Vamp Flexing Machine

Application

This machine is used to test vamp flex test-resistance to creasing and cracking

Product information

To primarily intended to determine the propensity for materials to crack or be used to assess whether leathers are likely to produce salt spue. In particular the test simulates conditions in the vamp part of footwear during walking. The test can be conducted with either wet or dry specimens at room temperature or with dry specimens at sub zero temperatures. The method is applicable to all flexible materials and in particular those used to manufacture outers and linings of footwear uppers such as leathers, coated fabrics and textiles

Principle

The sample is fixed on the fixture, and the clamp moves relative to each other, so that when the two clamps are close, the specimen is bent. During the test, the clamp moves at a constant speed, and the specimen is repeatedly bent. Observe the damage of the specimen.

Technical parameters

Standards

ISO 4643

ISO 5423 section 5.2

EN ISO 20344-2004 Section 6.5.2

AS/NZS 2210.2 Section 6.5.2

EN ISO 22288

SATRA TM25

Please review the video of the Vamp Flexing Tester operation as below link:

https://youtu.be/Co-7YpdPshI

What is the flexing test?

A Flex test is an SSAT given on a day other than the six Standard test dates, usually with a member school or educational consultant. Flex tests can be taken 2 times per year for Middle/Upper Levels and up to 1 time per year for Elementary. Flex tests may be given by member schools or approved educational consultants