| 摘要 |
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.
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