Recently, it has been actively developing in the following two directions:

(1) Fully automatic molding: no flash, no runner, automatic molding

Regarding the fully automated molding process, people have conducted research on various aspects such as injection machines, molds, and materials. It not only saves manpower in the process operation, but also reduces the cost of materials because it does not produce useless cured products, and it is also attracting attention from the perspective of environmental protection. For the molding of miniature silicone products like skeleton oil seals for automobiles, the molding cycle (from injection to the subsequent injection) is required to be within 10s, which can be completed quickly.

(2) Composite molding: Insert molding, binary molding

Because the form of crosslinking reaction is an addition curing, it can be molded at a relatively low temperature. Since no by-products such as peroxide decomposition residues are generated during the crosslinking reaction, there is no need for secondary vulcanization in principle. Therefore, it is possible to perform integral molding with resin, insert molding by applying primer material, and dual molding that integrates the sealing part and the skeleton part has also begun to spread.

Silicone rubber products have excellent properties (heat resistance, plug resistance, weather resistance, electrical insulation, flame retardancy, etc.). Due to these properties, it is possible to make environmentally friendly molding based on fully automatic molding, integral molding with metals and organic resins; the material itself is transparent and colorable, so its application range involves many fields, such as (computers, mobile phones, etc.), etc.) silicone buttons, silicone pacifiers, (copiers, printers, etc.) rubber rollers, pipe joint seals, oil seals and other automotive silicone sealing accessories, TV picture tube anode caps, diving supplies, etc.

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