A - Human Necessities – 24 – D
Patent
A - Human Necessities
24
D
A24D 3/10 (2006.01)
Patent
CA 2445966
The invention relates to a filter tow made from crimped endless cellulose acetate filaments, whereby the filaments form at least two connected fibre bundles with the same filament titre of at least 600 filaments. The filament titres differ from bundle to bundle by at least 1 dtex. Furthermore a filter tow is disclosed with a crimp ratio of more than 40 %, said filaments comprising at least 22 crimp turns per filament length.
L'invention concerne une tour à filtres comprenant des filaments d'acétate de cellulose continus et frisés. Les filaments forment au moins deux nappes de fibres contigües à titres de filaments identiques et contenant au moins 600 filaments. Les titres de filaments se distinguent d'une nappe de fibres à l'autre d'au moins 1 dtex. L'invention concerne également une tour à filtres ayant un indice de frisage de plus de 40 %, les filaments présentant au moins 22 des arcs de frisure par longueur de filament.
Dollhopf Ruediger
Kuner Dieter
Leutner Thomas
Teufel Eberhard
Vogt Christian
Na
Rhodia Acetow Gmbh
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