AATCC 128:2017 pdf download.Wrinkle Recovery of Fabrics: Appearance Method
1. Purpose and Scope
1.1 This test method is for determining the appearance of textile fabrics after induced wrinkling. It is applicable to fabrics made from any fiber or combination of fibers.
1.2 The method can be used to evaluate fabrics at their original, unwashed state or after home laundering.
2. Principle
2.1 A test specimen is wrinkled under standard atmospheric conditions in a standard wrinkling device tinder a predetermined load for a prescribed period of time. The specimen is then reconditioned in the standard atmosphere for textile testing and evaluated for appearance by comparison with 3-dimensional reference standards.
3. Terminology
3.1 smoothness appearance, n.—in /ithrics, the visual impression of planarity of a specimen quantified by comparison with a set of reference standards.
3.2 wrinkle recovery, n.—that property of a fabric which enables it to recover from folding deformations.
4. Safety Precautions
NOTE: These safety precautions arc fbr information purposes only. The precautions are ancillary to the testing procedures and arc not intended to be all inclusive. It is the user’s responsibility to use safe and proper techniques in handling materials in this test method. Manufacturers MUST be consulted for specific details such as material safety data sheets and other manufacturer’s recommendations. All OSHA standards and rules must also be consulted and followed.
4.1 Good laboratory practices should be followed. Wear safety glasses in all laboratory areas.
8.3 The observer is to stand directly in front of the specimen 4 ft away from the board. It has been found that normal variations in the height of the observer above and below the arbitrary 5-ft eye level have no significant effect on the rating given.
8.4 Assign the number of the replica which most nearly matches the appearance of the test specimens.
8.4.1 A No. 5 rating is equivalent to the WR-5 Replica and represents the smoothest appearance and best retention of original appearance, while a No. 1 rating is equivalent to the WR-I Replica and represents the poorest appearance and poorest retention of original appearance (see Table 1).
8.5 Similarly, the observer independently rates each of the other two test specimens. The other two observers proceed in the same manner assigning ratings independently.AATCC 128 pdf download.