Plastic closures and containers manufacturer Portola Packaging is all set to launch a new line of plug-seal, high-density polyethylene (HDPE) closures for single and multiserve, hot-fill and aseptic beverage packaging applications.

The new 38mm GreenLyte one-piece closures are a cost-effective alternative to traditional two-piece polypropylene (PP) types, which are used for juices, ready-to-drink teas, isotonics, enhanced waters, low-acid nutraceuticals and aseptic-filled beverage products.

Portola Packaging vice president of business development Roy Robinson said the company’s internal tests show that the new closures equal or surpass performance attributes that are offered by traditional two-piece closures.

"We believe that this launch will be of significant interest for beverage brand owners looking for ways maintain or improve performance, while reducing costs," Robinson said.

According to the US-based company, the one-piece plug design of the closure minimises costs for brand owners due to shell lightweighting, liner elimination and material choice.

The GreenLyte line is made from HDPE and its plug construction is claimed to do away with the need for a liner and avoids opening issues.

GreenLyte plug-seal closures also offer multiple production line efficiencies, while the seal design and low coefficient of friction aids application over a wide range of capper settings.

"In addition to the cost, production and performance benefits, the GreenLyte™ launch provides an ideal conversion opportunity for those hot-fill beverage products still using 43mm finishes," Robinson added.

Instead of converting to a traditional 38mm two-piece closure from a 43mm two-piece, beverage brand owners can now go into a 38mm one piece plug closure straight away, enhancing their cost and environmental profile.

Portola Packaging manufactures stock and custom tamper-evident plastic closures and containers for dairy, juice and other food segments.