Preserving beer freshness in plastic bottles (Part 1)
In the area of beverage filling, packaging has the function of maintaining the quality of the filled beverage as near to the original state as possible, until drunk by consumers. The first part of this contribution summarises the current conditions pertaining to filling in PET and the properties of plastic bottles.
For beverages which belong to the group of especially sensitive foodstuffs (including beer), this means that, if possible, no oxygen whatsoever penetrates through the packaging or the respective closure, that no carbon dioxide and no water vapour escapes from the packaging and that also sufficient protection from light must be ensured.
PEN bottles
In Germany, plastic bottles have not established themselves in beer filling.
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