Rhodia Acetow Gmbh

Cerdia International Gmbh

Solvay Acetow Gmbh

Martin Moser

Thomas Krumrey

Uwe Schäffner

Dieter Mann

Dieter Ruf

Eckart Schütz

The invention relates to a cellulose-containing fibrous material for a nonwoven product, in particular in the form of a wiping cloth, cleaning cloth, sanitary product, medicinal product, or domestic cloth, wherein the fibrous material is designed as a tubular composite structure at least in part or in some regions, said structure having tubular cellulose acetate filaments. The invention additionally relates to a nonwoven product which has the fibrous material according to the invention and to a method for producing such a cellulose acetate-containing fibrous material.

Cellulose acetate-containing fibrous material for a nonwoven product, nonwoven product comprising such a fibrous material, and method for producing such a fibrous material

The invention relates to methods for simultaneously producing crimped fiber strips in parallel, in particular filter tow strips, in a crimping machine (KM) having an inlet region (), a squeezing zone () formed between two transport rollers (), and a compression channel (), comprising the following steps: a) simultaneously feeding in parallel a plurality of fiber strips () via the inlet region (), wherein the fiber strips are guided separately in the inlet region (), using a first separating device (), b) simultaneously transporting and compacting in parallel the fiber strips in the squeezing zone () by way of the two transport rollers (), and c) simultaneously crimping in parallel the fiber strips in the compression channel (), wherein the fiber strips are guided separately in method step b) by using a second separating device () and in method step c) by using a third separating device (), and wherein the first, second and third separating devices () are designed such that the separate guidance in parallel of the fiber strips takes place from the inlet region () through the squeezing zone () into the compression channel () without interruption. Moreover, the invention relates to an apparatus for executing said method. The invention enables the simultaneous formation of a plurality of separate, crimped fiber strips, having a substantially constant and symmetric crimping characteristic over the respective entire fiber strip cross-section, and in particular also cost-effective production of crimped filter tow strips, having a low overall titer, by avoiding the phenomenon of the split-off edge, by way of a conventional spinning and crimping machine.

Method for producing multiple fibre strips in parallel and apparatus for executing said method

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Elzach, Germany

Martin Moser