Patents Assigned to Polyester Fibers, LLC
  • Patent number: 8668758
    Abstract: The present disclosure relates generally to a nonwoven filtration media comprising a bonded mix of different, discontinuous, thermoplastic resin fibers and optionally discontinuous cellulosic fibers. In some embodiments a tackifier is added to the nonwoven filtration media to provide a sticky or adhesive surface on the fibers. The nonwoven media has an advantageous combination of stiffness, foldability, efficiency and the ability to retain a fold. The nonwoven media can be thermally bonded during the production process. The advantageous combination of mechanical properties allow the disclosed nonwoven media to accept and retain folds and pleats better than some conventional filtration materials while the mix of different fibers provides desirable filtration properties.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: March 11, 2014
    Assignee: Polyester Fibers, LLC
    Inventors: Leonard Duello, Thomas Hawkins, Christopher Peart, Nathaniel Nance