tesa® 69904 Optically Clear Adhesive

100 µm UV-curable optically clear tape for curved design

Product Features
  • High transmittance and low haze
  • Excellent temperature, humidity and UV-resistance
  • Low UV curing dosage
All product features

Product description

tesa® 69904 is a highly transparent transfer tape produced under controlled clean room conditions and designed for optically clear lamination for rigid or flexible substrates with curved designs. It is post UV curable tape which could be cured under UVA and UVV (<410nm) wavelength.

Product Features

  • High transmittance and low haze
  • Excellent temperature, humidity and UV-resistance
  • Low UV curing dosage
  • Excellent edge bubble suppression

Application Fields

  • Optically clear lamination of curved cover designs
  • Optically clear lamination of plastic cover

Product Construction

Type of liner PET film
Backing material none
Type of adhesive acrylic
Color transparent
Color of liner transparent
Thickness of easy release liner 50 µm
Thickness of tape 100 µm
Thickness of tight release liner 75 µm

Properties / Performance Values

Ageing resistance (UV) very good
Haze 0.2 %
Humidity resistance very good
Refractive index 1.48
Tack low
Transmittance (380 - 780nm) > 99 %

Adhesion to Values

Adhesion to Glass (initial) 12.5 N/cm
Adhesion to Glass (after UV curing) 12 N/cm
Adhesion to PC (initial) 11.4 N/cm
Adhesion to PC (after UV curing) 12.6 N/cm
Adhesion to PET (initial) 8.8 N/cm
Adhesion to PET (after UV curing) 10.6 N/cm

Additional Info

UV curing dosage suggestion
  • Above 1000mj per sq.cm (UVA 365nm) dosage on adhesive surface
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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