Material Drying
5 görüntüleme
Bubbles and silver streaks in PAR products due to insufficient drying
Sorun Belirtisi
Bubbles and silver streaks appear inside or on the surface of PAR transparent products.
Neden Analizi
PAR has high heat resistance and strong moisture absorption; when the moisture is >0.02%, the moisture vaporizes during high-temperature processing, producing bubbles and silver streaks.
Çözüm
Dry at 120-140°C for 4-6h to moisture <0.02%; use a dehumidifying dryer with a dew point ≤-35°C.
Temel Çıkarım
Strict PAR drying requirements are the prerequisite for high transparency.
Bu faydalı oldu mu?
0 kişi bunu faydalı buldu
Geri bildiriminiz için teşekkürler!