Importance

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Abstract

The present invention is directed to an apparatus for coating a surface of a 2-D or 3-D extrusion material, which comprises a rail unit installed on a base with an elastic member interposed therebetween to be elastically and vertically movable, thereby serving to isolate a coating surface and a non-coating surface from each other while elastically supporting the delivered 2-D or 3-D extrusion material; a coating unit for applying a certain amount of coating liquid to the specific coating surface of the extrusion material at random; and an air knife for blowing air at a constant pressure to the coating liquid applied onto the extrusion material and diffusing the coating liquid to apply the coating liquid at a uniform thickness on the coating surface of the extrusion material. Further, the present invention is also directed to a method for coating a surface of a 2-D or 3-D extrusion material, comprising the steps of applying a certain amount of a coating material to the specific surface of the 2-D or 3-D extrusion material at random; coating the surface of the extrusion material with the coating liquid at an uniform thickness by blowing air at a constant pressure to the coating liquid applied onto the extrusion material and diffusing the coating liquid, wherein the coating liquid is prevented from flowing in the non-coating surface by blowing air from the non-coating surface to the coating surface of the extrusion material; and curing the coating liquid by applying heat or irradiating ultraviolet rays to the coating liquid.

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First Claim