A synthetic based self seal adhesive system for packaging

Details A synthetic based self seal adhesive system for packaging A synthetic based self seal adhesive system for packaging

C - Chemistry, Metallurgy

09

J

C09J 133/06 (2006.01)

Patent

CA 2583774

The present invention provides a waterbased self seal adhesive system utilizing a self seal adhesive gontaining no natural rubber. The self seal adhesive system is comprised of a transfer adhesive disposed on a transfer web and an anchor adhesive disposed on an anchor web with the two adhesives forming the seal for the package. The self seal adhesives bond to themselves when pressure is applied to close or seal the packaging material. When peeled apart, the adhesive splits, adhesively fails from either or both the front web or the back web, or destroys one or both of the substrates of the package. Primer coatings may also be used to enhance performance of the self seal adhesive.

La présente invention concerne un système d'adhésif autocollant à base aqueuse selon lequel l'adhésif autocollant ne contient aucun caoutchouc naturel. Le système d'adhésif autocollant est composé d'un adhésif de transfert disposé sur une bande de transfert et d'un adhésif d'ancrage disposé sur une bande d'ancrage, ces deux adhésifs formant le joint pour l'emballage. Les adhésifs autocollants se collent l'un à l'autre lorsqu'une pression est appliquée pour fermer ou sceller le matériau d'emballage. Lorsqu'il est décollé, l'adhésif se divise, se décolle de la bande frontale et/ou de la bande dorsale, ou détruit l'un ou l'autre des substrats de l'emballage ou les deux à la fois. On peut également utiliser des revêtements primaires pour améliorer les performances de l'adhésif autocollant.

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