Single Screw Granulator
Industrial Application & Positioning
The Single Screw Granulator is an industrial-grade pelletizing system designed for continuous plastic recycling production lines.
It is widely used to convert post-consumer and industrial plastic waste into reusable pellets with stable quality, low energy consumption, and long-term operational reliability.
This system is optimized for 24/7 industrial operation, especially in recycling plants requiring stable throughput and low downtime.
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Applicable Materials
The system is suitable for a wide range of plastic waste streams:
LDPE / HDPE films (agricultural film, packaging film, shrink film)
PP woven bags, raffia, jumbo bags
Post-washing plastic flakes
Industrial plastic scrap
Lightly contaminated mixed plastics
Feeding system (manual or automatic hopper feeding)
Single screw plasticizing and melting system
Hydraulic screen changer filtration system (optional)
Vacuum degassing system (moisture & volatile removal)
Extrusion die head
Pelletizing system (water ring / strand / underwater optional)
Cooling, drying & storage system
Technical Specifications
Final configuration is customized based on material type and production requirements.
Output capacity:
100 – 1000 kg/h
Screw diameter:
65 – 180 mm
L/D ratio:
28:1 – 33:1
Installed power:
37 – 160 kW
Energy consumption:
~0.25 – 0.45 kWh/kg (material dependent)
Pellet size:
3 – 5 mm (adjustable)
Operation mode:
Continuous 24-hour production
Cooling method:
Water ring / strand / underwater system
Engineering Design Advantages
Film Waste (LDPE / HDPE)
Optimized compression ratio for stable melting
Prevents material bridging and overheating
Improves melt uniformity and extrusion stability
Rigid Plastics
High shear screw design ensures complete plasticization
Improves melting consistency and density control
Mixed Waste Streams
Reinforced filtration system reduces screen clogging frequency
Stable pressure control under variable input conditions
Moist / Contaminated Materials
Vacuum degassing removes moisture and volatile gases
Improves pellet density and surface quality
Performance Comparison (Market Benchmark)
Compared with conventional single-stage granulators:
15–30% lower energy consumption per ton
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20–40% reduced downtime due to improved filtration design
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More stable pellet size distribution (lower deviation rate)
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Higher adaptability to mixed waste streams
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Lower total operating cost per ton
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Global Application Experience
The system has been deployed in multiple industrial recycling environments:
Middle East:
PP woven bag recycling production lines (high dust & mixed contamination conditions)
Southeast Asia:
LDPE film washing and pelletizing systems (high humidity and moisture content)
Africa:
HDPE bottle flake recycling plants (variable raw material quality and supply stability challenges)
Factory Testing & Quality Assurance
Each machine is tested before delivery under real production conditions:
24–48 hours continuous full-load operation test
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Material simulation testing (film / rigid / mixed plastics)
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Thermal stability verification across all heating zones
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Output consistency and pellet uniformity inspection
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Electrical safety and system integration testing
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Turnkey Recycling Plant Solutions
We provide complete plastic recycling plant systems:
- Shredding system
- Washing & friction cleaning system
- Dewatering & drying system
- Single screw granulation system
- Pellet cooling, storage & packaging system
Manufacturing Standards & Compliance
ISO-based manufacturing quality system
CE compliance available (optional based on market requirement)
Factory pre-shipment load testing
Export-standard electrical configuration (EU / US / custom voltage)
Proven installation experience in global markets
Service & Engineering Support
Raw material testing & process evaluation
Customized plant layout design (2D/3D layout available)
Remote and onsite installation support
Operator training program
Spare parts supply system
Long-term technical maintenance support
ROI & Investment Analysis
Typical payback period for recycling pelletizing plants:
8–18 months, depending on:
Local plastic waste cost
Production capacity
Electricity cost per kwh
Pellet selling price
Plant utilization rate
FAQ
We're well-known as one of the leading single screw granulator manufacturers and suppliers in China since 1988, featured by quality products and low price. Please feel free to wholesale cheap single screw granulator for sale here from our factory. We also accept customized orders.
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