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http://dx.doi.org/10.14775/ksmpe.2020.19.04.036

Study on the Effect of Gas Pressure on Bottle Wall Thickness in the Blow Molding Process  

Kim, Dong-Hwan (Dept. of Aircraft Part Engineering, IUK UNIV.)
Seol, Sang-Seok (Mechatronics Research Center, Changwon Nat'l Univ.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.19, no.4, 2020 , pp. 36-44 More about this Journal
Abstract
This study analyzed the deformation behavior of the high density polyethylene (HDPE) bottle in the blow molding process. We carried out finite element (FE) simulations using ANSYS Polyflow. First, the axisymmetric model was executed by 2D FE-simulation to determine the change of bottle wall thickness during the molding process. Then, the square model of the bottle was executed by 3D FE-simulation to gauge the effects of gas pressure on the change of wall thickness. The experiment results showed that the FE-simulations were able to upgrade the quality of the HDPE bottle in the blow molding process. These results can be used as guidance in adjusting gas pressure, as well as be extended for further study to determine process parameters such as temperatures, forming velocity, parison shape, etc.
Keywords
Blow Molding; Parison; Gas Pressure; FE-simulation;
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