Galvão, Felipe Mendonça FontesSilva, Yago Filipe dos Santos2023-12-212023-12-212023-12-18SILVA, Yago filipe dos Santos. Um estudo de caso na indústria têxtil para identificação precisa e análise de causa/efeito na presença de sujidade em fios e algodão. 2023. 47 f. Trabalho de Conclusão de Curso (Graduação em Engenharia Têxtil) - Departamento de Engenharia Têxtil, Universidade Federal do Rio Grande do Norte, Natal, 2023.https://repositorio.ufrn.br/handle/123456789/56660The textile industry faces multifaceted challenges in achieving high-quality production standards. This study focused on addressing the recurrent issue of dirty threads in the spinning sector. The research employed comprehensive methodologies, including a detailed analysis of the production process and the application of laboratory techniques, such as optical microscopy, to examine the structure of the threads. Additionally, the application of a detergent/emulsifier was one of the methods adopted, aiming to remove impurities from the hair. Fourier transform infrared spectroscopy (FTIR) has played a significant role in analyzing the composition of wires, providing valuable data on their chemical properties. Furthermore, the implementation of the PDCA cycle was instrumental in identifying the root cause of the problem and executing effective action plans. This structured method facilitated a meticulous analysis, enabling the precise identification of process flaws and the proposal of corrective measures. The obtained results highlighted the efficacy of these combined methods in enhancing thread quality, significantly reducing impurities. This multifaceted approach not only resolved the issue of dirty threads but also laid a robust foundation for continuous improvements in the textile industry.Attribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/Indústria TêxtilFios sujosFTIRciclo PDCAbachelorThesis