WPC.Asia - professional manufacturer of advanced wood-plastic composite (WPC) machinery in China

PE wood composite (WPC) pelletizing line

Equipment type: 

PE wood composite (WPC) pelletizing line is based on modern co-rotating parallel twin-screw extruder specially designed for making WPC resin in the form of pellets (granules) using a multi-strand hot-face die-head and cutting device.

Alternatively an online WPC crusher can be used to granulate WPC by crushing solid melt aggregates and maximize the capacity.

WPC pelletizer features and advantages

  • Pelletizer is specially designed for compounding and extruding PE wood composite followed by pelletization. Wood content in the composition can reach up to 70%. Moisture and volatiles are exhausted naturally through venting slots in the barrel.
  • Co-rotating parallel screws ensure the most consistent mixing and plastication of WPC.
  • The barrel and screws are made of corrosion and wear-resistant steels with nitriding and bimetallic treatment. The structure of the both is modular so elements can be changed independently upong wear without changing the whole screw or barrel.

WPC pelletizing process in brief

WPC blend made with upstream high-speed mixer is fed into pelletizing extruder. The blend is mixed and melted in the barrel followed by the melt being forwarded along the barrel to and pushed through the hot-face die-head. The strands are cut into WPC pellets which then blown by air to pass through pipelines and downstream hoppers for cooling and discharge.

Alternative way of granulation omits pelletizing die-head with solid melt aggregates being sent pneumatically to the online crusher and crushed into granules.

General technical data

Base model WA-PPE75/40-110 WA-PPE95/40-250

Screw diameter

75/40

95/40

Main motor power

90/110 kw

250 kw

Finished product output

300-500 kg/h
(depends on pelletizer model, pelletizing method as well as other factors (formulation, extrusion regime, raw material condition etc.)

600-800 kg/h
(depends on pelletizer model, pelletizing method as well as other factors (formulation, extrusion regime, raw material condition etc.)

Raw material

WPC blend (polymer+wood powder+additives) obtained with upstream mixer or components can be dosed separately (in case of online automatic dosing system)

WPC blend (polymer+wood powder+additives) obtained with upstream mixer or components can be dosed separately (in case of online automatic dosing system)

Finished product

WPC pellets (8-10mm) depending on die-head screen. Or crushed WPC granules (<10mm).

WPC pellets (8-10mm) depending on die-head screen. Or crushed WPC granules (<10mm)

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