Mica Band Heater

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Mica Band Heater

Mica band heaters offer efficient and economical solutions for heating cylindrical surfaces that require external indirect heating. They are ideal solution for high watt density and high temperature application. It uses
nickel chromium resistance strip as heating element which is precisely wound on a dielectric material for even heat distribution. The heating element is insulated within a mica core enclosed in a metal sheath which provides exceptional insulation, dielectric strength and
heat transfer capability for faster heat up and longer heater life.

About Mica Band Heater

Heaters can incorporate various sized holes and cut-outs and are customizable for various dimensions, wattages, voltages and materials to suit different applications requirements. Mica band heaters can also accommodate built in thermocouple which helps in contorlling temperature more accurately. Thermocouples can be type “J” or type “K”, grounded or ungrounded.

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Advantages

Various shape options in mica strip heater
Good lifetime
Low cost
Reasonably high temp
Good efficiency
Less in thickness

Applications

Plastic Injection, Extrusion
and Moulding Processes
Oil Lubricating Unit
Plastic Processing Industry,
Chemical Industries
Food Processing Industries
External Tank & Vessel
Blown Film Dies

Sheath MaterialStainless Steel, Galvanized
Iron

Max Sheath Temp.	425 °C
Voltage	120 V & 240 V, single phase, 2 phase and 3 phases
Watt density	up to 45w/in2
Minimum diameter	2”
Minimum width	1”
Wattage tolerance	+5%, -10%
Resistance tolerance	+10%, -5%

Construction

SS/Aluminised Sheath for good thermal conductivity and oxidation/corrosion resistance at elevated temperatures
Mica Insulation provides excellent electrical insulation and resistant to moisture.
Clamping Band designed to maintain clamping pressure and firm contact with the cylinder surface thus eliminating air gaps at the contact
Nickel Chromium Resistance Strip evenly wound for uniform heat distribution and reliable accuracy.
Terminal Box to provide protection against exposed terminals and helps guard terminals from spill over’s, dripping.
Lead Protection is available where abrasion is a problem.
Stainless Steel screw terminals for maximum amperage carrying capacity and firm connection with the winding.

Fibreglass Lead & Stainless Steel Braid terminations

Order Type L1/B1

Leads exiting both sides of gap are standard unless otherwise specified.
High temperature fiberglass leads are rated to 455°C.
Standard lead length is 10”

Order Type L4/B4

Leads may exit at right angle out of cap from any position on the heater.
1.5” of sleeve protection is standard.

Order Type L2/B2

Lead wires exiting 180 degrees from gap are common on nozzle
heater applications.
1.5” of sleeve protection is standard on lead exits

Order Type L5/B5

Lead wires on one side of
gap are available on any construction.
Common exit for small band heaters.
Standard gap is .300”

Order Type L3/B3

Leads exiting straight out the side are available on any construction.
Leads exit through a brass eyelet

Order Type L6/B6

Stainless steel spring provides extra support, protecting leads from sharp bends

Special Constructions

Two Piece

Two piece construction is available for easy installation and removal.
Please specify total wattage when ordering
Min. I.D. 3

Euro Plug

European type plugs are available upon request.
1” x 1.75” x 1”

Terminal Box

Terminal boxes are excellent for preventing electrical shock or electrical shorts. Terminals boxes are available on any clamping or construction style.

Expandable

Expandable Mica Heaters allow you to open the heaters to the diameters of the barrel for easy installation.
Min. I.D. 3”
Heaters should only be
opened all the way one time.

Holes

Band Heaters can be manufactured with custom holes or slots for thermocouples or special mounting needs.
Minimum of 1/2” is required from the hole to the edge of the heater.

Box

Box or rectangular heaters are efficient for heating dies on plastic extruders or the barrels of twin extruders.
They can be manufactured in one or two piece construction.

Mica Band Heater

Mica Band Heater

About Mica Band Heater

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