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.
Specifications:
| 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:
- Extruders
- Blown film dies
- Injection molding machines
- Other cylinder heating applications
Features & Benefits:
| Features | Benefits |
|---|---|
| Operating temperatures to 1400°F (760°C) |
|
| Higher watt densities |
|
| High thermal conductivity of MI and low mass construction |
|
| Stainless steel cover and side fold design |
|
| Permanently attached clamp bars |
|
| Mineral Insulated Nozzle Heaters |
| Complete Thermal System Solutions for Plastics Processing |
| ISO 9001:2008 (Exp. 2018) St. Louis |
| Heater Catalog (Complete – .pdf) |
| Heater Catalog (Section) – Heater Reference Data |
| Heater Catalog (Section) – Nozzle Heaters |
