Method of producing plastic coated metal strip

Details Method of producing plastic coated metal strip Method of producing plastic coated metal strip

1990-02-14

1991-10-22

Pianalto, Bernard

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

264241, 427 55, 427195, 427196, 427289, 427290, 427292, 427293, 427309, 427318, 427327, 4273742, 4273744, 427375, 4273855, 427386, 427424, 4274342, 427435, B05D 104

Patent

active

050594460

ABSTRACT:
Process and apparatus for forming a plastic coating on a metal strip. A metal strip is cleaned, surface treated, coated with an electrostatically charged plastic powder in an enclosed chamber using a plurality of spray guns positioned on both sides of the strip, inductively heated to above the melting point of the powder, and maintained in an infrared heater until the fused powder is flowed into a coating having a smooth surface and a uniform thickness. Thermoplastic and thermosetting coatings, having thicknesses of at least 10 microns formed using total induction and infrared heating times of less than 60 seconds, can be fabricated without cracking.

REFERENCES:
patent: 3396699 (1968-08-01), Beebe et al.
patent: 3439649 (1969-04-01), Probst et al.
patent: 3560239 (1971-02-01), Facer et al.
patent: 4244985 (1981-01-01), Graff et al.
patent: 4325982 (1982-04-01), Gillette et al.
Center for Metals Fabrication, "Short Wave Infrared Curing", 1987, vol. 1, No. 1.

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