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Extrusion control	Back
The basis of all our automation principles for extrusion lines over the last 28 years is centred on gravimetric extrusion control. By using the "loss in weight" principle, a precise throughput measurement is guaranteed, independent of bulk density. Especially for coextrusion lines, no other control principle for layer control is worth considering - without nominal thickness control nothing else is constant.
With the modular contruction, up to 6 dosing units per extruder can be connected. The precise dosing of expensive additives and masterbatches according the recipe is realised directly above the extruder throat - eleminating the problems of demixing and inconsistent homogenisation associated with paddle blenders. All dosing units are adjusted in a synchronized manner with the extruder in order to guarantee an accurate recipe. The latest generation of dosing unit now incorporates a high torque motor delivering a wide speed range making screw change superfluous. Intelligent software control guarantees a constant low volume dosing directly on the extrusion line without loss in accuracy. The basic systems GT3 and GDC can also be combined with width measurement and control as well as a wide range of software options.
Advantage: Independent from bulk density Fast order change Rigid construction Precise dosing of small volumes Easy operation and simple target entry Customer tailored solutions Up to 7 components per extruder No dosing screw change necessary Easy cleaning due to removable hoppers