Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...
Patent
1996-09-03
1998-02-17
Hastings, Karen M.
Paper making and fiber liberation
Apparatus
Running or indefinite length product forming and/or treating...
162306, 162364, 162374, D21F 148
Patent
active
057188068
ABSTRACT:
A papermaking vacuum apparatus having a web-facing surface adapted to support a papermaking belt and comprising a head, a body and at least one vacuum slot disposed in the head and defining an aperture on the web-facing surface. The vacuum slot is in fluid communication with the web-facing surface and extends from the web-facing surface to the body which is in further fluid communication with a vacuum source. The vacuum apparatus has a flow management device facing said web-contacting surface of the papermaking belt and disposed such that the papermaking belt having the paper web thereupon travels between the flow management device and the web-facing surface of the head. The flow management device has an air flow resistance and controls the distribution of the air flow through the aperture on the web-facing surface such as to effectively increase in the machine direction the amount of vacuum pressure applied through the vacuum slot to the papermaking belt.
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Ayers Peter Graves
Ensign Donald Eugene
Trokhan Paul Dennis
Hastings Karen M.
Huston Larry L.
Linman E. Kelly
Rasser Jacobus C.
The Procter & Gamble & Company
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