COATING FILM FORMATION METHOD AND COATING FILM

摘要

PROBLEM TO BE SOLVED: To provide a method of manufacturing a high quality coating film which is thin and nonetheless has excellent appearance and functional performance, and to provide the high quality coating film.

SOLUTION: A high quality coating film formation method comprises the steps of: forming the coating film by spraying a mixture having a coating film formation ability prepared by dissolving a precursor of a high molecular compound or the high molecular compound in a subcritical or super-critical fluid and applying the mixture onto the surface of an object; and forming the high quality coating film having ≤20 μm thickness and ≤0.8 μm surface roughness Rz obtained by removing the waving by 8 mm cutoff value with respect to a surface shape curve measured by a contact type surface roughness meter. In such a case, the coating condition is controlled so that the viscosity right after formation of the coating film becomes 10-300 mPa sec. A coating film product is also provided. The high quality coating film product having excellent smoothness in which the coating film having ≤0.8 μm surface roughness Rz is formed is provided by high pressure carbon dioxide coating.

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