Article
  • Experimental and Computer Simulation of Stretch Blow Molding for Carbonated Soft Drink PET Bottle

  • In Young Woo, Kyung Woo Nam*, Byung Jun Kim**, and Min-Young Lyu†

  • Department of Mechanical System Design Engineering, Seoul National Univ. of Science & Technology, 232 Gongneung-dong, Nowon-gu, Seoul 01811, Korea
    *Samyang Packaging Co., 31 Jongno 33-gil, Jongno-gu, Seoul 03129, Korea
    **Halliburton, 300 N Sam Houston Pkwy E, Houston, TX 77032, USA

  • 탄산음료용 PET병 연신 블로우 성형의 실험 및 컴퓨터 모사

  • 우인영 · 남경우* · Byung Jun Kim** · 류민영†

  • 서울과학기술대학교 기계시스템디자인공학과, *㈜삼양패키징, **Halliburton

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.

Abstract

Polyethylene terephthalate (PET) bottles for carbonated soft drink are fabricated by stretch blowing of preforms. In this study, the shaping process of pressure-resistant PET bottles by blowing preforms in the stretch blowing process was examined through experiments. Then, the thickness distribution and the stretch ratio for each location of the blown bottle were measured. Computer simulation of the stretch blow molding of the pressure-resistant bottle was performed by applying the preform and process conditions used in the experiment. In the simulation, the thickness and stretch ratio distributions of the blown bottle, the mold contact point of preform during blowing process, and the blowing path by location of preform were compared according to the physical properties of PET. Finally, the thickness distribution, stretch ratio of the blown bottle were compared through experiment and simulation.


탄산음료병용의 polyethylene terephthalate(PET)병은 프리폼의 연신 블로우로 성형된다. 본 연구에서는 실험을 통해 연신 블로우 공정에서 프리폼이 블로잉 되어 내압 PET병이 성형되는 과정을 파악하였다. 그리고 병의 위치별 두께 분포와 연신비를 측정하였다. 실험에서 사용한 프리폼과 공정 조건을 적용하여 내압병의 연신 블로우 성형을 컴퓨터 해석하였다. 해석에서는 PET의 물성에 따라 성형된 병의 두께 및 연신비 분포, 프리폼의 금형 접촉 시점, 프리폼 위치별 성형경로를 비교하였다. 그리고 실험과 해석의 두께분포, 연신비를 비교하였다.


Keywords: polyethylene terephthalate bottle, stretch blow molding, computer simulation, thickness distribution, stretch ratio.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2022; 46(2): 257-265

    Published online Mar 25, 2022

  • 10.7317/pk.2022.46.2.257
  • Received on Dec 2, 2021
  • Revised on Dec 23, 2021
  • Accepted on Jan 4, 2022

Correspondence to

  • Min-Young Lyu

  • Department of Mechanical System Design Engineering, Seoul National Univ. of Science & Technology, 232 Gongneung-dong, Nowon-gu, Seoul 01811, Korea

  • E-mail: mylyu@seoultech.ac.kr