Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...
Patent
1996-09-03
1998-04-21
Hastings, Karen M.
Paper making and fiber liberation
Apparatus
Running or indefinite length product forming and/or treating...
162306, 162364, D21F 148
Patent
active
057414025
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 comprises a plurality of sequenced vacuum sections successively spaced in the machine direction from a first vacuum section to a last vacuum section. Each vacuum section comprises at least one vacuum slot in fluid communication with the web-facing surface and defining an aperture thereon. Each vacuum section has a vacuum applied therethrough, this vacuum increasing in the machine direction between successive vacuum sections.
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Ensign Donald Eugene
Trokhan Paul Dennis
Hastings Karen M.
Huston Larry L.
Linman E. Kelly
The Procter & Gamble & Company
Vitenberg Vladimir
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