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PSA Release Liners and Coatings

SpecialChem / Edward Petrie – Feb 21, 2007

A release liner is a critical element in a pressure sensitive adhesive product - perhaps as important as the adhesive itself. Pressure sensitive tapes, labels, and transfer films must be protected from accidental contact with other surfaces. They must also be constructed to allow for winding into rolls for the purpose of packaging and application. Without a release liner many PSA products could not be produced and the end user would be faced with an unworkable lump of sticky adhesive. Because PSA release liners will be eventually thrown away, end users rarely give these materials much consideration. However, they can be decisive in the ultimate success or failure of an application, and they are certainly a material that requires quite a bit of forethought and concern on the part of the PSA part supplier. Understanding the role of the release liner and the types of construction available is becoming increasingly more important as PSAs gain broad acceptance in diverse industries and applications.

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