Label adhesive and activation method for polymeric label

C - Chemistry – Metallurgy – 09 – J

Patent

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Details

C09J 7/02 (2006.01) C09J 7/00 (2006.01) C09J 133/00 (2006.01) G09F 3/10 (2006.01)

Patent

CA 2663308

A water activated adhesive system is described that is particularly suited for applying non-paper polymeric labels to surfaces which have low moisture permeability. The adhesive system is characterized by a dry non-tacky surface that becomes tacky in less than one second when contacted with a water-based activator. While it is a water activated adhesive, it is also characterized after aging bonded to a substrate by resistance to adhesive failure during 72 hours of immersion in ice/water mixture. The adhesive is beneficial to allow use of existing paper labeling equipment with polymeric labels.

L'invention concerne un système adhésif activé par l'eau qui convient particulièrement à l'application d'étiquettes polymères sans papier sur des surfaces présentant une faible perméabilité à l'humidité. Le système adhésif est caractérisé par une surface non collante sèche qui devient collante en moins d'une seconde au contact d'un activateur à base d'eau. Après avoir été collé à un substrat, ledit adhésif activé par l'eau est également caractérisé par son maintien d'adhérence même après une immersion de 72 heures dans un mélange de glace et d'eau. L'adhésif permet avantageusement d'utiliser des équipements d'étiquetage papiers existants pour la pose d'étiquettes polymères.

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