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Technical films

Information on the technical films we process

Here you will find information on the most common films we process, such as the manufacturer, the trade name, the UL file number and information on CTI, flammability and the thermal material classes. Further information on the technical films can be found here.

Further information on the UL listing of our adhesive tapes can be found  here.

In addition to the standard range, we can coat almost any web-shaped material. We maintain good contacts with many important manufacturers of technical films. Together with application-specific coatings (adhesive coating, functional coating), the properties of films and coatings can easily be combined in an advantageous way.

*): CTI value not specified in UL file or not tested by UL

**): Values apply to the raw material, no specification in UL file

Explanation for applications outside electrical engineering:

Many of the base materials we use are assigned to a specific thermal class. This designation comes from electrotechnical standards and specifies a continuous load limit. For polyester films, for example, 105°C is usually specified (generic value recognized without additional tests). This results in thermal class B for adhesive tapes according to the typical tests for adhesive tapes.

The following applies to all applications: all films can withstand higher (and lower) temperatures in the short term. Polyester, for example, can be exposed to temperatures of just over 200°C for hours before its mechanical properties are significantly impaired.

Some typical applications for adhesive films are

  • Protective film for sensitive surfaces

  • Assembly aid in transformer construction

  • Bundling tape in the cable industry

  • Shatter protection and privacy protection for glass panes

  • Sealing tape for rolled material webs

  • Optical seal thanks to completely opaque films

  • Heat conduction and electrical insulation


= tracking resistance

0= >600V (only CMC 278xx, Formex)

1= >400V-600V (e.g. polyester film such as

Hostaphan or Mylar, Kapton FN)

2= >250V-400V

3= >175V-250V (e.g. Aptiv Peek, Nomex)

4= >100V-175V (e.g. Kapton HN)


= High Arc Ignition, arc ignition;

UL 746C

= Number of arc ignitions up to

Ignition of the insulation material

0= >120

1= 60-120

2= 30-60

3= 15-30

4= 0-15


= Hot wire ignition, glow wire test;

UL 746C Time to ignition in sec.

0= >120

1= 60-120

2= 30-60

3= 15-30

4= 7-15

5= 0-7