Product information

tesa® 61970, 51970

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

Elongation at break

150 %

Type of liner


Type of adhesive

tackified acrylic

Colour of liner


Tensile strength

50 N/cm

Total thickness

220 µm

Thickness of liner

71 µm

Backing material

PP film



Adhesion properties

Adhesion to Steel (initial)

13 N/cm

Adhesion to PE (initial)

5.4 N/cm

Adhesion to PC (after 14 days)

15 N/cm

Adhesion to PS (after 14 days)

13.4 N/cm

Adhesion to ABS (initial)

11.3 N/cm

Adhesion to PP (after 14 days)

8.8 N/cm

Adhesion to PET (after 14 days)

12.5 N/cm

Adhesion to Aluminium (after 14 days)

12.8 N/cm

Adhesion to PE (after 14 days)

6.8 N/cm

Adhesion to Aluminium (initial)

10.2 N/cm

Adhesion to ABS (after 14 days)

14.4 N/cm

Adhesion to PC (initial)

12.3 N/cm

Adhesion to PVC (initial)

10.5 N/cm

Adhesion to PS (initial)

11.8 N/cm

Adhesion to PET (initial)

9.9 N/cm

Adhesion to PP (initial)

6.8 N/cm

Adhesion to Steel (after 14 days)

13.5 N/cm

Adhesion to PVC (after 14 days)

17 N/cm

Rating properties

Static shear resistance at 23°C


Resistance to chemicals


Humidity resistance


Static shear resistance at 40°C




Ageing resistance (UV)


Temperature resistance long term

80 °C

Temperature resistance short term

130 °C

Softener resistance


Additional Info

Liner variants:
PV1 white glassine paper (84 µm)
PV6 red MOPP-film (80 µm)

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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