Pelletizing of 84 strands at 5 tonnes/hour

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  • Coperion launches strand conveyance system for pelletizing at high throughput rates
  • Flexible adaptation to actual processing task
  • Integrated strand monitoring device helps to maintain high take-off speeds

Coperion Pelletizing Technology GmbH has developed an automatic strand conveyance system (ASC) for the pelletizing at extremely high throughput rates. Designed to work in conjunction with the company’s two large strand pelletizers, the SP 500 HD (working width 500 mm) and the SP 700 HD (700 mm), this conveyance system is available in two sizes: the ASC 500 for throughput rates of up to 3.5 tonnes/hour and the ASC 700 for up to 5 tonnes/hour.

Possible machine malfunctions caused by broken strands are avoided

The conveyance system automatically guides the extruded strands via a cooling water chute and downstream conveyor belt into the feed mechanism of the pelletizer. An automatic start-up mechanism facilitates the start-up operation, while any possible machine malfunctions caused by broken strands are avoided by the system’s ability to rethread the strands.

Focus on high throughput rates

The new SK92 die head has been developed specially for high throughput rates. Homogeneous heating/cooling ensures completely uniform extrusion of the strands across the entire width of the extrusion die. Optimum rheology and efficient heat transfer of the die head enable high throughput rates while ensuring gentle handling of the product. This feature complements the increased throughput capabilities of the ZSK Mc18 extruder series.

Pelletizing head

Coperion’s new SK92 die head has been specially developed for high throughput rates (source: Coperion)

Flexible adaptation to actual processing task

The ASC automatic strand conveyance system allows flexible and rapid adaptation to the actual processing task. If, for example, the extruded material requires more intensive cooling, the strands, after being cooled in the water chute, can be additionally spray-cooled with cold water on the downstream perforated conveyor. The spray bars used for this purpose can be turned on and off individually and can be readily exchanged during regular maintenance operations.

Freely positionable suction stations in the conveyor system generate streams of air that free the strands from adhering water. This postcooling facility may, if required, be converted to an intensive cooling section.

Pelletizing conveyance system

The new ASC automatic strand conveyance system from Coperion is designed both for a wide range of materials and for the fully automatic operation of high-throughput extrusion lines (source: Coperion Pelletizing Technology GmbH)

Integrated strand monitoring device helps to maintain high take-off speeds

Coperion’s new automatic strand conveyance system may be used for a wide range of materials. It is equipped as standard with a vertical adjustment permitting different points of strand placement on the water chute depending on the material being processed. An integrated strand monitoring device helps to maintain high take-off speeds in conjunction with a high
number of strands and hence high throughput rates in fully automatic operation. If combined with a Coperion extruder , the strand conveyance control into thepermits can be directly integrated into the control system of the extruder.

Coperion’s new SK92 die head has been specially developed for high throughput rates (source: Coperion)

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