An Oman customer purchased a PET flakes washing line from our company with a capacity of 3 tons per hour. This plastic recycling and washing line features the following characteristics:
Overview of PET flakes washing line
A PET flakes washing line is an automated system designed to convert post-consumer PET bottles into clean, contaminant-free flakes.These flakes are widely used in manufacturing polyester staple fibers,strapping,or high-purity bottle-to-bottle pellets.
Modern PET washing systems are highly efficient and incorporate several key features:
Core Processing Capabilities
Automatic Debaling:Automatic debaling (using a debaler or bale breaker) is the vital first step in a PET flakes washing line.It transforms densely compacted,post-consumer PET bales into a free-flowing,single-bottle stream.This process guarantees a consistent material flow,protects downstream machinery from damage,and drastically reduces manual labor.
Advanced Sorting & Metal Detection:Advanced sorting and metal detection in a a food grade pet bottle washing recycling line utilize multi-sensor optical systems and precision electromagnetic sensors.These technologies maximize yield and purity by automatically removing foreign polymers,colored flakes,and both ferrous and non-ferrous metals to meet strict food-grade standards.
Label Removal & Granulation:Label removal and granulation are critical phases in a pet bottle recycling washing line.Label removal strips off shrink-sleeve and paper labels(using label removal machine)before shredding(using pet bottle crusher machine),while wet granulation grinds bottles into uniform flakes(using plastic recycling granulator machine) while applying primary washing to remove surface contaminants.
Cleaning & Decontamination Technology
Sink-Float Separation Tanks:Sink-Float Separation Tanks utilize the distinct density differences between materials to separate heavier PET flakes from floating contaminants like PP/PE caps,labels,and adhesives.Consistently achieving 98–99% purity,these tanks protect downstream equipment and yield high-value rPET.
Hot Washing Systems:Hot washing systems in a food grade b2b pet bottle washing line use a combination of heat (85-95°C),chemical agents (like caustic soda),and mechanical friction to dissolve adhesives and remove stubborn organic contaminants.This critical step ensures high-purity,food-grade flakes by eliminating label glue,beverage residue,and bacteria.
High-Speed Friction Washing:A High-Speed Friction Washer is a critical mechanical cleaning stage in a pet bottle flakes hot washing machine.Operating at around 1,000 RPM,it utilizes centrifugal force and targeted water sprays to violently scrub flakes against one another,stripping away stubborn adhesives,labels,and fine organic impurities.
Drying & Resource Management
Multi-Stage Rinsing:Multi-stage rinsing in a fibre grade pet bottle washing line or food grade b2b pet bottle washing line removes residual caustic soda,detergents,and loosened impurities from prior wash cycles.It guarantees high-purity flakes(≤ 100 ppm impurities)suitable for food or fibre-grade applications by operating across a series of specialized rinsing and centrifugal cleaning units.
Centrifugal & Thermal Drying:Centrifugal and thermal drying in a pet bottle crushing and washing line act as a two-stage sequential system.Centrifugal dewatering first removes 90–95% of surface water mechanically.Thermal drying then uses heated air to evaporate remaining moisture,achieving the moisture(<1%) required to prevent PET molecular degradation during extrusion.
Water & Energy Conservation:Water and energy conservation in a pet bottle recycling machine are achieved through closed-loop water recycling,multi-stage filtration,and thermal optimization.These features reduce fresh water usage by up to 80%,lower operational costs,and produce high-quality rPET flakes suitable for demanding downstream processing.
Structural & Operational Features
Modular Design:A modular design in a pet bottle fiber making machine divides the recycling process into independent,standardized units (e.g.,shredding,friction washing,sink-float separation,and drying).This configuration allows for easy scalability,customized cleaning based on contamination levels,and targeted maintenance without halting the entire operation.
Stainless Steel Construction:Stainless steel construction in a PET flakes washing line is essential for preventing corrosion,eliminating secondary pollution,and ensuring durability.Typically utilizing 304 or 316-grade stainless steel,this robust build protects machinery from caustic chemicals,abrasive wet plastics,and high-temperature environments.
High Automation:High-automation PET flakes washing lines utilize centralized PLC systems and intelligent sensors to minimize labor costs,maximize throughput (1,000–3,000 kg/hour),and guarantee uniform flake purity.This automation governs the entire processing chain from optical sorting and hot washing to centrifugal drying.
