Conclusion
1. In the formation of viscose fibres, owing to the formation of a boundary layer, all the bath liquid in the space between the elementary fibres is immobilised as a boundary layer after a very short time.
2. All this liquid receives an acceleration from zero velocity to a velocity equal to 90–92% of that of the thread. This acceleration is realised at a distance of 1.5–3 mm from the spinneret, and may cause considerable stresses in the elementary fibre being formed.
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Additional information
All-Union Scientific-Research Institute for Man-Made Fibre (VNIIV). Translated from Khimicheskie Volokna, No. 6, pp. 33–35, November–December, 1969.
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Serkov, A.T., Ryabushkin, A.V. Appearance of a boundary layer during the formation of viscose fibres. Fibre Chem 1, 644–647 (1971). https://doi.org/10.1007/BF00581198
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DOI: https://doi.org/10.1007/BF00581198