The Peruvian textile MSE industry faces significant operational and management challenges, impacting its competitiveness and sustainability. Previous studies have shown that the implementation of methodologies such as Lean Manufacturing can optimize processes and improve efficiency in small and medium-sized manufacturing sectors. However, there is a gap in the specific application of these methodologies in the textile jeans manufacturing industry, particularly in supplier management and quality control.

Textile MSEs frequently deal with problems such as delays in the delivery of raw materials, operational errors that generate rework, and inadequate planning and inventory. These challenges affect the profitability, reputation and competitive capacity of these companies. It is urgent to address these problems to ensure their long-term growth and sustainability.

In response to these challenges, a production model based on Lean Manufacturing was developed, integrating tools such as Poka Yoke, work study and supplier management. This model included an initial diagnosis, personnel awareness activities, process analysis and optimization, implementation of Poka Yoke mechanisms to avoid errors, and rigorous supplier management. These actions sought to eliminate waste and improve production efficiency and quality.

The results showed a 26.98% improvement in order fulfillment, a 98.21% reduction in reworked products in the embroidery area, and a 92.97% decrease in errors due to incorrect thread selection. In addition, late delivery of products due to lack of raw materials was reduced by 98.29%, and non-standardized registrations decreased by 96.57%.

The research has a significant impact both academically and socioeconomically. Academically, it provides a practical model for the application of Lean Manufacturing in textile MSEs, filling a gap in the existing literature. Socioeconomically, it improves the competitiveness and sustainability of MSEs, contributing to local and national economic development.

Researchers and practitioners are encouraged to explore new research directions, integrating Industry 4.0 technologies with Lean methodologies, and evaluating their long-term impact in different operational contexts. This research is an important step towards process optimization in the textile industry, but much remains to be discovered and improved.