Band and Nozzle Heaters
Led by the high performance MI (mineral insulated) Band heater, the patented, flexible THINBAND® heater and the standard mica band heater for specialized constructions, Watlow's band and nozzle heaters are ideal for every type of plastics processing equipment.
| Sheath Material | Typical Maximum Watt Densities |
Maximum Operating Temperatures |
|
|---|---|---|---|
| W/cm2 | W/in2 | ||
| Stainless steel with mica insulation | 8.5 | 55 | 540°C (1000°F) |
| Stainless steel with mineral insulation Nozzle Barrel |
35.7 15.5 |
230 100 |
760°C (1400°F) |
| Aluminized or zinc steel with mica insulation | 8.5 | 55 | 480°C (900°F) |
Applications
- Extruders
- Blown film dies
- Injection molding machines
- Other cylinder heating applications
Ceramic Knuckle Heaters
Ceramic knuckle band heaters are designed to provide high-performance heating at temperatures up to 760°C (1400°F). This level of performance is achieved from the ceramic knuckles that provide excellent insulation and long heater life.
The construction of the ceramic knuckle heater includes interlocking ceramic blocks with resistance wires threaded through holes in the ceramic. This method provides superior heat distribution across the band, resulting in an uniformly heated surface. Ceramic knuckle heaters are specifically engineered and manufactured with three layers:
- Aluminized steel sheath layer - improves mechanical protection to heater and resists corrosion.
- Ceramic fiber layer - provides thermal insulation, energy conservation and minimizes heat loss.
- Ceramic knuckle layer - provides mechanical protection and electrical insulation to the resistance element, which increases heater life and conducts or radiates the heat to the surface.
Specifications
- Diameter: 50.8 mm (2 in.) to 381.0 mm (15 in.)
- Width: 38.1 mm (11/2 in.) to 254 mm (10 in.)
- Thickness: 12.7 mm (1/2 in.)
- Sheath: Aluminized steel (stainless steel optional)
Watlow manufactures a variety of band and nozzle heaters including barrel heaters, mineral insulated band heaters and ceramic knuckle band heaters. For more information about band and nozzle heaters, please contact your local Watlow representative.
Related Literature, News and Downloads
Click on the below links for more product information. PDF documents require Adobe® Reader® version 7 or higher for viewing.
| Specification Sheets & Brochures | Size/Pages |
|---|---|
| Mineral Insulated Lead Wire | 55K / 2 (PDF) |
| THINBAND Universal Stock Heaters. | 67K / 1 (PDF) |
| Quick Clamp | 79K / 1 (PDF) |
| Special Mica Barrel & Nozzle | 263K / 5 (PDF) |
| Barrel Heaters | 639K / 2 (PDF) |
| HV Nozzle Heaters | 71K / 2 (PDF) |
| Fuel Cell Thermal Technology | 67K / 2 (PDF) |
| Moisture Resistant MI Band Heaters | 81K / 2 (PDF) |
| Ceramic Knuckle Heaters | 138K / 4 (PDF) |
| MI Barrel and Nozzle | 141K / 3 (PDF) |
| EHG SL10 Process Controller and Safety Limit | 2,037K / 4 (PDF) |
| Complete Thermal System Solutions for Plastics Processing | 3,509K / 12 (PDF) |
| Related News Releases and Newsletters | Date |
|---|---|
| Watlow's MI Band Heaters Provide the High Temperatures and Watt Densities ... | 19-Jun-2006 |
| Watts Current - Volume Twenty-Two, Second Quarter, 2000 | 01-Apr-2000 |
| Watts Current - Volume Twenty-One, First Quarter, 2000 | 02-Jan-2000 |
| Watts Current - Volume Twenty, Third Quarter, 1999 | 03-Jul-1999 |
| Watts Current - Volume Fourteen, First Quarter 1998 | 02-Jan-1998 |
| Watts Current - Volume Thirteen, Fourth Quarter 1997 | 03-Oct-1997 |
PDF documents require Adobe® Reader® version 7 or higher for viewing.
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