Patents by Inventor Michael S. Angell

Michael S. Angell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus and process for polygonal melt-blowing die assemblies for making high-loft, low-density webs
    Patent number: 5645790
    Abstract: There is disclosed a novel apparatus and process for melt-blowing fiberforming thermoplastic polymers at high rates to form high-loft, low density fine fiber webs suitable for insulation applications. The high rates are achieved by mounting melt-blowing spinnerettes on the surfaces of a polygonal cylinder and spinning fibers in a radial fashion, then deflecting the fiber streams 90 degrees by a secondary stream of cold air.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: July 8, 1997
    Assignee: Biax-Fiberfilm Corporation
    Inventors: Eckhard C. A. Schwarz, Douglas B. Brown, Michael S. Angell