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Moulding Condition
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Moulding Condition

 

Type of
Plastic
Resin		 Pre-drying
(oC)		 Melting
Temp.
(oC)		 Injection
Pressure
(kg/cm2)		 Screw
Speed
(rpm)		 Mould
Temp.
(oC)		 Shrinkage
Rate
(%)		 Regrind
Ratio
(%)		 Clamping
Force
(ton/in2)
AS 70-85;
1hr.		 180-250 50-120 50-120 40-70 0.2-0.7 0 2
ABS 75-90;
1.5 hr.		 180-250 60-120 70-100 40-75 0.4-0.7 15-25 2
GPPS 60-80;
1hr.		 170-250 50-100 60-100 50-70 0.2-0.8 0 2
HIPS 60-90;
1hr.		 175-220 60-110 60-100 55-75 0.2-0.8 15-25 2
PP
 		 N/A 180-270 50-120 60-90 40-70 1.0-3.0 15-30 2
PE
 		 N/A 180-250 50-100 60-100 35-55 1.5-3.5 15-40 2
PMMA 80-90;
a2hr.		 220-240 80-140 60-80 55-75 0.2-1.0 0 4
PVC N/A 180-210 70-120 60-90 40-60 Hard: 1-1.5;
Soft: 2-2.3		 15-25 2
PC 90-110;
2hr.		 260-320 70-120 40-60 70-95 0.5-0.7 10-25 4-6
PA 80-90;
4hr.		 255-285 70-100 60-80 60-90 0.6-2.0 10-35 3-4
POM
 		 N/A 175-210 50-100 50-80 60-80 2-3.0 10-50 4-5
PSF 120-140;
4-6hr.		 300-360 80-130 80-130 85-140 0.5-0.7 10-30 6
PBT 80-120;
3-4hr.		 240-260 80-130 60-80 50-70 1.7-2.3 10-30 3-4
CA 70-90;
1-4hr.		 195-225 60-100 60-100 50-85 0.2-0.7 5-15 2-3
PPO 75-90;
1.5-3hr.		 240-280 70-120 70-90 60-80 0.5-0.7 10-25 2-3
PET 130-150;
4-5hr.		 250-275 50-80 50-70 90-120 1.5-2.5 10-30 4-6

 

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