Abstract

Two parameters twist efficiency and yarn delivery speed ratio were adopted to clear the properties of the twisting and the yarn delivery of a blet nip twister to get a satisfactory twisting condition.Although these parameters varied . with twister condition (B/Y ratio and intersecting angle of the belt), the relationship between the detwisting tension/twisting tension ratio and the yarn delivery speed ration is approximately on a master curve. And then, when the yarn delivery speed ratio was equal to one, the B/Y ratio was given by : (1/ (1+e)) · (1/cos (θ/2)) where, e : elongation ratio of untwisting, θ : intersecting angle of the belt.

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