31/07/2026
PET Moisture PPM Determines IV Retention
đź”— PET Damage Chain
Moisture Absorption → Hydrolysis → IV Drop → Strength Loss → Product Defects
đź’ˇ Key Facts About PET & Moisture
1. Even dry-looking PET pellets absorb massive moisture during storage & transport
2. Residual water breaks molecular chains during melting, causing irreversible IV loss
3. High-IV PET is far more sensitive to moisture than standard grades
📌 Common Production Issues Triggered by Excess Moisture
• Filament breakage & unstable yarn in spinning
• Bubbles, poor clarity in film/sheet extrusion
• Silver streaks & weak preforms for bottle injection
• Higher scrap rate across all PET applications
✅ Our Solution: Aceretech VacuPure™ Vacuum Drying System
• Stabilizes residual moisture at 15–50ppm
• Effectively inhibits hydrolysis and retains PET IV & molecular integrity
• Delivers decontamination & devolatilization, ideal for food-grade & bottle-to-bottle rPET
• Optimizes drying efficiency and energy consumption
If you struggle with unstable PET quality, feel free to share your PET grade, target IV and daily capacity.
We offer free moisture testing and customized process recommendations for global partners.