Aplicação da metodologia lean seis sigma: redução de ocorrências de encolhimento de sola de borracha em uma indústria calçadista da Paraíba

Abstract

In the current scenario, in a globalized and competitive world, consumers are more attentive and demanding regarding the quality of products and services consumed. Six Sigma has been a good ally for companies as a methodology to avoid defects in products and increase customer satisfaction rates, with DMAIC being one of its main tools to help identify opportunities for improvement and find root causes of problems. In this work, DMAIC and the concepts of Lean Six Sigma were used with the objective of evaluating opportunities for improvements that could reduce the number of occurrences of shrinkage outside of expectations of a family of shoes in a footwear company. The need was realized based on complaints and also due to the considerable rate of exchanges in e-commerce carried out by consumers, who complained that the shoes were smaller and/or not compatible with the size of the measurement tables made available by the brand on its sales website. In this way, the DMAIC methodology was used to carry out the project, in order to identify the root causes, and which could contribute positively to the company, enabling the development of the action plan and the implementation of process improvements. The project's actions were carried out through the use of quality management tools widely used in Lean Six Sigma, such as the SIPOC matrix, production process mapping, Ishikawa diagram and 5 PQ's. As a result, it was possible to reduce the total number of incidents due to shoe line shrinkage and obtain a better perception of the end consumer in terms of product quality and reliability, adding greater value to the brand.