TPU vs. EPU vs. PET: What You Can't Afford To Ignore When Choosing Screen Protection Materials

Three film materials, three completely different performance profiles. Getting the choice wrong can cost you customers, generate complaints and damage your reputation as a professional service provider.

1. Material Performance: A Quick Comparison

2. Matching the Material to the Device

• Smartphones: Focus on TPU or EPU for their clarity and self-healing properties. PET works for budget-tier flat-screen phones.
• Tablets & Laptops: PET preferred for hard-coat compatibility on large flat surfaces.
• Foldables: EPU is the only professional solution — it flexes with the fold without cracking.

3. The Cutting Challenge: Soft Materials, Precision Logic

The biggest challenge with flexible films (TPU and EPU) is their elasticity — they stretch slightly under blade pressure, which can cause misaligned sensor cutouts if the machine isn't properly calibrated.

The Purcell H310 Pro uses material-specific presets that automatically adjust pressure and cutting speed for different materials, achieving ±0.1mm accuracy regardless of whether you're cutting PET, TPU or EPU.

4. The Future-Proof Advantage

Cloud-based database updates push new templates and parameters automatically to Purcell machines. When a new device launches with a unique camera layout or punch-hole cutout, the updated template arrives within 24 hours — no manual programming required.