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New lightweight bottle neck designs for PET bottles released by SIPA

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article image New lightweight bottle neck designs for PET bottles

Global leader of stretch blow moulding machines for the production of PET bottles, SIPA, have released four new lightweight bottle neck designs that are suitable for water, carbonated soft drinks, and hot-fill containers.

PMCI, the PET moulds and containers division of SIPA have designed the new bottle necks for PCO 1810 standard carbonated soft drink closures that use the same height of the thread finish (21mm) as standard designs, however offer 27% material savings, bringing the individual weight down from 5.1g to 3.7g per neck.

No changes are required to the neck shape of the PET bottles, and the solution is fully compatible with existing bottle lines by converting existing thread to the PMCI design.

A US mineral water company is already utilising this new technology and has patented a new design for an Alcoa bottle neck with a 26mm thread finish, taking the weight down from 2.4g to 1.8g. The result being a 25% saving in packaging costs.

Hot fill technology has traditionally required the use of robust packaging, however PMCI claim the new bottle neck designs enable significant savings for 28mm necks. The Hotlight 28 neck weighs just 3.8g, half that of the standard 7.8g. This evolution in neck design allows for the production of hot fill and carbonated soft drink products on the same line, without any compromise to sealing.

SIPA are represented in Oceania by HBM Packaging & Plastics Technologies .

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