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Twin-screw extrusion by VJJ

Co-rotating parallel twin-screw extruders manufactured by Kunwei in Chengdu and Jiangsu. Built for compounding where dispersion, filler loading and steady output decide the margin.

Main specifications

Model-by-model data will be added once confirmed by the factory.
Item	Range
Screw diameter	8 – 177 mm
Output	20 – 5,000 kg/h, depending on model and formula
Specific torque	11.3 Nm/cm³ standard series; up to 14 Nm/cm³ high-torque series
Maximum screw speed	900 rpm standard; up to 1,200 rpm
Barrel length	24 – 68 L/D, modular
Maximum process temperature	≥ 450 °C
Electrical components	Siemens, ABB, Schneider
Pelletizing options	Strand, water-ring, underwater, hot-cut
Certification	ISO, CE

What customers run on them

Color and additive masterbatch

High shear for pigment dispersion, fast screw changes between colors.

Filler masterbatch

CaCO₃ and talc at high loading. Torque matters most here: it sets how much filler the line can take at full output.

Engineering plastics

PC, PA, PBT with glass fiber, flame retardants and alloys, with side feeders and vacuum venting.

Recycled plastics

Upgrading washed PE, PP and PET flakes into compounds, with degassing and melt filtration.

Questions about VJJ extruders

Who manufactures VJJ twin-screw extruders?

VJJ is the extruder brand of Kunwei, a twin-screw manufacturer with production in Chengdu and Jiangsu, China. Torqplas supplies VJJ extruders for export, and the contract is signed with the factory.

What output range do VJJ extruders cover?

From about 20 kg/h on laboratory models up to about 5,000 kg/h on production lines, depending on screw diameter, material and formula.

Tell us your material and target output

Send the material type, output in kg/h and final product. We reply within 24 hours with a configuration and price range.