Description

Mica band heater use good insulation property mica and heat-resistant property, mica sheet as support and insulation layer, stainless steel board as support protection shell.Mica band heater is the ideal solution for high watt densities and high operating temperature applications, these heaters are ideal for increasing output especially in injection molding and to meet the heating requirements to process newly engineered high tech resins.

Mica band heater transfer reliable high-temperature heat to cylindrical surface and available with different diameter and wattages.This band heater can perform at the high operating temperatures up to 900℉ and provide long,efficient service to industrial process such as plastic extruders ,injections.

The manufacturing for mica band heater of extruder requires careful control of three key aspects: circular accuracy, interface bonding, and weather resistance.

Operating conditions requirements:
Cylinder temperature: 180~200℃ (PVC plasticization temperature);
Environmental corrosion: HCl gas (concentration 50 ppm, pH = 2~3);
Vibration: Screw rotation speed 150 rpm, acceleration 3g.

Optimization plan
Material upgrade: The mica layer uses synthetic fluorogold mica (resistant to HCl corrosion, insulation resistance > 10¹² Ω after 500 hours); the resistance wire selects FeCr25Al5 + glass fiber coating (vibration life > 8000 hours);

Structural optimization: The annular heating band is designed with two mica layers offset by 90°, filled with BN thermal conductive adhesive (temperature difference on the inner wall of the barrel ±2℃); flange type fixation + silicone rubber elastic gasket (vibration amplitude reduced by 60%);

Control strategy: Integrated PID + feedforward control (adjust power according to screw rotation speed), steady-state temperature fluctuation ±1.5℃, energy consumption reduced by 18%.

Application effect

The lifespan of the mica band heater of extruder has been extended from 6,000 hours to 15,000 hours;

The longitudinal wall thickness deviation of the pipe material has been reduced from ±5% to ±2%;

The annual maintenance cost has been decreased by 40% (by reducing the replacement frequency).

The performance optimization for the mica band heater of the extruder requires a deep integration of three technical points: material weather resistance, structural vibration resistance, and thermal uniformity.

Research shows that by combining synthetic fluorine-gold mica + FeCr25Al5 resistance wire + variable pitch winding, the corrosion resistance can be increased by 50% and the vibration life can be extended to over 8,000 hours; combined with the misalignment of double mica layers and BN thermal conductive adhesive filling, the radial temperature difference of the barrel can be controlled within ±2℃, meeting the requirements for high-precision extrusion. In the future, with the introduction of intelligent sensing and composite materials, the extruder band heater will be upgraded towards "high reliability, long life, and self-diagnosis", providing key support for the efficient and green production in the plastic processing industry.

Various types of terminals and power outlets

product-2000-1334

product-2000-1334

Data Sheet

Band Voltage	120V 220V 230V 240V 480V etc (under customer request)
Max working temperature	550 degree celsius
Resistance Wire Type	NiCr 80/20
Sheath Material	304 stainless steel
Insulation Material	Mica/ceramic
Band Construction	One-piece or Two-Piece
Gap Locking Mechanism Type	Flange, Barrel Nuts or None
Lead Exit Position	Standard or Customized
Termination Style	Standard lead, Screw terminal; 2-Pin Euro Plug or 3-Pin Euro Plug
Holes availability	Customer- Design
Notches availability	Customer- Design

High temperature quick disconnects are simple,safe and quick way to apply power to a band heater installation.The combination of plug and cup assemblu along with stainless steel armor cable or stainless steel wire braid eliminated all live exposed terminals or wiring that can be a potential hazard

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