VIT 112 – AATCC Wrinkle Recovery Tester

Testing Method

Why is Wrinkle Recovery Testing Important for Fabrics?
Wrinkle formation in fabrics occurs during wearing and storing due to external forces like folding, shearing, compression, bending, and washing. Once the external force is removed, the fabric often does not return to its original state. Wrinkling not only negatively impacts the appearance but also accelerates wear and tear along the wrinkle lines, leading to premature fabric damage. Therefore, wrinkle recovery is a critical factor in assessing fabric durability.

Test Principle
The fabric wrinkle recovery tester measures the ability of fabric samples to recover from wrinkles after being subjected to a specific load for a predetermined time. Under standard atmospheric conditions, pressure is applied to the fabric using the designated wrinkle device, and the sample undergoes uniform deformation. Afterward, the sample’s recovery is compared with a standard sample for evaluation.

Sample Preparation

• Cut three fabric samples, each measuring 150mm x 280mm, with the warp or wale direction running along the length.
• Condition the samples for at least 8 hours at 21±1℃ and 65±2% humidity.

Testing Procedure

1. Perform all tests in an environment set at 21±1℃ and 65±2% humidity.
2. Lift the top flange of the tester and secure it in place with a lock pin.
3. Attach one long edge of the pre-conditioned sample to the top flange, ensuring the fabric face is on the outside, and secure it using Velcro strips.
4. Wrap the other edge of the sample around the flange and secure it with the second Velcro strip, forming a “closed tube” of fabric.
5. Ensure the bottom edge of the sample lies flat and smooth between the top and bottom flanges.
6. Release the lock pin and gently lower the top flange until it rests in place.
7. Immediately apply a total weight of 3500 grams (three weights) to the top flange and start the timer.
8. After 20 minutes, remove the weights and carefully lift the top flange without disturbing the fabric’s wrinkled state.
9. Attach the short edge of the sample to a clip and hang it so that the fabric’s length runs perpendicular to the ground.
10. After 24 hours in the controlled atmosphere, remove the sample and rate it.