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:
Aug. 02, 2011
Filed:
Oct. 25, 2006
Jouko Aula, Muurame, FI;
Peter Hardén, Poitsila, FI;
Pekka Moilanen, Espoo, FI;
Pasi Moilanen, Legal Representative, Espoo, FI;
Jouko Aula, Muurame, FI;
Peter Hardén, Poitsila, FI;
Pekka Moilanen, Espoo, FI;
Pasi Moilanen, legal representative, Espoo, FI;
Metso Paper, Inc., Helsinki, FI;
Abstract
A web-forming section of a paper or board machine has a first web-forming unit with a first fiber layer (W) formed on a first wire (); a second web-forming unit with a second fiber layer (W) formed on a second wire (); and a couch shoe () over a curved deck () of which the fiber layers (W, W) are guided for joining them together. The second fiber layer (W) is brought to the couch shoe () at an angle (α) of less than 20°, advantageously less than 15° in relation to the approach direction of the first fiber layer (W). The couch shoe () is provided with underpressure and the radius of curvature of its deck () is usually larger than the radius of curvature of a guide roll () preceding it. By the couch shoe, the fiber layers can be joined together wetter than usual.