessories manufacturing, etc., and is one of the fastest growing products in silicone rubber.


Liquid silicone rubber injection molding technology (LIM) is a new and efficient silicone rubber molding method developed in the late 1970s. It is a new silicone rubber molding processing technology formed by combining liquid silicone rubber with equipment that can accurately and stably complete injection molding. Only two components (can also include auxiliary components such as color matching) into the device, from feeding, metering, mixing to forming automatic completion. This processing technology can achieve the purpose of simplifying the process, shortening the processing time, saving materials and improving efficiency. And there is basically no waste edge in the production process, which is conducive to environmental protection.


With the wide application of liquid silicone rubber and the improvement of product requirements, more and more people have recognized and adopted this technology to produce silicone rubber products, ushering in a new era of high efficiency, high quality and low cost production in the silicone rubber processing industry. With the continuous expansion of the application range of injection molding technology, it is expected to have greater competitiveness in replacing traditional elastomer products.