The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 1984
Filed:
Feb. 22, 1982
Tapio Waris, Kyminlinna, FI;
Sven-Eric E Lindroos, Karhula, FI;
A. Ahlstrom Osakeyhtio, Noormarkku, FI;
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.