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:
May. 12, 1987
Filed:
Jul. 06, 1984
Applicant:
Inventors:
Pertti Haapamaki, Montreal, CA;
Alpo Tuomi, Pori, FI;
Assignee:
Rauma-Repola Oy, Pori, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C / ;
U.S. Cl.
CPC ...
162 56 ; 68158 ; 6818 / ; 162 60 ;
Abstract
Method for the washing of chemical pulp (1) by means of a fourdrinier wire machine in two or more stages (6,10; 6',10'; 6', 10'; 6'', 10'') while the pulp web runs on the wire (3). The liquid contained in the pulp web is displaced by a washing liquid. The pulp web and the wire (3) run, during the washing, as submerged in the washing liquid while the washing liquid flows through the pulp web and the wire. One embodiment comprises passing the washing liquid upwardly through the pulp and then downwardly through the pulp.