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Technical support Processing guide

- Note -
The processing guide should be used as a reference only. There needs to be some adjustment, depending upon a product design and ambient conditions.

- Pre-drying -
Polycarbonate resins absorb approximately 0.2% of moisture at a room temperature. Moisture absorbed can cause degradation of properties during the moulding process. Before moulding, the pellets should be dried in a dryer to moisture content equal to or less than 0.02%.

Tray dryer with hot air system: For more than 4 hours at 120ーC with the layer of pellets in trays not higher than 3 cm.

Hopper dryer : Keep at 100 ~ 120ーC to avoid reabsorption.

Grades
Cylinder Temperature [ーC ]
Mold
Temp
[ーC ]
Injection
Pressure

Injection
Speed
Back
Pressure
Screw
Rotation
Speed
(rpm)
Nozzle
Front
Mid
Rear
K-20/30/40
K-(20/30/40)MRA
K-(20/30/40)UV
K-(20/30/40)UVR
K-20T(MRA/UV/UVR)28
K-30FR
K-30FRT12
KFN-30
KFN-30T12
K-30F5
250

290
270

300
270

300
270

300
75

100
500

1800
Mid

High
50

100
40

80
KG-(10/15/20/30)MRA
KGN-(10/15/20/30)MRA
KG-20F10
KG-30F15
K-30CF10
KG-15CF15
280

300
290

310
280

300
270

300
80

120
500

1500
Mid

High

100
40

80


Grades
Melt
Temp
[ーC ]
Die
Temp
[ーC ]
Adapter
[ーC ]
Cylinder Temperature [ーC ]
Screw
Rotation
Speed
(rpm)
Zone4
Zone3
Zone2
Zone1
K-75E
K-75EUV
260

290
260

290
260

290
270

300
270

300
270

300
260

290
20

100
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