Contrex s.r.l.

GRAMETRO is a continuous loss-in-weight gravimetric dosing unit designed for extruder feeding and supervision, it manages the weight-per-meter ratio of the extruded material in a closed loop. A control algorithm supervises the haul-off speed in combination with the extruder, thereby keeping a constant quantity of extruded material for every linear meter also in multilayer applications.

• Consistent extrusion feeding
• Self-adapting
• Throughput control
• Quick start-up time
• Automatic calibration

Continuous loss-in-weight batch dosing unit

GRAMIXO is a gravimetric batch blender with an integrated loss in weight extrusion control, which can be used to manage up to eight components.  It features a removable inclined mixer and easy access openable transparent body panels. The dosing management system is integrated with the extruder screw, haul-off, and continous thickness control.  When used for bubble film applications the cooling ring can also be managed by GRAMIXO to further enhance performance and stability. GRAMIXO has been specifically designed for extrusion applications where gram per meter control is paramount.

• Multi-component
• Double eyelid shutter
• Removable inclined mixer
• Vibration immunity system
• Quick Recipe changes

Continuous loss in weight multi-component dosing system

GRAVICO is a continuous loss-in-weight multi-component dosing system equipped with an automatic weight/liner meter adjustment and designed for continuous cycle processing (film, pipes, profiles, mono and co-extruded sheet). This dosing system is designed for use with up to eight components for wide range of configurations.  GRAVICO is automatically managed by the NAVIGATOR 9000 control for automated management of the system production parameters including: cooling ring control, gauge control, extruder haul-off and extruder speed.

• Multi-component
• 4,000 weight samplings per second
• Self-adapting
• Vibration immunity
• Throughput control
• Quick start-up time and changeover

On-line thickness measurer on circular scanner

EAGLE SKY is a continuous thickness measurement device that makes a continuous circular movement around the bubble to perform fast thickness measurements.  This version of the EAGLE line performs a complete measurement of the bubble circumference in less than 50 seconds.  In combination with a Contrex automatic cooling ring, EAGLE SKY is able to maintain the thickness tolerance at lowest levels.

• Rapid and accurate measurement
• Compatible with different polymers
• Extremely low wear measurement
• Auto calibrating and cleaning features