Method and an apparatus for the feeding of a fibre suspension on

Details Method and an apparatus for the feeding of a fibre suspension on Method and an apparatus for the feeding of a fibre suspension on

1982-02-22

1984-02-21

Alvo, Steve

Paper making and fiber liberation

Processes and products

Running or indefinite length work forming and/or treating...

162336, 162340, 162343, D21F 106

Patent

active

044328354

ABSTRACT:
A method and apparatus for feeding a fibre suspension onto the wire of a web former through a guiding device consisting of a plurality of guiding channels through which the fibre suspension flows parallelly and which are connected to a slice chamber leading to a slice and extending across the wire of the web former. A means for separating the dilute outer part of the jet of stock flowing in from every single flow channel is disposed downstream of the guiding device. The outer portion is deflected from the direction of flow of the thicker and more homogeneous core part and the latter is allowed to proceed up to the lip substantially maintaining its direction. Thus, a situation is reached, whereby considerably less local consistency variations occur in the lip flow across the head box. Preferably, this means is formed by a plate in which there are openings disposed coaxially with regard to the manifold tubes so that the diameter of the openings of the plate is smaller than that of the openings of the tubes.

REFERENCES:
patent: 3216892 (1965-11-01), Wahlstrom et al.
patent: 3923593 (1975-12-01), Verseput
patent: 4294657 (1981-10-01), Saito et al.

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