machinery feature | Screws & barrels Molybdenum
coating helps to prolong screw life in Batten- feld-Cincin- nati’s ConEx
series of conical twin-screw extruders
Heat is on
A heating system from Nordson Xaloy can replace conventional heater bands with an effi cient heater coating, to maintain melt uniformity in extrusion melt pipes and adapters. SmartHeat was originally devel- oped as an injection barrel coating, and has since been adapted for use in extrusion. Melt pipes and adapters – which
transfer molten polymer from the extruder to downstream equipment – can cover considerable distance, making it diffi cult to maintain melt uniformity. Replacing band heaters with the continuous coating of the
Nordson’s
SmartHeat is a heater coating that can boost melt uniformity in melt pipes
SmartHeat system ensures a consistent tempera- ture over extended lengths, says the company. SmartHeat comprises two layers of plasma- sprayed metallised ceramic with a nichrome wire wrap sandwiched in between, plus a thermal insulation cover. Heat from the wires is conducted throughout the ceramic material, meaning that the system raises the temperature of a machine component to target levels more quickly than with band heaters, maintains it more uniformly and uses less energy.
The tightly strapped thermal insulation wrap over
the ceramic coating virtually eliminates heat losses to the workplace, saving on air conditioning costs and reducing the risk of operator injury.
“SmartHeat is 25-60% more energy-effi cient than
band heaters, and as a continuous coating it distributes heat more uniformly – a crucial advantage for any melt pipe or barrel,” said David Hotchkiss, global product manager for Nordson Xaloy. “Since all SmartHeat wiring is run underneath the thermal insulation, it eliminates the hazard of having numerous exposed wires connected to multiple heater bands.” Nordson Xaloy will showcase SmartHeat at Chinap-
las, along with a number of other related products including: four barrels and a twin barrel section; a complete screw and barrel set, including tipset; and seven extrusion screws.
Click on the links for more information:
www.kraussmaffei.com
www.battenfeld-cincinnati.com
www.nordsonxaloy.com
the snow of today is the water of tomorrow for the water of tomorrow – pipes are needed
CONEXTRU GmbH supplies pipe head technology and
production systems for the pipes of tomorrow
first internet dealer for pipe heads
www.conextru.eu
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