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. 26, 2007
Filed:
Aug. 23, 2001
Tapio Mäenpää, Helsinki, FI;
Kalle Hasu, Järvenpää, FI;
Matti Lares, Helsinki, FI;
Pekka Koivukunnas, Järvenpää, FI;
Tapio Mäenpää, Helsinki, FI;
Kalle Hasu, Järvenpää, FI;
Matti Lares, Helsinki, FI;
Pekka Koivukunnas, Järvenpää, FI;
Metso Paper, Inc., Helsinki, FI;
Abstract
The invention relates to a method for controlling a surface quality variable () in one or more fiber webs () in a shoe calender () comprising one or more calender nips. In each calender nip of the shoe calender, the overall loading pressure of the shoe element () and the loading pressure difference between the leading edge (') and the trailing edge (″) of the shoe element are controlled so as to achieve minimum difference between the determined values (″) for the surface quality variables of the fiber web and the set values (′) for the same quality variables after the shoe calender.