Flexible Laminate AHA
Flexible Laminate AHA
Premium high-temperature 3-layer laminate featuring Kapton polyimide film sandwiched between two layers of Metastar® aramid paper. Engineered for critical Class H and Class N applications where polyester laminates cannot survive. Retains high dielectric and mechanical strength under continuous high-temperature operating conditions.
Priced per requirement — tell us grade, width, thickness and quantity and we quote against it.
Technical specifications
| Construction | Aramid paper bonded to PET or polyimide film |
|---|---|
| Thermal class | Class F (155 °C) with PET film, Class H (180 °C) with polyimide |
| Thickness range | 0.13–0.50 mm, typical |
| Width range | Slit to 1,000 mm |
| Layers | Two-layer (film one side) or three-layer (film cored) |
| Form | Reels, slit to width; die-cut parts to drawing |
| Compliance | UL, CE, RoHS, REACH |
Typical values for this material class, given as a guide. The datasheet carries the property table, test methods and tolerances for the grade and is the governing document.
Overview
AHA is the premium construction in the range: polyimide film cored between two layers of aramid paper. It combines the temperature capability of polyimide with the symmetry and mechanical protection of a three-layer build, and is specified for critical Class H applications where neither can be compromised.
It is the most expensive laminate of the four and the one to reach for when failure is costly — traction machines, aerospace actuation, generators with long overhaul intervals.
The top of the range
- Polyimide core — Class H (180 °C) service and beyond
- Three-layer — both faces aramid, film fully protected
- Symmetric — no orientation to control during assembly
- Critical duty — specified where an insulation failure is expensive to reach
Key properties
- Three-layer: polyimide film cored between two aramid papers
- Class H (180 °C) service
- Complete dielectric barrier, mechanically protected on both faces
- Both faces bond and take varnish
- Chemically stable and radiation resistant
- Symmetric — no wrong way round on assembly
Applications
Traction and rail
Main insulation in traction motors and generators.
Aerospace
Actuation and generation systems where temperature and reliability both govern.
Critical generators
Machines with long overhaul intervals where access is difficult.
High-temperature transformers
Layer and barrier insulation in demanding dry-type units.
Standards and compliance
- UL recognised component — certification held by the manufacturer
- CE marked
- RoHS compliant
- REACH compliant
- Manufactured under ISO 9001:2015
Certificates of conformity and mill test certificates are supplied with each shipment. Third-party testing can be arranged on request where a specification demands independent verification.
Sizes, packing and supply
- Thickness: 0.13–0.50 mm, typical range
- Width: slit to 1,000 mm
- Form: reels; die-cut parts to drawing
Quality and inspection
Every consignment is inspected before shipment and supplied with its mill certificate. For repeat programmes we hold the approved specification on file so a reorder repeats a known outcome rather than reopening the conversation.
Frequently asked questions
When is AHA justified over AH?
When both faces need to bond, when the liner is machine-inserted and film damage is a risk, or when the cost of an insulation failure is high enough that the symmetric construction is worth paying for.
What temperature class is AHA?
Class H, 180 °C, set by the polyimide film and the aramid papers together.
Can you supply it slit to my width?
Yes — slit to any width up to 1,000 mm rather than sold from fixed stock sizes.
Can you supply die-cut parts?
Yes. Send the drawing or a sample and we will quote tooling and parts separately so you can see what each costs.
What documentation comes with it?
Mill test certificate, certificate of conformity, packing list and the commercial export set. RoHS and REACH declarations on request.
Related products
Next step
Tell us the size and quantity
Send the thickness, slit width and annual volume for https://aramidpapers.com/wp-content/themes/aramidpapers and we come back with a costed offer, a firm lead time and the mill certificate you will receive with it.