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AssigneeLenzing Aktiengesellschaft
InventorsJohann Pillichshammer, Christoph Schrempf, Andreas Gressenbauer, Ernst Reiter, Martin Neunteufel
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A process and a system for washing filaments. A filament to be washed and a washing liquid are passed in a countercurrent. The process and the system include two washing stages. In each washing stage the filament is brought into contact with a fresh washing liquid by a washing element in such a way that only an amount of the washing liquid is transferred to the filament, which adheres to the filament itself, for example by adhesion. The washing liquid is then separated from the filament again in each washing stage, and a separated washing liquid is collected in such a way that it is not mixed with the separated washing liquid from other washing stages of the process but is used as the fresh washing liquid in the washing element of a preceding washing stage.
A process for washing a filament, wherein the filament to be washed and a washing liquid are passed in a countercurrent, the process comprising at least two washing stages, and in each washing stage the filament is brought into contact with a fresh washing liquid by a washing element in such a way that only an amount of the washing liquid is transferred to the filament, which adheres to the filament itself, and the washing liquid is then separated from the filament again in each washing stage and a separated washing liquid is collected in such a way that it is not mixed with the separated washing liquid from other washing stages of the process but is used as the fresh washing liquid in the washing element of a preceding washing stage, wherein the washing element is selected from elements for providing a falling film of washing liquid, rollers or rolls, preparation yarn guides, and a combination of ram jet washers and yarn guides, the washing element transferring only an amount of the washing liquid to the filament that adheres to the filament.
A system for washing a filament, the system comprising at least two washing stages, and in each washing stage the filament is brought into contact with a fresh washing liquid by a washing element in such a way that only an amount of a washing liquid is transferred to the filament, which adheres to the filament itself, and, in each washing stage, the washing liquid is then separated from the filament again and a separated washing liquid is collected in such a way that it is not mixed with the separated washing liquid from other washing stages of the system but is used as the fresh washing liquid in the washing element of a preceding washing stage, wherein the washing element is selected from elements for providing a falling film of washing liquid, rollers or rolls, preparation yarn guides, and a combination of ram jet washers and yarn guides, the washing element transferring only an amount of the washing liquid to the filament that adheres to the filament.
Dependencies are inferred from the claim text.