Description
Process sequence
26 11.06.2014
Evacuation Evacuation if chamber and film pouches.
Gas flushing (option) Infeed of inert gas.
Sealing Sealing of film pouches.
2.6 Times which have to be set
Times must be set for evacuation, gas flushing and sealing. The
times depend on the product and the film pouch used. A pressure
difference of at least -0.35 bar is required during the evacuation and
gas flushing processes, so that the chamber lid remains closed. A
pressure difference of at least -0.35 bar is also required before the
sealing process, so that the film pouches can be sealed. The pres-
sure difference can be read at the pressure display on the machine
control.
Fig. 11: Areas on the pressure display
Time Explanation
Evacuation time Air is suctioned out of the chamber and the film
pouches during this time. The longer the evacua-
tion time, the better the vacuum and the quality of
the seal seam. Too long an evacuation time can
damage sensitive products (e.g. raw or pre-cooked
pasta, cooked vegetables). In the case of liquid
products, the evacuation process should be
stopped with the <Stop> key shortly before the
product begins to boil.
Recommended value: at least 3 s
In the case of a packaging procedure with gas
flushing, the evacuation time must be extended.
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