Extrusion International 2-2025

47 Extrusion International 2/2025 sion. The reason for this is that these polymers are very sensitive to degra- dation by hydrolysis, which leads to considerable uctuations in intrinsic viscosity (IV) and makes them un- processable. After polymer prepara- tion, FET uses a specially developed combination of extruder and screw to extrude the molten material un- der an inert atmosphere to achieve the desired product properties. Material preparation and supply With regard to the peripheral sys- tems for material preparation and supply, the variety of materials poses a particular challenge, which Motan- Colortronic LTD, Chester eld, part of the Motan Group, Constance, has risen to. Depending on the applica- tion, for example, small dryers for low throughputs or drying systems with dew point and air volume con- trol are used. The material is also supplied automatically with a conveyor system or manually, depending on re- quirements. If aggregates are required, gravimetric dos- ing and mixing systems are also used. All these components must be optimally se- lected and coordinated for the respective requirements and for the overall process. FET attaches great importance to using standard components wherever possible to ensure trouble-free and safe operation. For low throughputs, such as in labora- tory or small pilot plants, the dryer is usu- ally set up separately. Drying then takes place in batches. In this case, the dried material is transported contamination- free to the extruder in hermetically in- sulated glass containers from the Motan portfolio. For this purpose, FET has devel- oped a special quick-lock system that is adapted to the standard glass containers. Fibre Extrusion Technology Limited Units F & G Tree eld Industrial Estate, Gelderd Road, Leeds, LS27 7JU, United Kingdom www.fetuk.com motan gmbh Otto-Hahn-Str. 14, 61381 Friedrichsdorf, Germany www.motan-group.com Motan Colortronic UK Ltd Matilda House, Carrwood Road, Chester eld, Derbyshire, S41 9QB, United Kingdom www.motan-colortronic.co.uk MEASUREMENT TECHNOLOGY Picture 7: Small dryer from the motan LUXOR series, which is used for small throughputs (©motan) f.l.t.r. Karl Miller (CEO Motan Colortronic U.K. Ltd), Richard Slack (CEO Fibre Extrusion Technology LTD, Jochen Freier (Sales Director Export motan gmbh) (©motan)