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:
Dec. 24, 2002
Filed:
May. 12, 2000
Klaus Prechtel, Heidenheim, DE;
Ingolf Cedra, Heidenheim, DE;
Voith Sulzer Papiertechnik Patent GmbH, Heidenheim, DE;
Abstract
Backwater cycle of and process for circulating water in a paper machine having a wet zone. The backwater cycle includes at least one application device arranged to apply a composition containing at least one of pigment and filler onto a fiber web in the wet zone, a first backwater cycle that supplies a stock inlet with backwater removed from the production process upstream, relative to a web travel direction, of the at least one application device, and a second backwater cycle that accepts a remainder of the backwater. The process includes extracting backwater from the fiber web, and feeding backwater, which is not charged with the at least one of pigments and fillers, to a stock inlet.