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Tesa
Tesa 69401 - 25µm optically clear transfer tape
SKU:CE-TESA-0179
Technical Specifications
25µm optically clear transfer tape
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\nTesa 69401 is a highly transparent transfer tape produced under controlled clean room conditions and designed for optically clear lamination.
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Special features:
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- High transmission and low haze \n
- Excellent temperature, humidity and UV resistance \n
- Excellent whitening resistance \n
- Excellent ITO compatibility (acid free) \n
- Very good bubble stability (outgassing of plastic substrates) \n
- High bonding strength \n
- Balanced lamination (gap filling) and converting performance \n
- Smooth and easy liner removal \n
Main applications
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- Optically clear lamination of films to rigid or flexible substrates especially in capacitive type touch panels \n
- Bonding of flexible touch panels to protective cover or lens \n
- Lamination of optical films, e.g. display protection and anti-splinter films \n
Technical properties
\n| Total thickness | \n25 µm | \n
| Type of adhesive | \npure acrylic | \n
| Transmittance (380 – 780nm) > | \n99 % | \n
| Haze | \n< 0.5 % | \n
| Refractive index | \n1.48 | \n
Adhesion properties
\n| Adhesion to Glass (after 14 days) | \n6.6 N/cm | \n
| Adhesion to Glass (initial) | \n5.4 N/cm | \n
| Adhesion to PC (after 14 days) | \n7 N/cm | \n
| Adhesion to PC (initial) | \n5.9 N/cm | \n
| Adhesion to PET (after 14 days) | \n5 N/cm | \n
| Adhesion to PET (initial) | \n4.1 N/cm | \n
| Adhesion to PMMA (after 14 days) | \n6.6 N/cm | \n
| Adhesion to PMMA (initial) | \n5.8 N/cm | \n
| Adhesion to Steel (after 14 days) | \n6.6 N/cm | \n
| Adhesion to Steel (initial) | \n5.2 N/cm | \n
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