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. 20, 2019
Filed:
Nov. 11, 2016
Applicant:
Stowe Woodward Licensco, Llc, Raleigh, NC (US);
Inventors:
Jun Xu, Frederick, MD (US);
Christopher Hill, Strasburg, VA (US);
Christopher Tyson, Clear Brook, VA (US);
Charles Hunter, Winchester, VA (US);
Assignee:
Stowe Woodward Licensco LLC, Youngsville, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21G 1/02 (2006.01); B32B 27/40 (2006.01); B32B 5/02 (2006.01);
U.S. Cl.
CPC ...
B32B 27/40 (2013.01); B32B 5/02 (2013.01); D21G 1/0233 (2013.01);
Abstract
A calender roll for a papermaking machine includes: a substantially cylindrical core; and a cover circumferentially surrounding the core. The cover comprises a base layer circumferentially overlying the core; and a topstock layer comprising polyurethane circumferentially overlying the base layer, the topstock layer being fiber reinforced, the polyurethane having a glass transition temperature of between about 120 and 150° C., the topstock layer having a hardness of 70 to 90 ShD.