Patents Assigned to Sun Aluminium Industries, Ltd.
  • Patent number: 7914898
    Abstract: The present invention provides a resin-coated metal plate suitable as a cover plate for use in perforating a printed-wiring board with a drill, capable of effectively preventing the heat generation of drill bits and the scattering of chips while sufficiently performing lubrication and discharging the chips, to highly efficiently form a high-quality perforated-hole with excellent smoothness of the inner wall thereof while reducing the risk of breakage of the drill and eliminating any surface tackiness to achieve excellent operating performance and storage stability. The resin-coated metal plate of the present invention comprising a metal base plate, and a film made of a thermoplastic resin and formed on at least one of the opposite surfaces of said metal base plate to cover thereover, said thermoplastic resin being substantially water-insoluble, wherein said thermoplastic resin has: a melting peak temperature measured according to JIS K7121 ranging from 60° C. to 120° C.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: March 29, 2011
    Assignees: Kabushiki Kaisha Kobe Seiko Sho, Sun Aluminium Industries, Ltd.
    Inventors: Eiichiro Yoshikawa, Naoya Fujiwara, Yasuhiro Okamura