The twisting of a fancy yarn can also be accomplished using a machine that combines the two processes, ring and hollow spindle.
In this case the first operation is carried out by the hollow spindle, preceded by the core and effect yarn feeding group. Below the hollow spindle, which holds the binding yarn, is located the ring spindle, which winds the yarn directly and the twists are loosened as an effect of the relative speed between the first and the second stages. Indeed, the ring spindle
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