BOPP AlOx Film can arrive with acceptable properties and still become difficult to convert after poor storage, condensation or rough roll handling. Receiving controls should protect the coated surface before printing and lamination.
An AlOx Film Supplier should receive the storage history when a problem occurs. Cailong recommends storage below 30°C at about 50% RH, while the converter must also control acclimation and wrapping removal.
A cold roll moved into a warm room can collect moisture when opened. Keep it wrapped until it approaches the converting-room condition. Record arrival temperature, storage duration and opening time.
Edge impacts can create wrinkles and tracking problems. Use clean lifting equipment, retain end protectors and mark coated-side orientation. Inspect the first meters for blocking, scuffing and contamination.
Track roll number, storage conditions, machine settings and defect location together. Send Cailong the storage log, structure, defect samples and barrier results before changing grade.
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