International Journal of Engineering Inventions
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- 3.4 Combing Process
| 3.3 Drawing Frame Process
Draw frame is simple and cheap machine. In spinning regarding to quality point of view it play very important role .If its setting is not done properly then it affects yarn strength and elongation. For improving quality draw frame is final process in the spinning mill. It effects on quality especially on evenness of sliver. In the spinning process there are chances of elimination of errors in draw frame machine. Draw frame play very important role for the quality of yarn. Without it participation quality can never be improved. Drafting arrangement is the heart of the draw frame. Drafting arrangement should be simple, stable design, should have ability to produce high quality product. It should have high fiber control. Auto leveler is also used to adjust and to improve the linear density of the sliver. Without auto leveler it is very difficult to improve the quality of the draw frame sliver. [36] Fig. 5 Diagram of Drawing frame Department 3.4 Combing Process For getting high quality of yarn, one extra process is introduced which is called combing process. Combing is an operation in which dirt and short fibers are removed from sliver lap by following ways. In specially designed jaws, a narrow lap of fiber is firmly gripped across its width Closely spaced needles are passed through the fiber projecting from jaws. Short fiber which we remove is called comber noil. The comber noil can be recycled in the production of carded yarn. Yarn which is get from comber sliver is called comber yarn. Carded sliver are combine into comber lap in a single continuous process stage. Flat sheet of fiber which is get from comber lap is fed into the comber in an intermediate. [37, 38] There are different ways by which value of combing is used in the manufacturing of cotton. By spinning point of view combing process makes more uniformity in the yarn. Strength of yarn is also high because in combing process short fiber are removed and only fiber having good strength remains. So it play very important role for increasing the yarn strength. Because of straightened condition of fibers combing makes Analysis on the Defects in Yarn Manufacturing Process & its Prevention in Textile Industry www.ijeijournal.com Page | 49 possible spinning smoother and more lustrous yarn. In combing process length of fiber are strong so it need less twist produced then carded yarn. Fig. 6 Diagram of Combing Department tải về 1.28 Mb. Chia sẻ với bạn bè của bạn:
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