Kapton® Polyimide films

Kapton® PST

Kapton® PST crystalline polyimide film designed for the pressure sensitive tape industry

Kapton® PST is a tough film that exhibits an excellent balance of physical, chemical and electrical properties over a wide temperature range, particularly at unusually high temperatures.

DuPont™ Kapton® PST grade polyimide film is a crystalline film designed for the pressure sensitive tape industry with improved film attributes for PST coaters. Film properties that aid in coater performance include superior point thickness and gauge control across the web, improved roll formation, and extended roll lengths. The film is available in 50, 100, 200, 300 and 500 gauges.

Features include:

  • Superior tensile strength
  • Good elongation
  • Minimal variation between MD and TD properties
  • Superior dielectric
  • UL listing
  • Long length splice-free rolls
  • Batch-to-batch uniformity

TYPICAL ELECTRICAL PROPERTIES OF Kapton® PST FILM

PROPERTY

50 PST

100 PST

200 PST

300 PST

500 PST

TEST METHOD

Dielectric Strength,
AC volt/mil (kV/mm)

Minimum

6,000 (118)

6,700 (236)

5,300 (197)

4,800 (177)

3,500 (118)

ASTM D-149-81

Volume Resistivity,
Ω-cm at 200OC

Minimum

1012

1012

1012

1012

1012

ASTM D-257-78

Dielectric Constant

at 1 kHz Maximum

4.0

3.9

3.9

3.9

3.9

ASTM D-150-81

Dissipation Factor

at 1 kHz Maximum

0.0050

0.0036

0.0036

0.0036

0.0036

ASTM D-150-81

For complete information on Kapton® PST, view data sheet.