Solvent-spun cellulosic fiber
AssigneeLenzing Aktiengesellschaft
InventorsVerena Silbermann, Martina Opietnik
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Abstract
The present invention relates to a cellulosic fiber of the lyocell genus. The fiber according to the invention has the following properties: a) the fiber has a content of hemicellulose of 5 wt. % or more b) the fiber is characterized by the Hoeller factors F1 and F2 as follows: Hoeller factor F1≥0.7+x and ≤1.3+x Hoeller factor F2≥0.75+(x*6) and ≤3.5+(x*6) wherein x is 0.5 if the fiber does not contain a matting agent and x is 0 if the fiber does contain a matting agent, and if x is 0.5, the fiber is essentially free from any incorporation agent.
Claims17
A cellulosic fiber of the lyocell genus, wherein the fiber has a content of hemicellulose of 5 wt. % to 50 wt. % and the fiber is characterized by Hoeller factors F1 and F2 as follows:
- Hoeller factor F1≥0.7+x and ≤1.3+x
- Hoeller factor F2≥0.75+(x*6) and ≤3.5+(x*6)
- wherein
- x is 0.5 if the fiber does not contain a matting agent, x is 0 if the fiber does contain a matting agent, and
- if x is 0.5, the fiber is essentially free from any incorporation agent.
Dependencies are inferred from the claim text.