film extrusion lines – German Translation – Keybot Dictionary

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This module allows for easy integration of customer supplied components such as vacuum feeders, gravimetric systems, chillers, draws, winders, etc. … into VAREX blown film extrusion lines.
Die steuerungstechnische Einbindung von Fremdkomponenten wie Saugförderer, Gravimetrik, Kühlaggregate, Vorzüge, Wickler usw. in VAREX-Blasfolienanlagen ist mit dem XTENSION-Modul problemlos möglich.
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Nevertheless, the CeDo Group, which is based in the English town of Telford and is regarded as one of the European market leaders for bin liners and garbage bags, uses exclusively recycled material in its blown film extrusion lines.
Blasgeformte Folien sind anspruchsvolle Produkte, wodurch der Einsatz von Recyclingware zu ihrer Herstellung eine große Herausforderung darstellt. Verunreinigungen im Eingangsmaterial führen zwangsläufig zu Produktionsfehlern, die von Stippen und kleinen Fehlstellen im Schlauch bis hin zu Produktionsunterbrechungen reichen können. Trotzdem setzt die CeDo-Gruppe, die ihren Stammsitz im britischen Telford hat und als einer der europäischen Marktführer für Müllbeutel gilt, ausschließlich Recyclingware in ihren Blasfolienextrusionsanlagen ein. Und zwar aus Überzeugung. „Wir geben dem Kunststoff eine echte zweite Chance“, formuliert Ton Emans, Geschäftsführer der Recyclingsparte im niederländischen Geleen. „Das funktioniert nur deshalb so gut, weil wir genau wissen wie Kunststoffe aufzubereiten sind.“ Schlüssel zum Erfolg stellt die korrekte Waschtechnik dar und deshalb kaufte CeDo Recycling kürzlich eine Komplettanlage beim Waschanlagen-Experten Lindner washTech in Großbottwar.
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In a system made up of 3 plastic film extrusion lines (the illustration shows just one of the 3 lines), the quantity of hot additive to be mixed with the PVC to be extruded had to be controlled, bearing in mind the quantity set by the operator and the extrusion speed.
In a system made up of 3 plastic film extrusion lines (the illustration shows just one of the 3 lines), the quantity of hot additive to be mixed with the PVC to be extruded had to be controlled, bearing in mind the quantity set by the operator and the extrusion speed. For reasons of precision, the amount of additive really dispensed also had to be controlled, compensating the speed of the pump and managing any flow alarms if compensation was not possible. Alarms from the extrusion line and from the additive containment tank also had to be managed, displaying all the anomalies and operating options on the operator panel. The meter used is the gear type with encoder. The speed of the additive pump is adjustable with a standard analogue signal 0-10V. The speed of the extrusion line is given by a standard analogue signal 0-10V. Solution: the system was fulfilled using an electronic section repeated for each of the 3 extrusion lines. Each section consists of an MC-PLC board, combined with an interface with analogue output 0-10V, capable of managing the line and controlling all the signals. The speed of the pump is set considering the data bound to the speed of the extrusion line and the quantity of additive requested and obtaining the rpm from the graph „Flow dispensed = f (rotation speed) „related to the pump, saved in the MC-PLC board. While the system operates, any differences between the theoretic quantity of additive and that really dispensed are compensated by increasing or reducing the rotation speed of the pump. The use of the serial line RS485, suitable for managing a network, enabled the 3 lines to be centralized in one single operator panel. The MC-PLC board, thanks to its numerous peripheral points and its large memory, is able to economically resolve many problems which would be difficult to resolve with other systems.