Sistema de Aseguramiento de Calidad (SAC), basado en la metodología Six Sigma para reducir la variabilidad de tono en los procesos de inyección-soplo de plástico

Abstract

This application develops a Quality Assurance System (SAC), designed in accordance with the requirements of the injection-blow production process corresponding to the plastics industry, which contributes 2.6% of the national GDP. The objective raises the quantitative improvement of the Sigma level of the analyzed company, seeking a reduction of 20% in the costs generated by the problem called "tone variation", originated in the plastic injection-blow production line, based on the methodology Six Sigma (DMAIC). The methodology consists of five phases, which allow the achievement of the proposed objective: Phase 1. Define the problem, Phase 2. Data collection and analysis, Phase 3. Analysis of the causes and critical factors of the problem, Phase 4. Proposal for improvement of the implementation of tools to solve the problem, Phase 5. Control: design of a measurement system to ensure the stability of product quality. With the implementation of the tools derived from the analysis and the results obtained in each phase, a level of 3.7 σ is obtained, increasing by 0.3 σ, with respect to the initial Sigma level of 3.4, translated into an annual economic saving of $ 141,120.00.