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
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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