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:
May. 28, 2024
Filed:
Jan. 31, 2019
Glatfelter Corporation, Charlotte, NC (US);
Abdus Salam, Harrisburg, NC (US);
Timothy Kistemaker, Mooresville, NC (US);
Glatfelter Corporation, Charlotte, NC (US);
Abstract
A nonwoven fabric comprising a fiber web in an amount of 85-99.99 wt. %, and a cured natural binder in an amount of 0.01-15 wt. %; wherein the fiber web comprises natural fibers and synthetic fibers; wherein natural fibers are present in the nonwoven fabric in an amount of 70-90 wt. %; wherein synthetic fibers are present in the nonwoven fabric in an amount of from 10-30 wt. %; wherein the cured natural binder comprises modified cellulose and a strengthening agent in a weight ratio of strengthening agent to modified cellulose of 1:2 to 1:1,000, wherein modified cellulose comprises CMC and/or sodium CMC, wherein the strengthening agent comprises a crosslinking agent and/or a wet strength agent, wherein the crosslinking agent comprises a carboxylic acid having two or more carboxyl groups, and wherein the wet strength agent comprises a reactive functional group selected from the group consisting of halide, chloride, fluoride, hydroxyl, and combinations thereof.