Kapton® Polyimide films

Kapton® FWN

Kapton® FWN magnet wire insulation

Kapton® FWN is ideal for demanding magnet wire applications and for difficult-to-wind motors.

Kapton® FWN is a multi-layer polyimide & fluoropolymer dispersion-coated film. The fluoropolymer coating functions as a heat-fusible layer for bonding to magnet wire conductors. It has superior scrape abrasion resistance and exhibits lower frictional properties than wire insulated with other commonly used polyimide materials.  Kapton® FWN is ideal for demanding magnet wire applications and for difficult-to-wind motors.

Applications:

  • Magnet wire
  • Traction motors used in rail, auto, and mining
  • Industrial motor insulation
  • Wind, hydro generators

TYPICAL PROPERTIES FOR DUPONT™ Kapton® FWN POLYIMIDE FILM AT 23°C (73°F)

PROPERTY

120FWN616B

150FWN019

TEST METHOD

Thickness, mil (µm) 

1.30

1.50

ASTM D374

Tensile Strength, kpsi (MPa)

30 (207)

27 (186)

ASTM D882

Elongation, %

92

87

ASTM D882

Dielectric Strength, V/mil

6400

4700

ASTM D149