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Ram Extruders

√ Ram Extruder is discontinuous Process
√ It uses a ram or piston operating in a cylinder
√ The material is a softened by thermal energy from the outside heaters
√ After softening the material is forced out by the ram movement.  After that ram retracted,  the cycle is repeated.

              < ADVANTAGES >
√ There are no violent agitation of the material.
√ Simple process control.
√ Material that can not under go shearing can be processed.
√ Material having high viscosity ( PTFE, UHMHDPE ) can be processed.
√ Power consumption is low.

              < DISADVANTAGES  >
√ Large temperature gradient between the ram cylinder wall and the interior of the plastic bed.
The gradient may lead to degradation of the surface layer to the resin.
√ Low throughput
√ Discontinuous process.

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