| 摘要 |
A web (1) of packaging material runs through two chambers (3, 4) from a roller (2) and, after being deflected twice by guide rollers (5), is shaped into a tube (6), filled via a filling pipe (7) and sealed to form packages (9, 10). The air, conveyed by a compressor (11) and dewatered in a water separator (13), is fed via a regulating valve (15) to a heating element (17) and provided with sterilising agent by means of an ultrasonic nozzle (19), whereupon the mist formed is mixed with hot air in a mixing chamber (18). The steam thus evolved comes into contact with the packaging material in the chamber (3), is cooled thereon, condenses and flows out partially through an outflow pipe (23). On passage through the second chamber (4), the remainder of the sterilising agent is removed from the web (1). The method permits exact control of the sterilising process without addition of stabilisers and wetting agents. Furthermore, the consumption of sterilising agent is very low. Disposable packages sterilised in this way are used for packaging liquid foodstuffs, e.g. milk. <IMAGE> |
