Product information

tesa® 61908

Product description

tesa® 61908 is a transparent double-sided tape consisting of a PP-film backing and a tackified acrylic adhesive.

tesa® 61908 features especially:
  • Secure bond on PE and PP
  • Red PP-film liner can be easily cut with common hot wire systems

Main applications

  • Permanent bag sealing for PE/PP and polymer bags
  • Permanent bag sealing for medical pouches



Technical properties

Backing material

PP film



Total thickness

100 µm

Type of adhesive

tackified acrylic

Elongation at break

140 %

Tensile strength

20 N/cm

Type of liner


Colour of liner


Thickness of liner

80 µm

Adhesion properties

Adhesion to ABS (after 14 days)

10.7 N/cm

Adhesion to ABS (initial)

7.9 N/cm

Adhesion to Aluminium (after 14 days)

9.7 N/cm

Adhesion to Aluminium (initial)

6.6 N/cm

Adhesion to PC (after 14 days)

11.3 N/cm

Adhesion to PC (initial)

8.5 N/cm

Adhesion to PE (after 14 days)

4.3 N/cm

Adhesion to PE (initial)

3.5 N/cm

Adhesion to PET (after 14 days)

8.5 N/cm

Adhesion to PET (initial)

6 N/cm

Adhesion to PP (after 14 days)

6.2 N/cm

Adhesion to PP (initial)

5.1 N/cm

Adhesion to PS (after 14 days)

10.7 N/cm

Adhesion to PS (initial)

7.2 N/cm

Adhesion to PVC (after 14 days)

11.5 N/cm

Adhesion to PVC (initial)

6.8 N/cm

Adhesion to Steel (after 14 days)

13.7 N/cm

Adhesion to Steel (initial)

8.7 N/cm

Rating properties

Temperature resistance short term

120 °C

Temperature resistance long term

80 °C



Ageing resistance (UV)


Humidity resistance


Resistance to chemicals


Softener resistance


Static shear resistance at 23°C


Static shear resistance at 40°C


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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