Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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The Filling Balance of LDPE/ABS/PA6,6 Resin in Variable-Runner-System

가변러너시스템에서 LDPE/ABS/PA6,6 수지의 충전균형

  • 박형필 (한국생산기술연구원 정밀금형팀) ;
  • 차백순 (한국생산기술연구원 정밀금형팀) ;
  • 강중근 (아주대학교 기계공학과) ;
  • 이병옥 (아주대학교 기계공학과)
  • Published : 2006.12.01
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Abstract

During the injection molding process an excessive packing can occur in the smaller volume cavity because of volumetric difference of the family-mold. It causes warpage by increased residual stress in the product and flesh by over packing. In this study, we used a variable-runner system for the filling balance of the cavities by changing the cross-sectional area of a runner, and confirmed the filling imbalance by temperature and pressure sensors. We carried out experiments to examine the influence of types of resins such as LDPE/ABS/PA6,6 on the filling balancing of the system, in order to help mold designers, who can easily adopt the variable-runner system to their design. We also examined filling imbalance in the system with CAE analysis.

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References

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