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:
Apr. 23, 2019
Filed:
Apr. 01, 2016
Resolute Fp Us Inc., Catawba, SC (US);
Shaune Hanley, Montreal-Ouest, CA;
Mark Andrews, Childersburg, AL (US);
Frank Charbonneau, Barhamsville, VA (US);
Gary Cothran, West Point, VA (US);
Reza Amiri, Kirkland, CA;
Rafik Allem, Pointe-Claire, CA;
Waleed Wafa Al Dajani, Pierrefonds, CA;
Resolute FP US Inc., Catawba, SC (US);
Abstract
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° 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.