Product information

tesa® 68549

20µm double sided transparent conformable filmic tape

Product description

tesa® 68549 is a transparent, double-sided self-adhesive tape consisting of a thin, conformable PET film backing and a tackified acrylic adhesive.
tesa® 68549 features esp.:
  • Thickness: 20µm
  • Backing thickness: 2µm
  • Excellent heat transfer due to low thickness and good wetting
  • High adhesion level relative to low thickness
  • Excellent conformability and adjustment to curved surfaces
  • Excellent resistance to demanding environmental conditions

Main applications

  • Mounting of heat spreading parts
  • Lamination in NFC antenna
  • Very small design gap filling


Technical properties

Type of adhesive

tackified acrylic

Backing material

PET film



Adhesion properties

Adhesion to Steel (initial)

7.3 N/cm

Adhesion to PE (initial)

2.2 N/cm

Adhesion to PC (after 14 days)

8.2 N/cm

Adhesion to ABS (initial)

6.3 N/cm

Adhesion to ABS (after 14 days)

7.3 N/cm

Adhesion to PC (initial)

8 N/cm

Adhesion to PE (after 14 days)

3.1 N/cm

Adhesion to Steel (after 14 days)

9.7 N/cm

Rating properties

Static shear resistance at 23°C


Resistance to chemicals


Humidity resistance




Ageing resistance (UV)


Temperature resistance long term

100 °C

Temperature resistance short term

200 °C

Additional Info

Liner variants:
PV57: double sided PET liners (36µm easy-release inside / 50µm tight-release outside)
PV65: double sided PET liners (36µm transparent easy-release inside / 50µm blue tight-release outside)
PV20: brown/blue logo glassine paper (71μm; 82g/m²)

tesa® products prove their impressive quality day in, day out in demanding conditions and are regularly subjected to strict controls. All technical information and data above mentioned are provided to the best of our knowledge on the basis of our practical experience. They shall be considered as average values and are not appropriate for a specification. Therefore tesa SE can make no warranties, expressed or implied, including, but not limited to any implied warranty of merchantability or fitness for a particular purpose. The user is responsible for determining whether the tesa® product is fit for a particular purpose and suitable for the user’s method of application. If you are in any doubt, our technical staff will be glad to support you.

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