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:
Nov. 20, 2001
Filed:
Apr. 25, 2000
Edward Charles Small, Aberdeen, GB;
Ian Harper MacMaster, Aberdeenshire, GB;
Abstract
A method of producing a two-color mottle-effect patterned paper comprises the steps of coloring a papermaking stock by means of a first dye formulation, draining the resulting colored stock through a papermaking wire to produce a dyed wet paper web, subjecting the web to pressure, applying a second dye formulation to the paper web, said second dye formulation being of a different hue from the first dye formulation, and drying the web. The web is preferably subjected to pressure by passage through a smoothing press nip before passing to the drying section of the papermachine. The smoothing press can be one of the presses of the press section of the papermachine, run in unfelted mode. The second dye formulation is preferably applied at the papermachine size press or by spraying.