| Availability: | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Quantity: | |||||||||
Product Description
The Air Classifier, also known as a Zig Zag Separator or Air Separation Machine, is an important separation device used in PET bottle recycling lines. It is specially designed to separate lightweight PP/PE label films from heavier PET flakes through controlled airflow and air pressure technology.
At Chenxing Machinery, we manufacture industrial-grade air classifier systems engineered for high separation efficiency, stable operation, and reliable long-term performance. Our zig zag separators help recycling plants improve PET flake purity while reducing contamination in downstream processing.
An air classifier is a pneumatic separation machine that uses airflow to separate materials according to weight and aerodynamic characteristics.
In PET bottle recycling systems, crushed PET bottles usually produce a mixed material stream containing:
PET flakes
PP/PE label films
Lightweight plastic particles
Dust and small contaminants
The air classifier effectively separates the lighter PP/PE films from the heavier PET flakes, improving recycled PET quality before washing, drying, or pelletizing processes.
Because of its zig zag internal structure, the machine is commonly referred to as a zig zag separator.
During PET bottle crushing, bottle labels are shredded together with PET material. If these lightweight films are not removed effectively, they can:
Reduce PET flake purity
Affect washing efficiency
Cause contamination during extrusion
Lower recycled PET product quality
Increase downstream processing costs
An air classifier helps recycling plants achieve cleaner PET flakes by efficiently removing lightweight plastic labels before further processing.
The mixed material stream enters a sorting chamber where a controlled upward airflow is generated.
Inside the machine:
PET flakes and PP/PE films enter the separation chamber.
High-speed airflow pushes lighter materials upward.
Lightweight PP/PE label films are carried into the collection chamber.
Heavier PET flakes fall downward by gravity.
Clean PET flakes continue to the next stage of the recycling line.
This airflow-based separation process allows continuous automatic operation with high sorting efficiency.
Effectively separates lightweight films from PET flakes, improving final recycled material purity.
Optimized airflow design ensures consistent and reliable material separation.
Suitable for large-scale industrial PET bottle recycling systems.
The system can be customized according to customer capacity requirements and recycling line configurations.
Efficient blower systems reduce operating costs while maintaining high performance.
The machine is designed for convenient cleaning and maintenance, reducing downtime.
Widely used after crushing and before washing systems to separate label films from PET flakes.
Improves material purity before hot washing and drying stages.
Suitable for separating lightweight contaminants from heavier recyclable materials.
Ideal for industrial plastic recycling facilities requiring high-purity recycled PET flakes.
| Specification | Details |
|---|---|
| Blower Motor | 5.5 KW / 7.5 KW / 11 KW |
| Rotary Valve Motor | 1.5 KW |
| Rotary Valve Diameter | Ø270mm |
| Rotary Valve Rotating Speed | 50 RPM |
Installing an air classifier in a PET bottle recycling line provides several important advantages:
Higher PET flake purity
Better separation of label films
Improved washing efficiency
Reduced downstream contamination
Increased recycled PET value
Lower maintenance costs
Enhanced automation and productivity
For modern recycling facilities, air separation technology is an essential process for producing premium-quality recycled PET materials.
Chenxing Machinery has extensive experience manufacturing plastic recycling and extrusion machinery for global customers.
We provide complete recycling system solutions tailored to:
Material type
Production capacity
Plant layout
Automation requirements
Every machine undergoes detailed inspection and testing before delivery.
Our professional team provides:
Equipment consultation
Installation guidance
Commissioning assistance
After-sales technical support
The machine is mainly used to separate PET flakes from PP/PE label films and lightweight contaminants.
Air classification improves PET flake purity by removing lightweight label materials before washing and pelletizing.
Yes. Chenxing Machinery can customize air classifier systems according to customer production requirements.
Yes. The equipment is designed for stable continuous production in industrial recycling plants.
Absolutely. It is commonly integrated into complete PET bottle washing and recycling systems.
Looking for a reliable air classifier manufacturer for your PET bottle recycling project?
Chenxing Machinery provides advanced zig zag air separation systems designed for high-efficiency plastic recycling applications worldwide.
Visit Chenxing Machinery Official Website to learn more about our recycling equipment and complete PET recycling solutions.



Introduction: Why Plastic Waste Is Becoming a Construction ResourceGlobal plastic waste generation continues to rise every year, creating increasing pressure on landfills and marine ecosystems. At the same time, the construction industry is facing rising material costs and demand for sustainable alt
What Is a 3D Motion Mixer?A 3D motion mixer (three-dimensional motion mixer) is a high-efficiency industrial blending machine designed to achieve ultra-uniform mixing of powders, granules, and other solid materials. Unlike traditional mixers that rely on simple rotation or stirring, a 3D motion mixe
China has become one of the largest manufacturing centers for PVC pipe extrusion machinery.Global buyers choose Chinese suppliers because of:· Competitive pricing· Mature manufacturing technology· Fast delivery· Customization capability· Complete turnkey solutionsWhen selecting a manufacturer, buyer
PVC pipe manufacturing begins with raw material preparation.PVC resin, stabilizers, lubricants, and fillers are mixed in a high-speed mixer.The mixed material enters the conical twin screw extruder where it is heated and plasticized.The melt flows through the die head to form the pipe.Vacuum calibra
Energy consumption is one of the largest operating costs in PVC pipe manufacturing.Modern extrusion technology focuses on:· High-efficiency motors· Intelligent heating systems· Optimized screw structures· Automated process controlVariable frequency drives help reduce electricity waste during operati
PVC pipe extrusion output depends on:· Extruder model· Screw design· Pipe diameter· Material formulation· Cooling efficiencySmall extrusion lines may produce 100kg/h while large industrial systems can exceed 800kg/h.Multi-cavity pipe production lines significantly improve productivity for small-diam
A complete PVC pipe extrusion line is more than just an extruder.The full system includes:· High-speed mixer· Material loader· Conical twin screw extruder· Extrusion mold· Vacuum calibration tank· Cooling tank· Haul-off machine· Cutting machine· Pipe stackerThe mixing unit prepares PVC resin and add
Stable pipe quality is essential in PVC pipe manufacturing.Common extrusion problems include:· Uneven wall thickness· Pipe collapse· Surface roughness· Yellowing· Diameter instabilityThese issues are usually related to:· Incorrect temperature settings· Poor raw material formulation· Vacuum instabili
Different PVC pipe diameters require different extrusion configurations.Small-diameter pipes such as electrical conduits usually use multi-cavity extrusion systems to maximize output.Large-diameter water supply pipes require:· Larger extruders· Stronger vacuum calibration systems· High-capacity cool
Choosing between a single screw extruder and a twin screw extruder is one of the most important decisions in PVC pipe manufacturing.Single screw extruders are mainly used for PE, PP, and other polyolefin materials. They offer stable conveying performance and lower maintenance costs.Twin screw extrud
The cost of setting up a PVC pipe production line depends on production capacity, pipe diameter range, automation level, and auxiliary equipment.A small PVC pipe production line may cost between $30,000 and $80,000, while a fully automatic high-output line can exceed $300,000.Key equipment includes:
PVC pipe extrusion lines are essential equipment in modern plastic pipe manufacturing. From water supply pipes to electrical conduits and drainage systems, PVC pipes are widely used due to their corrosion resistance, lightweight structure, and cost efficiency.A complete PVC pipe extrusion line usual
Can You Estimate Your Real Recycling Cost Per Ton?Most investors in PET recycling focus on machine price and capacity, but the real profit depends on one key metric: Cost per ton of washed PET flakes (USD/ton)This calculator-style guide helps you estimate your real operating cost step by step. S
Differences, Advantages, and Applications in Plastic Recycling LinesIn modern plastic recycling systems, drying technology plays a critical role in determining the final quality of recycled plastic flakes and pellets. After washing processes such as friction washing, hot washing, and sink-float sepa
What Is the Difference Between These Two Plastic Pipe Cutting Systems?In modern plastic pipe extrusion production lines, manufacturers often focus on:Extruder performanceMold designCooling systemsAutomation controlHowever, one critical component is frequently underestimated:The Pipe Cutting SystemA
Introduction: Why New Composite Building Materials Matter TodayPlastic waste is one of the defining environmental challenges of our era — yet it is also a feedstock with enormous untapped value. Advances in recycling technology now let plants convert post-consumer and post-industrial plastics into r
The Key to Precision Feeding in Modern Plastic Extrusion and Recycling SystemsIn today’s plastic manufacturing industry, production efficiency and material accuracy are more important than ever. Whether in plastic extrusion, compounding, recycling, or automatic batching systems, even a small feeding
The Essential Air Separation Equipment in PET Bottle Recycling LinesAs the global recycling industry moves toward higher-quality recycled plastics, efficient material separation has become one of the most important steps in modern recycling systems. In PET bottle recycling, one major challenge is se
What is a Constant Pressure Variable Frequency Water Supply System?A Constant Pressure Variable Frequency Water Supply System is an intelligent water supply solution that uses variable frequency drive (VFD) technology to maintain a stable and consistent water pressure in industrial processes, regard
What is a Friction Washer?A friction washer is a high-speed mechanical cleaning machine used in plastic recycling lines to remove surface contaminants such as dirt, sand, labels, oil residues, and fine impurities from plastic flakes or film materials.In modern recycling engineering, it is widely app

