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