Patents Assigned to ARIOWIGGINS SECURITY
  • Crumple-resistant security sheet, a method of manufacturing such a sheet, and a security document including such a sheet
    Patent number: 10023998
    Abstract: The present invention relates to a crumple-resistant security sheet comprising fibers; an anionic polymer in a proportion lying in the range 5% to 45% by dry weight relative to the total dry weight of the fibers, and presenting a glass transition temperature greater than 40° C.; and a main cationic flocculation agent in a quantity lying in the range 1% to 5% by dry weight relative to the total dry weight of the fibers.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: July 17, 2018
    Assignee: ARIOWIGGINS SECURITY
    Inventor: Henri Rosset