Abstract: In this paper, the importance of heat transfer mechanism in the rotational molding process was first introduced, and then heat transfer at every phase of rotational molding process was described. Both domestic and international research work on heat transfer model of rotational molding process were summarized. These models were categorized and compared, and their limitations were analyzed. Moreover, the future trend of research work was also prospected.

Key words: rotational molding, heattransfer model, numerical simulation, research progress