The blow molded parts made of engineering resins usually possess poor surface quality, and thus cannot satisfy the requirement of high-gloss appearance in some applications. For this reason, a rapid thermal cycling extrusion blow molding (RTCEBM) technology was developed, the process principle was presented and its process procedure optimization was also analyzed. Aiming at obtaining uniform temperature distribution on both mold cavity and core surfaces, a two-step optimization method based on sequential quadratic programming (SQP) algorithm wa...
