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25/10/2011
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A new generation of high performance 'optically clear adhesive' transfer tapes for touchpanels has been introduced by adhesive tape specialist tesa as part of a drive to increase its touch screen technology and application capabilities.
 OCA tapes are widely used in the electronics industry to simplify communication with users through touchscreens or touchpanels. Applications are diverse and enable consumers to access information, use Sat Nav devices, make purchases and interact with the latest MP3, Smartphones and tablet PCs.
Currently most touchpanels use either resistive or capacitive systems. The resistive type allows users to select menu options by exerting pressure with a stylus or finger, while the latest, extremely high performance capacitive type, responds to just a light touch of the finger. Here the screen surface generally comprises a high-quality glass, or light weight durable engineering plastic, covering a sandwich structure made up of multiple functional layers that transmit the impulse from the finger within fractions of a second.
The optically clear, extremely thin adhesive tapes developed and manufactured by tesa deliver practically invisible bonding and long product life. Essentially they are free of dust particles and bubbles as well as highly resistant to major temperature fluctuations, humidity, and UV radiation.
Considerable expertise is required to produce OCAs and advise customers on how to apply them. Apart from the highly sophisticated manufacturing processes required, a comprehensive understanding of lamination behavior is critical to ensure optimal end product performance. Working with customers tesa has enhanced the lamination performance of its touchpanel tapes and incorporated the most recent technical benefits in these latest products.
Manufactured in thicknesses of between 25 and 125µm tesa OCA transfer tapes are totally dependable, ultra clean and designed specifically for use in touchscreen lamination processes.
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Author
tesa UK Ltd
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