WATLOW Mineral Insulated Nozzle Heaters


Watlow offers a full line of hot runner nozzle heaters for the plastics industry as well as slip-on heaters for the medical and analytical industries. While every heater has a unique set of capabilities, each nozzle heater is designed to meet specific application requirements. Whether an application requires high performance, high temperature or high watt density Watlow has the heater to fit the application.

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Product Description

Product Description

The MI nozzle heater from Watlow® is a high-performance heater. The nozzle heater’s performance and name are derived from Watlow’s exclusive mineral insulation—a material with a much higher thermal conductivity than mica and hard ceramic insulators used in conventional heaters.

A thin layer of the “high” thermal conductive MI material is used to electrically insulate the element wire from the inside diameter of the heater sheath. A thicker, “low” thermal conductivity layer backs up the element wire, directing the heat inward toward the heated part. The result is more efficient heat transfer—a performance solution lowering element wire temperatures and increasing heater life.

Specification

Specification

Material Maximum Operating Temperatures Maximum Watt Densities
°F °C W/in2 W/cm2
Stainless steel 1400 760 230 35.6
  • Maximum voltage to 240V
  • Heater operating temperatures to 1400°F (760°C)
  • Watt densities to 230 W/in² (35.6 W/cm²) available on small diameter nozzle nozzles
  • Applications

    Applications

  • Extruders
  • Blown film dies
  • Injection molding machines
  • Other cylinder heating applications
  • Features & Benefits

    Features & Benefits

    Features Benefits
    Operating temperatures to 1400°F (760°C)
  • Melts resins such as PEEK®, Teflon®, Ultem® and Zytel® safely
  • Higher watt densities
  • Contributes to faster heat-up and throughput for increased productivity
  • High thermal conductivity of MI and low mass construction
  • Provides an almost instant response to temperature control
  • Eliminates thermal lag and temperature overshoot
  • Stainless steel cover and side fold design
  • Resists contamination by overflow of plastic or other free-flowing materials
  • Permanently attached clamp bars
  • Eliminates cumbersome clamping straps, making installation easier
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