Ice cream packaging closure and integrity testing

Case study
Ice cream carton lid sealing force test and graphical results
Ice cream carton lid sealing force test and graphical results
Ice cream and food carton integrity testing fixtures
Ice cream and food carton integrity testing fixtures


  • MultiTest 2.5-i test stand and ILC intelligent loadcell
  • EmperorTMfully programmable force testing software
  • Custom-designed fixtures and extended length compression plates


  • Multiple integrity tests on one testing station
  • Accomates different designs


Low temperature conditions and food hygiene standards add challenges to the design and materials specification of this type of thermoformed plastic packaging. Optimal functionality and strength must be achieved, whilst maintaining ease of opening and closing of the container.

A leading food packaging manufacturer required a method of testing the effort to show the lid was fully engaged when closed onto its various ice cream containers. The huge choice of lids and containers available in various shapes, materials and capacities meant that a solution, which provided the flexibility to test all options, was essential.


Mecmesin configured a software-based force testing system with enough space and load capacity to accommodate the full range of ice-cream containers. EmperorTM software delivered the simple step-by-step programmability to enable the R&D and QA teams to develop the testing criteria unique to their products. 

With packaging used by a consumer to store and preserve frozen food, it is vital that the container lid is easy to close and gives a positive feel of being engaged when successfully sealed. The EmperorTM software automatically detects the initial peak force as the lip of the lid is pushed onto the container indicating a successful seal. If this initial peak force is within the specified tolerances the Mecmesin test system gives the operator an immediate pass/fail indication. 

To achieve the flexibility in design whilst remaining within the customer’s cost-budget, Mecmesin took full advantage of its 3D-printer facilities to produce a special lower fixture which supports the container evenly around the full perimeter of the lid. In addition the customer benefitted from this approach by investing in extra 3D-printed fixtures, which could be quickly and easily interchanged to test for top-load column crush properties and puncture resistance of the container base.

Test equipment

  • MultiTest 2.5-i computer-controlled force testing system 
  • EmperorTM fully programmable force testing software
  • Quick Change rectangular and circular compression plates and extended length adapter
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Mecmesin/PPT Group, UK