Counter-rotating twin-screw extruders are widely used in extrusion molding and batch granulation.
Tightly meshing counter-rotating twin-screw extruder for PVC profile extrusion
The shear rate is limited to [γ] = 6 to 8S-1. The maximum linear speed of the screw
V=7～8m/min for the maximum linear speed of the screw when it is extruded from PVC pipe
V = 10 to 12 m/min. Therefore, it is often operated at a lower speed.
Meshing co-rotating twin-screw extruder, widely used in polymers
Modification: blending, filling and fiber reinforcement, compounding or mixing. also may
Used for extrusion of shaped articles, but rarely used to process profile products.
The allowable shear rate is around [γ] = 60 to 140 S-1.
The screw line speed V=30～50m/min,
The maximum V = 160m / min.
High-speed meshing co-rotating twin-screw extruders are commonly used for materials
The compounding and extrusion and venting operations as a continuous chemical reaction.
This type of squeeze
The speed of the output is in the range of 300 to 600 r/min.
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