Resin Library

PET

EngineeringCrystallineHygroscopicity HighField Estimate

Drying Conditions

Temperature
120°C
Time
4-6h
Target Moisture
0.02%

A dehumidifying dryer is recommended (relatively hygroscopic).

Melt Temperature

260~290°C

Mold Temperature

130~140°C

Shrinkage

No data

Common Defects & First Checks

Silver Streak

PET: slow crystallization.

View Guide
Warpage

PET: slow crystallization.

View Guide

Field Notes

PET: slow crystallization. Mold temp controls crystalline (130-140°C) vs amorphous/transparent (20-30°C). Moisture → splay/silver. Beyond 9-type: acetaldehyde from overheating.

Got a defect with PET? Upload a photo and settings — we'll estimate the cause

Related Resins

Get it on Google Play

This data is a field-reference summary. Always verify against the resin manufacturer’s official TDS.