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    • 3. 发明专利
    • Steel sheet coated with fluororesin, and manufacturing method therefor
    • 涂有氟菊酯的钢板及其制造方法
    • JP2007070682A
    • 2007-03-22
    • JP2005258218
    • 2005-09-06
    • Jfe Galvanizing & Coating Co LtdJfe鋼板株式会社Okitsumo Kkオキツモ株式会社
    • SAKAMOTO YASUHEIYAMATO KOJITOYONAGA TAKASHIKATO HIROYOSHI
    • C23C28/00B05D1/38B05D7/14B05D7/24B32B15/082
    • PROBLEM TO BE SOLVED: To provide a steel sheet coated with a fluororesin which has adequate adhesiveness to the steel sheet having a surface treatment layer containing no chromium and is superior in corrosion resistance, lubricity, heat resistance and baked-stain resistance (unstickiness), and to provide a method for manufacturing the coated steel sheet by baking the steel sheet at a low temperature in an ultrashort period of time.
      SOLUTION: The steel sheet coated with a fluororesin comprises: a steel sheet; the surface treatment layer containing no chromium formed on the surface; a primer layer containing 1 to 20 pts.mass of a silane coupling agent with respect to 100 pts.mass of a resin mainly containing a polyethersulfone resin; and the top layer mainly containing a polytetrafluoroethylene resin and the polyethersulfone resin. The manufacturing method comprises the steps of: forming the primer layer by baking it at the maximal arrival temperature for the steel sheet of 410°C or lower for 120 seconds or shorter; and forming the top layer at the maximal arrival temperature for the steel sheet of 410°C or lower for 120 seconds or shorter.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种涂覆有对具有不含铬的表面处理层的钢板具有适当粘附性并且耐腐蚀性,润滑性,耐热性和耐烤渍性优异的氟树脂的钢板( 不稳定),并且提供一种通过在超短时间内在低温下烘烤钢板来制造涂覆钢板的方法。 < P>解决方案:涂覆有氟树脂的钢板包括:钢板; 在表面上不含铬的表面处理层; 相对于主要含有聚醚砜树脂的树脂100重量份的硅烷偶联剂,含有1〜20重量份的底漆层; 顶层主要含有聚四氟乙烯树脂和聚醚砜树脂。 该制造方法包括以下步骤:通过在410℃以下的钢板的最高到达温度下烘烤120秒以下,形成底漆层; 并且在410℃或更低的钢板的最大到达温度下形成120秒或更短的顶层。 版权所有(C)2007,JPO&INPIT