New water-resistance test method for footwear

15 May 2013

The new TM444 test method and test machine STM 640 can evaluate resistance to non-flex induced water penetration in all footwear products in just over ten minutes, and without causing damage to the materials or product.
This makes TM444 ideal for production testing and sets it apart from existing water-resistance test methods which can be relatively time consuming and cause damage and fatigue to the footwear being assessed.

For manufacturers and suppliers of footwear claiming to offer water resistance, it is vital to have these claims assessed before placing the product on the market. SATRA's TM444 and STM 640 will help them validate these claims.
The TM444 test is based on a centrifuge principle. A sample of footwear is weighed and securely placed in a container which is then filled with water to a known depth. The container is attached to a vertical shaft within the centrifuge and spun rapidly so that the water exerts pressure on the outside of the footwear. At the end of the test, the footwear is inspected and reweighed to determine the level of water penetration.

For many years, SATRA has been at the forefront of developing highly water-resistant materials and footwear for a variety of applications, including outdoor wear and military use.

Commenting on the new test method and machine, SATRA's head of research, Tom Bayes, says: "SATRA has a long history of developing footwear and ways to test and improve its strength, durability, appearance, safety and comfort. The new TM444 and STM 630 have come about through our commitment to research and innovation, with the ultimate aim being to help our members develop the best possible products in the shortest possible time."

SATRA's new test method and machine will allow manufacturers to test a high level of production samples quickly to confirm the water-resistant properties are consistent as intended."

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