The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2022
Filed:
Sep. 20, 2016
Stora Enso Oyj, Helsinki, FI;
University of Maine System Board of Trustees, Bangor, ME (US);
Duncan Mayes, Helsinki, FI;
Janne Pynnonen, Lempaala, FI;
Christopher H West, Detroit, ME (US);
Douglas J Gardner, Brewer, ME (US);
Yousoo Han, Bangor, ME (US);
Stora Enso OYJ, Helsinki, FI;
University of Maine System Board of Trustees, Bangor, ME (US);
Abstract
The present invention relates to a method of making a foamed cellulosic fiber-thermoplastic composite article. The method includes the steps of providing a copolymer composition, combining the copolymer composition and cellulosic fibers, applying heat, mixing energy and pressure to form a foamable mixture, and forming the foamable article in a molding or extruding operation. The method is characterized in that at least 10% of the cellulosic fibers have been thermally modified prior to being combined with the copolymer composition.