Adhesive label with water-based release coating
View Patent ↗An adhesive label with a water-based release coating and methods for applying the water-based release coating to the adhesive label are provided. The water-based release coating is a non-silicon based formulation having a fluorochemical. The water-based release coating can be applied in a single-pass process or a double-pass process when manufacturing the adhesive label.
1. An adhesive label comprising:
a substrate;
an adhesive on at least a portion of a back surface of the substrate; and
a water-based release coating applied to a front surface of the substrate with a formulation of a fluorochemical, wherein the fluorochemical is water miscible and has a C-6 backbone with a hydrophilic tail and a hydrophobic tail, and wherein the formulation of the fluorochemical in the water-based release coating is applied instead of a silicone release coating.
2. The adhesive label of claim 1 further comprising, a thermal print layer pre-coated to the front surface of the substrate before the water-based release coating formulation.
3. The adhesive label of claim 1 , wherein the water-based release coating formulation includes starch.
4. The adhesive label of claim 1 , wherein the water-based release coating formulation includes one or more of: polyvinyl alcohol (PVOH), polyvinyl acetate (PVA), sizing agent, clay, silica, precipitated calcium carbonate (PCC), thickener, and rheology modifier.
5. The adhesive label of claim 1 , wherein the water-based release coating formulation is cured on the substrate.
6. The adhesive label of claim 1 , wherein the water-based release coating formulation is dried on the substrate with one or more of: a conventional dryer, an Infrared dryer, and a microwave dryer.
7. The adhesive label of claim 6 , wherein a drying temperature depends on a coat weight for the water-based coating formulation.
8. The adhesive label of claim 7 , wherein the drying temperature ranges from about 150 F.° to 240 F.°.
9. The adhesive label of claim 1 , wherein the water-based release coating formulation is applied onto the front surface by a sprayer.
10. The adhesive label of claim 1 , wherein the water-based release coating formulation is applied to with a press.
11. The adhesive label of claim 10 , wherein the press is anilox rollers.