Sonic Air Knife

Ensuring production continuity and delivering a return on investment

Highland Spring Case Study

Highland Spring have been drawing their natural spring water from the same protected land in the Ochil Hills in Perthshire since 1979. They are now the leading bottled water brand in the UK

Key objectives

Highland Spring asked CPA to
help them solve an issue with excess moisture
on the label area of the bottles, which was
causing a water in glue contamination at the
labeller. Their two main objectives were

  • Line Continuity
  • Return on Investment


A 'water in glue contamination' in a
newly installed high speed bottling line was creating
issues at the labelling machine resulting in the majority
of line downtime, costing the business
not only in monetary terms but also in quality.
Air hoses were being used to try and overcome
the issue, however, due to the speed of this line,
they were unable to impact significantly
enough to show a real difference.


After analysing and understanding the specific requirements to meet the project team's objectives, we established that a Sonic Air System would be the best product for the challenge. This system has a performance guarantee and is the most energy efficient air knife. It was more than capable of cping with the line speed ensuring the label area on the bottle was dry, meaning no water in glue contamination in the labeller machine. This ensured continuity of the production rate, meaning less downtime and therefore delivery a positive return on the investment


"The Sonic air system from CPA has exceeded expectations, we can see a reduction in line downtime by over a quarter in the year since installation. We trusted the team at CPA to deliver on our objectives and we are completely satisfied that we have the best product installed"

Jessie - Engineering Improvement Team

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