pertainer

A pertainer, more commonly spelled Petainer, is a pressurized beverage container made from polyethylene terephthalate (PET) designed to function like a keg. While the term can be used generically for PET-based keg containers, it is most closely associated with the Petainer product line and brand name.

Construction and operation: A pertainer consists of a rigid PET shell housing a dispensing valve or coupler and a pressurization system, typically using carbon dioxide or nitrogen to push the beverage out through the tap. The design aims to provide a sealable, reusable, and recyclable alternative to metal kegs.

Applications and sizes: Pertainers are used for beer, cider, wine, cola, and other carbonated beverages. They come in a range of capacities suitable for on-premise bars, restaurants, and wholesale distribution, and are common in regions with established PET packaging supply chains.

Advantages and considerations: The PET keg is lighter than steel, reducing transport weight and breakage risk, and is generally recyclable where local facilities exist. However, permeation of CO2 and oxygen, cleaning requirements, and compatibility with existing dispensing equipment are important considerations for brewers and distributors.

Environmental and regulatory notes: PET is widely accepted as a food-contact material and is recyclable in many jurisdictions, though recycling performance varies by locality. Manufacturers emphasize closed-loop recycling and safe product contact materials; users should follow sanitation and labeling guidelines.