Engineered waterproof flooring and wall covering planks

1. An engineered waterproof plank comprising:

(a) a veneer layer adhered to a top surface of a waterproof core, wherein the veneer layer is selected from the group consisting of wood veneer, cork veneer, bamboo veneer, tile veneer, stone veneer, rubber veneer, decorative plastic veneer, linoleum veneer and decorative vinyl veneer

(b) a first waterproof adhesive layer bonding the veneer layer to the top surface of the waterproof core;

(c) the waterproof core comprising an extruded dust and plastic composite;

(d) the plank having a first edge with a groove extending laterally into the waterproof core and a second opposite edge with a lateral protrusion from the waterproof core, wherein the groove and protrusion have profiles shaped to form a click-lock edge fastening system.

2. The plank of claim 1 further comprising an underlayer selected from the group consisting of cork, rubber, foam and waterproof balance paper.

3. The plank of claim 2 further comprising a second waterproof adhesive layer bonding the underlayer to a bottom surface of the waterproof core.

4. The plank of claim 1 further comprising a cover layer over the veneer layer.

5. The plank of claim 1 wherein said veneer layer encapsulated in resin to render the veneer layer waterproof and wear resistant.

6. The plank of claim 1 veneer layer, said cover layer selected from the group consisting of melamine resin with aluminum oxide and polyurethane.

7. The plank of claim 1 wherein exposure to moisture results in swelling of plank dimensions by less than 0.01%.

8. The plank of claim 1 wherein the first waterproof adhesive layer further comprises a hot melt adhesive.

9. The plank of claim 1 wherein the waterproof core further comprises calcium carbonate filler.

10. The plank of claim 1 wherein the waterproof core comprises:

(i) at least about 55% of dust selected from the group consisting of wood, bamboo, cork and a combination of two or more of wood, bamboo and cork; and

(ii) at least about 20% of plastic selected from the group consisting of high-density polyethylene and polyvinyl chloride.

11. The plank of claim 10 wherein the waterproof core further comprises less than 10% of additives selected from the group consisting of anti-oxidation agents, stabilizers, colorants, anti-fungus agents, coupling agents, reinforcing agents and lubricants.

12. An engineered rectangular waterproof plank comprising:

(a) a veneer layer of decorative vinyl adhered to a top surface of a waterproof core by a hot melt adhesive;

(b) a cover layer over the veneer layer, said cover layer selected from the group consisting of melamine resin with aluminum oxide and polyurethane;

(c) an underlayer selected from the group consisting of cork, rubber and foam, said underlayer adhered to a bottom surface of the waterproof core by a hot melt adhesive;

(d) the waterproof core comprising an extruded dust and plastic composite, said waterproof core having substantially planar top and bottom surfaces separated by a thickness defining a first edge along a first side and a second edge along an opposite second side, and third and fourth edges along opposite third and fourth sides, wherein the first edge has a groove extending laterally into the waterproof core and the second opposite edge has a lateral protrusion from the waterproof core, the groove and protrusion having profiles shaped to form a click-lock edge fastening system.

13. The plank of claim 12 wherein the static coefficient of friction of the plank is at least 0.60 as measured according to ASTM C 1028-96.

14. The plank of claim 12 wherein exposure to moisture results in swelling of plank dimensions by less than 0.01%.

15. The plank of claim 12 wherein the waterproof core comprises:

(i) at least about 55% of dust selected from the group consisting of wood, bamboo, cork and a combination of two or more of wood, bamboo and cork; and

(ii) at least about 20% of plastic selected from the group of high-density polyethylene and polyvinyl chloride.

16. The plank of claim 15 wherein the waterproof core further comprises less than 10% of additives selected from the group consisting of anti-oxidation agents, stabilizers, colorants, anti-fungus agents, coupling agents, reinforcing agents and lubricants.

17. The plank of claim 15 wherein the waterproof core further comprises calcium carbonate filler.

18. An engineered rectangular waterproof plank comprising:

(a) a veneer layer selected from the group consisting of cork veneer, bamboo veneer and wood veneer, said veneer layer encapsulated in resin, and said veneer layer adhered to a top surface of a waterproof core by a hot melt adhesive;

(b) an underlayer selected from the group consisting of cork, rubber and foam, said underlayer adhered to a bottom surface of the waterproof core by a hot melt adhesive;

(c) the waterproof core comprising:

(i) at least about 55% of dust selected from the group consisting of wood, bamboo and cork and a combination of two or more of wood, bamboo and cork;

(ii) at least about 20% of high-density polyethylene; and

(iii) calcium carbonate filler;

(d) said waterproof core having substantially planar top and bottom surfaces separated by a thickness defining an edge along opposite first and second sides, and along opposite third and fourth sides, wherein a groove extends laterally into the waterproof core along the first edge and a lateral protrusion extends from the opposite second edge of the waterproof core, the groove and protrusion comprising a click-lock edge fastening system.

19. An engineered waterproof plank comprising:

(a) a wear layer adhered to a top surface of a waterproof core;

(b) a first waterproof adhesive layer bonding the wear layer to the top surface of the waterproof core;

(c) the waterproof core comprising an extruded dust and plastic composite;

(d) a cover layer over the wear layer, said cover layer selected from the group consisting of melamine resin with aluminum oxide and polyurethane;

(e) the plank having a first edge with a groove extending laterally into the waterproof core and a second opposite edge with a lateral protrusion from the waterproof core, wherein the groove and protrusion have profiles shaped to form a click-lock edge fastening system.

20. The plank of claim 19 wherein the wear layer is selected from the group consisting of tile veneer, stone veneer, rubber, decorative plastic, linoleum and decorative vinyl.

21. The plank of claim 19 further comprising an underlayer selected from the group consisting of cork, rubber, foam and waterproof balance paper.

22. An engineered waterproof plank comprising:

(a) a wear layer adhered to a top surface of a waterproof core;

(b) a first waterproof adhesive layer bonding the wear layer to the top surface of the waterproof core;

(c) the waterproof core comprising an extruded dust and plastic composite;

(d) the plank having a first edge with a groove extending laterally into the waterproof core and a second opposite edge with a lateral protrusion from the waterproof core, wherein the groove and protrusion have profiles shaped to form a click-lock edge fastening system; and

(e) wherein exposure to moisture results in swelling of plank dimensions by less than 0.01%.

23. The plank of claim 22 wherein the wear layer is selected from the group consisting of tile veneer, stone veneer, rubber, decorative plastic, linoleum and decorative vinyl.

24. The plank of claim 22 further comprising an underlayer selected from the group consisting of cork, rubber, foam and waterproof balance paper.