Material comparison
PET (APET) vs PETG
Both are clear, food-safe polyesters. APET is stiffer and lower cost for packaging; PETG is tougher in deep draws and forms without whitening — favoured for medical and heavy-duty clear parts.
PET (APET) vs PETG — side by side
| PET (APET) | PETG | |
|---|---|---|
| Clarity | Excellent (>92%) | Excellent |
| Deep-draw toughness | Good | Better — no whitening |
| Stiffness | Higher | Slightly lower |
| Cost | Lower | Higher |
| Typical use | Food trays, blisters, lids | Medical, guards, heavy-duty clear parts |
Choose PET (APET) when…
- High-clarity food packaging at lower cost
- Stiff, thin clear trays and blisters
Choose PETG when…
- Deep draws without stress-whitening
- Medical device housings and machine guards
- Tough, impact-resistant clear parts
The verdict: Use APET for economical, stiff, glass-clear packaging; use PETG where deep-draw toughness and no whitening matter — medical, guards and heavy-duty clear parts.
Frequently asked
What is the main difference?
PETG is glycol-modified to form deep draws without whitening and with higher toughness; APET is stiffer and lower cost, ideal for packaging.
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