The industry of small and medium-sized enterprises (SMEs) dedicated to the manufacturing of paper bags in Peru faces challenges related to production efficiency and quality management. Previous studies have shown that implementing Lean Manufacturing can significantly improve these aspects by optimizing processes and reducing waste. This study focused on production inefficiencies in SMEs in the sector, which manifest in high rates of non-conforming products and prolonged format change times, affecting the competitiveness and sustainability. To solve these problems, a production model based on Lean Manufacturing tools was proposed, specifically SMED, 5S, and Standardized Work. These tools were selected for their proven effectiveness in improving operational efficiency and reducing waste. The implementation of the model involved an initial diagnosis, followed by the systematic application o...