厚肉成形品の成形条件の最適化

抄録

In　an　injection　molding　process,　the　products　with　a　thickness　over　5mm　are called　thick　walled　products.　Many　of　these　products　have　problems　such　as　sink,voids　or　abnormal　shrinkage,　and　therefore　considered　difficult　products　to　mold. To　avoid　such　defects,　molding　time　and　cooling　time　have　to　be　extended,resulting　in　long　overall　molding　cycle　time.　In　order　to　improve　the　process,　the generic　function　was　considered　where　"material　must　be　uniformly　filled　to　any spot　inside　the　mold."　After　the　optimization　using　this　generic　function, molding　cycle　time　was　reduced　and　the　quality　loss　was　cut　to　one　third.