Solution activatable multi-layer adhesive compositions for liner-free labels and methods of activation thereof
AssigneeNuLabel Technologies, Inc.
InventorsDaniel Youngwhan Cho, Benjamin David Lux, Heidi M. Munnelly, Philip So, Kathleen A. Tabis, David A. Sonshine
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Abstract
Fluid activatable, multilayer adhesive compositions for use with liner-free labels, and methods of making and using thereof are described herein. The compositions contain a functional layer, such as an adhesive layer, which is applied to the label and a barrier layer which is applied on top of the adhesive layer. The multilayer composition prevents the adhesive layer on the label from interacting with the face of an adjacent label, particularly when the labels are stored as coils or folded stacks.
Claims41
A fluid-activatable linear-free label comprising a label substrate, an adhesive layer and a barrier layer.
A kit comprising an adhesive composition and a barrier composition, wherein the adhesive composition comprises at least two polymeric materials with different hydrophilicities, which are activated by an activating fluid comprising one or more solvents, wherein the more hydrophilic material provide quick tack when exposed to the activating fluid and the more hydrophobic polymer provides ultimate adhesion when exposed to the activating fluid and the barrier composition comprises a non-tacky, film-forming resin.
The kit of claim 35, wherein the more hydrophobic polymer is polystyrene acrylic copolymer.
Dependencies are inferred from the claim text.