Fpinnovations

Resolute Fp US Inc.

Reza Amiri

Mark Andrews

Makhlouf Laleg

Gilles Marcel Dorris

Xujun Hua

Lahoucine Ettaleb

Keith Miles

Frank Charbonneau

Gary Cothran

Shaune Hanley

Rafik Allem

Waleed Wafa Al Dajani

A process for producing cellulosic fiber with a high curl index is disclosed. The process can include mechanically treating and chemically crosslinking kraft pulp. The mechanical treatment of the pulp can include convolving and mechanically treating a pulp at in a plug screw and steam tube at temperatures above 100&#xb0; C. and pressures above 3 bar. The mechanically treated pulp can be crosslinked with a crosslinking agent. The product fiber can exhibit a curl index of greater than 0.35, and can be at least 50% higher than the initial curl of the starting pulp material.

Methods for producing a cellulosic fiber having a high curl index and acquisition and distribution layer containing same

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.

High aspect ratio cellulose nanofilaments and method for their production

Growing community of inventors

Kirkland, Canada

Reza Amiri