Technology Data
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Molding Guide
Injection conditions
| Item | PP | PA6 | PA66 | |
|---|---|---|---|---|
| Molding Temp. | ℃ | 210 ~ 250 | 240 ~ 280 | 280 ~ 300 |
| Speed | % | Low or Medium | Low or Medium | Low or Medium |
| Injection Pressure | bar | Medium | Medium | Medium |
| Back Pressure | bar | 1 ~ 5 | 1 ~ 5 | 1 ~ 5 |
| Hold Pressure | bar | NJ/P 50%↓ | NJ/P 50%↓ | NJ/P 50%↓ |
| Mold Temp. | ℃ | 40 ~ 70 | 60 ~ 90 | 60 ~ 100 |
| Melt Temp. of Resin | ℃ | 240 | 270 | 290 |
| Cushion | mm | 7 ~ 10 | 7 ~ 10 | 7 ~ 10 |
| Drying Condition | Dehumidified Air Dryer | 80℃ X 2hr | 80℃ X 5hr | 80℃ X 5hr |
| Mold | Runner | Optimum : Round Channel (D = 2~3 X Product thickness max) → Typical : 6~12mm Avoid of sharp edges in the diversion R = 1/2D |
||
| Gate | D = Product thickness max + 2mm ↑(6mm↑) | |||
| Screw/Nozzle | Screw Diameter | 40mm ↑ | Zone distribution | 60% feed, 20% transition 20% metering |
| L/D | 18 ~ 22 | Compression ratio | 1 : 1.8 ~ 1 : 2.5 | |
| Pitch | 1D | Orifice diameter | 4mm ↑ | |
