THE EXPERIMENT DETERMINATION OF THE OPTIMAL MIXING RATIO OF POLYESTER FIBER SCRAP WITH 100% POLYESTER IN NONWOVEN FABRIC PRODUCTION บทความวิจัย

บทคัดย่อ

The purpose of this research is to study the optimum ratio between polyester fiber scraps and virgin polyester. In the study, the production process of a nonwoven fabric manufacturer in Rayong, Thailand, it was found a problem in the production process, there is a large amount of polyester fiber scrap left from the production process. Therefore, the waste of polyester fiber from the production process was mixed with pure polyester raw material in 4 sets of ratios, namely 4:96, 6:94, 8:92, and 10:90 get to average to compare with the conditions weight values, strength, elongation, and thickness as to the testing standards by TIS no. 121 and analyzing process capability by the Actual Process Capability Index (Cpk) was used by analyzing and processing from the Minitab package to examine the variability of the production process. The results showed that the ratio was 4:96 with a mean total weight of 27.5 grams per square meter. The thickness value was 1.07 mm., the strength value was 25.85 N.m., and the elongation value was 5.05 N.M., which were in the specified criteria for all test results. The ratio was 6:94 with an average weight of 27.9 g/m. square meter The thickness value was 1.10 mm., the strength value was 24.41 N.m., and the elongation value was 4.40 N.M., were within the specified criteria for all test results and both of which had a Cpk greater than 1, indicating that the process was capable or there is a natural variance. After the improvement in the past 12 months, it was found that the amount of poly fiber scrap 58 tons of ester left over from the production process were recycled and 45 tons were recycled, representing 77.58% of the recycled polyester scrap or the efficiency of the product was 96.7