Patents by Inventor Walter Movilli

Walter Movilli 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).

  • Publication number: 20080200572
    Abstract: A process for the production of extruded sheets of expanded polystyrene, which only uses expanding agents with low environmental impact, comprising the steps of: a) heating polystyrene or a mixture composed of polystyrene and at least one component selected from the group consisting flame retardants, coloring agents, plasticizers, heat stabilizers and lubricants at a temperature in the range of 180-2500 C thus obtaining a polymer melt, which is subjected to homogenization; b) adding to the polymer melt a mixture of expanding agents comprising carbon dioxide and water; c) homogenizing the polymer melt including said expanding agents; d) homogeneously cooling the polymer melt to a temperature lower than or equal to 1400 C; e) extruding the cooled polymer melt through a die to obtain an expanded polystyrene sheet.
    Type: Application
    Filed: May 29, 2006
    Publication date: August 21, 2008
    Applicant: COOPBOX EUROPE S.P.A.
    Inventors: Walter Movilli, Federico Lanzani
  • Patent number: 4061462
    Abstract: This invention relates to a process for extruding particular shapes in thermoplastic material and, more precisely, flat plates, corrugated plates and the like or, in general, shapes having one section much larger than the other; said process being suited to eliminate the uneven feed of the molten material coming out from a die. This invention relates also to an improved extrusion machine which is particularly useful for carrying out the aforementioned process.
    Type: Grant
    Filed: June 16, 1975
    Date of Patent: December 6, 1977
    Assignee: Montedison S.p.A.
    Inventors: Giancarlo Giannarelli, Walter Movilli