Matte substrate
View Patent ↗Matte substrates comprising a water based coating composition and a base substrate. The water based coating composition comprises either no or only small amounts of mineral filler, refractory filler and/or organic filler and no other matting agents. The water based coating composition is typically applied to the base substrate at a coating weight of less than or equal to about 3 dry pounds of the water based coating composition per about 3,000 square feet of the base substrate. The matte substrate generally has a 60° gloss less than about 20.
1. A matte substrate comprising
a) a dried film formed from a water based coating composition comprising
a water base consisting of the combination of (a) a polyurethane dispersion, wherein the polyurethane dispersion comprises a water based aliphatic urethane, carboxyl or sulfonate functionality and less than about 2% N methyl pyrrolidone and (b) a binder comprising an acrylic resin; and
one or more cross-linking agents; and
b) a base substrate having a thickness of about 0.02 mil to about 25 mil selected from the group consisting of polyamide, polyester, polypropylene, polyethylene, polyvinyl chloride, styrene, foil, paper, paperboard and combinations thereof, wherein the matte substrate has a 60° gloss less than about 20;
wherein part a) is absent the addition of a mineral filler, refractory filler, organic filler, or combinations thereof.
2. The matte substrate of claim 1 wherein the one or more cross-linking agents are selected from the group consisting of aziridine, carboiimides, isocyanates, silanes, multivalent cation solutions, organometallic compounds and combinations thereof.
3. The matte substrate of claim 1 wherein the water based coating composition further comprising flow promoters, adhesion promoters or gloss enhancers.
4. The matte substrate of claim 1 wherein the water based coating composition further comprising a material selected from the group consisting of thickeners, antifoaming agents, flocculents, slip additives, wax additives and optical brighteners.
5. The matte substrate of claim 1 wherein the base substrate has a surface energy greater than about 38 dynes/cm 2 .
6. The matte substrate of claim 1 comprising a first down adhesion promoter layer having a first down adhesion promoter.
7. The matte substrate of claim 1 made by applying the water based coating composition to the base substrate at a coating weight of less than or equal to about 3 dry pounds of the water based coating composition per about 3,000 square feet of the base substrate.
8. The matte substrate of claim 7 wherein the coating weight is less than or equal to about 2.4 dry pounds of the water based coating composition per about 3,000 square feet of the base substrate.
9. The matte substrate of claim 1 wherein the water based coating composition does not curl the base substrate.
10. The matte substrate of claim 1 wherein the water based coating composition has soft touch.
11. The matte substrate of claim 1 wherein the water based coating composition is self healing.
12. The matte substrate of claim 1 comprising printing on the dried film of the water base coating composition.
13. The matte substrate of claim 1 comprising a dried film of an overcoat wherein the overcoat comprises one selected from the group consisting of an overcoat water base, an energy curable material and combinations thereof.
14. A laminated material comprising the matte substrate of claim 1 and a second material.
15. The laminated material of claim 14 wherein the second material is thermal heat sealing layer or an adhesive.
16. An over laminate material comprising the laminated material of claim 14 and an over laminated substrate.
17. The over laminate material of claim 16 wherein the over laminated substrate is selected from the group consisting of metal, wood, paper, paperboard and plastic.
18. A cover material comprising the over laminate of claim 16 and a printed substrate.