The Research on the Heating Time of Rotational Molding

Abstract:

In the process of rotational molding, there are two important parameters, temperatures in the rotational molding machine’s oven and in the mold. It is the crux of the evaluation about the molding efficiency and products’ quality to control the time of the temperatures to reach the top. This article puts forward to two time parameters C1, C2 to show temperatures’ change in machine’s oven and in the mold during the molding processing. Besides, these two time parameters are applied to direct the structure design of rotational molding machines and molds. Meanwhile, the theoretical analysis agrees well with the experimental data from the comparison between them. Hence, the efficacy and practicality of the two parameters are well verified.

• Periodical: Key Engineering Materials (Volume 561)
• Pages: 285-290
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.561.285
• Online since: July 2013
• Authors: Liu Qin, Yu Mei Ding, Zhi Wei Jiao, Yue Xing Liu, Wei Min Yang
• Keywords: Heating Time, Large Plastic Products, Rotational Molding, Rotational Molding Machine

References

[1] S. Rahner. The last trend：rotational moulding, Kunststoffe Plast Europe 88 (1998) 6-9

[2] C.J. Chen, Thought of relevant roll-plastic process, Foreign plastic 23 (2005) 44-47

[3] R.J. Crawford, Rotational moulding of plastics, Chichester, UK, (1992)

[4] J. Liu,D. Liu, Y. Hang, Oven internal thermal environment of numerical simulation study, Architectural heat ventilation and air conditioning 25 (2006) 78-85.

[5] S. Banerjee, W.Yan, D. Bhattacharyya, Modeling of heat transfer in rotational molding, Polymer Engineering and Science 48 (2008) 2188-2197

DOI: 10.1002/pen.21164

[6] M.C. Cramez, M.J. Oliveira, R.J. Crawford, Effect of nucleating agents and cooling rate on the microstructure and properties of a rotational moulding grade of polypropylene, Journal of Materials Science 36 (2001) 2151-2161

[7] R.J. Crawford, P.J. Nugent, Impact strength of rotationally moulded polyethylene articles, Plastics Rubber and Composites Proc and Appl 17 (1992) 33-41

[8] R.J. Crawford, P.J. Nugent, A new process control system for rotational moulding, Plastics Rubber and Composites Proc and Appl 17 (1992) 23-31

[9] J.L. Shih, H.F. Kwang, Effect of enhancing fins on the heating/cooling efficiency of rotational molding and the molded product qualities, Polymer Testing 27 (2008) 209-220

DOI: 10.1016/j.polymertesting.2007.10.004