Based on the previous focus on reducing melt residence time and preventing thermal degradation of sensitive materials through hot runner structure optimization, the effectiveness of the optimization can be determined through three core dimensions:
Core Indicator Verification: Measured melt residence time is reduced by more than 30% compared to before optimization; there are no residual dead corners in the runner; and melt flow resistance is significantly reduced.
Molding Effect Verification: Sensitive material injection molded parts show no degradation defects such as scorch marks or silver streaks; the dimensional consistency of multi-cavity products is improved to over 98%, and the yield rate is significantly increased.
Long-Term Operation Verification: After 1000 hours of continuous mass production, there is no obvious material buildup or carbon deposits in the runner, and no abnormal conditions such as localized overheating and decomposition are observed.
If the above conditions are met, the hot runner structure optimization can be considered to have achieved the expected results.
