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Mica band heaters
Mica band heaters are widely used industrial heating elements for cylindrical surfaces such as extruder barrels, heads, and tanks. They consist of resistance wire or ribbon wound on mica insulation and enclosed in a stainless‑steel shell. The construction combines good heat transfer with a simple, durable design – ideal for mid‑temperature operation.
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Basic technical parameters
Power max
wg wytycznych klienta*
Voltage
wg wytycznych klienta*
Working Temp.
350°C*
Dimensions
⌀ 25-5000 mm*
Lenght
Width
20-250 mm*
Heater cross section:
Rectangular
Round
Thickness
ok. 5 mm*
*Requires consultation with our technical department.
Industries
Plastics industry
Chemical industry
Pharmacology/Pharmaceutical industry
Automotive industry
Footwear industry
Wood industry
Aerospace industry
Cosmetic industry
Food industry
Packaging industry
Electronics industry
Shipbuilding and offshore industry/Shipbuilding
Specification
Application
- Plastics industry – heating extruder cylinders, injection molding zones, nozzles and heads, heating pipes and conveying lines for granulate/melt.
- Chemical industry – heating process pipelines, tanks and agitators, maintaining viscosity of resins/adhesives/oils, heating dosing nozzles and valves.
- Pharmacology/Pharmaceutical industry – heating cylinders and dosing nozzles, heating media transfer pipes, stabilizing temperature of intermediates during filling.
- Automotive industry – heating pipelines for adhesives and sealants, application nozzles, mold inlets for plastic parts, maintaining temperature in rubber vulcanization molds.
- Footwear industry – heating pipelines with hot-melt adhesives, sleeves and molds for rubber/TPU elements, maintaining temperature at assembly stations.
- Wood industry – heating shafts and sleeves of veneer/laminate presses, heating pipelines with woodworking adhesives, stabilizing temperature of gluing rollers.
- Aerospace industry – heating pipelines with composite resins, inlets and sleeves of composite molds, maintaining temperature of structural adhesives.
- Cosmetic industry – heating pipes and dosing nozzles for creams/lotions, heating mixer inlets, stabilizing viscosity of cosmetic masses before filling.
- Food industry – heating cylinders in packaging machines, pipes and nozzles for chocolate/creams/sauces, maintaining temperature of tanks and filling nozzles.
- Packaging industry – heating sleeves and cylinders in film lines, heating nozzles/valves for adhesives, stabilizing temperature of sealing components.
- Textile industry – heating rollers and sleeves in textile laminating, heating elements in thermal transfer printing machines, stabilizing tunnel dryer temperatures (cylinder sections).
- Rubber Products Industry/Rubber Industry – heating vulcanization cylinders and sleeves, heating pipelines with rubber compound, stabilizing mold temperatures for seals.
- Paper industry – heating coating rolls, calender rollers, dosing nozzles for adhesives and starch, stabilizing coating systems temperature.
- Foundry industry – heating sleeves and cylinders of die-casting machines, heating melt feeding nozzles/inlets, maintaining temperature of molten metal transfer pipelines.
- Electronics industry – heating nozzles and sleeves in wire coating lines, heating inlets for resins/epoxies, stabilizing temperature in insulation application processes.
- Medical and laboratory technology – heating pipes and nozzles in machines forming medical components, heating dosing assemblies, stabilizing temperature of process media.
- Energy and power plants/Power industry – heating oil pipelines and turbine inlets, heating auxiliary steam lines, stabilizing temperature of hydraulic systems.
- Electroplating – external heating of electrolyte feed pipes, pump and valve housings, maintaining temperature of dosing inlets for baths (outside immersion zone).
- Paint and varnish industry – heating pipes and nozzles for paints/varnishes, sleeves in paint booths, stabilizing viscosity of media before spraying.
- Shipbuilding and offshore industry/Shipbuilding – heating pipes and inlets of fuel/lubrication systems, maintaining temperature of pumps and valves in engine rooms, heating pipelines with viscous media.
- Recycling industry (proposed) – heating cylinders of regranulators and agglomerators, heating conveying pipelines for secondary plastics, stabilizing temperature of dosing nozzles.
Heater Construction
Temperature sensor options:
- Thermocouple type J (up to 650°C)
- Thermocouple type K (up to 1000°C)
The specified temperature refers to the sensor’s maximum operating temperature, not the heater.
Additional option: An aluminum heat sink can be used with mica bands to operate in combined heat/cool sections.
Types of heaters
Current Outputs
- Leads
- Beaded leads (max lead length 300 mm)
- Beaded leads with bracket
- Chimney outlet: a) 90° b) 45°
- Flat‑tangent outlet
- Terminal block
- Terminal block in box
- Terminal block in vertical box
- Iron plug WG2, KCOO 2 A or B
- M5 stud terminals (A/B)
Heating Zones
Differences between ceramic and mica band heaters
| Ceramic | Mica band | |
|---|---|---|
| Max. temperature | 650 °C | 350 °C |
| Dimensional matching | Limited by ceramic segment size ±10 mm | ±2 mm |
| Surface power density | 10 W/cm² | 6 W/cm² |
| Installation | Can be opened and wrapped to cylinder diameter | No opening; slide axially along cylinder only |
| Flooding sensitivity | Very high | Medium |
| Thermal inertia | Medium | Very low |
| External insulation jacket | Yes | No |
| Mechanical robustness | Low | High |
| Holes/slots execution | Limited | Flexible |
Visualization of the construction of the heater
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