WOOLEN RING-FRAME DRAFTING

The actual twist level in the drafting zone of a woolen ring frame is measured and analyzed with respect to false-twist tube speed, roller v elocity, draft, deflector rod height, number of agitator pegs, and the presence or absence of the jaw on the base of the false-twist tube. I n terms of influence on the drafting twist, the false-twist tube speed , the pegs, the jaw, and the draft are positive factors, while the def lector rod and front roller velocity are negative factors. An empirica l equation is produced to relate drafting twist level to spinning vari ables, and deficiencies are shown for two earlier equations. A further study is made of the effect of various mechanical parameters on the s pinning performance and yarn properties for a number of wool blends. F or the sake of brevity, only one parameter is discussed in this paper.