A Study on the Molding Technology for the Preform of Blow Molding Through Compression Molding

압축성형을 통한 블로우 성형품용 프리폼 성형기술 연구

  • 최성현 (서울산업대학교 대학원) ;
  • 민형기 (서울산업대학교 대학원) ;
  • 류민영 (서울산업대학교 금형설계학과)
  • Published : 2007.02.01


Novel compression molding system for preform has been developed in this study. The preforms for injection blow molding and injection stretch blow molding are being manufactured by injection molding. However it contains gate mark that affects the bottom crack in the PET bottle. The compression molded preform does not contain gate mark, thus the appearance quality of bottle has been increased and the residual stress near gate(bottom of the bottle) has been reduced. The thickness distributions, haze, and transmittance are well accepted for the preform. Also, flow characteristics of the resin between a core and cavity could be analyzed through computer simulation.


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