Press stable method of cleaning paper machine press fabrics on-the-run
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United States of America Patent
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Oct 6, 2009
Grant Date -
Apr 17, 2008
app pub date -
Oct 11, 2006
filing date -
Oct 11, 2006
priority date (Note) -
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Abstract
A method of cleaning papermaking felt by applying a low concentration of a cleaning solution through the oscillating needle nozzles. The detergent is applied intermittently while paper is being manufactured. Each cleaning period lasts for at least the length of time required for the nozzles to cover the entire surface of the felt, and preferably twice that period of time. The application of cleaning solution is then discontinued for a period of time, generally equal to the time the cleaning detergent is applied to the felt. This cycle is repeated continuously as the paper is being manufactured. The chemistry of the cleaning solution can be changed, for example, from acidic to basic, alternately, to enhance cleaning performance.
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