Nanjing MKPL Machinery Co.,Ltd.
| Screw Diameter | 65–200 mm (primary), 90–200 mm (secondary) |
| L/D Ratio | 30–40:1 (primary), 10–16:1 (secondary) |
| Motor Power | 22–250 kW |
| Output Capacity | 150–1500 kg/h |
| Packaging Details | Containers, wooden crates |
| Delivery Time | 10-30 working days |
| Payment Terms | 8477900000 |
| Supply Ability | 1pc/day |
| Brand Name | MKPL |
| Model Number | Two-Stage Extruder |
| Certification | ISO9001 |
| Place of Origin | China |
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Product Specification
| Screw Diameter | 65–200 mm (primary), 90–200 mm (secondary) | L/D Ratio | 30–40:1 (primary), 10–16:1 (secondary) |
| Motor Power | 22–250 kW | Output Capacity | 150–1500 kg/h |
| Packaging Details | Containers, wooden crates | Delivery Time | 10-30 working days |
| Payment Terms | 8477900000 | Supply Ability | 1pc/day |
| Brand Name | MKPL | Model Number | Two-Stage Extruder |
| Certification | ISO9001 | Place of Origin | China |
| High Light | Masterbatch granules extruder machine ，double stage granules extruder machine ，double stage polyethylene extruder machine | ||
A two-stage extruder, also known as a double-stage extruder, is a high-performance plastic recycling and pelletizing machine designed for processing high-moisture, high-impurity, and highly-volatile materials. It combines the advantages of a single-screw primary extruder and a secondary low-temperature extruder, delivering excellent degassing, stable melting, and superior filtration performance. This configuration makes the two-stage extruder ideal for PE/PP film recycling, woven bag recycling, foam materials, washing line flakes, and low-bulk-density plastics.
The two-stage extrusion process ensures efficient melt filtration, double degassing, and temperature stabilization, producing uniform, high-quality recycled pellets. This system is widely used in plastic recycling plants, packaging material recovery, agricultural film reprocessing, and industrial waste recycling.
Applications of the Two-Stage Extruder
PE/PP Film Recycling: agricultural film, stretch film, packaging film.
Woven Bag & Raffia Recycling: PP woven bags, jumbo bags, tapes.
Foam Material Recycling: EPS, EPE, XPE foam reprocessing.
Washed Flake Pelletizing: post-consumer or post-industrial flakes.
Low-bulk-density Materials: soft plastics, foam scraps, lightweight waste.
General Plastic Reprocessing: LDPE, HDPE, LLDPE, PP, EVA, ABS.
Technical Specifications
|
Parameter |
Specification |
|
Extruder Configuration |
Primary single screw + secondary single screw |
|
Screw Diameter |
65–200 mm (primary), 90–200 mm (secondary) |
|
L/D Ratio |
30–40:1 (primary), 10–16:1 (secondary) |
|
Motor Power |
22–250 kW |
|
Output Capacity |
150–1500 kg/h |
|
Degassing System |
Double vacuum venting |
|
Filtration |
Manual / hydraulic screen changer |
|
Feeding System |
Belt conveyor / compactor feeder / screw loader |
|
Pelletizing Options |
Strand pelletizer, water-ring pelletizer, die-face cutting |
|
Control System |
PLC + touchscreen + temperature & pressure monitoring |
These specifications allow the two-stage extruder to handle contaminated, wet, or unstable materials with exceptional efficiency and consistency.
Key Advantages
Double degassing design removes moisture, ink, and volatile impurities effectively.
Stable low-temperature secondary stage prevents material degradation and burning.
High-performance melt filtration ensures clean, uniform recycled pellets.
Designed for high-moisture and high-impurity plastics, providing stable output.
Energy-efficient motors and optimized screw structure reduce operating costs.
Large capacity, suitable for heavy-duty industrial recycling operations.
FAQ
Q1: What materials are suitable for a two-stage extruder?
PE, PP, LDPE, HDPE, LLDPE, PP woven materials, foam, washed flakes, and soft plastics.
Q2: Why choose a two-stage extruder instead of a single screw?
Two-stage extruders offer better degassing, filtration, stability, and pellet quality, especially for film and foam.
Q3: Can the feeding system be customized?
Yes. Options include conveyor feeding, compactor feeder, or force-feeding hopper.
After-Sales Service
We provide complete installation support, operator training, process optimization, 24/7 online technical assistance, spare parts supply, and lifetime maintenance guidance to ensure your two-stage extruder runs efficiently and reliably.
Company Details
Business Type:
Manufacturer
Year Established:
2016
Total Annual:
800million-1000million
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Over the past more than ten years, MKPL has been known as a professional manufacturer of advanced extruder production line. We are a professional supplier of compounding and modification extruders., with hundreds of extruder production lines running in the world, perfect and effective service networ... Over the past more than ten years, MKPL has been known as a professional manufacturer of advanced extruder production line. We are a professional supplier of compounding and modification extruders., with hundreds of extruder production lines running in the world, perfect and effective service networ...
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