User Manual

10
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*Resistance density varies with the size of the heater (higher density possible with smaller heaters).
Material Temperature
range
Max. size Max. resistance
density*
Comments
Polyimide/WA
Polyimide film with
thermosetting acrylic
adhesive (not UL
recognized)
-200 to 150°C
-328 to 302°F
560 mm × 1825 mm
22” × 72”
230
Ω/cm²
1500
Ω/in²
Similar to Polyimide/FEP except lower
cost, higher resistance densities, and lower
temperature range. WA is preferred over FEP for
most custom designs under 150°C.
Polyimide/ULA
Polyimide film with UL
recognized thermosetting
acrylic adhesive
-200 to 150°C
-328 to 302°F
560 mm × 1825 mm
22” × 72”
230
Ω/cm²
1500
Ω/in²
Similar to Polyimide/WA except UL recognized
(UL94V-0).
All-Polyimide (AP)
Polyimide film with
polyimide adhesive
-200 to 260°C
-328 to 500°F
560 mm × 1145 mm
22” × 45”
230
Ω/cm²
1500
Ω/in²
Higher temperatures and watt densities
than industry standard flexible Polyimide
construction.
PTFE
Teflon film with Teflon
adhesive
-200 to 260°C
-328 to 500°F
254 mm × 1016 mm
10” × 40”
70
Ω/cm²
450
Ω/in²
Fully sealed construction suitable for immersion
in acids, bases, and other corrosive chemicals.
Polyimide/FEP Silicone Rubber Mica Optical Grade Polyester
Heater Insulations
Compare the insulations Minco uses in its heaters
Polyimide/WA Polyimide/ULA All-Polyimide (AP) PTFE
Material Temperature range Max. size Max. resistance
density*
Comments
Polyimide/FEP
Polymide film with teflon
adhesive
-200 to 200°C
-328 to 392°F
560 mm × 1065 mm
22” × 42”
70 Ω/cm²
450 Ω/in²
See technical specifications on pages
22-24.
Silicone rubber
Rubber film with rubber
adhesive
-45 to 235°C
-49 to 455°F
560 mm × 2285 mm
22” × 90”
31 Ω/cm²
200 Ω/in²
See technical specifications on pages
25-26 (foil) and pages 27-28 (wire-
wound)
Mica
Mica insulation with
temporary binder
-150 to 600°C
-238 to 1112°F
560 mm × 1168 mm
22” × 46”
3.9 Ω/cm²
25 Ω/in²
See technical specifications on pages
19-22.
Optical grade polyester
Polyester film with acrylic
adhesive
-55 to 120°C
-67 to 248°F
280 mm × 560 mm
11” × 22”
185 Ω/cm²
1200 Ω/in²
See technical specifications on pages
32-34.