A solution for rupture of polymeric sheet in plug-assist thermoforming

摘要

Rupture of polymeric sheets is one of the practical problems during plug-assist thermoforming. This defect may occur both in the stage of mechanical stretching with plug, and in vacuum or pressure thermoforming. The results shown in our work not only leads to the understanding of the cause of this problem, but also enables us to formulate calculation of parameters that affect rupture of polymeric sheets during plug-assist thermoforming for production of axisymmetric polymeric articles.