Topic: Plasma systems. Cleaning of aluminum foil. Removal of rolling oil. Annealing. Barrier films. Composite films. Cleaning of films. Film cleaning. Degreasing systems.
Openair® plasma systems for the efficient cleaning of aluminum foil
Openair®
plasma
is a simple and environmentally friendly method of cleaning
aluminum surfaces.
Composite films are used in particular in the production of beverage
and food packaging
to keep the packaging gas-tight. Here, thin aluminum foil (aluminum
layer) serves as coating. The material is additionally coated with PE
so the aluminum does not come directly in contact with the contents.
Pretreatment of aluminumRemoval of adherent rolling oils prior to the coating of composite films
The
aluminum in the film system is pretreated with Openair® plasma
to ensure a reliable bond with the PE film. All
organic substances, such as rolling oils, are split on the material
surface during plasma cleaning
and removed.
The
annealing procedure still widely used in the industry is time- and
energy-consuming in the direct comparison with Openair®
plasma pretreatment. By contrast, with the Openair® procedure, the
plasma system is integrated inline into the existing overall process.
This makes plasma pretreatment especially cost-efficient.
Openair® plasma systems for the pretreatment of aluminum foil – advantages and properties:
- Energy-saving, inexpensive and environmentally friendly
- No change in the foil’s mechanical properties
- Usual treatment width per nozzle = 10 mm (100 nozzles/m)
- Usual treatment width of the foil = 2.20 m
- Two-sided foil treatment possible
- Inline integration of the plasma system prior to winding on coils (no process interruption)
