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Reduce The NEP Defect Of 80 Cotton Polyester Blended Yarn Dyed Yarn

2014/7/23 8:15:00 13

Cotton Polyester Blended Yarn Dyed Fabric Yarn Cotton

statistics show that when the number of neps is higher than 100 /105m, the yarn quality deteriorates significantly, the number of winding shear increases, and the production efficiency decreases. In view of this situation, the company QC team carried out quality research to reduce the 80 cotton polyester blended yarn dyed yarn neps defects. 
Setting goals: according to statistics, the average number of Neps in 80 combed cotton and polyester yarns in March 2013 ~9 reached 97 /105m, exceeding the requirements of 90 /105m indicators. P The preliminary investigation of the main causes affecting yarn nep yarn defects was made by the team. It was found that the main reason for the number of Neps in 80 cotton polyester yarn dyed yarns is that the neps and neps are the main reasons that affect the NEP yarn number. According to statistics, the neps of spun cotton sliver reached 80 /g or more, and the neps of fine denier chemical fiber sliver were over 4 /5g, which exceeded the internal control standard. The group decided to reduce the NEP defects of 80 cotton / polyester blended yarn dyed fabrics to 70/105m by reducing the sliver neps and < a href= "//www.sjfzxm.com/news/index_c.asp" > spinning > /a > pilling. 
 < a href= "//www.sjfzxm.com/news/index_c.asp > > feasibility > /a > analysis: according to the panel statistics, in July 2013, < a href=" //www.sjfzxm.com/news/index_c.asp "> combed cotton polyester > /a > 80 yarn neps yarn number had reached 68 /105m, smaller than the set target value. At the same time, the members of the group have rich experience and excellent comprehensive ability, and have won the excellent quality management team of the national textile industry many times. 
 analysis: group members used brainstorming to analyze the causes of "neps" and "spinning pilling", and summed up a number of terminal factors such as the new operation skills failed to reach the standard, the xilindorf speed and the gap cover of the Sun Lin cover, the cotton maturity was not in accordance with the standard cotton, the vehicle inspection was not in place, the spinning fine denier chemical fiber tin Lin clothing was unreasonable, the spindle speed was high, the grid maintenance cycle was not proper, Hososa Mi's concentricity was not in place, and the selection of the ring traveler was improper. 
 after confirmation, the team finally confirmed that improper allocation of cylinder and doffer speed and tin liner cover, improper matching of spinning knitted fabric, high spindle speed, improper mesh ring maintenance cycle and improper selection of ring travellers were the main reasons for producing neps and spinning pilling. 
The implementation of countermeasures: for the various reasons, the group put forward various solutions, and made a comprehensive evaluation from the aspects of effectiveness, operability, economy, reliability and so on, and confirmed the implementation plan of the various factors. P 
 aiming at improper allocation of cylinder and doffer speed and tin gap cover, the team determined the cylinder speed 360rpm, doffer speed 20rpm, and 8 to 7 x 6 x 6 x 7 (Ying Si) by orthogonal test. 
 aiming at the unreasonable matching of the knitted fabric of the spinning fabric, the team passed the tracking test for half a month. The average cotton neps of the Xilin needle clothing fabric were 70 /5g at the working angle of 0.9 degrees. 
 in addition, the group successfully adjusted the number of neps to 62 /105m by adjusting the frequency conversion curve of the spindle spindle speed, shortening the maintenance period of the mesh ring, and selecting the BS type travellers of suitable origin, thus achieving the goal of public relations. 
 benefit: after the event, the product quality improved obviously, and the market share was increased. The added value of the activity increased by 800 yuan / ton, and the monthly cumulative output of 60 tons of yarn was 48 thousand yuan per month. 
 at the same time, the spindle speed of spinning stage is increased, the efficiency of automatic winding is increased, the daily output is increased by 1.8% compared with the original, and the total benefit is increased by 29 thousand yuan per month.