Implementação de controle estatístico de processos em uma empresa têxtil

Abstract

This study demonstrates the implantation of the Statistical Process Control in a textile industry, which main activity is the polyester filaments texturing. The main objective is to evaluate the productive process enabling identify improvement opportunities of the quality. Based on a bibliographical study, it introduces the main concepts, characteristics and techniques of the Statistical Process Control, so as to provide a theoretical base for the work’s development. In the sequence it is presented the implantation’s methodology of the Statistical Process Control, adapted to the reality of the company, to facilitate its adoption and maintenance. The proposed model was applied to the company’s laboratory, which for being narrowly related to the quality of the product offers a great importance to the context of the organization and customers. As a support tool to the SPC system, it was developed an information system that operates for the data collection and storage, to the elaboration of the control graphs and capability analysis. This tool offers a way of on-line identification of the process deviation, to those involved in the collection and analysis system. The results obtained from the proposed methodology showed that even with the process operating within great capability, most variables are out of control, indicating that it should be performed a systematic monitoring of the whole process to improve the performance of the products. Finally suggestions for the improvement of the process are presented, aiming the decrease of the variability, thus facilitating the implantation of the project in the other company’s control stages.