Prioritizing critical parts of crumb rubber product by using quality function deployment (QFD) phase II : Product design matrix

Abstract

Product quality is the most important thing in product design. To produce a qualified product, the designer must adjust the technical characteristics to the customer’s needs, so that the critical part of the crumb rubber product can be determined. The critical part of crumb rubber product is carried out using the second phase of quality function deployment (QFD) method. Quality Function Deployment (QFD) is a method used to improve the quality of a product by considering consumer needs associated with technical characteristics, and to obtain critical part priority, the designer must develop QFD phase II, which is a continuation of QFD phase I. In QFD phase I, the result obtained is a priority of technical characteristics, so the priority of technical characteristics becomes input for QFD phase II as attribute of consumer needs. The results obtained from QFD phase II method in this study is the critical part priority which is used as the corrected part of a crumb rubber product to improve the quality of the crumb rubber product type SIR 20. The critical part priority obtained is the resistance of the rubber product to the heat, the resistance of plasticity, and plastic resistance to heat.