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Rubber Transfer Molding and Bonding

Rubber Transfer Molding

Transfer molding of rubber, a process similar to injection molding without expensive molds, is suited for handling silicones, fluorosilicones, nitrile, neoprene, EPDM, Viton and Buna materials. Tolerances within 0.003" or less are possible in rubber molding. Size capabilities are up to 36" x 36". Hydraulic presses rated to 100 tons are used along with blenders, choppers, other presses and clicker presses for gaskets to process these materials.

Bonding is a process in which uncured rubber is bonded to prepare metal inserts. All metals can be bonded, including beryllium and copper.

Parts manufactured through these processes are used in medical, aerospace, instrumentation, automotive, aircraft and electronic applications.

Parts can be produced in various colors, durometers and textures from the following materials: Silicone, Flourosilicone, Viton, EPDM, Neoprene, Butyl, Isoprene, Buna-N/Nitrile, Natural Rubber, SBR, Millable Urethanes, AFLAS, and others. Many materials can be compounded to be Self-lubricating for ease of installation or to reduce drag in dynamic applications. Also available are conductive materials for applications such as EMI/RFI shielding and keyboard/keypad devices.

Some typical homogeneous parts include Seals, Bellows, Vacuum Suction Cups, Strain Relief's, Grommets, Duckbill and Umbrella Valves, Bushings, Boots, Diaphragms, Connector insulators, Interfacial seals, and Die-Cut gaskets (with or without pressure sensitive adhesives). Typical Rubber to Metal and Rubber to Plastic vulcanized components include Rollers, Vibration and Shock mounts, Valve Poppets and Seal Assemblies, and could include "Value Added" secondary operations including close tolerance finish Grinding, Anodizing, Plating and Powder Coating.

Additional "Value Added" services are available such as Screen Printing, Polymer Coating, Testing, Special Packaging, Bar Coding, Pressure Sensitive Adhesives, Mold Texturing and/or engraving, including Complete Sub-Assemblies and more.

The seasoned shop makes available a technical staff capable of providing design, planning, engineering, fabrication, quality assurance and compound development. The quality methods should be based on continuous improvement.

Capabilities should include "front-end" involvement of staff that can handle everything from developing a prototype to limited production to full production of components from single cavity to multiple cavities or any other process change or new design.

Viton is a registered trademark of DuPont Dow Elastomers.

This technical information has been contributed by
Century Rubber Company

Click on Company Name for a Detailed Profile

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