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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.:

US 11331830 B1

PDFFull Text
Date of Patent:
May. 17, 2022

Filed:

Nov. 16, 2016

Process for producing fiber-polymer composites

Applicant:

Stora Enso Oyj, Helsinki, FI;

Inventors:

Johan Kallstrom, Hyltebruk, SE;

Fredrik Kallstrom, Hyltebruk, SE;

Martin Malmqvist, Halmstad, SE;

Roger Bergstrom, Hyltebruk, SE;

Conny Johansson, Laholm, SE;

Maria Tornblom, Halmstad, SE;

Sofi Karlsson, Burseryd, SE;

Assignee:

Stora Enso OYJ, Helsinki, FI;

Attorney:

Greer, Burns & Crain, Ltd.

Primary Examiner:

Jeffrey M Wollschlager

Int. Cl.
CPC ...
B29B 9/06 (2006.01); B29C 70/12 (2006.01); D21H 11/08 (2006.01); B29B 7/94 (2006.01); B29B 7/92 (2006.01); B29B 7/60 (2006.01); B29B 7/90 (2006.01); B29B 9/14 (2006.01); B29C 48/00 (2019.01); B29B 15/08 (2006.01); B29B 13/06 (2006.01); B27N 1/02 (2006.01); B29B 7/46 (2006.01); B29C 31/02 (2006.01); B29C 48/285 (2019.01); B29K 101/12 (2006.01); B29K 105/00 (2006.01); B29K 511/14 (2006.01);
U.S. Cl.
CPC ...
B29B 9/06 (2013.01); B29B 7/603 (2013.01); B29B 7/905 (2013.01); B29B 7/92 (2013.01); B29B 7/94 (2013.01); B29B 9/14 (2013.01); B29B 13/06 (2013.01); B29B 15/08 (2013.01); B29C 48/0022 (2019.02); B29C 70/12 (2013.01); D21H 11/08 (2013.01); B27N 1/02 (2013.01); B29B 7/46 (2013.01); B29C 31/02 (2013.01); B29C 48/285 (2019.02); B29C 48/287 (2019.02); B29K 2101/12 (2013.01); B29K 2105/0005 (2013.01); B29K 2511/14 (2013.01);
Abstract

The present invention relates to a process for the manufacturing of composite materials from natural fibers and thermoplastic polymers. Examples of fibers are wood fibers originating from pulping processes known as refiner pulp (RMP), thermomechanical pulp (TMP) or chemi-thermomechanical pulp (CTMP), but the process can also be applied to other kinds of natural fiber containing raw materials. In the process according to the present invention, fibers are introduced from the blowline or the housing of a refiner into a flash tube dryer, separated from humid air in a cyclone, introduced into a compounder and mixed with at least one thermoplastic polymer and the product is subsequently pelletized. The process according to the present invention is advantageously run as a continuous process.

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Kallstrom, Johan. (2022). Process for producing fiber-polymer composites (U.S. Patent No. 11331830). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11331830

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