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. 09, 2015
Filed:
Jan. 19, 2012
Xujun Hua, Kirkland, CA;
Makhlouf Laleg, Pointe-Claire, CA;
Keith Miles, Montreal, CA;
Reza Amiri, Kirkland, CA;
Lahoucine Ettaleb, Pointe-Claire, CA;
Gilles Dorris, Vimont Laval, CA;
Xujun Hua, Kirkland, CA;
Makhlouf Laleg, Pointe-Claire, CA;
Keith Miles, Montreal, CA;
Reza Amiri, Kirkland, CA;
Lahoucine Ettaleb, Pointe-Claire, CA;
Gilles Dorris, Vimont Laval, CA;
FPINNOVATIONS, Pointe-Claire, CA;
Abstract
A method to produce on a commercial scale, high aspect ratio cellulose nanofilaments (CNF) from natural lignocellulosic fibers comprises a multi-pass high consistency refining (HCR) of chemical or mechanical fibers using combinations of refining intensity and specific energy. The CNF produced represents a mixture of fine filaments with widths in the submicron and lengths from tens of micrometers to few millimeters. The product has a population of free filaments and filaments bound to the fiber core from which they were produced. The proportion of free and bound filaments is governed in large part by total specific energy applied to the pulp in the refiner, and differs from other cellulose fibrillar materials by their higher aspect ratio and the preserved degree of polymerization (DP) of cellulose, and are excellent additives for the reinforcement of paper, tissue, paperboard and the like. They display exceptional strengthening power for never-dried paper webs.