TWO FILMS, ONE SYSTEM
Bottom and lid:
selected together.
The bottom film is heated to form the pack cavity. The lid completes the closure and must be compatible with the bottom's sealing layer.
The bottom and lid may have different structures and thicknesses. Forming, barrier and sealing requirements are reviewed together.
Easy opening, anti-fog properties, printing and reclosure depend on the selected item and its compatibility with the application.
High-barrier PET lid · 40 μm
Non-thermoformable lidding film with a peelable seal on PET for modified atmosphere packaging. Declared structure: high-barrier biaxially oriented PET and peelable PET.
PET lid with PE and EVOH · 45 μm
Non-thermoformable, high-barrier PET/PE-EVOH-PE/PET lidding film with a peelable seal on PET for modified atmosphere packaging.
Each lid's compatibility with the bottom and the sealing conditions are validated on the packaging line.
THE PRODUCT AND ITS PRESERVATION
Vacuum and
modified atmosphere.
VACUUMRemove the air.
The vacuum process removes air from the pack before sealing. The bottom and lid must be selected with the food, its shape and storage conditions in mind.
MODIFIED ATMOSPHERE · MAPDefine the mixture.
Modified atmosphere packaging uses a gas mixture selected for the product. The composition and process are defined together with the packaging system.
Shelf life is validated with the food, cold chain and final pack. The flat film's barrier properties alone do not guarantee those of the formed pack.
