Kansai Paint Company, Ltd.

Toru Iwamoto

Yutaka Masuda

Tsukasa Fujieda

Haruyuki Gontani

Naoto Yanagidate

Shoichi Shinkoda

This invention provides a method for forming a multilayer coating film that is capable of forming a multilayer coating film that has excellent blackness, high reflectance of an infrared laser, and excellent coating film performance. The method for forming a multilayer coating film includes forming a first colored coating film containing a titanium oxide pigment and in which the diffuse reflectance at a wavelength of 905 nm or diffuse reflectance at a wavelength of 1550 nm, or both, is 40% or more; forming a second colored coating film containing a carbon black pigment (A) and one or more pigments (B), which are a perylene black pigment (B1) or two or more pigments (B2) selected from the group consisting of blue pigments, red pigments, yellow pigments, and green pigments, or both (B1) and (B2); and forming a clear coating film; wherein the multilayer coating film has a lightness L*(45&#xb0;) of 4 or less and a chroma C*(45&#xb0;) of 2 or less, and wherein the diffuse reflectance at a wavelength of 905 nm or the diffuse reflectance at a wavelength of 1550 nm, or both, is 10% or more.

Method for forming multilayer coating film

An approximate blending search system includes a material information database constituted by accumulating names of a plurality of blending materials and property information codes constituted by a plurality of identification codes to which a plurality of pieces of property information on the blending materials are respectively related, a blending composition database constituted by accumulating names of compositions, names, property information codes, and blending quantities of the blending materials constituting the compositions, a prospective composition search unit for approximately searching a corresponding composition from the blending composition data base in accordance with the measurement data input from the input means and/or at least one or more identification codes of the property information codes in an optical blending material, and a display unit for displaying an obtained search result.

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Atsugi, Japan

Toru Iwamoto