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:
Dec. 23, 2014
Filed:
Sep. 26, 2012
Applicant:
Weyerhaeuser Nr Company, Federal Way, WA (US);
Inventors:
Andrew J. Dodd, Seattle, WA (US);
Andre S. Hajnal, Anderson Island, WA (US);
Assignee:
Weyerhaeuser NR Company, Federal Way, WA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21C 3/00 (2006.01); B02C 7/00 (2006.01);
U.S. Cl.
CPC ...
B02C 7/00 (2013.01);
Abstract
A process for making a fibrillated blend of lyocell and cellulose pulp fibers in which a blend of lyocell and cellulose pulp fibers is provided. The lyocell is from 25% to 75% of the total weight of the blend of lyocell and cellulose pulp fibers. The blend is refined in a high shear field device to provide a blend of fibrillated lyocell and pulp fibers having a diameter of 10 to 500 nanometers and a fiber length of 50 to 500 μm. The high shear field device can be a homogenizer or colloid mill.