B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
189/68, 183/99
B01D 46/52 (2006.01) B01D 29/01 (2006.01) B01D 46/14 (2006.01) B29C 65/00 (2006.01) B29C 65/02 (2006.01) B29C 65/18 (2006.01)
Patent
CA 2017138
Filter cartridge, in particular with a block-like shape, comprising a plurality of fold walls created by folding a permeable filter medium in a zig-zag fashion and which is provided with offsets formed by scoring so that a medium to be filtered passes through from one edge area of the zig-zag folding in the direction of the edge area of the folding on the opposite side, whereby the offsets of adjacent fold walls which face one another contact each other as spacers and that said filter medium is at least hardenable in the region of said offsets under the influence of heat, wherein the permeable filter medium comprises fibres of thermoplastic material and that the configuration of the fibres becomes more compact whereby the rigidity of the filter medium is increased by the welding of the filter medium under the influence of heat in the region of the offsets.
La présente invention a pour objet un cartouche filtrante, notamment une cartouche en forme de bloc, laquelle comporte une pluralité de parois en forme de soufflet créé par pliage en zigzag d'un milieu filtrant perméable, lequel présente une série de projections formées par segmentation, de telle sorte que le milieu soumis à la filtration traverse les parois du soufflet dans la direction de la surface opposée du soufflet, les projections adjacentes opposées des soufflets venant en contact et assurant l'écartement des composants; le milieu filtrant en question est sujet au durcissement dans la région au moins des projections en question sous l'action de la chaleur, le milieu filtrant perméable en question étant constitué de fibres de matériau thermoplastique dont la configuration est de compacité croissante, la rigidité du milieu filtrant étant accrue sous l'effet de la chaleur produite par le soudage du milieu filtrant dans la région des projections.
Fetherstonhaugh & Co.
Freudenberg Carl
LandOfFree
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