Integrated Quality and Process Improvement Strategies in Manufacturing Crown Corks: The Case of Peniel Industry PLC

Abstract

This research examines Integrated Quality and Process Improvement Strategies in Manufacturing Crown Corks to enhance operational efficiency and product quality case study at Peniel Industry PLC, a crown cork manufacturing company in Ethiopia. The research employs a descriptive and explanatory research design, utilizing both quantitative and qualitative approaches. A structured survey questionnaire was distributed to employees, and interviews and direct observations were conducted to gather qualitative insights. Production records provided empirical data to assess defect rates, machine downtimes, and material waste. A stratified sampling technique was used to select employees from production and quality assurance departments, ensuring relevant expertise in the study. Findings indicate that high defect rates, inefficient machine utilization, and excessive material waste hinder the company’s compliance with international quality standards such as ISO 9001. Statistical analysis, including correlation and regression, reveals that organizational readiness, structured implementation frameworks, and employee engagement are key determinants of successful Lean and Six Sigma adoption. The study concludes that integrating these methodologies can significantly reduce production inefficiencies, enhance product consistency, and improve customer satisfaction, thereby strengthening Peniel’s market competitiveness. This research provides practical recommendations for manufacturing firms seeking continuous improvement through systematic quality and efficiency strategies.