Paper making and fiber liberation – Apparatus – Web creping or crinkling type
Patent
1997-08-26
1999-04-06
Chin, Peter
Paper making and fiber liberation
Apparatus
Web creping or crinkling type
162111, 162207, 162280, 162363, 34110, 34122, B31F 112, F26B 1102
Patent
active
058913092
ABSTRACT:
A web support foil positioned adjacent to a Yankee dryer above a creping doctor. The foil supports the web as it leaves the dryer. Mounted to the top of the foil is an adjustable air deflector which is positioned tangent to the Yankee dryer. The air deflector blocks air moving along the web. A slotted opening draws air from a leading-edge pocket collecting fibers which are broken loose during the creping action. The web is held against the bottom side of the foil by one or more air jets which are directed over the bottom surface on the foil. The jets of air function as coanda air jets and prevent the web from sticking to the bottom surface of the foil while creating a Bernoulli effect which holds the web against the bottom of the foil.
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Brown Dale A.
Kramer Gerald J.
Page Robert E.
Smith David A.
Beloit Technologies Inc.
Campbell Raymond W.
Chin Peter
Leavitt Steven B.
Mathews Gerald A.
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