Surface Treatment
On finished glass container, we can further treat the bottles for certain desired effect:
Hot Treatment
Hot treatment on extermal surface of the glass vials: it is an external spraying of SnO2 to impart extra strength to the glass bottles against abraision, vibration, shocks and stress from logistic handling and pharmecutical process. It reduces breakage and bump checks. The spraying is done at hot end in the glass manufacturing process, it is then call Hot Treatment.
Cold Treatment
Cold treatment on external surface of the glass vials: it is an external spray coat of non ionic surfactant: SIMULSOL, α-glycols, PE monostearate. It enhances the gliding property of the glass surface, so that the glass vials can resist stress from squeezing and squambling on feeding line, turning table. Reduce breakage and bump checks. The spraying is done just after the annealing lehr closed to the cold end of the glass manufacturing process, it is then called Cold Treatment.