APICAL® Polyimide AF
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|
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.
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.