The WPC (Wood Plastic Composite) Extruder Machine combines plastic and wood fibers to produce environmentally friendly WPC profiles. These profiles are widely used in decking, fencing, and interior applications. Our WPC extruders ensure high output and quality with low energy consumption. For further details, visit our Plastic Granule Making Machine category to see how we support sustainable production.
WPC Extruder Machine combines thermoplastic resins such as PVC, PP, and PE with plant fibers such as wood flour (60–80 mesh), rice husks, and bamboo powder. Through a series of processes, including high-speed mixing, pelletization (or one-step direct extrusion), vacuum shaping, online embossing/laminating, and precision traction cutting, it continuously produces environmentally friendly profiles that combine the appearance of wood with the performance of plastic. Depending on the resin matrix and the end product, mainstream models can be divided into the following three categories:
1. Interior Waterproof WPC Door Frame & Wall Panel Profile Making Machine
Applicable formula: PVC 50–60% + wood flour 25–30% + CaCO₃ 10–15% + stabilizer/lubricant/foaming agent 3–5%
Product Specifications:
Door frame: Width 50–120 mm, thickness 20–45 mm, multi-cavity hollow structure
Wall panel: Width 300–600 mm, thickness 8–12 mm, hollow micro-foam density 0.5–0.7 g/cm³
Core Configuration:
SJZ65/132 or SJZ80/156 cone dual-core machine, output 150–350 kg/h
High-pressure mixer (500/1000 L) automatically measures wood flour moisture content ≤2 % to prevent blackening and degradation.
Co-extrusion die head (Silica or foamed skin) + 12–18 m vacuum calibrating table, crawler traction speed 0.8–3 m/min.
Inline thermal transfer printing/UV coating/transparent PET high-gloss lamination for a single-step decorative finish.
Technical Highlights:
24-hour water absorption expansion rate ≤0.3%, nail holding force ≥1200 N, formaldehyde emission level E0; 40 cross-section options available with a 15-minute mandrel change.
Applications: Indoor waterproof door frames, skirtings, cornices, quick-install wall panels, wardrobe top moldings.
2. PVC WPC Wood Plastic Hollow Door Making Machine
Applicable formula: PVC 45% + wood flour 30% + foaming agent 1% + CaCO₃ 20%, target density 0.35–0.55 g/cm³
Product specifications: Door core panel width 600–1050 mm, thickness 20–45 mm, seven-cell/nine-cell honeycomb structure
Core configuration:
SJZ80/156 cone twin main machine with 110 kW variable frequency motor, output 250–400 kg/h
Supercritical CO₂ foaming injection system, melt temperature 165–175°C, expansion ratio 1.5–2x
20 m vacuum forming table + 8 pairs of crawler tracks, total traction force 60 t, ensuring large panels do not warp.
Dust-free fixed-length cutting (servo flying saw) + automatic panel turning table, panel length tolerance ±0.5 mm.
Technical Highlights:
Panel flatness ≤0.2 mm/m, 48-hour water absorption ≤0.5%; online milling of pre-embedded wood planks allows for door lock and hinge installation.
Applications: Interior doors, bathroom doors, cabinet doors, partitions, exhibition booths
3. WPC PE Decking Floor & Louver Wall Panel Production Line
(PE-based outdoor WPC flooring/louver wall panel production line)
Applicable formulation: HDPE/PP 30–35% + wood flour/rice husk flour 55–60% + compatibilizer 3% + UV/antioxidant/color masterbatch 2%
Product Specifications:
Flooring: Width 100–200 mm, Thickness 20–40 mm, Hollow/Solid Co-extruded Shell, Surface 3D Wood Grain
Louver Wall Panel: Width 150–250 mm, Thickness 8–15 mm, Single- or Double-sided Co-extruded ASA Color Shell
Core Configuration:
SJ75/40 or SJ90/40 high-efficiency single-screw extruder (L/D 40), equipped with a forced feeder and melt pump, Output 200–450 kg/h
Two-step process: First, pelletizing (wood flour moisture content ≤1%). %), followed by extrusion; direct compounding and extrusion can also be performed in a single step.
Coextrusion die head (Seluka structure) + 6–10 m vacuum calibrating table, crawler traction speed 0.6–2.5 m/min
Inline embossing (3D wood grain depth 0.3–0.8 mm) + water tank cooling + fully automatic cut-to-length cutting + automatic palletizing
Technical Highlights:
Coextruded ASA shell thickness 0.3–0.5 mm, color difference ΔE ≤ 0.8; UV resistance 2000 h, Gray Card Class 4;
Simultaneous switching for flooring, fences, columns, and blinds; die change in 30 minutes.
Applications: Outdoor terraces, pool decks, park boardwalks, facade blinds, fence columns, and dock decking。
WPC extruder machines are being upgraded with features such as high wood powder filling (≥70%), supercritical foaming, in-line deep-embossed 3D wood grain, co-extruded ASA/PET weather-resistant shells, and AI closed-loop thickness control.
The PVC-based interior line emphasizes waterproofing, zero formaldehyde, and simultaneous nail-holding and decorative features.
The PVC hollow-core door line highlights supercritical foaming for a 30% weight reduction and wide-area flatness.
The PE/PP outdoor line emphasizes high weather resistance, creep resistance, realistic deep-embossed wood grain, and fast switching between multiple specifications.
When selecting a model, users should consider the wood powder moisture content, target density, product width, whether to co-extrude the shell, downstream secondary processing requirements such as embossing/sanding/grooving, and environmentally friendly recycling requirements. The optimal balance between production capacity, cost, and performance should be achieved by optimally matching the compounding and pelletizing system, screw compression ratio, calibrating table length, and traction.
