APICAL® Polyimide AF

Apical® Polyimide Film Division

Type AF Polyimide Film

APICAL® Polyimide Film Is the Right Choice.

APICAL® Type AF Polyimide Film is an FEP coated/laminated polyimide exhibiting an excellent balance of physical, electrical, moisture, and chemical resistance properties. APICAL® Type AF Polyimide Film maintains the unique balance of properties exhibited by APICAL® Polyimide AV Type. Commercially available constructions are shown in the Grade Table. Other constructions are available upon request.

Apical® Polyimide AF - Grade Table

Apical Polyimide Grade Nominal Thickness FP PI
Mils Mils Mils
Microns Microns Microns
150AF019 1.5 - 1
38.1 - 25.4
200AF919 2 0.5 1
50.8 12.7 25.4
250AF029 2.5 - 2
63.5 - 50.8
300AF929 3 0.5 2
76.2 12.7 50.8
200AF011 2 - 1
50.8 - 25.4
300AF021 3 - 2
76.2 - 50.8
120AF616 1.2 0.1 1
30.5 2.5 25.4
L50S10 1.5 - 1
38.1 - 25.4
130EF616B 1.3 0.15 1
33 3.8 25.4
P50A10 1.5 - 1
38.1 - 25.4

Polyimide Films

Ask The Engineers

Here's your chance to ask Kaneka Engineers questions about APICAL® Polyimide Film and its applications. Use it as an open exchange of ideas and questions about polyimide applications, challenges, and innovations. ​
Email Us Your Questions

Apical® Polyimide AF - Grade Details

Thermal Properties and Heat Seal Strength of APICAL® Type AF Polyimide Film

Types AV, AF, and NP APICAL® Polyimide Film are listed by Underwriters Laboratories, Inc. under their file number E135495. A thermal index of 240°C (464°F) for electrical properties (all types and gauges) and 200°C (392°F) to 220°C (428°F) for mechanical properties (depending upon the type and gauge) are listed.

Underwriters Laboratories, Inc. lists flammability of UL94-VO for Types AV, AF, and NP APICAL® Polyimide Film.

Heat Seal Strength of APICAL® Type AF Polyimide Film

The Film-to-Film heat seal strength between AF type Films (coated side to coated side or uncoated side depending upon type) is measured in the following manner:

Seals are made in a jaw sealer at 350ºC [662F], 20 psi, 20 sec dwell time. After cooling, the seals are cut to 1″ (25.4mm) wide strips. The strength of the seal is measured with an Instron-type tensile tester. Seal strength is defined as peak reading for each seal and five specimen values are averaged.

Minimum heat seal strengths shall be:

    • 450 g/in (1.7 N/cm) between uncoated side and coated side or both coated sides.
    • The bond strength between FEP and Polyimide Film on all Type AF Films (except 120AF616) shall have a minimum value of 200 g/in (0.77 N/cm) as measured using an Instron-type tensile tester.


More Information


Industries who depend upon APICAL® Polyimide Film benefit not only from a carefully designed product, but from the process behind it as well. Unlike many film manufacturers, APICAL® Polyimide process technology is driven by quality not speed.


In spite of being lighter in weight than many of the materials it has replaced, the overall performance of APICAL® Polyimide surpasses them. Its high degree of dimensional stability allows it to be wrapped tightly for applications where space is a premium. It is tough, highly resistant to tearing, abrasion and puncture.

Technical Data

APICAL®​ Polyimide Films possess an excellent balance of physical, thermal, electrical, and chemical properties over a wide range of temperatures for flexible printed circuits, tape automated bonding, motor generator insulation, wire and cable insulation, pressure sensitive tape and other uses.

What Materials Do You Need?

Contact Sales at 800-222-8128