Composition for car interior trim and preparation method using the same

1. A method of preparing a composition for a car interior trim comprising:

adding a phosphorus-based flame retardant into a resin and dispersing it, thereby preparing a coating agent (step 1);

adding water into the dispersed coating agent and dispersing it at less than 2000 rpm, thereby preparing an aqueous resin (step 2);

adding a thickener into the aqueous resin to control viscosity (step 3)

rotating a polyurethane sponge layer on a roller and coating the aqueous resin thereon (step 4); and

drying the polyurethane sponge layer coated with the aqueous resin (step 5).

2. The method of preparing a composition for a car interior trim according to claim 1 , wherein the step 1 comprises dispersing at high speed of 2000 to 5000 rpm for 20 to 30 minutes.

3. The method of preparing a composition for a car interior trim according to claim 1 , wherein the step 3 comprises adding 1 to 3 parts by weight of the thickener, based on 100 parts by weight of the dispersed aqueous resin.

4. The method of preparing a composition for a car interior trim according to claim 1 , wherein the step 3 comprises adding the thickener into the resin to control viscosity to 3,000 to 6,000 CPS.

5. The method of preparing a composition for a car interior trim according to claim 1 , wherein the step 4 comprises rotating the roller at 10 to 30 m/min and coating the aqueous resin with an amount of 20 to 50 g/m 2 .

6. The method of preparing a composition for a car interior trim according to claim 1 , wherein the step 5 comprises drying at temperature of 130 to 160° C.