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:
Jan. 30, 2007
Filed:
Jun. 20, 2001
Applicants:
Johan Grön, Espoo, FI;
Kari Sipi, Espoo, FI;
Inventors:
Johan Grön, Espoo, FI;
Kari Sipi, Espoo, FI;
Assignee:
Metso Paper, Inc., Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 19/76 (2006.01); D21H 19/84 (2006.01); B05C 1/08 (2006.01); B05D 1/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
A paper or paperboard web (W) is precalendered. A web that has undergone earlier dewatering stages is calendered to attain a suitable surface for the coating process. The web is calendered (C) one-sidedly in such a manner that the absorption level of the second side (W) of the web entering the calendering, which is higher than the absorption level of the first side (W), is reduced in the calendering nearly to the same level or at least to the same level with the first side (W).