Method and apparatus in the surface sizing of a paper or board web

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7540941
APP PUB NO 20060124263A1
SERIAL NO

10559598

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An applicator device (1) 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.sub.1) 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.sub.1) in the direction of the second side (W.sub.2) into the web (W). Correspondingly, both sides of the web (W) can be treated in successive stages.

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Patent Owner(s)

  • VALMET TECHNOLOGIES, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Holopainen, Kari Muurame, FI 30 120
Lipponen, Juha Kerava, FI 35 205
Pakarinen, Juha Jyväskylä , FI 3 4
Pakarinen, Pekka Jyväskylä , FI 10 115
Tuomi, Arto Järvenpää , FI 1 7
Vestola, Juhani Jyväskylä , FI 21 139

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