The plastic industry in Peru has experienced considerable growth in recent years, primarily due to an increase in the national production of plastics within the country and the different factors that have contributed to this phenomenon. However, small plastic packaging manufacturers, due to the context in which they operate, often experience delays in production. Various factors contribute to these delays, such as a lack of raw materials, defective products and reworked products. Thus, lacking standardized methods or tools for production flow leads to delays in delivery times of the product to the client. It has been indicated that 41.67% of unpunctual deliveries occur in SMEs. In the present study, the current and proposed processes were simulated and modeled in order to reduce waste through the application of the proposed methodologies.