Feeding area 30 ~ 50℃ (50℃)
Zone 1: 160 ~ 250℃ (200℃)
Zone 2: 200 ~ 300℃ (220℃)
Zone 3: 220 ~ 300℃ (240℃)
Zone 4: 220 ~ 300℃ (240℃)
Zone 5: 220 ~ 300℃ (240℃)
Nozzle: 220 ~ 300℃ (240℃)
It is suggested that the temperature in brackets is the basic setting point.The stroke utilization is 35% and 65%.And the ratio of mold flow length to wall thickness is 50:1 to 100:1.
The melt temperature is 220 ~ 280℃, the temperature of the plastic cylinder is 220℃, and the mold temperature is 20 ~ 70℃. It has good flow performance, avoiding using too high injection pressure of 80 ~ 140MPa. Expect some thin-wall packaging containers, it can reach 180MPa.
Avoid product shrinkage, it needs a long time to keep the product pressure (about 30% of the cycle time), about 30% ~ 60% of injection pressure. The back pressure is 5 ~ 20MPa.
Injecting speed. High injecting speed (with accumulator) is required for thin-walled packaging containers. Medium injection speeds are often more suitable for other types of plastics.
High screw speed (linear speed of 1.3m/s) is allowed as long as the plasticizing process, which is completed before the end of the cooling time.
Measuring stroke: 0.5 ~ 4D (minimum ~ maximum).The 4-D metering stroke is important to provide a long dwell time for the melt.
The residue of PP injection moulding: 2 ~ 8mm, depending on the measuring stroke and screw speed.
Pre-drying: not required. If the storage conditions are not good, it can be dried at 80℃ for 1h.
100% recovery
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