Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

IMPROVEMENT OF YARN QUALITY BY THE CHANGE OF DRAFTING ZONE OF DRAWING MACHINE (Pages : 87 - 91)

From the very inception of mechanical processing of jute, drawing lines were proved to be a critical part for processing jute into regular yarn. From last decade, some jute goods importing countries have raised objections regarding the quality of jute yarns. As a result it has become predictable to find out the causes of yarn irregularity for hold the position in world jute market. Therefore, this work was aimed at identifying and finding a suitable pin setting at drawing frames for jute processing which could be used effectively for jute industry and at the same time it is found acceptable to the importers. This work was undertaken by considering this point of view. In Drawing frame, different pin settings were used to produce 5lbs/spy jute yarn in apron draft spinning frame. Among the pin settings of 1st draw frame: Draft-4.0, 2nd draw frame: 6.3 and 3rd draw frame: 5.4, Doubling- 2:1, 3:1 and 2:1 respectively achieved the highest quality at modified pin settings for said jute yarn. In this experiment, existing pins of 3rd Drawing frame were replaced by new sets of pins with different density, size and shape and yarns were produced from both systems. Physical properties of produced yarn were tested and found modified pins density shows better quality yarn. From the study, it was clearly exhibited that Tensile strength, Quality ratio, Coefficient of variation and Standard deviation of produced yarn was better for modified system. The produced yarn (modified) was more regular and uniform compared to the existing drawing frame. As a result, pin arrangements of the drawing machine shows positive impacts on yarn properties.Download