[방적] Optimum Drafting Conditions of Polypropylene Spun Yarns 출판일 : 2005.01.01 저자 : Ching-Iuan Su, Wen-Chuan Lai 서지사항 : Textile Research Journal, Volume 75, No 1(2005), 6페이지 등록일 : 2012.03.16 I 조회수 : 78 작성자 : admin |
In this paper, we use polypropylene (PP) fibers (1.67dtex × 40mm) as a test material to prepare
roving for measuring the drafting force in the break draft zone. We investigate the influence of
the roller gauge, draft ratio, and roving twist factor on the drafting force to realize the drafting
behavior during roller drafting of the PP roving. In actual spinning, we spin the 18.5 tex PP
spun yarn to correlate the variation in drafting force and the yarn properties by evaluating the
yarn quality index. The results show that we can obtain the best yarn quality under drafting
conditions of 1.2-1.3 break draft ratio and 62 mm back roller gauge in conjunction with a roving
of 0.476g/m and 7.7 twist factor.
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