Long fiber
As long fibers are natural fibers referred who mm, a length of over 100th They represent the target product of traditional fiber digestion and are more complex to obtain and process compared to the production of short fibers in which the entire fibers are used (entire line). They are mainly used in textile production. As by-products scrapings from the broken wood core and tow and super short fibers at or dust. Longer than long fibers are only filaments such. B. silk or synthetic fiber filaments , which are only limited by the volume of the bobbin .
Fiber digestion of hemp and flax
The long fiber digestion in hemp and flax can be used to obtain long or short fibers. After the harvest, the hemp and flax straw is laid out in parallel ( longitudinal fibers ) and dried. Drying is followed by roasting with water and renewed drying in the field. The straw, which is still lying parallel, is then broken and the long fibers are extracted by swinging and panting the straw.
use
Long fibers are mainly used for clothing textiles and for the production of other large-area fabrics, ropes and ropes. The production of hemp and flax long fibers is currently mainly taking place in Asia, as they cannot be carried out cost-effectively in Europe due to their high costs, the low yield and the ecological problems caused by wastewater during water roasting.
literature
- Michael Carus et al .: Study on the market and competitive situation for natural fibers and natural fiber materials (Germany and EU). Gülzower Expert Discussions 26, ed. from the Agency for Renewable Raw Materials eV, Gülzow 2008 Download (PDF; 3.9 MB)
- nova-Institut (Ed.): Das kleine Hanf-Lexikon. Verlag Die Werkstatt, Göttingen, 2nd edition, 2003; Page 65. ISBN 3-89533-271-2