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. 02, 2009
Filed:
Jun. 07, 2004
Juha Lipponen, Kerava, FI;
Pekka Pakarinen, Jyväskylä, FI;
Juha Pakarinen, Jyväskylä, FI;
Kari Holopainen, Muurame, FI;
Juhani Vestola, Jyväskylä, FI;
Arto Tuomi, Järvenpää, FI;
Juha Lipponen, Kerava, FI;
Pekka Pakarinen, Jyväskylä, FI;
Juha Pakarinen, Jyväskylä, FI;
Kari Holopainen, Muurame, FI;
Juhani Vestola, Jyväskylä, FI;
Arto Tuomi, Järvenpää, FI;
Metso Paper, Inc., Helsinki, FI;
Abstract
An applicator device () applies surface size to at least one side of a web (W). A pressure effect is applied to the web (W) by subjecting the web (W) to an underpressure and/or to an overpressure such that surface size is forced to penetrate into the pores of the web. Most advantageously, an underpressure is created that sucks applied surface size from the surface of the web (W) into the pores in the inner layers. Surface size is applied to a web first side (W) and a vacuum effect is applied to the web's opposite side (W2) to cause air to flow through the web (W) such that surface size moves from the first side (W) in the direction of the second side (W) into the web (W). Correspondingly, both sides of the web (W) can be treated in successive stages.