PRODUCTIVITY EVALUATION WITH A NEW STIFFNESS-BASED EJECTION CRITERION OF INJECTION MOLDING

摘要

In this paper a new stiffness-based ejection condition for injection molding is introduced and used for evaluation of different polymer materials. Comparison with industrial practice and other commonly used criteria, such as ejection temperature, indicates that this approach not only can be an alternative when the ejection temperature of the polymer part is unavailable, but also is more effective to help designer improve the design or reduce the cost by increasing the production rate while simultaneously ensuring injection molded part quality.