Heat transfer label having a UV layer
View Patent ↗A heat transfer label and method for preparing same, the heat transfer label including (a) a support portion and (b) a transfer portion over the support portion, for transfer of the transfer portion from the support portion to an article upon application of heat to the support portion while the transfer portion is placed into contact with the article. The transfer portion includes at least a protective lacquer layer, an ink layer, and an adhesive layer, wherein at least one of the protective lacquer layer, the ink layer, and the adhesive layer is UV-curable. Further, the heat transfer label may additionally include a tie-coat layer, which may be a UV-curable tie-coat layer. Further, each of the plurality of layers of the transfer portion of the heat transfer label may be UV-curable.
1. A heat transfer label comprising:
(a) a support portion; and
(b) a transfer portion over said support portion for transfer of the transfer portion from the support portion to an article upon application of heat to the support portion while the transfer portion is placed into contact with the article, said transfer portion including at least:
a solvent-based protective lacquer layer consisting of an acrylic resin in an amount of 25 wt % to 35 wt %, isopropanol in an amount of 55 wt % to 65 wt %, and ethyl acetate in an amount of 5 wt % to 15 wt %;
an ink layer;
a solvent-based adhesive layer adapted to confront the article, wherein the adhesive layer consists of a polyamide resin in an amount of 30 wt % to 40 wt %, nitrocellulose in an amount of 0.1 wt % to 2 wt %, isopropanol in an amount of 50 wt % to 60 wt %, and ethyl acetate in an amount of 4 wt % to 8 wt %; and
a structural tie-coat layer disposed between said adhesive layer and said ink layer;
wherein said tie-coat layer comprises at least one polyfunctional acrylate so that the tie-coat layer can be UV cured.
2. The heat transfer label of claim 1 , wherein the ink layer includes a UV-curable ink.
3. The heat transfer label of claim 2 , wherein the UV-curable ink includes polyfunctional components.
4. The heat transfer label of claim 3 , wherein the UV-curable ink includes polyfunctional acrylates in an amount greater than 30 wt % of the UV-curable ink.
5. The heat transfer label of claim 4 , wherein the UV-curable ink includes polyfunctional acrylates in an amount of 65 wt % to 95 wt % of the UV-curable ink and a photoinitiator in an amount of 1 wt % to 20 wt % of the UV-curable ink.
6. The heat transfer label of claim 1 , wherein the UV-curable tie-coat layer includes a UV-curable ink extender and a UV-curable heat activated adhesive.
7. The heat transfer label of claim 6 , wherein the UV-curable ink extender is present in an amount of 50% to 99% by weight of the UV-curable tie-coat layer.
8. The heat transfer label of claim 6 , wherein the UV-curable heat activated adhesive is present in an amount of 1-50% by weight of the UV-curable tie-coat layer.
9. A heat transfer label comprising:
(a) a support portion; and
(b) a transfer portion over said support portion for transfer of the transfer portion from the support portion to an article upon application of heat to the support portion while the transfer portion is placed into contact with the article, said transfer portion including at least:
a solvent-based protective lacquer layer consisting of an acrylic resin in an amount of 25 wt % to 35 wt %, isopropanol in an amount of 55 wt % to 65 wt %, and ethyl acetate in an amount of 5 wt % to 15 wt %;
an ink layer;
a solvent-based adhesive layer adapted to confront the article, wherein the adhesive layer consists of a polyamide resin in an amount of 30 wt % to 40 wt %, nitrocellulose in an amount of 0.1 wt % to 2 wt %, isopropanol in an amount of 50 wt % to 60 wt %, and ethyl acetate in an amount of 4 wt % to 8 wt %; and
a structural tie-coat layer disposed between said adhesive layer and said ink layer;
wherein each of the protective lacquer layer and adhesive layer are UV-curable, and each of the ink layer and tie-coat layer comprises at least one polyfunctional acrylate so that each of the ink layer and tie-coat layer can be UV-cured.
10. The heat transfer label of claim 9 , wherein the UV-curable ink includes polyfunctional components.
11. The heat transfer label of claim 10 , wherein the UV-curable ink includes polyfunctional acrylates in an amount greater than 30 wt % of the UV-curable ink.
12. The heat transfer label of claim 11 , wherein the UV-curable ink includes polyfunctional acrylates in an amount of 65 wt % to 95 wt % of the UV-curable ink and a photoinitiator in an amount of 1 wt % to 20 wt % of the UV-curable ink.
13. The heat transfer label of claim 9 , wherein the UV-curable tie-coat layer includes a UV-curable ink extender and a UV-curable heat activated adhesive.
14. The heat transfer label of claim 13 , wherein the UV-curable ink extender is present in an amount of 50% to 99% by weight of the UV-curable tie-coat layer.
15. The heat transfer label of claim 13 , wherein the UV-curable heat activated adhesive is present in an amount of 1-50% by weight of the UV-curable tie-coat layer.
16. A heat transfer label comprising:
(a) a support portion; and
(b) a transfer portion over said support portion for transfer of the transfer portion from the support portion to an article upon application of heat to the support portion while the transfer portion is placed into contact with the article, said transfer portion including at least:
a solvent-based protective lacquer layer consisting of an acrylic resin in an amount of 25 wt % to 35 wt %, isopropanol in an amount of 55 wt % to 65 wt %, and ethyl acetate in an amount of 5 wt % to 15 wt %;
an ink layer;
a solvent-based adhesive layer adapted to confront the article, wherein the adhesive layer consists of a polyamide resin in an amount of 30 wt % to 40 wt %, nitrocellulose in an amount of 0.1 wt % to 2 wt %, isopropanol in an amount of 50 wt % to 60 wt %, and ethyl acetate in an amount of 4 wt % to 8 wt %; and
a structural tie-coat layer disposed between said adhesive layer and said ink layer;
wherein said tie-coat layer is UV-curable, and wherein said tie-coat layer is adjacent and in confronting relationship with said adhesive layer, and adjacent and in confronting relationship with said ink layer.
17. A heat transfer label comprising:
(a) a support portion; and
(b) a transfer portion over said support portion for transfer of the transfer portion from the support portion to an article upon application of heat to the support portion while the transfer portion is placed into contact with the article, said transfer portion including at least:
a solvent-based protective lacquer layer consisting of an acrylic resin in an amount of 25 wt % to 35 wt %, isopropanol in an amount of 55 wt % to 65 wt %, and ethyl acetate in an amount of 5 wt % to 15 wt %;
an ink layer;
a solvent-based adhesive layer adapted to confront the article, wherein the adhesive layer consists of a polyamide resin in an amount of 30 wt % to 40 wt %, nitrocellulose in an amount of 0.1 wt % to 2 wt %, isopropanol in an amount of 50 wt % to 60 wt %, and ethyl acetate in an amount of 4 wt % to 8 wt %; and
a UV-cured structural tie-coat layer disposed between said adhesive layer and said ink layer;
wherein said tie-coat layer is UV-cured from the exposure of at least an oligomer component, at least one polyfunctional acrylate, and a photoinitiator component to UV light.