Our reinforcing yarns for tires, rubber goods applications and other composites are produced from high-purity pulp.
In a complex, multi-stage production process  (1,2 MB), the natural raw material cellulose is transformed into a high-tenacity multifilament yarn for technical applications.
| The main steps of the process are: |
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Viscose preparation:
The pulp is dissolved with the addition of sodium hydroxide and carbon disulfide. After ripening, filtration and degassing, the solution is ready for spinning. |
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Spinning:
The viscose is pumped through spinnerets into the spin bath, where the cellulose precipitates and forms the yarn. After stretching, fixation and washing, the yarn is wound into wet bobbins. |
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Textile after treatment:
The wet bobbins are put into a creel, from which the yarns are pulled off. After passing the washing- and the sizing section, they are dried and wound into bobbins of 4 or 10 kg. The 4 kg bobbins get a Z100 protection twist. Finally, all bobbins are sorted and packed on pallets for dispatch. |
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Spin bath recovery:
The main circuit supplies fresh spin bath to the spinnery, gathers the used stream and - after filtration, the addition of sulphuric acid and reheating – returns it to the spinnery. The recovery sub-circuit removes excess water by means of evaporation and excess sodium sulfate by means of crystallization and calcination. |
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