{"id":9853,"date":"2026-02-24T15:11:45","date_gmt":"2026-02-24T07:11:45","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/nf-t54-116-2\/"},"modified":"2026-04-16T09:58:49","modified_gmt":"2026-04-16T01:58:49","slug":"nf-t54-116","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/nn\/standard\/nf-t54-116\/","title":{"rendered":"NF T54-116"},"content":{"rendered":"

Key Test Standards<\/h2>\n\n\n\n

The NF T54-116<\/strong> standard specifies a test method that determines the film impact resistance<\/strong> by measuring the energy required to puncture a plastic sheet using a pendulum arm fitted with a hemispherical impact head. It\u2019s comparable to the globally recognized ASTM D3420<\/strong> standard, which evaluates the pendulum impact resistance of plastic film<\/strong> using similar principles. The Spencer impact test<\/strong> is another related method used widely in North America and serves as a benchmark for spencer impact testing equipment<\/strong>.<\/p>\n\n\n\n

While each standard varies slightly in specimen preparation, energy scales, and clamping mechanisms, they all aim to quantify the impact resistance of plastic film<\/strong> in repeatable and precise ways.<\/p>\n\n\n\n

The Principle Behind NF T54-116<\/h2>\n\n\n\n

The pendulum shock test<\/strong> described in NF T54-116 involves:<\/p>\n\n\n\n

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  • A plastic film specimen<\/strong> (typically 100\u00d7100 mm or \u00d8100 mm) clamped firmly using a pneumatic system.<\/li>\n\n\n\n
  • A pendulum with a hemispherical impactor<\/strong> (commonly \u00d838.1 mm) swings from a fixed angle.<\/li>\n\n\n\n
  • Upon striking the specimen, the pendulum\u2019s residual energy<\/strong> is measured and subtracted from the initial potential energy.<\/li>\n\n\n\n
  • The absorbed energy<\/strong> (in joules) is recorded, representing the film\u2019s resistance to puncture or tear.<\/li>\n<\/ul>\n\n\n\n

    Energy values are then normalized to the sample’s thickness to ensure consistency across material types.<\/p>\n\n\n\n

    This method is especially useful for testing flexible packaging films, laminates, barrier materials<\/strong>, and even medical pouches<\/strong>, where puncture failure is a critical concern.<\/p>\n\n\n\n

    Applications and Benefits<\/h2>\n\n\n\n

    Understanding the pendulum impact resistance test<\/strong> is essential in sectors such as:<\/p>\n\n\n\n

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    • Packaging<\/strong>: Prevents packaging failures during handling and transport.<\/li>\n\n\n\n
    • Pharmaceutical<\/strong>: Ensures drug pouches and blister films remain intact.<\/li>\n\n\n\n
    • Food and Beverage<\/strong>: Verifies the robustness of vacuum and sealable films.<\/li>\n\n\n\n
    • Medical Devices<\/strong>: Validates sterile barrier integrity under stress.<\/li>\n<\/ul>\n\n\n\n

      Benefits of this method include:<\/p>\n\n\n\n

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      • Quantitative comparison of materials during product development.<\/li>\n\n\n\n
      • Rapid quality checks during mass production.<\/li>\n\n\n\n
      • Compliance with astm standards for impact testing of plastics and global norms.<\/li>\n<\/ul>\n\n\n\n

        How to Conduct a Film Impact Resistance Test <\/h2>\n\n\n\n

        1. Prepare the Specimens<\/strong>
        Cut ten specimens to the required size (100\u00d7100 mm) and condition them at 23\u00b0C \u00b1 2\u00b0C for at least 2 hours.<\/p>\n\n\n\n

        2. Select Test Parameters<\/strong>
        Choose an appropriate impact head and counterweight based on material strength. Ensure that energy absorption falls within 10\u201380% of the full scale.<\/p>\n\n\n\n

        3. Perform the Test<\/strong>
        Secure the specimen using pneumatic clamps. Release the pendulum, allowing it to strike the center of the sample.<\/p>\n\n\n\n

        4. Record Results<\/strong>
        Read absorbed energy from the dial. Note whether the specimen exhibits brittle or ductile failure.<\/p>\n\n\n\n

        5. Report Findings<\/strong>
        Include energy values (J), normalized by specimen thickness (\u00b5m), average, standard deviation, and qualitative observations like perforation appearance.<\/p>\n\n\n\n

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