Electronics, PET, Black, Light Management
Product information

tesa® 7250

Product description

tesa® 7250 is a deep black, single sided self-adhesive tape consisting of a black PET film backing and a black tackified acrylic adhesive

tesa® 7250 features esp.
  • Thickness: 50µm
  • Very good light blocking performance
  • High peel strength and shear resistance
  • Very good repulsion resistance properties
  • Very good handling performance in converting processes
  • Excellent resistance to demanding environmental conditions
  • Very good removability on common plastic and metalic substrates
  • Pin whole free product design

Main applications

  • Fixing of cables or constructive parts in LED light sources or Flat Panel displays
  • Light shielding in consumer electronics parts
  • Electrical insulation

Technical properties

Backing material

PET film

Total thickness

50 µm

Type of adhesive


Elongation at break

50 %

Tensile strength

30 N/cm

Temperature resistance short term

200 °C

Temperature resistance long term

100 °C

Dielectric breakdown voltage

4000 volt

Transmittance (380 - 780nm) <

0.02 %

Adhesion properties

Adhesion to ABS (after 14 days)

4.7 N/cm

Adhesion to ABS (initial)

3.9 N/cm

Adhesion to Aluminium (after 14 days)

5.3 N/cm

Adhesion to Aluminium (initial)

3.8 N/cm

Adhesion to Glass (after 14 days)

4.9 N/cm

Adhesion to Glass (initial)

4.3 N/cm

Adhesion to PC (after 14 days)

5.2 N/cm

Adhesion to PC (initial)

3.9 N/cm

Adhesion to Steel (after 14 days)

5.3 N/cm

Adhesion to Steel (initial)

4.2 N/cm

Rating properties

Ageing resistance (UV)


Humidity resistance


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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