Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1990-03-26
1992-09-29
Padgett, Marianne
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427178, 427211, 4273881, 4273884, 427406, 427409, 427428, B05D 302, B05D 128, B05D 714
Patent
active
051512971
ABSTRACT:
Zinc or zinc alloy plated steel sheet ready for deep drawing coated with 1-5 gm/m.sup.2 of a dry, tack free continuous thermoplastic acrylic coating. The coating is formed by inductively heating the sheet to a temperature of about 149.degree.-246.degree. C. for no more than 10 seconds after being roll coated with a continuous liquid film of an aqueous solution including an acrylic polymer. The acrylic coating forms a protective film that is impervious to moisture, oil, and dirt, is able to be welded and adhesively bonded and possesses sufficient toughness and lubricity to allow deformation of the sheet without additional external lubricant. A deep drawn article formed from the sheet has enhanced painting characteristics after the acrylic coating is removed and the article is coated with a phosphate coating.
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patent: 3873458 (1975-03-01), Parkenson
patent: 4303537 (1981-12-01), Laepple et al.
patent: 4376024 (1983-03-01), Andersson et al.
patent: 4411145 (1983-10-01), Lewis et al.
patent: 5045361 (1991-09-01), Kerherve
patent: 5055325 (1991-10-01), Trivett
patent: 5061518 (1991-10-01), Langerbeins et al.
Abstract of 57/136977, Japanese Pat. Doc.; Aug. 1982.
Abstract of 63/227,699, Japanese Pat. Doc.; Sep. 1988.
Abstract of 2,488,676, France, Pat. Doc; Feb. 1982.
Gosselin Cynthia A.
Myers Frederick A.
Robbins Douglas J.
Armco Steel Company, L.P.
Bunyard R. J.
Fillnow L. A.
Johnson R. H.
Padgett Marianne
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