Rubber Molding - The Most Parts for the Least Cost
Close tolerance components from O-rings to complex shapes can be produced by compression, transfer, injection molding and liquid injection molding. These methods use silicone and organic rubbers to generate prototypes or production quantities.
Compression and transfer molding methods process silicone, fluorosilicone, ethylene-propylene, neoprene, Buna-N and Viton using platens from 12" x 12" to 34" x 34".
Silicones, thermoplastic rubbers (TPRs), Santoprene and Kraton compounds are processed by injection molding. Average press ratings are from 25 to 75 tons, but units rated up to 250 tons are available. The liquid injection molding process uses separate purging and mixing systems. The liquid compounds set and cure quickly.
Designed to produce the most parts for the least cost, these systems yield economic benefits. The transfer and compression methods allow more mold cavities, and therefore more pieces/cycle on parts such as 1/4" washers. Part removal from injection molds has been mentioned as a concern in production activities. Consequently, the selection of materials and processes turns on the relationship between those choices and the number of parts manufactured per shift.
Capabilities to provide chemical and mechanical engineering support, material selection assistance, the meeting of military specifications and ensuring a clean production environment are essential to the full-service rubber molding company.
To serve a customer base comprised of medical, electronic, aerospace, military and automotive, the rubber component shop needs to utilize Statistical Process control (SPC) and formal inspections.
Viton is a registered trademark of DuPont Dow Elastomers.
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