Thesis Details

Thesis Title: The effect of various percentages of polyester/cellulosic reworkable fibers on fiber characteristics and yarn quality
Thesis Author: Jonathan Marr
Abstract: As the cost of raw materials continues to influence the manufacturing costs of textiles considerably, the textile industry must use raw materials as efficiently as possible, with careful recycling of textile by-products. One such byproduct is reworkable fibers. Because manufacturers may not know the exact relationship between increasing percentages of reworkable polyester/cotton and polyester/rayon fibers this work was performed. Forty-six yarn conditions were spun from 65/35 polyester/cotton and polyester/rayon stock. Five levels of reworkable fibers were produced for each fiber type; half were processed through the A.T.e. opening system and half through a hopper feeder. This research determined an increase in reworkable fibers from 5% to 15% did not affect yarn quality. However, an increase in reworkable fibers from 0% to the 5% to 15% range did affect certain properties depending on the spinning system used. This work also determined that reprocessing fibers alters fiber-to-fiber cohesion values. Because of cohesion differences between reworkable fibers and virgin stock, the percentage of reworkable fibers altered draw frame drafts. Therefore, it is of the utmost importance when processing reworkable fibers to introduce a consistent percentage.