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Technology Data

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Molding Guide

Injection conditions

사출성형 조건표
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 ↑