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Study on Preform Design for Reducing Weight of PET Packaging Bottle

고분자 패키징 용기 중량 절감을 위한 프리폼 설계에 관한 연구

  • 김정순 (아주자동차대학 자동차계열)
  • Published : 2010.01.31

Abstract

This study presents the preform injection molding and the blow molding of the injection stretch-blow molding process for PET bottles. The numerical analysis of the injection molding and the blow molding of a preform is considered in this paper using CAE with a view to minimize the warpage and the thickness. In order to determine the design parameters and processing conditions in injection/blow molding, it is very important to establish the numerical model with physical phenomenon. In this study, a three dimensional model has been introduced for the purpose and flow simulations of filling, post-filling and cooling process are carried out. The simulations resulted in the warpage in good agreement with the measurements. Also, from the result of numerical analysis, we appropriately predicted the warpage, deformation and thickness distribution along the product walls.

Keywords

Preform;Injection molding;Blow molding;PET bottles

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