[방적] Effect of Manufacturing Parameters of Covered Yarns on the Geometry of Covering Components 출판일 : 2009.04.01 저자 : Donatas Petrulis, Salvinija Petrulyte 서지사항 : Textile Research Journal, Volume 79, Issue 6, 526 페이지 등록일 : 2011.05.20 I 조회수 : 79 작성자 : admin |
This study deals with numerical simulation of structure of covered yarns produced on a
double covering machine. Four manufacturing parameters of covered yarns such as delivery
speed of covered yarn, rotational speed of two hollow spindles, and core stretch ratio
during wrapping were used to simulate coil length indices of both covering components.
Coefficient of evenness of semi-manufactured product as a function of delivery speed of
covered yarn and rotational speed of first hollow spindle was also computed. The influence
of the above-mentioned process variables on the geometry of covering components was
shown by means of analysis of corresponding relationships. To evaluate the intensity effect
of each variable, the comparable partial differences of the proposed functions were
computed. The computations were made for covered yarn structures composed of
polyurethane elastomeric multifilament core wrapped with two viscose (CV) multifilament
covering yarns.
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