Which is wound around it forming coils, thereby countering the centrifugal force that is the main cause of balloon formation.
This problem, typical of ring spinning machines since it derives from their very working principle, is very evident in the case of woollen and semi-worsted ring spinning frames, due to the coarseness of the yarn and the large size of the spool and ring. It is known that the factors negatively affecting yarn tension are essentially related to the size of the balloon, to
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