Arrangement for feeding stock to a headbox in a papermaking machine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6030500
SERIAL NO

09221081

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An arrangement for feeding stock to a headbox in a papermaking machine which comprises at least one stock header with an inlet for receiving stock into the header and a plurality of stock header outlets permitting stock to leave the header. For each stock header outlet there is a stock conduit downstream of the stock header outlet permitting stock to pass from the stock header outlet, through the conduit to the inlet of the headbox. The arrangement includes a dilution header for feeding a diluent such as water to a plurality of stock conduits. The dilution header has an inlet for receiving a diluent not the dilution header and a plurality of outlets permitting the diluent to leave the dilution header. For each dilution header outlet, there is a diluent conduit permitting the passage of a diluent from the dilution header into a stock conduit. According to the invention, the diluent is fed into a stock conduit at a location immediately downstream of a stock header outlet and the stock header together with the stock header outlets is designated such that the velocity of the stock flowing through the stock header is substantially equal to the velocity of the stock in an upstream end of the stock conduits.

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Patent Owner(s)

Patent OwnerAddress
VALMET ABSE-851 94 SUNDSVALL

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Haraldsson, N Ulf A Karlstad, SE 2 14
Huovila, Jyrki M Muurame, FI 2 14
Klerelid, Ingvar B E Karlstad, SE 3 20
Tornefalk, Louise M Karlstad, SE 2 14

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