Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1993-03-24
1995-02-07
Zimmerman, John
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428626, B32B 1508
Patent
active
053874730
ABSTRACT:
A steel sheet plated with zinc or a zinc alloy carries a chromate film formed on each side thereof and having a coating weight of 1 to 200 mg/m.sup.2 in terms of metallic chromium, and a black film formed at least on the chromate film on one side thereof. The black film contains 100 parts by weight of a thermosetting resin which is soluble in an organic solvent, 1 to 200 parts by weight of a black dye which is also soluble in an organic solvent, and 1 to 100 parts by weight of organic resin particles. It may further contain 1 to 100 parts by weight of fine inorganic particles, or a solid lubricant, or both. The black film has a thickness of 0.3 to 5.0 microns which is sufficiently small to permit the welding of the sheet, and yet has an excellently black surface. The organic resin particles, etc., which are used as a matting agent, give the film a surface of low gloss which resists visible staining by fingerprints.
REFERENCES:
patent: 4948678 (1990-08-01), Shindou et al.
patent: 4981759 (1991-01-01), Nakatani et al.
patent: 5110689 (1992-05-01), Watanabe et al.
patent: 5141822 (1992-08-01), Matsuo et al.
Hawley, Gessner. The Condensed Chemical Dictionary 10th ed (1981) pp. 919-920.
Watanabe Toyofumi
Yamashita Masaaki
Yoshimi Naoto
NKK Corporation
Zimmerman John
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