Protective coating for pressure-activated adhesives

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 7/12 (2006.01) B05D 5/10 (2006.01) B05D 7/24 (2006.01) C09J 7/02 (2006.01)

Patent

CA 2198749

A pressure-sensitive coating for reducing seal is applied to an exposed surface of a pressure-activated adhesive. The coating is preferably deposited on the exposed surface of the adhesive by decomposition of a decomposable precursor in the presence of plasma. The employed decomposable precursor may include a hydrocarbon gas whereby an amorphous layer of interconnected carbon atoms is deposited on the surface of the adhesive, or a silicon-containing compound whereby the deposited coating is an amorphous layer of interconnected silicon and oxygen atoms.

Revêtement autocollant destiné à réduire l'adhérence intempestive et appliqué sur une surface exposée d'un adhésif activé par la pression. Ce revêtement est de préférence déposé sur la surface exposée de l'adhésif par décomposition d'un précurseur décomposable en présence de plasma. Le précurseur décomposable utilisé peut comprendre un gaz d'hydrocarbure par lequel une couche amorphe d'atomes de carbone interconnectés est déposée sur la surface de l'adhésif, ou un composé contenant du silicone au moyen duquel le revêtement déposé est une couche amorphe d'atomes d'oxygène interconnectés et de silicone.

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