Multilayered structure with water-impermeable substrate
View Patent ↗In accordance with the present invention, there is provided a multi-layered structure includes: a) a water-impermeable substrate; b) a first layer on at least one surface of the substrate comprising a water-based tie-layer composition; c) a second layer formed over the first layer, wherein the second layer is a water-based ink-receptive composition includes: i) a multivalent metal salt; and ii) a hydrophilic binder polymer; d) a third layer including at least one water-based ink composition deposited in a single pass by an inkjet printing process, wherein the water-based ink composition includes an anionically stabilized, water-dispersible pigment; and e) additional layers deposited over the one or more ink layers and exposed second layer, the additional layers selected from one or more of the following compositions: i) an opaque white layer; ii) a protective layer; and iii) an adhesive layer, further includes a continuous protective plastic or paper layer adhered thereto.
1. A multilayered structure comprising:
a) a water-impermeable substrate;
b) a first layer on at least one surface of the substrate comprising a water-based tie-layer composition;
c) a second layer formed over the first layer, wherein the second layer is a water-based ink-receptive composition comprising:
i) a multivalent metal salt; and
ii) a hydrophilic binder polymer;
d) a third layer including at least one water-based ink composition deposited in a single pass by an inkjet printing process, wherein the water-based ink composition comprises an anionically stabilized, water-dispersible pigment; and
e) additional water-based layers deposited over the one or more ink layers and exposed second layer, the additional layers selected from one or more of the following compositions:
i) an opaque white layer;
ii) a protective layer; and
iii) an adhesive layer, further comprising a continuous protective plastic or paper layer adhered thereto,
wherein the dry coverage of the second layer is less than 1.5 g/m 2 .
2. The multilayered structure of claim 1 , wherein the water-impermeable substrate is selected from polyesters, polyimides, polycarbonates, polystyrenes, polyolefins, polyurethanes, polyvinyl acetates, polyvinyl chlorides, polyvinylidene chlorides, and copolymers, mixtures, co-extrudates, or laminates thereof.
3. The multilayered structure of claim 1 , wherein the water-based tie-layer comprises polyvinyl alcohol, polyvinyl amine, gelatin, poly(ethyleneimine), epoxy resins, polyurethane, polyacrylamide, and derivatives, copolymers, and blends thereof.
4. The multilayered structure of claim 1 , wherein the water-based tie-layer comprises a polymer or copolymer comprising 50 to 100 mole percent of glycidyl acrylate or glycidyl methacrylate monomers.
5. The multilayered structure of claim 1 , wherein the water-based tie-layer comprises two sub layers, the first water-based tie-sub-layer comprising poly(ethyleneimine) and epoxy resins modified with an acidified aminoethylated vinyl polymer, and a second water-based tie-sub-layer, which is applied on top of the first sub-layer, is a cross-linked poly(vinyl alcohol) polymer.
6. The multilayered structure of claim 1 , wherein the multivalent metal salt is a calcium or magnesium salt and the hydrophilic polymer binder is a cross-linked poly(vinyl alcohol).
7. The multilayered structure of claim 1 , wherein the water-based ink composition comprises less than 10 wt % water miscible co-solvent.
8. The multilayered structure of claim 1 , wherein the anionically stabilized, water-dispersible pigment is dispersed with an anionic polymer comprising carboxylate functionality.
9. The multilayered structure of claim 1 , wherein the opaque white layer composition is a water-based white flexographic ink.
10. The multilayered structure of claim 1 , wherein the opaque white layer composition is a water based white inkjet ink.
11. The multilayered structure of claim 1 , wherein the protective layer composition is a water-based polyurethane.
12. The multilayered structure of claim 1 , wherein the adhesive layer composition is a solventless two-part water-based polyurethane resin with an epoxy resin cross linker applied in combination with a second water-impermeable substrate.
13. The multilayered structure of claim 12 , wherein the second water-impermeable substrate is selected from polyesters, polyimides, polycarbonates, polystyrenes, polyolefins, polyurethanes, polyvinyl acetates, polyvinyl chlorides, polyvinylidene chlorides, and copolymers, mixtures, co-extrudates, or laminates thereof.
14. The multilayered structure of claim 9 further comprising the protective layer composition wherein the protective layer composition is a water-based polyurethane.
15. The multilayered structure of claim 9 further comprising the adhesive layer composition wherein the adhesive layer composition is a solventless two-part water-based polyurethane resin with an epoxy resin cross linker applied in combination with a second water-impermeable substrate.
16. The multilayered structure of claim 12 , wherein the lamination bond strength is >1.0 N/cm.
17. The multilayered structure of claim 12 , wherein the lamination bond strength is >1.5 N/cm.
18. The multilayered structure of claim 1 , wherein the second layer comprises between 0.05 g/m 2 and 1.0 g/m 2 of the hydrophilic binder polymer, and the weight ratio of the multivalent metal salt to the hydrophilic binder polymer is between 2.5:1 and 0.75:1.