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Plastic Optical Sorting Machines: Precision Sorting, Empowering a New Future for the Plastic Circular Economy
Against the backdrop of global plastic pollution control and the accelerated advancement of the circular economy, plastic optical sorting machines, with their core advantages of high-precision identification, efficient sorting, and environmental friendliness, have become the “core sorting engine” for plastic recycling, recycled pellet production, and PET bottle flake processing. By integrating multispectral sensing, AI intelligent algorithms, and high-speed actuators, plastic optical sorting machines overcome the bottlenecks of traditional sorting technology and drive the plastic recycling industry towards intelligent, high-value production.
I. Technological Breakthrough: Multispectral + AI, Reshaping Plastic Sorting Precision
The core technology of the plastic optical sorting machine is centered around an optical sensing system and an AI decision-making system, combined with high-speed pneumatic actuators to form a closed-loop “perception-analysis-execution” sorting system:
1. “Spectral Eyes” that See Through Everything:
High-precision NIR Sensors: Capture the unique “fingerprint” of plastic molecules in response to near-infrared light, enabling essential material identification.
High-resolution Color Cameras: Accurately analyze color, shape, and surface defects to meet the most stringent appearance sorting requirements.
2. “AI Brain” that Makes Decisions in Milliseconds:
Deep Learning Algorithm: Trained on a massive library of plastic samples, the recognition model becomes increasingly accurate with use, easily handling complex new varieties.
Intelligent Learning Platform: Users can customize sorting criteria and add new material models with a single click, flexibly adapting to future needs.
3. Accurate “Spray Arm”:
Array-type High-Frequency Solenoid Valve: Response speeds in microseconds enable pinpoint, precise spraying of plastic pellets during their parabolic motion, ensuring no accidental damage or omissions.
4. Dual Precision in Material and Color, Eliminating Mixture Risks
Equipped with a multispectral recognition system and AI material analysis algorithms, it accurately distinguishes between different plastic materials, including PP, PE, PET, PVC, and ABS. It also identifies subtle color differences between white, black, and other colors, and can even filter out defective products with scratches, stains, and impurities. With a sorting accuracy exceeding 99.5%, it completely eliminates the difficulty of manual identification of similar plastics and ensures the purity of plastic pellets and finished products from the source.
5. High-Speed Processing, Suitable for Mass Production
Utilizing a high-speed jet sorting mechanism and continuous feed design, it can process 1-10 tons of plastic material per hour (depending on the model) and supports sorting various plastic forms, including crushed, pellets, and flakes. Operating 24/7, it eliminates the need for manual shifts and boasts 10-20 times higher efficiency than manual sorting, easily adapting to the mass production schedules of large-scale recycling plants or plastics processing plants.
6. Intelligent Adjustment, Flexible for Multiple Scenarios
Equipped with a 7-inch touchscreen, the sorting parameters for different plastic categories (e.g., PET flakes, PP crushed, colored plastic pellets, etc.) can be saved with one click, eliminating the need to re-adjust when switching between materials. Customizable sorting criteria (e.g., rejecting specific color impurities or retaining specific materials) are supported, enabling rapid adaptation for both recycled plastic recycling and impurity filtering of virgin plastic prior to pelletization.
7. Cost Reduction and Efficiency: Green and Environmentally Friendly
Pure physical optical sorting eliminates the need for chemical reagents, preventing secondary plastic contamination and complying with environmental regulations. Utilizing low-power optical components and energy-efficient motors, it reduces energy consumption by over 25% compared to traditional sorting equipment. This also reduces plastic waste (loss rate ≤ 0.3%), lowering labor and management costs. Most customers achieve a payback period of 6-12 months.
II. Application Scenarios: Completely Covering the Entire Chain from Waste to High-Value Resources
1. PET Bottle Recycling: The “Quality Checkpoint” for Food-Grade Recycled Materials
2. Sorting Purity Exceeds 99.5%: PET bottles are identified through near-infrared spectroscopy, combined with fluorescence detection to eliminate impurities such as PVC and PS. The melt index of sorted bottle flakes meets 100% of the standard.
3. High-Efficiency: A single unit can process 15 tons/hour, replacing 30 manual sorters and reducing operating costs by 70%.
4. Mixed Plastic Sorting: Increases the added value of recycled pellets
5. Multi-Material Separation: Simultaneously sorts mixed plastics such as PP, PE, and PS, achieving a purity of ≥98% after sorting, suitable for direct use in high-end applications such as injection molding and blown film.
6. Color Sorting: Distinguishes between transparent, blue, and green plastics to meet the customized needs of home appliance and daily chemical packaging.
7. Industrial Plastic Recycling: Reduces production costs
8. Scrap Sorting: Separates impurities such as metal, rubber, and coatings from scrap materials such as automobile bumpers and home appliance housings, with a sorting efficiency exceeding 95%.
9. Flame Retardant Detection: Identifies plastics containing brominated flame retardants through spectral signatures, minimizing the risk of combustion in recycled materials.
10. E-commerce Packaging Recycling: Supports the “Dual Carbon” goals
11. Express Bag Sorting: Distinguishes between PE express bags and PP bubble wrap, achieving a purity of ≥97% after sorting, promoting the green transformation of the express delivery industry.
12. Data Traceability: Combined with OCR character recognition, this system tracks plastic packaging production batches and supports carbon footprint accounting.
13. Recycled Plastic Recycling: Sorting of scrap plastic (e.g., removing impurities from PET bottle flakes, separating PP/PE film, and sorting mixed plastics by material) improves the purity of recycled materials and facilitates plastic recycling.
14. Plastic Granulation: Screening virgin or recycled plastic for off-color and impurity particles before granulation ensures uniformity and prevents color variations or defects in downstream products.
15. Plastic Product Production: Surface defect inspection and color sorting of plastic sheets and profiles, such as screening out defective colored plastic parts, improves the yield of finished products.
16. Plastic Recycling and Sorting Center: Sorting mixed scrap plastic (e.g., crushed plastic bottles and plastic baskets) by material and color, providing high-purity raw materials for subsequent processing.
