polymer melts;  Molding;  vibration technology;  Chaotic motion;  Chaos control

The application progress of vibration technology in the polymer molding process, the basic concept of chaos and the method of chaos control were introduced, and it was pointed out that the aggregate state of polymer is a chaotic state, the transition process of polymer state is chaotic motion, and the polymer melt rupture phenomenon is a manifestation of chaotic motion. The molding process of polymers is a complex chaotic motion. The existence of vibration waves controls and interferes with the chaos of polymer melt flow and the chaos of viscoelasticity, and the study of the motion state of polymer melt under the action of vibration wave needs to be carried out by combining chaos theory with practical experimental results.