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:
Jun. 17, 2008
Filed:
Nov. 24, 2004
Applicants:
Timo Koskinen, Grand Rapids, MN (US);
Kaj Koskinen, Valkeakoski, FI;
Pekka Aho, Jämsänkoski, FI;
Seppo Särelä, Valkeakoski, FI;
Inventors:
Timo Koskinen, Grand Rapids, MN (US);
Kaj Koskinen, Valkeakoski, FI;
Pekka Aho, Jämsänkoski, FI;
Seppo Särelä, Valkeakoski, FI;
Assignee:
UPM-Kymmene Corporation, , FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 19/78 (2006.01); D21H 19/12 (2006.01); D21H 19/82 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a method for manufacturing base paper for release paper, the body layer, which is formed of a fibre raw material, is surface sized with a surface treatment agent. Before the surface sizing, the body layer, whose moisture level is at least 13 wt. %, is calendered in a calender that comprises at least one nip formed between a hard-faced roll and a soft counter surface.