PVC board and method of manufacture
A novel PVC board and method of manufacture. The board provides shock absorption, temperature-insulation for energy saving, and noise-reduction advantages. The method of manufacture simplifies the production process, and improves production time and efficiency.
1. A board comprising:
a PVC self-priming soft layer;
a PVC thermal insulating layer permanently coupled to the self-priming soft layer;
a film as a presentation layer permanently coupled to the insulating layer;
a transparent wear layer permanently coupled to the insulating layer; and
a polyurethane (PU) top layer;
wherein the thermal insulating layer is a composite layer having three layers, including first and third layers made according to a first formula, and a second layer made according to a second formula, wherein the first formula comprises by weight:
100 parts of polyvinyl chloride (PVC) resin;
0-10 parts PVC elastic impact modifier;
100-200 parts of calcium carbonate;
5-7 parts calcium and zinc complex stabilizer; and
1.0-2.0 parts lubricant;
and wherein the second formula comprises by weight: 100 parts of polyvinyl chloride (PVC) resin;
0-10 parts PVC elastic impact modifier;
100-150 parts calcium carbonate;
5-8 parts calcium and zinc compound stabilizer;
0.2-1.0 parts foaming agent;
0-8 parts foam adjusting agent; and
1.0-2.0 parts lubricant.
2. The board of claim 1 , wherein the PU layer is formed independently of other layers as a separate layer.
3. The board of claim 1 , wherein the PU layer is formed by spraying liquid PU on a top surface of another layer.
4. The board of claim 1 , wherein at least one surface of the board is embossed.
5. The board of claim 1 , wherein:
the presentation layer simulates the appearance of a building material that is not PVC, and
the top surface of the wear layer is embossed prior to application of the PU layer with a texture simulating the texture of the building material simulated by the presentation layer.