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ASTM F392

ASTM F392 is a standardized testing method designed to assess the durability and barrier integrity of flexible packaging materials under repeated flexing conditions. This test is essential for industries that rely on high-performance flexible packaging, such as food, pharmaceuticals, and medical devices.

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ASTM F392 - Gelbo Flex Test Method

De Gelbo Flex Test is the primary technique used in ASTM F392. It involves repeatedly twisting and compressing the flexible material to simulate real-world mechanical stress. This test helps manufacturers evaluate how well a material maintains its mechanical strength and barrier properties after prolonged flexing.

Test Procedure

  1. Specimen Preparation: The material is cut into 200 mm × 280 mm sheets.
  2. Mounting on the Flex Durability Tester: The sample is attached to two rotating mandrels.
  3. Flexing Process: The specimen undergoes a series of twisting and crushing motions at a rate of 45 cycles per minute.
  4. Evaluation: The material is tested for flex-induced pinholes, barrier degradation, and structural failures.

Testing Conditions and Classifications

The ASTM F392 test is performed under standardized atmospheric conditions (23 ± 2°C and 50 ± 5% relative humidity) and offers different conditioning levels:

  • Condition A: 1 hour (2700 cycles)

  • Condition B: 20 minutes (900 cycles)

  • Condition C: 6 minutes (270 cycles)

  • Condition D: 20 cycles

  • Condition E: 20 cycles (partial flexing)

Conditioning levels A, B, and C assess flex resistance, while D and E evaluate barrier performance under minimal flexing.

This test provides crucial data on:

  • Pinhole formation and flex failure

  • Barrier integrity for moisture and gas transmission

  • Suitability of flexible packaging for high-stress environments

By incorporating ASTM F392 testing, manufacturers can ensure their packaging materials meet industry standards for durability and performance, reducing the risk of product contamination or failure.

gelbo flextester
Gelbo Flex-tester

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Flexduurzaamheidstester

A Flexduurzaamheidstester is a specialized instrument designed to perform ASTM F392 tests efficiently and accurately. It features:

  • Rotating mandrels that create controlled twisting and compression.

  • Adjustable flexing conditions to simulate different stress levels.

  • Precision monitoring for assessing barrier integrity post-testing.

“Using an advanced flex durability tester, such as those manufactured by Gelbotest.com, ensures consistent and reliable results when evaluating flexible packaging materials.”

ASTM F392 - Gelbo Flex Test Method

ASTM F392 is an essential test for evaluating the flexibele duurzaamheid of packaging films. Utilizing the Gelbo Flex Test and a flex duurzaamheidstester, companies can optimize their packaging materials for real-world conditions. Gelbotest.com offers state-of-the-art testing solutions to help businesses achieve superior packaging performance.
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