Patents Assigned to Yuwa Sangyo KK
  • Patent number: 4524562
    Abstract: A method and apparatus for making a cylindrical package in which a cylindrically shaped coil of a long steel strip having a peripheral surface, two end surfaces and a hollow cylindrical center is completely wrapped with a wrapping sheet material so as to have neatly folded closures on both end surfaces with a ring member inserted into the cylindrical hollow center of the coil. At first the wrapping sheet is wrapped around the coil so as to project from either end of the coil by a length l greater than the thickness t between the outermost layer and the innermost layer of the coil. The projecting portions are folded onto the end surfaces by pusher plates with pleat forming rods provided therebetween to form crease lines.
    Type: Grant
    Filed: April 14, 1982
    Date of Patent: June 25, 1985
    Assignee: Yuwa Sangyo KK
    Inventors: Yoshio Yagi, Toshihiko Kondo, Norio Matsubara, Shoichiro Miyazaki, Hajime Kashiyama, Makoto Shibata