Product information

tesa® 61970

Double-sided box closure tape with fingerlift

Product description

tesa® 61970 is a transparent double-sided self-adhesive tape consisting of a PP-film backing and a tackified acrylic adhesive.

tesa® 61970 features especially:

  • Fast liner removal due to fingerlift
  • High initial adhesion for a fast closure process
  • Reliable bonding performance even at high temperature

Main applications

  • Closing of self-adhesive mail order boxes
  • Closing of CD and book cartons

Technical properties

Backing material

PP film



Total thickness

220 µm

Type of adhesive

tackified acrylic

Elongation at break

150 %

Tensile strength

50 N/cm

Type of liner


Colour of liner


Thickness of liner

71 µm

Adhesion properties

Adhesion to ABS (after 14 days)

14.4 N/cm

Adhesion to ABS (initial)

11.3 N/cm

Adhesion to Aluminium (after 14 days)

12.8 N/cm

Adhesion to Aluminium (initial)

10.2 N/cm

Adhesion to PC (after 14 days)

15 N/cm

Adhesion to PC (initial)

12.3 N/cm

Adhesion to PE (after 14 days)

6.8 N/cm

Adhesion to PE (initial)

5.4 N/cm

Adhesion to PET (after 14 days)

12.5 N/cm

Adhesion to PET (initial)

9.9 N/cm

Adhesion to PP (after 14 days)

8.8 N/cm

Adhesion to PP (initial)

6.8 N/cm

Adhesion to PS (after 14 days)

13.4 N/cm

Adhesion to PS (initial)

11.8 N/cm

Adhesion to PVC (after 14 days)

17 N/cm

Adhesion to PVC (initial)

10.5 N/cm

Adhesion to Steel (after 14 days)

13.5 N/cm

Adhesion to Steel (initial)

13 N/cm

Rating properties

Temperature resistance short term

130 °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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