Composite solid surface article with a backing and method of forming the same

1. A composite solid surface article, comprising:

a surface layer including an acrylic resin or an unsaturated polyester resin, and including a first filler; and

a backing layer including about 100 parts by weight of a mixture of an acrylic monomer and a polyacrylate, and including about 10 to about 240 parts by weight of a mixture of wood particles and a second filler,

wherein the backing layer is laminated onto the surface layer to form a single body, and the backing layer has a foam structure.

2. The composite solid surface article as claimed in claim 1 , wherein the wood particles include one or more of wood chips, wood flakes, sawdust, and bran.

3. The composite solid surface article as claimed in claim 1 , wherein the surface layer further comprises marble chips.

4. The composite solid surface article as claimed in claim 1 , wherein the acrylic monomer is one of a methyl acrylate, an ethyl acrylate, a butyl acrylate, a methyl methacrylate, an ethyl methacrylate, an isopropyl methacrylate, a butyl methacrylate, and a 2-ethylhexyl methacrylate.

5. The composite solid surface article as claimed in claim 1 , wherein the second filler of the backing layer includes one or more of a calcium carbonate, an aluminum hydroxide, a silica, an alumina, and a magnesium hydroxide.

6. The composite solid surface article as claimed in claim 1 , wherein the mixture of the wood particles and the second filler in the backing layer includes about 5 to 160 parts by weight of wood particles and about 5 to about 80 parts by weight of the filler.

7. A composite solid surface structure, comprising:

a composite solid surface article as claimed in claim 1 ; and

a supporting panel attached to the composite solid surface article.

8. The structure as claimed in claim 7 , wherein the structure is one or more of a wall, a table, a desk, a workstation, and a countertop.

9. A method of making a composite solid surface article, the method comprising:

partially curing a curable composition including an acrylic resin or an unsaturated polyester resin, and including a first filler, to form a surface layer;

pouring a polymerizable composition including about 100 parts by weight of a mixture of an acrylic monomer and a polyacrylate, and including about 10 to 240 parts by weight of a mixture of wood particles and a second filler, onto the surface layer to form a backing layer;

foaming the polymerizable composition by an exothermic polymerization reaction of the acrylic monomer; and

curing the surface layer and the backing layer to form a composite solid surface article.

10. The method as claimed in claim 9 , wherein the wood particles include one or more of wood chips, wood flakes, sawdust, and bran.

11. The method as claimed in claim 9 , wherein the wood particles are formed by one or more of wood cutting, wood milling, and wood sawing.

12. The method as claimed in claim 9 , wherein the curable composition further includes marble chips.

13. The method as claimed in claim 9 , wherein the acrylic monomer is one of a methyl acrylate, an ethyl acrylate, a butyl acrylate, a methyl methacrylate, an ethyl methacrylate, an isopropyl methacrylate, a butyl methacrylate, and a 2-ethylhexyl methacrylate.

14. The method as claimed in claim 9 , wherein the second filler of the backing layer is one or more selected from the group consisting of calcium carbonate, aluminum hydroxide, silica, alumina, and magnesium hydroxide.

15. The method as claimed in claim 9 , wherein the mixture of wood particles and the second filler in the backing layer includes about 5 to about 160 parts by weight of wood particles and about 5 to about 80 parts by weight of the second filler.

16. The method as claimed in claim 9 , wherein the polymerizable composition has a fluidity from about 13 cm/min to about 20 cm/min before foaming.