Barrel Heaters - Hasmak.com.tr

W A T L O WHot RunnerNozzle <strong>Heaters</strong>Thick Film NozzleBecause the hot runner nozzle is thefinal melt path between the manifoldand the gate area, temperatureuniformity is critical to avoiddifferences in melt viscosity.Whether it’s hot spots causingthermal degradation of the plastic,or cold spots causing flow restrictions,both affect the final part quality andconsistency from shot to shot.Watlow’s innovative thick filmheating technology provides theinjection molding industry with apatented (U.S. patent number5,973,296) high-performance, lowprofile hot runner nozzle heater. Thedirect surface contact of the thickfilm material to the cylindricalstainless steel sleeve createsoptimal heat transfer while the nonporousglass film prevents moistureabsorption resulting in dielectricfailure in other heaters.Watlow has also developed a thickfilm nozzle heater configured witha low-profile, protective metallicoversleeve. This metal sleeve allowsfor internal lead terminations resultingin a heater thickness unmatched inthe marketplace. It also providesadditional protection of the dielectricglass material as well as furtherimproving mechanical resistanceand enhanced thermal efficiency bydirecting more heat transfer throughthe heater substrate directly into thenozzle itself. This added heat transfer(or reduced heat loss to the outside)results in a more efficient heater andoverall less energy consumption.Consult factory for more details onthe metallic oversleeve option.(U.S. patent number 6,410,894)Layers OfDielectricGlassSubstrateMaterialFeatures and Benefits• Uniform thermal profile andability to pattern heater layoutresults in uniform melttemperature for equal cavity fillingand improved part quality;eliminates hot and cold spots.• Low thermal mass allowsquicker heat up and less thermallag between the heater and thenozzle.• Extremely low radial profileallows closer pitch – center-tocenterdistance – betweennozzles for higher nozzle densityand more parts per mold.DielectricOverglazeCustom-DesignedResistor Circuit• Moisture-resistant non-porousglass film constructioneliminates need for soft starting,minimizes current leakage andultimately reduces cost byeliminating special need of GFCIprotection.Agency Approvals• UL ® , CSA and CERobust industrial heaters• Designed to operate in24 x 7 x 365 hour applications.Operating temperature• Able to run heaters up to 500˚C(932˚F).Injection MoldingHot Runner Nozzle <strong>Heaters</strong>127