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:
Mar. 24, 1992
Filed:
Nov. 07, 1989
James L Hoogesteger, Wisconsin Rapids, WI (US);
Wayne A Damrau, Wisconsin Rapids, WI (US);
Consolidated Papers, Inc., Wisconsin Rapids, WI (US);
Abstract
A filled supercalender roll is characterized by a plurality of resin impregnated discs that are carried side-by-side on a shaft and form a homogeneous roll body. To make the supercalender roll, a web of woven or nonwoven fibrous material is immersed in and carried through a vat of thermosetting resin to saturate the web with the resin. The resin saturated web is then transported through an oven to partially cure the resin to the B stage, after which the web is cut into a plurality of the discs. The discs are placed side-by-side on the shaft and a collapsible oven is assembled around the discs. The discs are then axially compressed while being heated within the oven to fully cure the resin to the C stage, during which time the collapsible oven decreases in length in accordance with a decrease in the axial length of the axially compressed discs on the shaft as the resin cures. Upon completion of curing of the resin, the discs are fused together and form the homogeneous roll body, which is then finish machined to provide a smooth cylindrical surface on the supercalender roll.