The Clean Box is the key to ESL technology: a physical isolation of the ultraclean environment. To prevent the re-contamination of preforms, a sterile air flow (from HEPA filter) surrounds the blowing area. This sterile air carries an ambient overpressure of 10 Pa with the same critical hygiene level that is applied to the filler/capper zone.
The blowing of the sterile preforms is performed using sterile air to maintain the sterility during the process. All surfaces in the Clean Box zone are accessible and very easy to clean. Airstar is a fully automatic, cleanable blowing machine and ensures the highest degree of hygiene in its class.
The European patented mould locking system - composed of two rings that, with a symmetrical movement, lock the two moulds together without the need of a pneumatic compensation system - reduces the number of components, minimizes air consumption and, importantly, avoids the need to sterilize the ’narrow’ compensation chamber.
Airstar 4C is fully compatible with the whole range of ESL filling machines providing a fully dry, compact–footprint, blowing and filling bloc.