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Packaging, Seal Strength Testing

Posted by Michael Price on

Package seal strength testing shows the peel separation force required to separate two flexible materials that are bonded together. This test is also called a T-Peel test.

Applications
  • Testing the seal on a sterilization pouch (Sterile Barrier System).
  • Test the seal on food packaging
    Purpose
    • Confirm the reproducibility of the sealing process. Create a baseline to screen for changes negatively affecting the packaging seal.
    • Determining if hot tack is creating a good seal.
    • Adherence to design specifications
    • Ease of opening for the user.
    • Determine the packaging's ability to protect product with the package.
    Standards
    • ASTM F88/F88M Standard Test Method for Seal Strength of Flexible Barrier Materials
    • ASTM D1876 Standard Test Method for Peel Resistance of Adhesives (T-Peel Test)
    Procedure

    Ends of the T-Peel sample are clamped using vice grips and pulled using a motorized test stand until the sample as separated. The force required to separate the samples is recorded. 

    Equipment needed
    • Motorized test stand-Settable speed is required for this test.
    • Force gauge or load cell
    • Manual or pneumatic vice grips
      • Pneumatic is the better choice when running a higher quantity of tests. 

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