Title:
PRECOATED METAL SHEET, METHOD FOR MANUFACTURING PRECOATED METAL SHEET, AND CONTINUOUS COATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/129918
Kind Code:
A1
Abstract:
To purpose of the present invention is to obtain high levels of both the adhesiveness between coatings and the glossiness in a multilayer precoated metal sheet produced on a continuous coating line. A precoated metal sheet having a plurality of coating layers on one or both sides of a metal sheet (10), wherein the coating layers include: a coloring coating layer (111) disposed on the metal sheet (10) side, the coloring coating layer (111) containing a coloring pigment; a pigment-enriched layer (123) formed on the coloring coating layer (111), the pigment-enriched layer (123) having a coloring pigment concentration higher than the average coloring pigment concentration in the coloring coating layer (111), and the coloring pigment concentration increasing towards the obverse layer side; a diffusion layer (122) formed on the pigment-enriched layer (123), the diffusion layer (122) having a coloring pigment concentration that decreases towards the obverse surface side; and a clear layer (121) formed on the diffusion layer (122), the clear layer (121) containing no coloring pigment. The ratio d1/d2 between the thickness d1 of the clear layer (121) and the thickness d2 of the pigment-enriched layer (123) is 1.7≤d1/d2≤4.7.
Inventors:
OTANI MANABU (JP)
SHIBAO FUMIO (JP)
INADA KENJI (JP)
NAKAMURA FUMIAKI (JP)
SHIBAO FUMIO (JP)
INADA KENJI (JP)
NAKAMURA FUMIAKI (JP)
Application Number:
PCT/JP2015/056124
Publication Date:
September 03, 2015
Filing Date:
March 02, 2015
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B32B15/08; B05C5/00; B05C9/06; B05C9/14; B05D3/02; B05D7/14
Domestic Patent References:
| WO2012032894A1 | 2012-03-15 |
Foreign References:
| JP2012125747A | 2012-07-05 | |||
| JP2003211054A | 2003-07-29 | |||
| JP2012516766A | 2012-07-26 | |||
| JPH10510320A | 1998-10-06 | |||
| JP2005177632A | 2005-07-07 |
Attorney, Agent or Firm:
KAMEYA, Yoshiaki et al. (JP)
Yoshiaki Kameya (JP)
Yoshiaki Kameya (JP)
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