The Watlow MI band heater is a high performance band heater developed to meet the need for
higher watt densities, operating temperatures, and greater efficiencies today's technology demands.
The performance and name of the Watlow MI band heater are derived from Watlow's exclusive
mineral insulation - a material that has much higher thermal conductivity than the mica and hard
ceramic insulators used in conventional heaters. The design of the Watlow MI band heater reduces
the backside temperature resulting in improved clamping, better heat transfer, and, ultimately,
higher thermal efficiency.
The Watlow MI band heater is constructed with a thin layer of high thermal conductivity MI material
that separates the element wire from the inside diameter sheath. A thicker, lower thermal
conductivity layer backs up the element wire to direct the heat inward towards the barrel. This
special construction promotes longer life of the Watlow MI band heater because the sheath can
operate at high temperatures with low internal wire temperatures.
The Watlow MI band heater is formed before the leads or post terminals are attached so they do
not interfere with the curving process. The result is an exceptionally round heater that fits the
barrel tightly and conducts its heat uniformly with minimal hot spots.
The Watlow MI band heater has extremely even heat distribution. Stainless steel clamping bars
help contribute to even heat because the bars extend the full width of the Watlow MI band heater
for clamping uniformity around the barrel.
The Watlow MI band heater will withstand shock, vibration, and plastic drool. Side folds are
positioned on the inside diameter of the band to resist contaminants from entering the Watlow MI
band heater and causing premature failure.
With performance temperatures reaching 760°C (1400°F), watt densities up to 35.65
W/cm2 (230 W/in2), uniform heat distribution, and more efficient and
higher performance, Watlow MI band heaters are the ideal choice for plastics processing equipment.
Applications for the Watlow MI Band Heater
- Extruders
- Blown film dies
- Injection molding machines
- Other cylinder heating applications
Ordering Information
Please contact us to order a Watlow MI band heater. To help us determine which Watlow heater
will best satisfy your application requirements, please determine as closely as possible the
diameter, width, watts, voltage, clamping, terminal option, and lead length of the heater you
will need. Please consult the Watlow MI Band Heater
Data Sheet PDF for additional information.
