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This paper present a method to evaluate priorities of critical to quality (CTQ) factors and to derivate key process input variables (KPIVs) using analytic hierarchy process (AHP). The presented method is applied in film-making factory used for flexible packaging units. The capability of a company is very limited, therefore focusing one’s capability on high priority factors is also important. Generally there are too many factors to control them effectively. In addition, it is not easy to verify the relationship between input variables and quality characteristics in real field production level. AHP will be a good way to decide priorities of which are not clearly defined. The presented method will be helpful in evaluating competitiveness of companies by utilizing one’s capability effectively.