... process requires the use of an injection molding machine, raw plastic material, and a mold. The plastic is melted in ... cycle time of the machine. 2, Injection - The raw plastic material, usually in the form of pellets, is fed into ... impellers, seals Polyetherimide PEI Ultem Heat resistance, flame resistance, transparent (amber color) Electrical components (connectors, boards, switches), covers, sheilds, ...