Backer Marathon Call Us Today 1-830-775-1417

Starflex Band Heaters

The Backer Marathon Starflex band heater is an extruded aluminum segmented band employing rugged refractory insulated tubular heating elements. The low expansion clamping band provides snug barrel fit and and assures excellent heat transfer through the entire operating temperature range up to maximum heater temperatures of 600°F. This band heater enjoys wide acceptance because of extremely long and reliable life characteristics. Operators of plastic extruders and injection molders experience minimum down-time with the Starflex band. It is also one of the most efficient band heaters available.

Some applications require both heating and cooling. With the advent of exothermic materials and heat generated by screw rotation, the proven Backer Marathon Starflex band heater was adapted to provide both heating and cooling functions. Cooling tubes are placed in proximity to the heating elements to produce the Backer Marathon Starflex Heat/Cool band. Due to its low mass, it can be cooled relatively quickly.

We also manufacture cool only bands in a configuration similar to the Heat/Cool band. Cool only bands are manufactured with stainless steel tubes to meet a wider range of temperatures. 

Construction

 

Starflex heaters are manufactured by hydraulically pressing a high temperature heating element into a precision grooved aluminum channel. The heaters are clamped in place with low expansion stainless steel straps for intimate contact with the part. The aluminum channel offers low mass and high thermal conductivity for fast heat up. These same characteristics provide excellent cool down properties as well, which is why Starflex bands are also available with water cooling, both as a cool only band and a heat/cool band.

Standard Starflex Band Heater Specifications

Maximum Operating Temperature 650°F
Maximum Voltage 277 Volts Per Half
Maximum Amps 30 Amps
Wattage Tolerance +5%, -10%
Maximum Recommended Watt Density 40 Watts Per Square Inch
Maximum Diameter 10 Feet 

 

Available Options Per Width
Starflex Heater Width Minimum Diameter Cooling Only Optoin Heat/Cool Option

Optional TC Hole Size

.75" 3.50" Yes No N/A
1.50" 3.50" Yes No .37"
2.50" 5 No No .50"
3" 5 Yes Yes .50"
4" 5 Yes Yes .50"

 

Applications

Backer Marathon Starflex band heaters are designed for use in barrel heating of extrusion and injection molding machinery, blown film dies and other cylindrical surfaces. Their configuration can be full for 360° coverage or any degree of partial warp. Internal bands to heat from the inside-out are also available.

Some applications require both heating and cooling. With the advent of exothermic materials and heat generated by screw rotation, the proven Backer Marathon Starflex band heater was adapted to provide both heating and cooling functions. Cooling tubes are placed in proximity to the heating elements to produce the Backer Marathon Starflex Heat/Cool band. Due to its low mass, it can be cooled relatively quickly.

Options

Image Not Available

I.D. Heaters

  • Inside diameter heaters (reverse construction)

 

Starflex with terminal box

Terminal Box

  • Terminal boxes are excellent for preventing electrical shock or electrical shorts.
  • Terminals boxes are available on any clamping or construction style.
  • 1.5" wide x 2.25" long x 1.87" deep.
Heat and Cool Starflex Heater

Heat/Cool Bands

  • Heat and cool with the same element. Our special heat / cool band enables you to circulate the refrigerant of your choice through the capillary tubes around the heater.
  • Heater and stainless steel cooling tubes.
Image Not Available

Cool Only Bands

  • Marathon also manufactures cool only bands in a configuration similar to the Heat/Cool band.
  •  Cool only bands are manufactured with stainless steel tubes to meet a wider range of temperatures. 
  • 5/16 diameter stainless steel coolant tubes for long life.

 

Installation

Installation of these bands is easily performed by opening the band, placing it around the cylinder and tightening a single screw. Large diameter bands are furnished with multiple clamping assemblies and multiple segments from grasping the surface.

Starflex Band Heater Terminations

Image Not Available

N2

  • screw terminations

 

Image Not Available

L1

  • fiberglass leads

 

Starflex Heater with Braided Leads

B1

  • braided leads