WALZEN IRLE GmbH

Hüttenweg 5

http://www.walzenirle.com

+49 2737 504-0

The impulse to apply the S-technology was initiated by the target to achieve profile optimisation and better heat transfer of high load thermal rolls in plastic calenders. The roll type DuoThermS® based upon the flow through principle "Duopass", but furthermore it has a helix in the peripheral borings. The helix gives the heating medium a twisted flow, which balances out the loss in temperature over the roll width. The twisted flow has a positive effect on the heat transfer between the heating medium and the inner wall of the peripheral boring. The use of a helix with a continuously reduced increase in the flow direction allows, for the first time, the temperature loss to be balanced out, without influencing the roll fluid pressure parameters considerably. Therefore this technology has a positive effect on the geometrical shape of the roll. The roll type DuoTherm S® can also be operated with reduced volume flow, without having to make significant concessions on the profile quality. Even better results can be achieved using the roll type MonoTherm S®, a roll which is flown through by the Monopass-system and which is equipped with helix applications to compensate the axial temperature differences. The roll types MonoTherm S® and DuoTherm S®, developed by WALZEN IRLE, offer enough potential to fulfil the requirements of a modern plastic calender. The WALZEN IRLE identification of the thermal rolls with s-technology are: MonoTherm S® DuoTherm S® The thermal roll identification MonoTherm S® 200 reproduces the flow through principle Monopass, the application of the s-technology and the roll surface temperature of 200°C.