Wine bag with metallised film

PROBLEM

Metallised films are used to reduce the risk of ingress or oxygen though the film layers. This requires the use of multiple layers of film being used in the production of wine in a bag process. 

Aligning multiple layers and minimising air being trapped between layers are required in the production of the packaging.  

SOLUTION

Applying a static charge to the poly-film layer and using the conductive properties of the metallised film as an earth potential allows the layers to be bonded together. 

Reversing the polarity of the charge on the different unwinds and then rotating the polarity as all the layers are combined. This process pulls the layers together, removing any air pockets that might be trapped between the layers