The electrical insulation is part of any
construction of electrical and electronic device. In addition to the electrical
insulation property the materials are often requested thermal, mechanical and chemical
properties. Flexibility is a required characteristic because it makes the
application easier. Among others a flexible product easily takes on the exact
shape of a form and allows a better contact with the material to be insulated.
Please note that the term ‘flexible’ shall be used for any thickness of these
materials and although over 1
mm, flexibility is not a inherent characteristics of
these products.
The KAPTON® (Dupont de Nemours polyimide)
films have a great importance in state-of-the-art electric and electronic
industry because they offer an exceptional combination of mechanical,
electrical, thermal and chemical properties in a very large range of
temperature. Moreover they offer a very large stability and a very good fire
resistance.
The polyimide films KAPTON® (PI) offer
very large characteristics meeting numerous industrial needs.
Key properties
self extinguishing
it will not melt, it carbonizes at over 800°C and very low smoke
emission
no known organic solvent
Tg over 350°C
Usable from -2690C up to 400°C
Very high dielectric strength (300 Kv/mm
with a 25µ film)
Very high resistance to radiations
A large range
HN, standard film
VN, heat-stabilized film
FN, heat-sealable
BCLY, laser printable, thermal transfer,
pigment provides high contrast
CB, black opaque film, low light
transmission/reflectivity
CR, film with improved electric
characteristics, step change in Corona
resistance
MT, improved thermal conductivity (3x HN
film)
RS, carbon loaded, 1 conductive side and
dielectric on the other side
XC, carbon loaded : 2 main features
conductive or anti-static.
HPP-ST, heat-stabilized and Corona treated for an
improved adhesion.
Kapalu, film coated with aluminium on 1
o 2 sides
Applications
Motors and rotating machines
Transformers
Devices
Various applications where service
temperature is high
Multilayer insulation
Wire wrapping
A very large technical documentation
meeting the needs of R&D departments is available on request.
Products 
Kapton ®