Coated metal fastener and method for making same

Details Coated metal fastener and method for making same Coated metal fastener and method for making same

1990-07-23

1993-01-12

Lusignan, Michael

Coating processes

Spray coating utilizing flame or plasma heat

4273884, 427405, 427406, 427409, 427435, 427456, B05D 108

Patent

active

051789035

ABSTRACT:
A metal fastener, suitable for use in connection with wood construction and coated with a polymeric residue produced by removing water from an aqueous dispersion of a film-forming, thermoplastic, predominantly aliphatic polyurethane resin, so as to thereby reduce penetration force, increase withdrawal force, and protect against corrosion, is disclosed. Before the polyurethane coating is applied, a zinc layer is applied so as to coat the fastener, and a chromate conversion layer is applied so as to coat the zinc layer.

REFERENCES:
patent: 3853606 (1974-12-01), Parkinson
patent: 4307000 (1991-12-01), Vasta
patent: 4452834 (1984-06-01), Nachtkamp et al.
patent: 4837090 (1989-06-01), Hyner et al.
patent: 4897231 (1990-01-01), Schearer et al.
patent: 4964774 (1990-10-01), Lat et al.

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