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PET bottle for beverage is mostly made by the process of injection-stretch-blow. The process parameters influence the thickness distribution obviously. To research the influencing laws of process parameters on thickness distribution, first, we simulate the process of injection-stretch-blow under three different stretching velocities of 0.65, 0.7, and 0.81 m/s, second, we simulate the process under three different delaying times for blowing, such as 0.2, 0.25, 0.3 s. Because the parison needs to be blew when it is stretched in some time of the manufacturing process. Therefore, contact release must be enabled, and which can be enabled only for 3D and shell models. We choose the shell model in the simulation because it has absolutely advantage in calculating speed. The results show that the material of the bottle’s bottom and the thickness on the middle of the bottle increased, and the thickness on the neck of the bottle decrease with the increasing of stretching velocity. And the same thing happened when the delaying time for blowing increase. The increasing of stretching velocity or delaying time is beneficial to the uniformity of bottle’s thickness distribution and helps to improving compressive strength of the bottle. But we must ensure that the parison is not pulled off when the stretching velocity increases, and the impact on the parison’s temperature distribution should be minimized when increasing delaying time. In addition, numerical simulations can provide more help in estimating the thickness distribution of bottle.
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Hui, Y., Li, X., & Wang, C-h. (2007). Parametric design of packaging container structure based on solid works. Packaging, Engineering,28(12), 119–120. MathSciNet
Qin, S-x, Ding, K., & Ren, L-x. (2011). Computer simulation of isothermal blow molding for plastic containers. Packaging, Engineering,32(19), 78–81.
Tan, C. W., Menary, G. H., & Salomeia, Y. (2008). Modeling of the injection stretch blow molding of PET containers via a pressure-volume-time (PV-t) thermodynamic relationship. International Journal of Material Forming, 1(1), 799–802.
Daver, F., & Demirel, B. (2012). A simulation study of the effect of perform cooling time in injection stretch blow molding. Journal of Materials Processing Technology,212(11), 2400–2405. CrossRef
Zhou, Y., & Xin, Y. (2014). Effects of preform size on the thickness distribution of stretch-blow PET molded bottle. Engineering Plastics Application,42(4), 56–61.
Zheng, H., Zhou, C., & Yu, W. (2004). Numerical simulation of injection- stretch-blow molding process. China Plastics,18(2), 48–51.
Su, L-y, Li, X-s, & Yin, X-f. (2011). Research about the bottle structure process design based on the finite element analysis. China Plastics Industry,2, 53–55.
Yin, Z.-s., Huang, H.-x., & Liu J.-h. (2006). Study of thickness distribution of injection-stretch-blow PET molded part. China Plastics Industry, 7, 22–25.
Wang, H-j, Liu, H-j, & Geng, Z-d. (2008). Thermoforming container and its applications in packaging. Packaging, Engineering,29(9), 221–224.
Yang, Z. J., Jones, E. H., & Menary, G. H. (2004). A non-isothermal finite element model for injection stretch blow molding of PET bottles with parametric studies. Polymer Engineering & Science,44(7), 1379–1390. CrossRef
Chung, K. (1989). Finite element simulation of pet stretch/blow molding process. Journal of Materials Shaping Technology, 7, 229–239.
- Influence of Process Parameters on the Thickness Distribution of Beverage Bottles in Injection-Stretch-Blow Process
- Springer Singapore
- Chapter 75