Process for setting a uniform characteristic cross-direction profile for a paper web

Process for setting a uniform characteristic cross-direction profile for a paper web

Process for setting a uniform characteristic cross-direction profile for a paper web with regard to at least formation, basis weight, and fiber orientation in a paper machine. The paper machine can include a headbox with an adjustable die exit opening and within which the consistency is sectionally...

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1. Verfasser: BEGEMANN ULRICH
Format: Patent
Sprache:eng
Schlagworte:
METHODS OF PRODUCING PAPER THEREON
PAPER-MAKING
PAPER-MAKING MACHINES
PRODUCTION OF CELLULOSE
TEXTILES
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creator BEGEMANN ULRICH
description Process for setting a uniform characteristic cross-direction profile for a paper web with regard to at least formation, basis weight, and fiber orientation in a paper machine. The paper machine can include a headbox with an adjustable die exit opening and within which the consistency is sectionally adjustable. The process includes measuring and setting a desired basis weight cross-direction profile by adjusting the sectional consistency in the headbox, adjusting the formation cross-direction profile by adjusting a sectional, specific pulp slurry flow rate at the die exit opening, and one of enlarging the die exit opening at positions along a width of the paper machine in which a pulp slurry flow rate is higher than in other positions along the width of the paper machine and increasing the pulp slurry flow rate for positions along the width at which the die exit opening is larger than at other positions along the width. In this manner, a desired fiber orientation cross-direction profile is attained.
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subjects METHODS OF PRODUCING PAPER THEREON
PAPER-MAKING
PAPER-MAKING MACHINES
PRODUCTION OF CELLULOSE
TEXTILES
title Process for setting a uniform characteristic cross-direction profile for a paper web
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