EoW November 2007

english technology news

New addition to range at Rosendahl Rosendahl has developed a new addition to its Rocomat series – the Rocomat 5L, especially designed for the processing of flame retardant materials. The innovation features the possibility of an increased output quantity, eg 400l/h PVC, which is being mastered by the same system. The Rocomat 5L is developed with the same design as the preceding model, with a rotating shaft in the crosshead. The crosshead is designed in a larger format with deeper channels in order to reduce the pressure build-up. A shorter extruder adaptor favours the flame retardant materials, since the colour change takes place inside the shaft, which requires that only the mass within the distributor shaft needs to be rinsed. Additionally, this process results in minor colour change lengths for the flame retardant materials. This gives the possibility to purge the unused extruder or to use this extruder for an inner skin layer. The colour change shaft is also used to realise the bypass function on all extruders. This unique solution is applicable in any Rosendahl automotive line.

Rosendahl – increasing output quantity

▲

Rosendahl Maschinen GmbH – Austria Fax : +43 3113 510059 Email : office@rosendahlaustria.com Website : www.rosendahlaustria.com

Some processes are: change of layer, which requires two extruders, skin or strip change – three extruders as well as layer and strip changes which requires four extruders.

43

EuroWire – November 2007