I. Single-Cavity/2-Cavity Small Hot Runner
Applicable Scenarios: Small molds, single-point needle valves/open hot runners, total runner plate mass ≤ 10kg
Heating Rate: 3~4℃/minute
Power Limit: 100% full power output allowed throughout
Holding Time: 100℃ for 10 minutes, minimum holding time at processing temperature 10 minutes
Total Heating Time: ≤ 45 minutes
II. 4~8-Cavity Medium Hot Runner
Applicable Scenarios: Conventional precision injection molds, total runner plate mass ≤ 10kg Mass: 10~30kg
Heating Rate: 2~3℃/min
Power Limit: Full power output before 100℃, limited to 80% after 100℃
Holding Time: 15 minutes at 100℃, 15 minutes at the lower limit of the processing temperature
Total Heating Time: ≤75 minutes
III. 16~32 Cavity Large Multi-Cavity Hot Runner
Applicable Scenarios: High-speed injection molds for bottle caps, fast food containers, etc., total mass of runner plate: 30~80kg
Heating Rate: 1.5~2℃/min
Power Limit: Full power output before 120℃ Power output: limited to 70% after 120℃
Heating time: 20 minutes at 120℃, 20 minutes at the lower limit of the processing temperature
Total heating time: ≤120 minutes
IV. 64-cavity and above ultra-large multi-cavity hot runners
Applicable scenarios: Ultra-large molds for medical consumables and packaging, with a total runner plate mass ≥80kg
Heating rate: 1~1.5℃/minute
Power limit: Full power output before 120℃, limited to 60% after 120℃
Heating time: 30 minutes at 120℃, plus... Operating temperature limit: 30 minutes.
Total heating time: ≤180 minutes.
V. Material Adaptation Adjustment Rules
For processing general heat-stable materials such as PP/PE, the heating rate of all cavities can be increased by 20%, and the holding time can be shortened by 30%.
For processing easily degradable and sensitive materials such as PVC/POM, the heating rate of all cavities should be decreased by 30%, and the holding time increased by 50% to avoid local overheating and material degradation.
In high humidity environments, all cavities should have an additional 10 minutes of holding time at 100℃ to ensure sufficient moisture removal and prevent hydrolysis and degradation.
