Rigid multilayer tile and production method thereof

1. A rigid multilayer tile comprising a foam cushion layer, a reinforcing layer, an intermediate support layer on the reinforcing layer or the foam cushion layer, a printed layer on the intermediate support layer;

wherein the foam cushion layer comprises one or more polymer resins selected from the group consisting of polyethylene resin, polypropylene resin, ABS resin, polyvinyl chloride resin, acrylic resin, polyester resin, polystyrene resin, polytetrafluoroethylene, ethylene-vinyl acetate copolymers, ethylene-propylene copolymers, and thermoplastic polyurethane (TPU);

wherein the foam cushion layer contains 0 to 20 phr of a plasticizer, 0 to 300 phr of a filler, and 0 to 5 phr of a foaming agent;

wherein the foam cushion layer has an expansion ratio of 120 to 300%;

wherein the reinforcing layer comprises a rigid core layer;

wherein the rigid core layer comprises one or more polymer resins selected from the group consisting of polyethylene resin, polypropylene resin, ABS resin, polyvinyl chloride resin, acrylic resin, polyester resin, polystyrene resin, polytetrafluoroethylene, ethylene-vinyl acetate copolymers, ethylene-propylene copolymers, and thermoplastic polyurethane (TPU);

wherein the thickness of the reinforcing layer is 0.2 to 7 mm;

wherein the rigid core layer contains 0 to 20 phr of a plasticizer and 0 to 500 phr of a filler;

wherein the polymer resin contained in the foam cushion layer is the same as the polymer resin contained in the reinforcing layer, and the reinforcing layer is in direct contact with the foam cushion layer;

wherein the layers are bonded to each other without using an adhesive; and

wherein the foam cushion layer and the reinforcing layer are formed into a sheet at once by extrusion without using an adhesive.

2. The rigid multilayer tile of claim 1 , wherein the foam cushion layer comprises a composite of the polymer resin with a wood chip or a cork chip, wherein the content of the chip in the foam cushion layer is 1 to 40 phr.

3. The rigid multilayer tile of claim 1 , wherein the reinforcing layer is disposed on or beneath, or on and beneath the foam cushion layer.

4. The rigid multilayer tile of claim 3 , wherein each of the layers is bonded to an adjacent layer by heat bonding.

5. The rigid multilayer tile of claim 1 , further comprising an upper support layer on the printed layer.

6. The rigid multilayer tile of claim 5 , wherein each of the layers is bonded to an adjacent layer by heat bonding.

7. The rigid multilayer tile of claim 1 , further comprising a dimension-stabilizing layer between the reinforcing layer and the intermediate support layer or between the foam cushion layer and the intermediate layer.

8. The rigid multilayer tile of claim 7 , wherein each of the layers is bonded to an adjacent layer by heat bonding.

9. The rigid multilayer tile of claim 1 , further comprising a lower support layer beneath the foam cushion layer or the reinforcing layer.

10. The rigid multilayer tile of claim 9 , wherein each of the layers is bonded to an adjacent layer by heat bonding.

11. A method for producing the rigid multilayer tile of claim 1 , the method comprising:

(a) preparing raw materials for a foam cushion layer;

(b) preparing raw materials for a reinforcing layer; and

(c) extruding the raw materials described in (a) and (b) at once into one sheet;

wherein the foam cushion layer comprises one or more polymer resins selected from the group consisting of polyethylene resin, polypropylene resin, ABS resin, polyvinyl chloride resin, acrylic resin, polyester resin, polystyrene resin, polytetrafluoroethylene, ethylene-vinyl acetate copolymers, ethylene-propylene copolymers, and thermoplastic polyurethane (TPU);

wherein the foam cushion layer contains 0 to 20 phr of a plasticizer, 0 to 300 phr of a filler, and 0 to 5 phr of a foaming agent;

wherein the foam cushion layer has an expansion ratio of 120 to 300%;

wherein the reinforcing layer comprises a rigid core layer;

wherein the rigid core layer comprises one or more polymer resins selected from the group consisting of polyethylene resin, polypropylene resin, ABS resin, polyvinyl chloride resin, acrylic resin, polyester resin, polystyrene resin, polytetrafluoroethylene, ethylene-vinyl acetate copolymers, ethylene-propylene copolymers, and thermoplastic polyurethane (TPU); and

wherein the rigid core layer contains 0 to 20 phr of a plasticizer and 0 to 500 phr of a filler.

12. The method of claim 11 , further comprising preparing an upper support layer and a printed layer by a calendering process.

13. The method of claim 12 , further comprising, after preparing the upper support layer and the printed layer, sequentially laminating a printed layer and an upper support layer over the foam cushion layer and the reinforcing layer, and heat-bonding each of the laminated layers.