Tandem Foaming Extruder having Improved Throughput Rate
AssigneeMyung-Il Foam Tec Co., Ltd.
InventorKyoo-Ik NOH
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Abstract
Disclosed herein is a tandem foaming extruder having an improved throughput rate. The tandem foaming extruder can reduce frictional force against the resin melt and control pressure drop in the cross pipe by forming the low friction coating layer with constant thickness on the inner surface of the cross pipe, which connects the first extruder and the second extruder with each other, thereby increasing the throughput rate per unit time by 10% to 40% compared with conventional tandem foaming extruders for thermosoftening plastics like polystyrene or Nylon resin.
Claims5
A tandem foaming extruder, which includes a first extruder, a second extruder, and a cross pipe connecting the first extruder and the second extruder with each other in series,
- wherein a low friction coating layer with constant thickness is formed on the inner surface of the cross pipe.
Dependencies are inferred from the claim text.