Why Are Roving Breakage In High Temperature And High Humidity Season? Why Do Polyester Cotton Blends Produce Coarse Joints?

Question 1: in the high temperature and humidity season, when the relative humidity of workshop is about 65 degrees, four Rola roving machine produces 9.72 tex combing varieties. Especially Zhongda yarn, especially difficult to open. Sometimes there is a yarn defect, and there is no draft which will not open.

Answer: When the roving is high humidity, the spinning tension must be adjusted. Because the friction resistance of the hollow wing and the pressing palm of the flyer is increased when the humidity is high, that is, the winding tension is large. At this time, the tension of the spinning section becomes loose, the yarn is jitter badly, and the broken ends will also increase. Try to reduce the number of buckles, but adjust the spinning tension.

Question two: polyester cotton 65/35 varieties, the production process appears about 2 cm thick section, what is the reason?

　 Answer 1: The possible reasons are as follows.

1) the winding of the front cots of the spinning frame is serious, which affects the unevenness of the adjacent yarn cots and forms uneven evenness.

2) the apron of the spinning frame is aged, unclean or contaminated, resulting in the unevenness of the strip during the drawing process.

3) the failure of the upper pin spring of the spinning frame and the control of the rubber ring jaw.

4) the cradle pin of the spinning frame is out of the way and the spacing block is missing or wrong.

5) roving machine cotton collector crack and impurity.

　　 Answer two: Now the weather is hot, and the spinning stage is the easiest way to get high yarn faults.

1) control temperature and humidity. The temperature and humidity of polyester cotton varieties are smaller than that of pure cotton varieties, and the temperature should not be too high.

2) efforts should be made to clean up the spinning channels in various processes, and administrators should patrol inspection frequently, which reflects the basic management level of a company. For example, the size of the carding must be inspecting frequently; the polishing process is done with talcum powder; the place where the sliver passes through the drawing frame must be carefully done and the passageway clean and smooth; the roving apart from the roller is used to clean the cotton wax regularly with the special tools for the flyer passage, while the roving is used for palm checking, while the main yarn is the channel cleaning.

3) check the sugar content of raw materials and make proper deployment.