Method and system for controlling headbox in a paper/board machine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6770171
APP PUB NO 20030056918A1
SERIAL NO

10168490

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Abstract

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A paper/board machine headbox (10) has a stock inlet header (J), a tube bank (11), a turbulence generator (13) and a slice opening (14) which is provided with a profile bar. The headbox (10) is provided with cross direction measuring sensors (D.sub.1, D.sub.2 ; D.sub.mn), by means of which the flow rate profile of the headbox (10) is determined, and the profile bar of the slice opening (14) of the headbox (10) is adjusted in the cross direction on the basis of the thus determined flow rate profile. The headbox (10) is provided with measuring sensors (D.sub.1, D.sub.2 ; D.sub.mn) for determining the cross direction flow rate profile of the headbox (10) and with means for adjusting the profile bar on the basis of the flow rate profile.

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Patent Owner(s)

Patent OwnerAddress
VALMET TECHNOLOGIES INCKEILASATAMA 5 ESPOO FI-02150

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hamalainen, Jari P Palokka, FI 10 179
Lepomaki, Hannu Laukka, FI 6 18
Lumiala, Juhana Jyvaskyla, FI 7 29
Sirvio, Pasi Jyvaskyla, FI 1 6

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