D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 11/04 (2006.01)
Patent
CA 2348533
The invention concerns multi-layer web formation by means of a simple basic- stock system and in particular a method for regulation of the properties of the different layers in a stock system that comprises several layers by means of additional stocks. The source (M) of basic stock is divided into 2...n separate component flows (M l...M n), with which additional stocks (B l...B n) are mixed so as to form homogeneous mixtures with the basic stock, and the homogeneous stock flows are passed further by means of pumps (A l...A n) through machine screens (s l ...S n) into the inlet header of a multi-layer headbox (P).
L'invention concerne la formation d'une bande multicouches au moyen d'un système simple de stock de base, en particulier un procédé qui permet de réguler les propriétés des différentes couches dans un système de stock composé de plusieurs couches au moyen de stocks supplémentaires. La source (M) du stock de base est divisée en 2...n écoulements séparés (M1...Mn), les stocks supplémentaires (B1...Bn) étant mélangés de façon à former des mélanges homogènes avec le stock de base. On fait ensuite passer les écoulements du stock homogène à travers des tamis (S1...Sn) dans un collecteur d'amenée de la caisse de tête multicouches.
Metso Paper Inc.
Sim & Mcburney
LandOfFree
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