Heat transfer label assembly
View Patent ↗A heat transfer label assembly comprises a label and a carrier for releasably supporting the label. The carrier may comprise paper. A release layer comprising a polymer and wax is disposed between the label and the carrier. The carrier is substantially devoid of a solvent impermeable coating, such that the release layer is disposed directly on the paper.
1. A heat transfer label assembly comprising:
a label;
a carrier for releasably supporting the label, the carrier comprising paper; and
a release layer disposed between the label and the carrier, the release layer comprising a polymer and wax, wherein the polymer is an undecanoic acid copolymer, and wherein the release layer has a dry weight of from about 1 to about 3 lb/ream of carrier,
wherein the carrier is substantially devoid of a solvent impermeable coating, such that the release layer is disposed directly on the paper.
2. The heat transfer label assembly of claim 1 , wherein the carrier has a porosity of from about 0.395 to about 0.777 ml/min.
3. The heat transfer label assembly of claim 1 , wherein the release layer has an oil drop absorption of from about 5 to about 10 min.
4. The heat transfer label assembly of claim 1 , wherein the release layer comprises the polymer and wax in a ratio of from about 3:1 to about 1:3 by weight.
5. The heat transfer label assembly of claim 1 , wherein the release layer comprises the polymer and wax in a ratio of about 2:1.
6. The heat transfer label assembly of claim 1 , wherein the wax comprises micronized carnauba wax.
7. The heat transfer label assembly of claim 1 , wherein the label comprises
adhesive for securing the label to a container, the adhesive being distal from the release layer, ink, and
optionally, a protective layer disposed between the ink and the release layer.
8. The heat transfer label assembly of claim 1 , wherein the paper of the carrier has a porosity of at least about 0.28 ml/min, an oil drop absorption of less than about 45 min, and a water vapor transmission rate of at least about 26 g/h m 2 .
9. A heat transfer label assembly comprising;
a label;
a carrier for releasably supporting the label, the carrier comprising a solvent permeable paper; and
a release layer disposed between the label and the carrier, the release layer having a dry weight of less than about 4 lb/ream, wherein the release layer includes a weight ratio of polymer to wax in a range from 3:1 to 1:3;
wherein the polymer is an undecanoic acid copolymer.
10. The heat transfer label assembly of claim 9 , wherein the release layer is disposed directly adjacent to the carrier with no intervening layers.
11. The heat transfer label assembly of claim 9 , wherein the carrier has a water vapor transmission rate of from about 40 to about 60 g/h m2.
12. The heat transfer label assembly of claim 9 , wherein the release layer has a dry weight of from about 1 to about 3 lb/ream of carrier.
13. The heat transfer label assembly of claim 9 , wherein the carrier has an oil drop absorption of from about 5 to about 10 min.
14. The heat transfer label assembly of claim 9 , wherein the release layer comprises the polymer and wax in a ratio of about 2:1.
15. The heat transfer label assembly of claim 9 , wherein the wax comprises micronized carnauba wax.
16. The heat transfer label assembly of claim 9 , wherein the label comprises
adhesive for securing the label to an article, the adhesive being distal from the release layer,
ink, and
optionally, a protective layer disposed between the ink and the release layer.
17. The heat transfer label assembly of claim 9 , wherein the carrier has a porosity of at least about 0.28 ml/min, an oil drop absorption of less than about 45 min, and a water vapor transmission rate of at least about 26 g/h m 2 .