International Journal of Engineering Inventions
Yarn faults and clearing
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- 5.7.4 Yarn clearing concept of Uster Quantum clearer
| 5.7.3 Yarn faults and clearing
It is not possible that the yarn which produces is without faults because of different reasons. Stickiness of cotton can contribute to the formation of thick and thin places. Fly in the ring department is also one of the main reasons for short faults in the yarn. Because of the fly get spun into the yarn. Hence it is not possible to have fault free yarn from ring spinning. So it is necessary to have yarn monitoring system in the last production process in the spinning mill. Fig. 26 Diagram of Yarn faults 5.7.4 Yarn clearing concept of Uster Quantum clearer Yarn fault is divided into different classes according to their length and cross sectional size. The yarn fault length is measure in centimeters and cross sectional size is measured in percentage. The classes and there limits are set as below points. Short thick places fault contains 16 classes with the limits 0.1 to 8 cm for the length and the cross sectional size are +100% to +400%. The classes are indicating A1 to D4. Spinner’s doubles fault lies in E class fault, whose length is over 8 cm and cross sectional size is over step to +100. Long thick places fault and thick ends fault have four classes. Yarn fault length is referring to be 8 cm to 38 cm and cross sectional size is -30%, -45% and -75%. The classes are designated H1, H2 and I1 and I2. N means Neps S means short fault Analysis on the Defects in Yarn Manufacturing Process & its Prevention in Textile Industry www.ijeijournal.com Page | 66 L mean long fault CCP mean coarse count CCM means fine count Fig. 27 Diagram of Yarn fault classes V. C ONCLUSION In our paper, we have achieved a lot of defects regarding to process problems during manufacturing of yarn in different departments. First we have discussed all problems that can occur in the process, then at the same time we have also gave a preventive action for those problems. We have also highlighted the critical success factors of every department that can cause more dangerous in quality point of view and improvement of process. After the participation and share knowledge from our three applicants, the conclusion of our paper is to highlight the issues in the manufacturing process. It is a good experience for us and gained a technical knowledge from it. Actually the report which we have written is the mixture of analysis and our practical experience and in this technical and advanced world, it is necessary to work in a systemic way and try to improve financial condition of the organization. In our opinion, the paper which we have written is very useful for yarn manufacturing plant. In textile industry, especially in yarn manufacturing plant (Spinning Plant) there are seven big departments and it’s difficult to achieve the objectives in every department without implement of suitable system in the process. As our practical experience in yarn manufacturing plant, it is very necessary to reduce or eliminate the defects in ever department to achieve the required specification of customers in the final yarn end product. For capture market in these days and from customer’s requirements, product should have a good product of quality and service. tải về 1.28 Mb. Chia sẻ với bạn bè của bạn:
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