Melhoria do processo produtivo em uma indústria de fabricação de espumas flexíveis de poliuretano utilizando a metodologia SEIS SIGMA. Estudo de caso: redução de rachos na espuma D38

Abstract

The Six Sigma is a methodology that has been widely used in industrial process improvement because it has diversified tools that fit the most different segments. The industrial process of manufacturing flexible polyurethane foams is simple, consisting of the reaction of isocyanate, polyols and water. The resulting products, which have a wide diversity of densities and hardness, are widely used by the furniture and confection industry. However, although simple, the problem has many variables that can generate opportunities for problems. This work had as objective to use the six sigma methods, DMAIC (Define, Measure, Analyse, Improve and Control), for evaluation and improvement of the polyurethane foam manufacturing process, focusing on D38 foam, since this foam has a high incidence of out-of-standard cracks. It were used the computational tools Minitab and excel. Thus, it was possible to analyze the historical data to obtain statistical data and charts indicative of the problem. The methodology presented satisfactory results for the manufacturing and financial gains.