Views: 0 Author: Site Editor Publish Time: 2026-05-04 Origin: Site
In the global recycled plastic circular economy, the quality of recycled materials directly determines their commercial value and international market competitiveness. Waste plastics from household appliances, automotive dismantling, daily sundries and electronic waste often contain silicone rubber, rubber rings, adhesive residues and elastic impurities. These impurities are similar in density to plastics and difficult to remove by traditional methods such as air separation and magnetic separation. They severely affect the quality of recycled pellets, leading to unqualified downstream products and even rejection by international buyers.
As a core dry physical purification unit in the plastic sorting, crushing and milling line, silicone rubber sorting equipment is not an independent machine. It is deeply embedded in the process chain, following air separation and preceding buffer silos and grinding systems. Designed and manufactured in accordance with international industrial standards, it efficiently removes trace silicone rubber impurities, ensuring that recycled plastic materials meet the strict quality requirements of Europe, America, Southeast Asia, the Middle East and other global markets. It is an essential standardized unit for high-end recycled plastic production lines to enter the international market.
1. Process Positioning & Front-Rear Connection in the Entire Line
The plastic sorting, crushing and milling line adopts a sequential progressive process: tipping feeding → crushing → air separation → silicone rubber sorting → buffer storage → grinding → dust collection. As the key purification link, silicone rubber sorting equipment undertakes the critical task of removing elastic impurities, forming a complete closed-loop purification system with front and rear equipment.
Crusher: Crushes bulk waste plastics into uniform fragments (≤20mm) to meet the feed size requirement of the silicone sorter.
Air Separator: Removes light impurities (paper, foam, film) to avoid interference with subsequent silicone rubber sorting.
Buffer Silo: Receives high-purity plastic fragments, balances material flow, and provides stable feed for the grinding system.
Grinding System: Processes purified fragments into standard pellets; low impurity content ensures smooth grinding and high-quality finished products.
Without silicone rubber sorting, impurities enter the grinding system, causing equipment wear, reduced pellet quality, and failure to meet international standards (e.g., EU REACH, FDA). It is the quality assurance core of the entire line.
Silicone rubber and plastics have distinct friction coefficients and bounce characteristics:
Plastics (PP/PE/ABS/PET): Low friction, weak elasticity, slide down rollers smoothly.
Silicone/Rubber: High friction, strong elasticity, bounce and be discharged separately.
The equipment uses multiple inclined electroplated rollers to create a friction-bounce sorting surface. Materials are fed uniformly; plastics slide into the finished product bin, while silicone rubber bounces into the impurity bin, achieving one-time high-purity separation.
Frame Body: Thickened carbon steel, integral welding, high rigidity, low vibration, suitable for 24/7 continuous operation overseas.
Dispersing Feeding Unit: Centrifugal dispersion ensures uniform material distribution, avoiding material accumulation and improving sorting efficiency.
Vibration Feeding Mechanism: Adjustable frequency vibration feeds materials evenly onto rollers, adapting to different material characteristics.
Roller Sorting Unit: 4–6 groups of inclined electroplated rollers (angle adjustable 0°–15°); core component for friction-bounce separation.
Variable Frequency Drive System: International brand motor (7.5–15kW), voltage customization (380V/415V/480V), adapting to global power grids.
PLC Control Cabinet: Touchscreen operation, multi-language support (English/Spanish/Arabic), compliant with international automation standards.
Discharging Hoppers: Finished material hopper, impurity hopper, and fine powder hopper for classified collection.
Targets silicone rubber rings, rubber seals, adhesive residues, and elastic fragments in waste plastics (e.g., ABS from home appliances, PP from medical bottles, PE from daily sundries). After sorting, residual silicone content is ≤0.5‰, meeting the strict impurity standards of European and American recycled plastic buyers.
Adaptable to PP, PE, ABS, PET, PS, and engineering plastics. Suitable for:
Home Appliance Recycling: Refrigerator shells, TV casings, washing machine parts (removing silicone seals).
Automotive Dismantling: Bumpers, interior parts, door panels (removing rubber strips and silicone gaskets).
Daily Sundry Plastics: Packaging containers, disposable tableware, cosmetic bottles (removing adhesive labels and silicone residues).
Electronic Waste: Circuit board brackets, plastic casings (removing silicone shock-absorbing pads).
No Chemicals: Pure physical separation, no wastewater, exhaust gas, or secondary pollution, compliant with EU RoHS and international clean production standards.
Low Energy Consumption: 7.5–15kW power consumption, energy-saving design, meeting international industrial energy efficiency requirements.
Dust Sealing: Fully sealed structure with dust extraction ports, compatible with baghouse dust collectors, ensuring workshop dust emission ≤10mg/m³ (international standard).
PLC Intelligent Control: One-key start/stop, automatic fault alarm, real-time parameter monitoring, reducing labor dependence (1 operator suffices).
Wear-Resistant Components: Rollers with special anti-wear coating, long service life, easy replacement; wearing parts generalization, convenient for overseas spare parts procurement.
Compact Layout: Modular design, easy disassembly and transportation, suitable for container shipping (20ft/40ft), meeting international export packaging and logistics requirements.
CE Certification: Compliant with EU machinery safety directives (2006/42/EC), electrical safety (EN 60204), and electromagnetic compatibility (EN 61000).
ISO 9001: Quality management system certification, ensuring consistent product quality.
Safety Interlock: Emergency stop, overload protection, and door opening power-off functions, compliant with international mechanical safety norms.
Material Purity: Sorted plastic purity ≥99.5%, residual silicone ≤0.5‰, meeting the requirements of international recycled plastic grade standards (e.g., European EN 15348).
Emission Compliance: Dust emission concentration ≤10mg/m³, noise ≤75dB(A), compliant with EU environmental emission standards and local regulations in Southeast Asia, the Middle East, etc..
Multi-Country Power Adaptation: Supports 220V/60Hz, 380V/50Hz, 415V/50Hz, 480V/60Hz, adapting to power grids in Europe, America, Southeast Asia, Africa, etc..
Multi-Language Operation: English, Spanish, French, Arabic, Russian interfaces, adapting to operator habits in different regions.
Customized Design: Roller angle, speed, and feed volume adjustable; tailored for different material characteristics and impurity contents, meeting personalized demands of global customers.
High-End Recycled Plastic Pelletizing Plants: Produce food-grade and medical-grade recycled pellets for export to Europe and America.
Household Appliance Recycling Bases: Process waste refrigerator and TV plastics, removing silicone seals and rubber parts.
Automotive Dismantling & Recycling Enterprises: Treat automotive plastic parts, improving the purity of recycled materials.
Cross-Border Recycled Raw Material Production Bases: Supply high-purity recycled plastic fragments to global downstream processing enterprises.
Improve Product Value: High-purity recycled plastics can be sold at a premium (10%–20% higher than ordinary recycled materials) in the international market.
Enhance Export Competitiveness: Meet international quality and environmental standards, supporting Chinese recycling equipment and recycled materials to enter the global high-end market.
Reduce Production Costs: Automated sorting reduces labor costs; dry sorting eliminates wastewater treatment costs, improving enterprise profitability.
Promote Circular Economy: Efficient recycling of waste plastics reduces resource waste and environmental pollution, aligning with global sustainable development goals.
Silicone rubber sorting equipment is the core purification unit of the plastic sorting, crushing and milling line, and a key device for recycled plastics to meet international quality standards. It efficiently removes silicone rubber impurities via friction-bounce physical sorting, ensuring that recycled plastic materials have high purity, low impurity content, and stable quality.
Designed and manufactured in accordance with international standards (CE, ISO 9001), with modular structure, automated control, and environmentally compliant performance, it adapts to the application requirements of plastic recycling enterprises in various countries worldwide. It not only guarantees the quality of finished products of the entire line but also enhances the international market competitiveness of Chinese recycled plastic equipment and materials, making it an essential standard configuration for global high-end recycled plastic production lines.
