There are some innovative "one way" disposable, recyclable plastic kegs available. They are being utilized with certain import products and may begin to become available with some domestic brewers.
One unique aspect of a design feature is that the pressure source against the keg does not come in contact with the beer. This is very advantageous as product quality will be not be compromised, less exposure to the dispensing system.
These packages will become more prevalent once they become cost effective. For now, it is difficult to compete with the stainless kegs as they can be in service for decades and have paid for themselves many times over.
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