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:
Aug. 18, 2020
Filed:
Jun. 27, 2018
Kimberly-clark Worldwide, Inc., Neenah, WI (US);
Daniel Keith Lawson, Owensboro, KY (US);
Eric Kent Isom, Jr., Appleton, WI (US);
Kenneth John Zwick, Neenah, WI (US);
Robert James Seymour, Appleton, WI (US);
Craig Steven Besaw, Stevens Point, WI (US);
Christopher Lee Satori, Hortonville, WI (US);
Peter John Allen, Neenah, WI (US);
Mark Alan Burazin, Oshkosh, WI (US);
KIMBERLY-CLARK WORLDWIDE, INC., Neenah, WI (US);
Abstract
Methods of improving the drying rate of a cellulosic web, such as a tissue web, by providing an apparatus having two noncompressive dewatering devices, such as two through-air driers, where the temperature of the drying medium supplied to each device is separately controlled. The temperature of the medium supplied to the first device may exceed 450° F., such as from about 450 to about 600° F. On the other hand the temperature of the medium supplied to the second device may be less than the temperature supplied to the first, such as from about 350 to 450° F. Drying the web in this manner not only improves drying efficiency, but also limits or prevents degradation of the web, such as the combustion of cellulosic fibers making up the web or monosaccharides associated therewith. As such, webs that are substantially free from furan and acetaldehyde may be produced by the present methods.