Coated metal fastener
    32.
    发明授权
    Coated metal fastener 失效
    镀金属紧固件

    公开(公告)号:US4964774A

    公开(公告)日:1990-10-23

    申请号:US414793

    申请日:1989-09-29

    摘要: A metal fastener, suitable for use in wood construction and coated with a polymeric residue produced by removing water from an aqueous dispersion of a film-forming, thermoplastic, predominately aliphatic polyurethane resin, thereby to reduce penetration force, increase withdrawal force, and protect against corrosion. 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.

    摘要翻译: 一种金属紧固件,适用于木结构,并涂有聚合物残余物,通过从成膜,热塑性,主要为脂肪族聚氨酯树脂的水分散液中除去水分,从而降低穿透力,提高抽出力,防止 腐蚀。 在涂覆聚氨酯涂层之前,施加锌层以涂覆紧固件,并施加铬酸盐转化层以涂覆锌层。