Articles, compositions, systems, and methods using selectively detackified adhesives
Adhesive compositions are described which can be selectively detackified or deadened. Articles using such adhesive compositions are also described. Also described are techniques in which select regions of adhesive layers in the articles are detackified. Also described are systems and methods using the various articles and adhesive compositions. And particular label constructions are described.
1. A layered adhesive assembly comprising:
a face layer defining an outer edge extending around the assembly, a front face, and an oppositely directed rear face;
an adhesive layer disposed on the rear face, the adhesive undergoing a reduction in tack upon sufficient exposure to radiant energy;
wherein the adhesive layer includes a zone of adhesion, the zone of adhesion is selected from the group consisting of at least one zone of fully deadened adhesion, at least one zone of non-reduced or non-deadened adhesion, at least one zone of partially reduced adhesion, and combinations thereof.
2. The layered assembly of claim 1 wherein the adhesive layer includes at least one zone of fully deadened adhesion, at least one zone of non-reduced or non-deadened adhesion, and at least one zone of partially reduced adhesion.
3. The layered assembly of claim 1 wherein the zone of fully deadened adhesion is between the zone of non-reduced or non-deadened adhesion and the zone of partially reduced adhesion.
4. The layered assembly of claim 1 wherein the adhesive layer includes at least one zone of partially reduced adhesion and at least one zone of non-reduced or non-deadened adhesion.
5. The layered assembly of claim 4 wherein the zone of partially reduced adhesion is located adjacent to the zone of non-reduced or non-deadened adhesion.
6. The layered assembly of claim 1 wherein the zone of fully deadened adhesion is located adjacent to the edge.
7. The layered assembly of claim 1 wherein the zone of partially reduced adhesion is located adjacent to the edge.
8. The layered assembly of claim 1 wherein the adhesive layer includes at least one zone of fully deadened adhesion and at least one zone of non-reduced or non-deadened adhesion.
9. The layered assembly of claim 8 wherein the zone of fully deadened adhesion is adjacent to the zone of non-reduced or non-deadened adhesion.
10. The layered assembly of claim 8 wherein the zone of fully deadened adhesion extends along at least one of a top portion, a side portion, a bottom portion, or combinations thereof, of the outer edge of the face layer.
11. The layered assembly of claim 1 further comprising at least one of indicia, designs, text, or combinations thereof appearing within the zone of fully deadened adhesion.
12. The layered assembly of claim 1 further comprising at least one of indicia, designs, text, or combinations thereof appearing within the zone of partially reduced adhesion.
13. The layered assembly of claim 1 wherein the adhesive comprises an effective amount of functionalized emulsion polymer.
14. The layered assembly of claim 13 wherein the functionalized emulsion polymer is prepared by treating an emulsion polymer having carboxylic acid functional monomers with at least one ethylenically unsaturated monomer including an epoxy group in the presence of a suitable catalyst.
15. The layered assembly of claim 14 wherein the carboxylic acid functionalized monomers are selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, citraconic acid, acryloxypropionic acid, maleic acid, methacryloxyisopropyl acid phthalate, methacryloxyethyl acid phthalate, acryloxyisopropyl acid phthalate, acryloxyethyl acid phthalate, and combinations thereof.
16. The layered assembly of claim 14 wherein the ethylenically unsaturated monomer including an epoxy group is selected from the group consisting of glycidyl methacrylate, glycidyl acrylate, acrylated epoxidized soybean oil, allyl glycidyl ether, 3,4-epoxycyclohexyl methyl methacrylate, and combinations thereof.
17. The layered assembly of claim 14 wherein the catalyst is selected from the group consisting of tetrabutyl ammonium hydroxide, methyl tributyl ammonium hydroxide, ammonium hydroxide, tetrabutyl ammonium chloride, methyltributyl ammonium chloride, triphenyl phosphine, chromium acetate, and combinations thereof.
18. The layered assembly of claim 13 wherein the adhesive further comprises:
an ultraviolet photoinitiator.
19. A labeled container comprising:
a container defining an outer surface; and
a layered adhesive assembly, the layered adhesive assembly including a face layer and an adhesive layer;
the face layer defining an outer edge extending around the assembly, a front face, and an oppositely directed rear face, the adhesive layer disposed on the rear face, the adhesive undergoing a reduction in tack upon sufficient exposure to radiant energy, the adhesive layer includes a zone of adhesion, the zone of adhesion is selected from the group consisting of at least one zone of fully deadened adhesion, at least one zone of non-reduced or non-deadened adhesion, at least one zone of partially reduced adhesion, and combinations thereof.
20. The labeled container of claim 19 wherein the zone of fully deadened adhesion is between the zone of non-reduced or non-deadened adhesion and the zone of partially reduced adhesion.
21. The labeled container of claim 19 wherein the zone of fully deadened adhesion is adjacent to the zone of non-reduced or non-deadened adhesion.
22. The labeled container of claim 19 wherein the zone of fully deadened adhesion extends along at least one of a top portion, a side portion, a bottom portion, or combinations thereof, of the outer edge of the face layer.
23. The labeled container of claim 19 wherein the layered adhesive assembly further includes at least one of indicia, designs, text, or combinations thereof appearing within the zone of fully deadened adhesion.