D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 5/18 (2006.01) D21F 5/00 (2006.01) D21F 7/12 (2006.01)
Patent
CA 2369401
A device and a method used for ventilating an offset pocket space located in a drying section of a papermaking machine by injecting air from a heated dry air supply inlet are described, the offset pocket space being situated between a set of three axially-parallel drying cylinders over which consecutively runs a paper web. The device comprises a first air outlet where a first air stream is directed into a cleft defined where the felt rejoins the felt roll, and a second air outlet where a second air stream is directed in close proximity to the felt at a location which is upstream of the cleft. In use, the device and the corresponding method allow the first air stream to flow through the felt and lift the paper web away from the felt so as to reach the offset pocket space. The second air stream creates an air curtain to lower the pressure in a zone between the first and the second air outlet.
Thifault Dominique
Turcotte Remi
Enerquin Air Inc.
Goudreau Gage Dubuc
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