Double Single Shaft Film Shredder Technical Analysis
2026-05-20
As a core machine in plastic recycling lines, the
Double Single Shaft Film Shredder is becoming an essential solution for improving recycling efficiency, reducing operating costs, and enhancing recycled plastic quality.
The double/single shaft film shredder from
Dajiang Machinery is specially engineered for soft plastics, highly entangled materials, and bulky waste plastics. It is widely used in plastic washing lines, waste plastic recycling systems, and industrial solid waste processing applications.
What Is a Double Single Shaft Film Shredder?
A double/single shaft film shredder is a low-speed, high-torque industrial shredding machine designed for primary shredding and volume reduction of waste plastic films.
Single shaft shredders are generally suitable for:
- PE/PP films
- Plastic scraps
- Woven bags
- Medium-hard plastics
- Injection molding waste
Double shaft shredders are more suitable for:
- Large film bales
- Highly tangled plastics
- Industrial waste films
- Agricultural mulch films
- Mixed plastic waste
According to industry sources, double shaft shredders use counter-rotating dual rotors to achieve efficient shredding through shearing, tearing, and compression.
Importance of Film Shredders in Plastic Recycling
Waste plastic films usually have the following characteristics:
- Large volume
- Lightweight
- Easy to wrap
- Difficult to convey
- Easy to clog machinery
Therefore, before entering washing lines, dewatering machines, or pelletizing systems, films need pre-treatment through shredding equipment.
Main Functions Include:
- Volume Reduction:After shredding, film size is significantly reduced, making transportation, storage, and downstream processing easier.
- Improve Washing Efficiency:Shredded plastics contact water more effectively, improving contaminant removal efficiency.
- Enhance Pelletizing Stability:Uniform shredded materials improve extruder feeding consistency.
- Reduce Transportation Costs:Reduced material volume lowers logistics and storage costs.
Working Principle of Double Shaft Film Shredder
The double shaft film shredder adopts a dual-shaft structure driven by gear reducers, operating at low speed and high torque.
During operation:
- Two cutter shafts rotate toward each other
- Blades interlock with each other
- Materials are continuously pulled
- Shearing and tearing forces are generated
Industry sources indicate that dual-shaft structures are especially suitable for high-toughness and highly entangled plastic films.
Working Principle of Single Shaft Film Shredder
Single shaft shredders use a single rotor design with a hydraulic feeding ram system.
The workflow includes:
- Hydraulic ram pushes materials
- Rotor blades shear materials
- Screen controls output size
Compared with dual-shaft equipment, single shaft shredders provide more uniform output particle sizes.
Comparison Between Double Shaft and Single Shaft Film Shredders
| Item |
Double Shaft |
Single Shaft |
| Structure |
Dual Rotor |
Single Rotor |
| Torque |
High |
Medium |
| Output Size |
Coarser |
More Uniform |
| Suitable Material |
Bulky Films |
Fine Shredding |
| Wrapping Resistance |
Excellent |
Good |
| Maintenance |
More Complex |
Simpler |
| Applications |
Primary Shredding |
Secondary Shredding |
Core Technical Advantages of Film Shredders
- Low-Speed High-Torque Design:Low rotational speed reduces dust generation and operating noise.
- High Wear-Resistant Blades:Industrial shredders often use high-strength alloy steel blades such as SKD11 and DC53.
- Automatic Reverse Protection System:When blockages occur, the PLC system can automatically reverse the shafts to prevent motor overload.
- High Efficiency and Energy Saving:Modern film shredders optimize blade arrangement and drive systems to improve energy efficiency.
- Modular Structure:Convenient for blade replacement and equipment maintenance.
Why Choose Dajiang Machinery?
Dajiang Machinery Official Website specializes in the development and manufacturing of plastic recycling machinery, including:
- PE film washing lines
- PET bottle recycling lines
- Single shaft and double shaft shredders
- Plastic crushers
- Plastic milling machines
Its equipment is widely used in global plastic recycling projects.
As global environmental regulations continue to strengthen, the plastic recycling market will keep expanding, and high-quality film shredders will play an even more important role in future recycling systems.
