Study on material realization and waste generation in single jersey circular knitting machine

Abstract

The textile factory in Bangladesh, specially the knit industries, where a huge amount of knit fabric is produce in daily basis. There also numerous types of raw material like yarns, various types of count of yarn are used according to the requirement of production. So in this aspect, though the production procedure is same for different knit products, major differents are seen during the time of production. It has been seen in often that the amount of production of fabric are few less with respect to the amount of inputting yarn. It has been recalled as the termed as Process loss (Process loss of yarn). Now question is what the reason behind this process loss is and how much amount in wt. of yarn wasted during production. To find out the answer of these question we have seen that the process loss impacted by some factors during production, Such as, Types of yarn, Yarn composition, Count of Yarn, Brand of Yarn, Yarn package, m/c r.p.m. skill of operator, yarn tension , loading of yarn , relative humidity etc. All necessary data‟s have been collected for day long above 8 hour per day (1 shift), and they were collected and rearrange as a form of Microsoft office word. And this thesis showed the find out the process loss for each of the criteria at a time for each of the single machine. Through this thesis work it is clear that the wastage of yarn is more in case of foreign brand compare with local brand during knitting.