SATRA TM77 - Whole Shoe Flex Test for Water Penetration Resistance

SATRA TM77 specifies a method to evaluate the water penetration resistance of finished footwear under repeated flexing. This test is particularly useful for assessing the waterproof performance of shoes during natural flexing movements.

Scope:

Testing Methodology:

  • The shoe is placed in a tray filled with water up to 5 mm above the sole line.

  • The sample undergoes repeated flexing along its natural flex line at a specified angle and speed.

  • After a set duration or number of flex cycles, the shoe is inspected for water penetration signs.

Applicable Footwear:

  • Suitable for most types of shoes, particularly those marketed as waterproof or water-resistant.

Assessment Parameters:

  • Determines the shoe’s ability to resist water ingress during flexing.

  • Assesses the durability of seams and materials under dynamic conditions.

Applications:

Quality Control:

  • Ensures that footwear meets waterproofing standards before reaching consumers.

Product Development:

  • Assists manufacturers in evaluating and improving material and design choices for better water resistance.

Performance Testing:

  • Simulates real-world conditions to confirm the shoe’s suitability for wet environments.

Consumer Assurance:

  • Validates claims of waterproofing, ensuring customer satisfaction and product reliability.

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