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. 29, 1993
Filed:
Dec. 11, 1991
Applicant:
Inventor:
Jukka Salo, Jyvaskyla, FI;
Assignee:
Valmet Paper Machinery Inc., , FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F / ; D21F / ;
U.S. Cl.
CPC ...
162207 ; 100 38 ; 100 / ; 162206 ; 1623591 ; 165 89 ;
Abstract
The surface properties of a roll and/or rolls in a paper machine are affected by regulating the temperature of the roll face by means of an external heating device. In the arrangement, a combination of a heating device and a roll coating is used in such manner that the heating radiation penetrates through the paper or only directly to the roll face, but does not heat the roll itself at a depth greater than the roll face. The roll coating is preferably made of a dark, readily heatable and insulating material. The arrangement of the invention is utilized for example in a calendar and for detaching the paper from a roll.