Drying Conditions
Temperature
120°C
Time
4h
Target Moisture
0.03%
A dehumidifying dryer is recommended (relatively hygroscopic).
Melt Temperature
250~270°C
⚠ Thermal degradation risk above 280°C
Minimize residence time and avoid exceeding this temperature.
Mold Temperature
60~100°C
Shrinkage
1.5~2.2%
Common Defects & First Checks
Warpage
PBT: fast crystallization.
Sink Mark
PBT: fast crystallization.
Flash
PBT: fast crystallization.
Field Notes
PBT: fast crystallization. Mold temp dramatically affects surface & crystallinity (60-80°C amorphous / 80-100°C crystalline). Warpage from fast uneven crystallization. Above 280°C degradation begins; ~290°C releases CO/THF fumes.
Related Resins
This data is a field-reference summary. Always verify against the resin manufacturer’s official TDS.