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:
Nov. 24, 2020
Filed:
May. 19, 2015
Applicant:
Gpcp Ip Holdings Llc;
Inventor:
Jeffrey A. Lee, Neenah, WI (US);
Assignee:
GPCP IP HOLDINGS LLC, Atlanta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C 9/16 (2006.01); D21C 9/147 (2006.01); D21H 27/00 (2006.01); D21H 21/32 (2006.01); D21H 17/67 (2006.01); D21H 11/12 (2006.01); D04H 1/492 (2012.01); D04H 1/56 (2006.01); D04H 3/015 (2012.01); D04H 3/11 (2012.01); D04H 3/16 (2006.01); A47L 13/16 (2006.01); A47L 13/17 (2006.01); D06B 1/00 (2006.01); D04H 1/425 (2012.01); D04H 1/4266 (2012.01); D06L 4/30 (2017.01); D21H 21/30 (2006.01); D21C 5/00 (2006.01); D06L 4/13 (2017.01);
U.S. Cl.
CPC ...
D21C 9/163 (2013.01); A47L 13/16 (2013.01); A47L 13/17 (2013.01); D04H 1/425 (2013.01); D04H 1/4266 (2013.01); D04H 1/492 (2013.01); D04H 1/56 (2013.01); D04H 3/015 (2013.01); D04H 3/11 (2013.01); D04H 3/16 (2013.01); D06B 1/00 (2013.01); D06L 4/13 (2017.01); D06L 4/30 (2017.01); D21C 5/00 (2013.01); D21C 9/147 (2013.01); D21C 9/16 (2013.01); D21C 9/166 (2013.01); D21H 11/12 (2013.01); D21H 17/67 (2013.01); D21H 17/675 (2013.01); D21H 21/30 (2013.01); D21H 21/32 (2013.01); D21H 27/00 (2013.01); D21H 27/004 (2013.01); D10B 2201/01 (2013.01); D10B 2201/02 (2013.01); D10B 2201/04 (2013.01); D10B 2201/06 (2013.01); D10B 2201/08 (2013.01); Y10T 442/60 (2015.04);
Abstract
The present invention is directed to a method of increasing the brightness of non-wood fibers and nonwoven fabric fabrics produced by the method. In one aspect, the method includes forming a mixture of non-wood fibers and exposing the mixture to a brightening agent to produce brightened fibers. The brightening agent is oxygen gas, peracetic acid, a peroxide compound, or a combination thereof. The brightened fibers have a brightness greater than the fibers of the mixture before exposure as measured by MacBeth UV-C standard.