International Journal of Engineering Inventions
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- 3.6 Ring Spinning Process
| 3.5 Roving Frame
It is an intermediate process in which fibers are converted into low twist lea called roving. The sliver which is taken from draw frame is thicker so it is not suitable for manufacturing of yarn. Its purpose is to prepare input package for next process. This package is to prepare on a small compact package called bobbins. Roving machine is complicated, liable to fault, causes defect adds to the production costs and deliver the product. In this winding operation that makes us roving frame complex. There are two main basic reasons for using roving frame. [44] The roving sliver is thick and untwisted. Because of it hairiness and fly is created. So draft is needed to reduce the linear density of sliver. The ring drafting arrangement is not capable that it may process the roving sliver to make the yarn. Draw frame can represent the worst conceivable mode of transport and presentation of feed material to the ring spinning frame. [40] Fig. 7 Diagram of Roving Frame Department 3.6 Ring Spinning Process Ring Spinning machine is used in textile industry to twist the staple fibers into a yarn and wind on a bobbin for storage and also input for the winding section for more precise the yarn to minimize the defects of end yarn. Ring machine is very important due to yarn quality. Ring Spinning is the most costly step to convert fibers into yarn and approximately 85% yarn produced in ring spinning frame all over the world. It is made to draft the roving into a desired count and impart the desired twist to produce the strength in the yarn. If twist is increased, yarn strength is also increased at optimum limit. [45] Fig. 8 Diagram of Ring spinning Department Analysis on the Defects in Yarn Manufacturing Process & its Prevention in Textile Industry www.ijeijournal.com Page | 50 tải về 1.28 Mb. Chia sẻ với bạn bè của bạn:
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