In-line metal detector for plastics processing

Prevent costly breakdowns in plastics production with an in-line metal detector designed to efficiently remove contaminants from polymer melts, ensuring smooth operations and product integrity.

Detects and Removes Metal Contaminants

The PROTECTOR Series from Sesotec is designed to enhance the reliability of your plastics, rubber, and chemical processing lines by effectively detecting and removing metal contaminants. Installed directly before injection moulding machines, extruders, and blow moulding machines, it inspects slow-moving material columns, enabling the removal of both ferrous and non-ferrous metals. With two-channel detection coil technology, PROTECTOR provides high sensitivity, ensuring minimal material loss. It operates under continuous and high-speed conditions, making it ideal for applications in plastics recycling, electrical waste processing, and more. Featuring auto-learn functionality and the “Quick-Valve” separation unit, it offers easy operation and maintenance. This system is CSA and UL certified for North American markets, and its compact design allows for seamless integration with other machinery, ensuring minimal operational disruption and minimal downtime. Available materials withstand up to 140°C, providing durability in harsh environments, while optional magnet separators offer enhanced ferrous removal.

Benefits

  • Enhances equipment protection, preventing costly repairs and downtime.
  • Increases product quality by thoroughly eliminating metal contaminants.
  • Streamlines operations with easy integration into existing production lines.
  • Minimizes material waste with precise separation technology.
  • Simplifies maintenance with an auto-learn and compact design.

General


Applications
Chemicals,Plastic compounds,Plastics processing,Glass,Household waste,Plastics,Petrochemical industry,Rubber and tyres,Electrical waste,Recycling
End products
Resin compounds,Pet bottles,Polypropylene sheets,Thermoplastic elastomers,Glass cullet,Fiberglass products,Recycled plastic filament,Synthetic rubber tires,Electrical insulation materials,Household plastic packaging,Hdpe containers,Plastic pellets,Rubber seals
Steps before
Purification,Drying,Regrind preparation,Material loading,Plastic pellet feeding
Steps after
Injection moulding,Extrusion,Blow moulding,Quality inspection,Packing
Input ingredients
polymer melt,regranulate,regrind,bulk good temperatures up to 140°C,coarse-grained material,plastic processing materials,virgin glass-filled material
Output ingredients
contaminant-free polymer melt,cleaned plastic processing materials,metal-free granulate
Market info
Sesotec is known for specializing in the development and manufacturing of innovative machine technology, particularly for metal detection, sorting, and separation systems used across industries such as food, plastics, and recycling, ensuring product quality and safety.

Technical Specifications


Accuracy
Highest sensitivity to all metals
Automation
Auto-learn function
Capacity
High levels of material throughput
Installation Position
Directly before injection-moulding machines,extruders,and blow-moulding machines
Size
Compact,space-saving design
Temperature Range
Bulk good temperatures up to 140°C
Resistance
Highest resistance to interference from vibrations and electrosmog
Operating Features
Preset operating parameters,easy operation
Material Compatibility
Inspecting slow-moving or standing material columns
Certification
UL and CSA certification
Separation Unit
"Quick-Valve" separation unit
Use with External Machinery
Adapter plates for compatibility with machines from other manufacturers
Self-monitoring Features
Visual and acoustic signalling units
Energy Monitoring
Compressed-air monitoring system

Operating Characteristics


Detection Accuracy
Highest sensitivity to all metals
Automation Level
Auto-learn function
Interference Resistance
High resistance to vibrations and electrosmog
Changeover Time
Quick assembly and integration
Material Loss
Minimal loss of material
Cleaning Method
Easy cleaning and maintenance
Installation
Easy installation
Visual,Acoustic Signaling
Implemented for system monitoring
Self-Monitoring Features
Compressed-air monitoring system

Material Compatibility


Density/particle size
0.5–2.5 g/cm³ / 50–1000 µm

Physical Characteristics


Compact,space-saving design
Yes
Machine footprint
Compact
Control panel type
Digital interface
Discharge method
Quick-Valve separation unit
Separation system
Venturi nozzle / Quick separating slide
Special designs
Up to 140°C bulk temperature capacity

Custom Options


Compact,space-saving design
Yes
Control panel type
Digital/Touchscreen
Integration capability
With various plastic processing machines
Adaptability
Adapter plates for different machines
Separation unit type
“Quick-Valve” separation unit
Temperature design capability
Up to 140°C
Custom placement buttons
Available