International Journal of Engineering Inventions
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- Điều hướng trang này:
- 5.7 Winding Process
- 5.7.1 Objectives of winding
- 5.7.2 How Much Importance for Quality
| 5.6.4.2 CV of Yarn
From customer’s point of view, CV of count is very important and it’s difficult to achieve and maintain in the ring spinning process. CV of yarn is the variation of different parameters like, strength, count etc. 5.7 Winding Process The cop who is prepared in the ring frame is not suitable for further process. So the yarn is converted into the shape of cone which is prepared in the winding. Practical experience shows that winding process alters the yarn structure. The factors which affect the yarn structure during winding are bobbin geometry, bobbin unwinding behavior, binding speed. This phenomenon does not affect the evenness of the yarn but it affects the properties of the yarn such as thick places, thin places, neps, and hairiness. Fig.25 Diagram of Winding Department For better understanding of process, following are the main operations of winding section: 5.7.1 Objectives of winding Elimination of disturbing yarn fault such as long thick places, long thin places, short thin places and short thick places. To get the continuous length of yarn on cones for weaving process. To wax the yarn during the winding process. To get high efficiency of machine, that is high production level. Analysis on the Defects in Yarn Manufacturing Process & its Prevention in Textile Industry www.ijeijournal.com Page | 65 5.7.2 How Much Importance for Quality? Following point should be considered for quality point of view: Winding speed should be 1200 meter per minute for getting good quality. For getting good quality, yarn fault clearers device setting should be as close as possible in order to eliminate the disturbing yarn faults. In order to get good quality of yarn count channel setting should be less than 7%. Cone which we prepare for weaving purpose should have minimum fault for getting good quality, especially long thin places and long thick places. For getting good quality yarn, splice strength must be 75% more than of the yarn strength. Splice appearance should be good. Splice device should be checked twice in a week. To get better efficiency cone weight should be 1.8 to 2.4 Yarn winding tension must not be high during winding. If we will keep it high then tensile properties will be affected such as elongation and tenacity. If waxing attachment is below the clearers, the clearers should be clean at least once in a day. Wax roller should rotate properly.[53] tải về 1.28 Mb. Chia sẻ với bạn bè của bạn:
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