• Item Name: tesa® 69908
• Manufacturer: tesa SE
• Technologies: UV-curable optically clear adhesive tape
• Color: Transparent
• Backing material: None
• Type of adhesive: Acrylic
• Package Size: Contact to Techniq VN for details
• Shelf Life: Contact to Techniq VN for details
1. Product Overview
tesa® 69908 is a 200 µm UV-curable optically clear transfer tape, manufactured under clean room conditions to ensure high transparency and minimal haze. Designed for curved or flexible substrates, it offers superior optical clarity, low curing dosage, and excellent durability against temperature, humidity, and UV exposure.
2. Applications
Optically clear lamination of curved cover designs
Optically clear lamination of plastic covers
3. Typical Properties
| Property | Value / Description |
|---|---|
| Backing material | None (transfer tape) |
| Adhesive type | Acrylic |
| Liner material | PET film (transparent) |
| Liner thickness | 50 µm (easy release) / 75 µm (tight release) |
| Tape thickness | 200 µm |
| Colour | Transparent |
| Ageing resistance (UV) | Very good |
| Haze | < 0.3 % |
| Transmittance (380–780 nm) | > 99 % |
| Refractive index | 1.48 |
| Tack | Low |
| Humidity resistance | Very good |
| Adhesion to Glass (initial/UV cured) | 14.4 N/cm → 14.5 N/cm |
| Adhesion to PC (initial/UV cured) | 14.6 N/cm → 14.9 N/cm |
| Suggested UV curing dosage | > 2000 mJ/cm² (UVA 365 nm) |
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