Patent ID: 8673442
Filing Date: 2014-03-18
Classification: C08G,C08K,C08L,C09J,G09F,Y10T

Abstract:
1. An adhesive label, comprising: a substrate having a face side and a rear side; and an adhesive layer applied on the rear side of the substrate, said adhesive layer being first non-tacky but activatable by external energy from an energy source to become a tacky adhesive surface, wherein the adhesive layer comprises a segmented polyurethane structure comprising crystalline polyester segments, and wherein the adhesive layer further comprises isocyanate groups, polyisocyanate or some other agent as a deactivating agent, wherein said deactivating agent is activatable by external energy exerted on the adhesive layer from an energy source so that said deactivating agent, when activated, begins to transform the adhesive layer to become non-tacky.