Parallel Twin Screw PE Pelletizing Line
Parallel twin screw PE pelletizing line is the core equipment for recycling and processing of PE plastics. It converts PE recycling pellets, wood powder, CACO3 and some additives into reusable granular raw materials through physical processing and is widely used in various links of the plastic industry chain, especially PE-based wpc decking floor production.
| Model | L/D Ratio | Motor Power (kW) | Capacity (kg/h) |
|---|---|---|---|
| 50 | 32–48 : 1 | 37 / 45 | 20–150 |
| 65 | 32–48 : 1 | 55 / 75 | 100–300 |
| 75 | 32–48 : 1 | 90 / 110 | 300–600 |
| 92 | 32–40 : 1 | 220 / 250 | 600–1000 |
Parallel twin screw pe pelletizing line has the following characteristics:
1. Targeted WPC Decking Material Processing
Parallel twin screw pe pelletizing line, Specialized parallel twin-screw structure, perfectly tailored for compounding PE (including recycled PE) with wood powder, calcium carbonate and other additives, producing uniform pellets that meet the strict raw material requirements of WPC decking extrusion.
2. High Mixing & Homogenization Performance
The tapered screw design of this parallel twin screw pe pelletizing line creates strong shearing and kneading force, ensuring full dispersion of wood fiber in the PE matrix; avoids fiber agglomeration and material stratification, thus enhancing the mechanical strength and weather resistance of the final WPC decking products.
3. High Efficiency & Low Energy Consumption
Large feeding capacity and high-pressure extrusion capability, with a production capacity of 300–1000kg/h; energy consumption is only 80–110kWh per ton of pellets, significantly reducing the operating cost of WPC raw material production.
4. Low-Temperature Processing Protection
Parallel twin screw pe pelletizing line adopts low-shear, low-temperature extrusion technology to inhibit thermal degradation of wood fiber, retaining the fiber’s original toughness; the produced pellets have stable melt flow index, ensuring smooth and consistent WPC decking extrusion.
Parallel twin screw pe pelletizing line operation mainly includes the following steps:
1. Raw Material Pre-mixing
Add PE recycled pellets, wood powder, calcium powder and additives into the high-speed mixer in proportion; mix thoroughly at a controlled temperature to ensure uniform dispersion of all components without agglomeration.
2. Twin-Screw Extrusion & Compounding
The materials enter the tapered twin-screw barrel, where they undergo gradual heating, melting, shearing and kneading; the cone screw’s unique structure generates high pressure to fully fuse PE matrix with wood fiber and calcium powder, inhibiting fiber degradation at low temperature.
3. Melt Extrusion & Pelletizing
The well-compounded molten material is extruded through the die head to form uniform strips; the strips are then sent to the pelletizer for high-speed cutting to produce pellets of Φ2–4mm (customizable size).
4. Cooling & Screening
The newly cut pellets are cooled rapidly by air or water to stabilize their shape and performance;
After cooling, the pellets pass through a vibration screen to remove oversized or undersized particles, ensuring consistent pellet size. Adding vibration is according to client’s requirements.
When using the parallel twin screw PE pelletizing line, there are the following precautions:
1. Raw Material Preparation & Pre-treatment
Ensure PE recycled pellets, wood powder and calcium powder are fully dried before feeding; remove impurities like metal particles from raw materials to prevent screw wear or barrel damage.
2. Feeding Parameter Calibration
Follow the recommended material ratio strictly; adjust the frequency conversion feeding speed according to the actual extrusion status, avoiding over-feeding (which causes barrel blockage) or under-feeding (which reduces production efficiency and pellet quality).
3. Temperature Control in Extrusion Process
Set a gradient temperature curve for the cone twin-screw barrel (recommended 140–180℃) based on material properties; avoid excessive temperature that leads to wood fiber degradation and PE melt aging, which will affect the performance of WPC decking pellets.
4. Screw & Barrel Maintenance
After daily production, clean the screw and barrel of parallel twin screw pe pelletizing line; avoid leaving mixed materials inside for a long time to prevent material carbonization and subsequent contamination of new batches.
5. Cooling & Screening System Check
Regularly inspect the cooling fan/water circulation system to ensure stable cooling effect; clean the vibration screen mesh periodically to prevent screen clogging and ensure accurate pellet size sorting.
6. Safety Operation & Compliance
Operate the parallel twin screw pe pelletizing line in accordance with CE safety standards; ensure emergency stop buttons are functional at all times. Do not disassemble any parts during machine operation to avoid safety hazards.
Unit specifications of Parallel Twin Screw PE Pelletizing Line
PVC Pelletizing Machine Line
PVC pelletizing machine line is the core equipment for recycling and processing of polyvinyl chloride (PVC) plastics. It converts PVC resin, additives and recycled waste into reusable granular raw materials through physical processing and is widely used in various links of the plastic industry chain.
SJ Series Rigid Plastic Single Screw Pelletizing Line
The SJ Series Rigid Plastic Single Screw Pelletizing Line is suitable for PP, PE, ABS, PC, PS flakes and scraps pelletizing. The extruder uses the high efficiency screw barrel to ensure the plasticizing effect and high output of the finished product. The forced vacuum exhaust system effectively removes low molecular impurities, moisture and ink. According to the contamination of material and customers’ habits, the variety of screen changers are available: plate screen changer, column screen changer and automatic screen changer. For different purposes, the variety of screw L/D ratio, two stage extrusion system and pelletizing method are available.
WPC Decking Flooring Board Making Machine
- Width of WPC Decking Profile: 100-300mm
- Thickness of WPC decking profiles: 15-30mm, according to clients’ requirement.
- Required materials of production WPC decking profiles: PE granules+wood power+additives
- Top layer (optional): PE granules
- For surface design: by embossing or molding.
- As a leading manufacturer and suplier, Sharc Machine Company offers a wide selection of automatic WPC Decking Flooring Board Making Machine, SHARC offers a turnkey solution of wood plastic composite decking profiles manufacturing.
Automatic WPC Door Board Machine
From SHARC’s Automatic WPC Door Board Machine , we can get all sizes WPC door board with changing the die(mold). If clients want to share one mold for different sizes, we can also manage that.
WPC Door Board Width: 800mm-1200mm or customerized
WPC Door Board Thickness: 35-40-45mm
Capacity: 8-16 tons per day
Required materials: PE+wood powder+Calcium carbonate+additives
