Tesa 69401 - 25µm optically clear transfer tape

25µm optically clear transfer tape \n \nTesa 69401 is a highly transparent transfer tape produced under controlled clean room conditions and designed for optically clear lamination. \n

Special features:

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• High transmission and low haze
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• Excellent temperature, humidity and UV resistance
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• Excellent whitening resistance
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• Excellent ITO compatibility (acid free)
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• Very good bubble stability (outgassing of plastic substrates)
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• High bonding strength
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• Balanced lamination (gap filling) and converting performance
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• Smooth and easy liner removal
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Main applications

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• Optically clear lamination of films to rigid or flexible substrates especially in capacitive type touch panels
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• Bonding of flexible touch panels to protective cover or lens
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• Lamination of optical films, e.g. display protection and anti-splinter films
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Technical properties

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Total thickness	25 µm
Type of adhesive	pure acrylic
Transmittance (380 – 780nm) >	99 %
Haze	< 0.5 %
Refractive index	1.48

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Adhesion properties

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Adhesion to Glass (after 14 days)	6.6 N/cm
Adhesion to Glass (initial)	5.4 N/cm
Adhesion to PC (after 14 days)	7 N/cm
Adhesion to PC (initial)	5.9 N/cm
Adhesion to PET (after 14 days)	5 N/cm
Adhesion to PET (initial)	4.1 N/cm
Adhesion to PMMA (after 14 days)	6.6 N/cm
Adhesion to PMMA (initial)	5.8 N/cm
Adhesion to Steel (after 14 days)	6.6 N/cm
Adhesion to Steel (initial)	5.2 N/cm