Kangju Machine specializes in manufacturing high-quality plastic extrusion equipments. Including plastic pipe extrusion line, plastic sheet production line, plastic profile extrusion line, plastic plate extrusion line.
Kangju Machine specializes in manufacturing high-quality plastic extrusion equipments. Including plastic pipe extrusion line, plastic sheet production line, plastic profile extrusion line, plastic plate extrusion line.
PE PP wood plastic profile extrusion line is mainly used for the extrusion of multi-hole threading tubes (four holes, six holes, seven holes, nine holes, etc.) such as PVC door and window profiles, door panels, wall panel, window panels, ceiling panel, etc.
PE PP wood plastic profile extrusion line is a specialized manufacturing system that mixes wood fiber (sawdust, rice husks) with recycled or virgin PE/PP plastics and chemical additives to create durable, water-resistant profiles like decking, fencing, and wall cladding. For different sectional surfaceand molds, different specifcations oftwin parallel (conical)screws extruder can bechosen together with corresponding vacuum calibrating table, haul-off unit, cuttingunit, tilter, etc.
1. Prepare ingredients and mix.
2. Put the uniformly mixed materials into the hopper of the extruder through the automatic screw feeder.
3. After the material put into the hopper of the extruder is melted and plasticized by the extruder, it is squeezed into the vacuum shaping device through the die head.
4. The material extruded through the extruder die is sent to the vacuum shaping device, cooled and shaped by circulating cooling water.
5. The cooled special-shaped wood-plastic panels are pulled out by the tractor and sent to the cutting machine.
| Extruder model | Extrude output | Main motor power | Screw speed | Cooling outside the barrel | Screw material | Barrel material |
| SJZS 51/105 | 100-150kg/hour | 18.5kw; AC motor | 38.4 rpm | 400w × 3 wind cooling fan | 38CrMoALA and through high temperature nitriding treatment. Nitriding depth: 0.5-0.6 Hardness (HV): 740-940 Surface roughness ≤ 0.8um | 38CrMoALA and through high temperature nitriding treatment. Nitriding depth: 0.4-0.7 Hardness (HV): 740-940 Surface roughness ≤ 0.8um |
| SJZS 55/110 | 180-280kg/h | 22 kW; AC motor | 38.4 rpm | 400w × 3 wind cooling fan | ||
| SJZS 65/132 | 300-350 kg/h | 37 kW; AC motor | 38.4 rpm | 550w × 3-wind cooling fan | ||
| SJZS 80/156 | 400-450kg/h | 75 kW; AC motor | 40 rpm | 550w × 5 wind cooling fan |
Wood Plastic Profile Extrusion Line Video
WPC Outdoor Flooring Extrusion Machine Video
What is the typical mixing ratio of wood to plastic?
For PE/PP-based WPC, the wood content usually ranges from 50% to 70%, with the remaining 30–50% consisting of plastic resin and additives (coupling agents, lubricants, and UV stabilizers).
Why use PE/PP instead of PVC for WPC?
PE/PP WPC is generally more flexible and impact-resistant, making it the industry standard for outdoor decking. PVC-based WPC is more rigid and often used for indoor decorative profiles or cellular foam boards.
Which type of extruder is best: Single or Twin Screw?
Conical twin-screw extruders are the gold standard for WPC. They provide superior shearing and mixing of the high-viscosity wood-plastic melt compared to single-screw models.
How is moisture handled in the extrusion line?
Moisture is the enemy of WPC. The extrusion line must include a venting (degassing) system on the extruder barrel to allow steam to escape. Additionally, wood flour must be pre-dried to <2% moisture.
Why is my profile cracking at the edges?
This is often due to “edge tearing” caused by improper cooling, a die temperature that is too low, or a lack of lubricant in the formula.
How do I choose the right plastic extrusion line for my business?
The choice depends on your specific needs, including the type of plastic you will process, the desired final product, required production capacity (throughput), and your budget. A good manufacturer will offer consultation to help you choose the right machine and plastic extrusion line configuration.
How much does plastic extrusion line cost?
The cost can vary significantly depending on the machine’s size, type (single vs. twin screw), production capacity, level of automation, and the inclusion of downstream equipment. It’s important to consider the total cost of ownership, including energy consumption, maintenance, and spare parts.
How do you handle shipping, installation, and commissioning?
We will outline the process for delivery, installation at the customer’s facility, and commissioning to ensure the machine is set up and running correctly.
Recommended Plastic Extrusion Line
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