Wood Plastic Composites (WPC) Compounding
Complete lines from premixing to profile or sheet for PP, PE and PVC with up to 65% wood fibre. The wood goes in after the polymer has melted, so the fibre keeps its length and the compound keeps a natural wood colour.
- PP / PE WPC pellets
- PP + wood sheet, direct
- PVC WPC powder
Up to 65% wood in PP, PE or PVC
The wood fibre is the main ingredient by weight. Colour masterbatch and additives complete the formula.
- PP / PE / PVC
- Wood fibreup to 65%
- Colour masterbatch
- Additives
Melt the polymer first, then add the wood
PP and HDPE need more heat to melt than wood fibre can take. Feeding the wood downstream, into a melt that is already formed, lets the rest of the barrel run cooler and gentler.
Wood after the melt
The wood fibre, premixed with additives, enters through a side force feeder once the polymer is molten.
Mixing without cutting the fibre
The screw avoids over-shearing but still mixes well, without reducing the length of the fibre.
Gear pump and lubricant
For the low fluidity of wood-filled melt, a special gear pump and an inner lubricant are used on our sheet lines.
Pellets, sheet or powder
What leaves the extruder depends on the polymer and on the next process.
Projects · Latvia
Two wood plastic lines in Latvia
A tandem line for wood plastic compounding, and a twin screw line that compounds PP with 40% wood fibre and extrudes it straight into sheet.
- Market
- Latvia
- Lines
- 2
- Output
- 700 + 600 kg/h
- Extruders
- SAT75-TDD200 / SAT95
700 kg/h wood plastic compounding line in Latvia · SAT75-TDD200 600 kg/h PP wood fibre sheet extrusion line · SAT95 Lab20 extruder for PE/PP with jute fibre powder · 10–20 kg/h
The 700 kg/h WPC line we built in Latvia
SolutionWPC sheet production line SolutionGrafting compounding: MAH-grafted PP coupling agent SolutionPVC compounding
Get a quote
Tell us the polymer, the wood fibre content and its form, the product — profile, sheet or decking — and the output you need. We will propose the side feeding, screw design and whether you need pellets, direct sheet or PVC powder.
- 01Polymer, wood % & product
- 02Side feeding & screw design
- 03Pellets, sheet or powder
Souder Chen
Head of Compounding Division
With USEON since 2008. Twin screw compounding, devolatilization and recycling lines.