CONDUCTOFOL ® 2159 consists of mica paper based on calcined muscovite impregnated with resin and both sides are covered with a PET-film whereas one side is additionally coated with a special adhesive.  The adhesive on the thicker PET-film melts at temperatures above 100 ºC and conductors with CONDUCTOFOL ® 2159 can be glued together in a hot press.


CONDUCTOFOL ® 2159 is used e.g. for the insulation of rectangular copper conductors for low and high voltage coils

Rolls maximum width 1000 mm
Tape from 6 mm width upward
Standard 9, 12, 15, 20 mm


Minimum 24 months at 20ºC
Minimum 48 months at 5ºC

Processing Advice

Pressing conditions for preconsolidation:
Best bonding will be achieved at 160 ºC. In addition the adhesive on the PET-film improves bonding of the main insulation (VPI- or RR-system) to the conductor bundle. The conductor bundle covered with a release film is put into a hot press at 120 – 160 ºC and pressed for 1-5 minutes. Before opening the press is is recommended to cool down below 100 ºC.

Additional Information

The thicker the PET-film is coated with an adhesive


Download Full Brochure

Product Description

Technical Data

Test Method

Unit Value Value
Nominal thickness IEC 60371-2 mm 0.09 ± 0.01 0.10 ± 0.01
Thickness after pressing IEC 60371-2 mm 0.06 ± 0.015 0.07 ± 0.015
Total substance IEC 60371-2 g/m² 133 ± 10 143 ± 10
Mica paper IEC 60371-2


8 ± 2

8 ± 2

PET-Film IEC 60371-2


75 ± 8 75 ± 8
PET-Film (coated with melting adhesive) IEC 60371-2


32 ± 3
42 ± 4
Resin content IEC 60371-2 g/m² 18 ± 2 18 ± 2
Breakdown voltage IEC 60243-1 kV ≥ 6 ≥ 7
Tensile strength IEC 60371-2 N/cm ≥ 30 ≥ 40
Thermal class IEC 60216-2   155(F) 155(F)

Get In Touch

We would love to hear from you! Please fill out this form and we will get in touch with you shortly.
  • This field is for validation purposes and should be left unchanged.

“Copyright © 2016 DuPont. All rights reserved. The DuPont Oval Logo, DuPont™, The miracles of science™ and all products denoted with ® or ™ are trademarks or registered trademarks of E. I. du Pont de Nemours and Company or its affiliates”

DISCLAIMER: The technical information contained herein is the result of extensive testing in the manufacturer’s laboratories. In addition any application advice given verbally, in writing or by testing corresponds to the best of our knowledge and belief. Since the use and application of any of our products lies beyond our area of control, it remains the responsibility of the user to verify the product’s suitability for their application.

Back to Top