D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 2/00 (2006.01) D21F 1/48 (2006.01) D21F 1/52 (2006.01) D21F 7/00 (2006.01) D21F 11/00 (2006.01)
Patent
CA 2214298
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.
Ensign Donald Eugene
Trokhan Paul Dennis
Sim & Mcburney
The Procter & Gamble Company
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