Prediction of Flash Generation in Two-Color Injection Molding using The Rapid Heat Cycle Molding Technology

금형 급속 가열-냉각이 적용된 이색사출성형의 플래쉬 발생 예측

  • 박형필 (한국생산기술연구원 금형.성형연구부) ;
  • 차백순 (한국생산기술연구원 금형.성형연구부) ;
  • 이병옥 (아주대학교 기계공학과)
  • Received : 2010.01.18
  • Accepted : 2010.02.22
  • Published : 2010.06.01


In case of thin-wall two-color injection molding, flashing often occurs when molten polymer flows into small gap at the parting line in mold with high pressure or under the unbalanced clamping force condition. In this study, flashing was examined in the production of thin-wall notebook case with large area when the rapid heat cycle molding (RHCM) technology was applied to the two-color injection molding. The effects of the RHCM technology on the part properties and weld-lines were compared with conventional injection molding. The flashing caused by the clamping device of the two-color injection molding machine was examined and compared by experiments and CAE analyses.


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