PET Preform Molding Automatic Drying & Feeding System

PET is highly hygroscopic.

Challenges: Even trace amounts of moisture can trigger a hydrolysis reaction during the high-temperature injection molding process, leading to:

 Molecular chain breakage, resulting in reduced preform strength and brittleness.

 Silver streaks, bubbles, and haze on the product surface, affecting transparency.

 Increased acetaldehyde (AA) content, impacting the taste of beverages.

 Production interruptions, higher defect rates, and increased costs.

Conclusion: Therefore, a stable and efficient automatic drying and conveying system is an absolute prerequisite for successfully producing high-quality PET preforms.