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    Bending flexural test | tec-science
    Vamp material flexural testing determines the resistance of footwear upper materials (leather, textiles, synthetics) to cracking and creasing, simulating walking conditions, typically using a SATRA TM25 or similar vamp flexing tester. Samples are folded into a V-shape, clamped, and subjected to thousands of cycles at, for example, 300 cycles/min. 
    Key Aspects of the Vamp Flex Test 
    • Purpose: Evaluates the propensity of materials to crack or fail at flexing creases, especially on the vamp (front) part of the shoe, and tests for salt spue.
    • Methodology: A square specimen (approx.
      64
      mm
      ×64
      mm
      ) is folded over two inverted V-shaped clamps. As the clamps oscillate closer together, the specimen creates one downward crease surrounded by four upward creases.
    • Conditions: Tests are conducted on wet or dry specimens at room temperature, or sometimes at sub-zero temperatures (e.g., using a GT-KC04B tester down to
      -40∘Cnegative 40 raised to the composed with power cap C
      −40∘𝐶
      ).
    • Key Standards:
      • SATRA TM25: Standard method.
      • ISO 4643: Often used for PVC leather.
      • EN ISO 22288: Determines flex resistance.
      • GB/T 20991: Similar standard for protective footwear.
    • Evaluation: After a set number of flexes, the sample is examined for surface damage, cracking, or deterioration. 
    Common Testers 
    • SATRA TM25 Vamp Flexing Tester: Industry standard.
    • GESTER Leather Vamp Flex Tester (GT-KC04A): Simulates walking and assesses creasing resistance.
    • Amade-Tech Upper Material Flexing Resistance Tester: Features multiple stations (up to 12) for high-volume testing. 
    • Leather Vamp flex Tester GT-KC04A - GESTER Instruments
      Introducing our Vamp flex Tester, designed to meet the evolving needs of the footwear industry. This testing machine is specifical...
      gester international co.,ltd
    • SATRA TM 25 Vamp Flexing Tester
      Test Principle. The sample is fixed on the fixture, and the fixture moves relative to each other. When the two fixtures are close,
      www.lab-testequipment.com
    • Vamp flex test - resistance to creasing and cracking - SATRA
      This method is primarily intended to determine the propensity for materials to crack or otherwise fail at flexing creases, but can...
      SATRA
    • Vamp Material Cold Flex Tester GT-KC04B | PDF | Shoe - Scribd
      This document summarizes an upper and vamp material cold flexing tester. The tester is used to determine if materials will crack o...
      Scribd
    • Upper Material Flexing Resistance Tester - Amade-Tech
      EN ISO 22288 Physical and mechanical tests-determination of flex resistance by the vamp flex method. SATRA TM25 Vamp flex test-res...
      Amade-Tech
    • Vamp Material Flexing Tester H049A - utstester
      H049A Upper and Vamp Material Flexing Tester is to determine flexing resistance or physical damage for all of vamp soft materials ...
      UTS International Co., Ltd
    • Leather Vamp flex Tester - qinsun-lab
      The Leather Vamp Flex Tester is designed to evaluate the propensity of footwear upper materials—especially vamps—to crack, crease,
      Qinsun Instruments
    • Some knowledge about Vamp material flexing tester - utstester
      ... Textiles Testing equipment · Flammability test · tensile test myanmar · Ici pilling box. Some knowledge about Vamp Material Fl...
      www.utstesters.com
    • Leather Vamp flex Tester GT-KC04A - GESTER Instruments
      Introducing our Vamp flex Tester, designed to meet the evolving needs of the footwear industry. This testing machine is specifical...
      gester international co.,ltd
    • SATRA TM 25 Vamp Flexing Tester
      Test Principle. The sample is fixed on the fixture, and the fixture moves relative to each other. When the two fixtures are close,
      www.lab-testequipment.com
    • Vamp flex test - resistance to creasing and cracking - SATRA
      This method is primarily intended to determine the propensity for materials to crack or otherwise fail at flexing creases, but can...
      SATRA
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    Vamp flex test - resistance to creasing and cracking


    SATRA
    https://www.satra.com › test_methods › detail
    SATRA
    https://www.satra.com › test_methods › detail
    This method is primarily intended to determine the propensity for materials to crack or otherwise fail at flexing creases, but can also be used to assess ...Read more
    Videos
    VAMP FLEX TESTER | ASIAN VAMP FLEX TESTER | UPPER ...
    YouTube · Asian Test Equipments
    Mar 12, 2024
    YouTube · Asian Test Equipments
    2:39
    Asian Test Equipments
    YouTube·
    Mar 13, 2024

    VAMP FLEX TESTER | ASIAN VAMP FLEX TESTER | UPPER ...

    YouTube·Asian Test Equipments·Mar 13, 2024
    YouTube
    Upper and Vamp Material Flexing Tester GT-KC04A
    YouTube · Gester Instruments
    May 4, 2017
    YouTube · Gester Instruments
    0:21
    Gester Instruments
    YouTube·
    May 5, 2017

    Upper and Vamp Material Flexing Tester GT-KC04A

    YouTube·Gester Instruments·May 5, 2017
    YouTube
    Ever seen a leather flex test in action? Look inside our lab at ...
    Instagram · Packer Leather
    Jun 5, 2025
    Instagram · Packer Leather
    0:14
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    Web results

    SATRA TM 25 Vamp Flexing Tester


    lab-testequipment.com
    https://www.lab-testequipment.com › SATRA-TM-25-Va...
    lab-testequipment.com
    https://www.lab-testequipment.com › SATRA-TM-25-Va...
    During the test, the fixture moves at a uniform speed, and the sample repeatedly bends. Observe the damage of the sample.Read more

    Upper Material Flexing Resistance Tester


    Amade-Tech
    https://www.amade-tech.com › product › upper-materia...
    Amade-Tech
    https://www.amade-tech.com › product › upper-materia...
    Upper Material Flexing Resistance Tester is designed to simulate squeezing, stretching, creasing and bending applied to the different positions of upper of ...Read more

    Some knowledge about Vamp material flexing tester


    utstester
    https://www.utstesters.com › blog › some-knowledge-a...
    utstester
    https://www.utstesters.com › blog › some-knowledge-a...
    Jun 10, 2019 — Cut out 6 test pieces with a knife mold. Test steps. 1. Put the precut specimen into the fixture in the shape of inverted V and then tighten it.Read more
    Missing: flexural ‎| Show results with: flexural

    Upper and Vamp Material Flexing Tester AF16


    aveno technology co., limited
    https://www.avenotester.com › upper-and-vamp-material...
    aveno technology co., limited
    https://www.avenotester.com › upper-and-vamp-material...
    Upper and Vamp Material Flexing Tester is designed for determining the flexing resistance or physical damage of all shoe vamps, and soft materials. The specimen ...Read more
    Missing: flexural ‎| Show results with: flexural

    Upper and Vamp Material Cold Flexing Tester GT-KC04B


    gester international co.,ltd
    https://www.gester-instruments.com › upper-and-vamp-...
    gester international co.,ltd
    https://www.gester-instruments.com › upper-and-vamp-...
    This Upper and Vamp Material Cold Flexing Tester is used to determine the propensity for materials to crack or otherwise fail at flexing creases.Read more

    Vamp Material Cold Flex Tester GT-KC04B | PDF


    Scribd
    https://www.scribd.com › document › GT-KC04B-Upp...
    Scribd
    https://www.scribd.com › document › GT-KC04B-Upp...
    The tester is used to determine if materials will crack or fail under flexing when exposed to low temperatures, simulating conditions footwear faces during ...Read more

    Vamp Tech


    Instron
    https://www.instron.com › Resources › Case Studies
    Instron
    https://www.instron.com › Resources › Case Studies
    Compression Testing · Compression testing. Used to determine a material's behavior under applied crushing loads. Bend and Flexural Testing · Bend and flexural ...Read more
    Images
    Find Upper and Vamp Material Cold Flexing Tester GT-KC04B ...
    Find Upper and Vamp Material Cold Flexing Tester GT-KC04B ...
    GESTER Instruments
    Flexural Testing: Key for Material Strength Evaluation
    Flexural Testing: Key for Material Strength Evaluation
    Biopdi
    Bending flexural test | tec-science
    Bending flexural test | tec-science
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