Packaging testing techniques

Physical characterisation refers to the process of measuring and analysing various physical properties of materials. Some common techniques used for physical characterisation are:

 

 

Mechanical property testing

 

Pack integrity, accessibility and seal testing

 

Barrier, permeation and headspace testing

 

Appearance evaluation

 

 


Mechanical property testing

 

In manufacture, transport and use packaging materials and packaging are intentionally or inadvertently subject to distortions and loadings. These can damage the goods contained and cause pack failure. The mechanical properties of the packaging materials determine their manufacturability/conversion into packaging.

 

It is important, therefore, to test of packaging materials in ways (modes of deformation) and environments representing the real-life situation. By mechanical testing, manufacturers can ensure that packaging materials meet quality standards, provide adequate protection to enclosed products, and withstand the demands of handling, transportation, and storage.

 

Equipment

 

  • Food safe cabinets (conditioning)
  • Zwick050 Universal Testing System
  • 3D printer (name?)
  • Emmerson type edge crush fixture
  • Stiffness Image

    Food & consumer goods capabilities & applications

    • Evaluate conditioning of packaging against temperature and moisture properties
    • Tensile strength testing
    • Stiffness, flexure and bending assessment
    • Identifying potential tear weaknesses
    • Evaluate ability to withstand compression
    • Puncture testing
    • Peel, adhesion and delamination assessments
    • Measuring static and dynamic coefficients of friction

Pack integrity, accessibility & seal testing

 

Even if the flexible and rigid packaging materials are suitable strong and durable it is usually the quality of the seams created to form the package as well as seals created on the packaging line to enclose the pack content which determine pack integrity. 

 

Equipment

 

  • Zwick050 Universal Testing System
  • Lippke 5000 Burst / leak tester
  • RDM HSE-3 Heat Sealer
  • RDM HT-2PC Hot Tack Tester
  • P1057365

    Food & consumer goods capabilities & applications

    • Burst, leak creep and bubble testing measuring pack integrity
    • Assessing seal creation, strength and structure
    • Hot tack testing, ensuring seal integrity immediately after creation
    • Measuring packaging closure, opening and resealing

Barrier, permeation and headspace testing

 

The barrier presented by packaging films, ranging from coated papers to metallised multilayer composites, is an important factor in determining the shelf-life of perishable goods within the flexible film packaging. 

 

Equipment

 

  • MOCON PERMATRAN-W® Model 3/34G equipped with an IR sensor
  • Mocon OX-TRAN® Model 2/22 L equipped with a Coulombic sensor
  • Wittgas MAPY 4.0 Gas Analyser
  • Permatran Closeup

    Food & consumer goods capabilities & applications

    • Testing water vapour transmission rate to assess packaging permeability to water vapour
    • Oxygen transmission rate test to assess permeability to oxygen and risk of oxidisation
    • Oxygen and carbon dioxide headspace analysis for modified atmosphere packaging
    • Testing aroma barrier and barrier to volatiles

Appearance evaluation

 

The appearance of packaging plays a crucial role in consumer perception, product marketing and communication with the customer.

 

Equipment

 

  • UV-visible spectrometer with an integrating sphere
  • Agora | Spectrophotometer That Measures For Colour & Gloss
  • Spectrophotomter

    Food & consumer goods capabilities & applications

    • Luminous transmission and haze tests measures amount and scattering of light as it passes through the packaging
    • Range of instruments to measure gloss levels of packaging
    • Measure packaging colours to ensure consistency across range of situations
    • Precisely measure print quality on packaging