Insulation materials
Kapton Polyimide Film for Extreme Conditions
Kapton HN by DuPont is a high-performance film for extreme conditions.
Kapton is successfully used in systems with temperatures up to 400 C and has a guaranteed continuous temperature resistance of 230 C. This puts the film in thermal class C per DIN EN 60085.
Kapton has no melting point and only begins to char above 800 C. The film is also extremely flame retardant and highly resistant to chemicals.
In short: polyimide film is used where other plastic films fail.
Applications
Application areas include chip and fuel cell stack production, medical technology, electronics and aerospace. In electrical insulation, Kapton is used wherever extreme temperatures meet minimal space, for example in special motors and thermally extreme application areas. Laminated with Nomex outer layers, Kapton is also available mechanically reinforced as NKN laminate.
Delivery formats and processing
We supply Kapton as slit rolls from a strip width of 4 mm, as sheets or processed into stamped and formed parts to drawing. Precisely with this premium film, accurate slitting pays off: on our lines we convert films from 23 µm with tight tolerances and minimal waste.
Selection criteria for purchasing and design
Kapton is considerably more expensive than polyester or aramid solutions and is worthwhile when temperature, space or chemical environment leave no alternative. We check with you whether your application really needs the film or whether an NKN laminate or Nomex aramid paper is more economical. Enquiries reach us via the contact form.
Frequently asked questions
Up to which temperature can Kapton be used?
Kapton is used in systems with temperatures up to 400 C and has a guaranteed continuous temperature resistance of 230 C. It belongs to thermal class C per DIN EN 60085.
Why is Kapton considered particularly safe in case of fire?
Kapton has no melting point, only begins to char above 800 C and is extremely flame retardant. It does not drip and retains its insulating effect for a long time even under extreme heat.
Where is Kapton polyimide film used?
In chip and fuel cell production, medical technology, electronics and aerospace, and wherever in electrical insulation other plastic films fail thermally or chemically.
When is Kapton worth it compared with cheaper materials?
When continuous temperatures above class H, extreme peak temperatures, aggressive media or minimal space leave no alternative. Otherwise NKN laminates or aramid papers are usually more economical, and we advise honestly on this.
More Products
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NKN is a three-layer laminate of Nomex, Kapton and Nomex.
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Nomex 410 Aramid Paper
Nomex 410 by DuPont is the original aramid paper.
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Custom Parts for Demanding Insulation Systems
For particularly demanding insulation systems we produce custom parts.
Learn more →Do you have a specific requirement?
Talk to us. We will find the right insulation solution.