Safety
Obligations of the operating company
11.06.2014 17
1.7.11 Checking the packs
CAUTION
Health hazard!
Faulty or damaged packs (reject packs) can have far-reaching con-
sequences, for example, spoiled products.
Spoiled products can pose a health hazard.
¾ Check packs on a regular basis during running operation.
¾ Do NOT put faulty or damaged packs (reject packs) into circula-
tion.
Info
It is the operating company's duty to determine the overall testing
procedure.
Testing procedure
Depending on the film pouch and the demands placed on the packs,
various types of testing procedures are available, e.g.:
• Check seal seam width.
• Visual inspection: Asses the pack optically.
• Storage test: Store a good pack for a defined period and then re-
inspect.
• Stacking test: Stack good packs on top of each other for a defined
period and then re-inspect.
• Check the seal seam strength with a tensile testing machine.
• Low-pressure test (for vacuum packs).
• Measurement residual oxygen (for gas-flushed packs).
The following faults can result in a pack not being airtight:
• A leaky seal seam. Possible reasons:
– The inside of the packaging material is contaminated by product
in the seal seam area.
– The sealing time is too short.
• Damage to the pack caused e.g. by sharp-edged products.
Time of inspection
• After machine start-up.
• When a defined time interval was reached during running opera-
tion.
• When the pack size was changed.
• When other types of films or other film thicknesses are being used.
• When spare parts or wearing parts were built in.
• After faults to the machine were eliminated.
• After changes to the machine settings.
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