Compression Moldings

CM is the most common method of forming TS plastics. Until the advent of injection molding, it was the most important of plastic processes. CM is the compressing of a material into a desired shape by application of heat and pressure to the material in a mold cavity. Pressure is usually at 7 to 14 MPa (1000 to 2000 psi). Some TSs may require pressures down to 345 kPa (50 psi) or even just contact (zero pressure). The majority of TS compounds are heated to about 150 to 200°C (302 to 392°F) for optimum cure; but can go as high as 650°C (1200°F).

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