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US 2022/0396899 A1Published application
Roller surface
AssigneeLenzing Aktiengesellschaft
InventorsJohann Pillichshammer, Christoph Schrempf, Andreas Gressenbauer, Ernst Reiter, Martin Neunteufel
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Abstract
The present invention relates to the surface adaptation of a roller to be employed in the production of cellulose filament yarns.
Claims15
A roller, suitable to be used during lyocell filament production, wherein a surface of the roller comprises first sections displaying a surface tension so that, depending on a liquid adhering to a filament or yarn, one of the following conditions is fulfilled:
- a) surface tension of the first sections is in the range of from 0.25 to 3.5 times, optionally 0.35 to 2.5, or optionally 0.4 to 0.8 times the surface tension of the liquid, provided that the surface tension of the liquid is 45 mN/m or more;
- or
- b) the surface tension of the first sections is in the range of from 0.5 to 10 times, optionally 0.8 to 2.5, or optionally more preferably 1 to 2 times the surface tension of the liquid, provided that the surface tension of the liquid is less than 45 mN/m.
(canceled)
Dependencies are inferred from the claim text.