What Is Silicone Release Agent for Rubber Molding?
Silicone Release Agent for rubber Molding is a dedicated processing auxiliary developed to solve sticking issues between rubber compound and mould surface. It is made of silicone active substance and carrier system. It has stable performance under mould heating condition.
It satisfies release requirements of different rubber vulcanization processes. It provides excellent release effect and high heat resistance. It will not create adverse chemical reaction with rubber raw materials. It will not contaminate rubber surface or reduce rubber bonding strength for subsequent gluing. It is widely used in rubber molded parts production.
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Main application scenarios of silicone release agent for rubber molding
Silicone release agent for rubber molding applies to: silicone rubber, natural rubber, EPDM, nitrile rubber, rubber seal production, rubber hose molding, rubber roller vulcanization, compression molding and injection molding of rubber products.
Two important rubber processing stages: pre-mold coating stage and vulcanization forming stage.
At pre-mold coating stage, the release agent is sprayed or brushed evenly on mould cavity. It forms thin isolation film before rubber feeding. It prevents hot rubber compound from adhering to metal mould and makes demolding smooth, reduces tearing and surface defects of rubber parts.
At vulcanization forming stage, mould temperature rises and rubber cross-links to form finished parts. The silicone isolation layer maintains stable under high temperature. It keeps continuous release performance during repeated production cycles, improves production speed and reduces reject rate.
Key features of silicone release agent for rubber molding
Good film-forming ability, uniform coverage on metal mould surface
Heat resistant for rubber vulcanization temperature range
Excellent release performance, low transfer to rubber surface
Low dosage, will not interfere rubber vulcanization curing
Suitable for repeated moulding cycles
Easy cleaning of mould after production
If you need rubber molding silicone release agent samples or mould process advice, reach out to our technical team for matching grades.
