AATCC 117:2019 pdf download.Test Method for Colorfastness to Heat: Dry (Excluding Pressing)
1. Purpose and Scope
1.1 This test method is intended for assessing the degree of color change and staining caused by the action of dry heat. excluding pressing.
1.2 It is applicable to textiles of all kinds and in all forms.
2. Principle
2.1 A specimen in contact with undyed fabrics is exposed to dry heat by close contact under control led conditions. Color change of the test specimen is reported as a grade from 5 to 1. with 5 representing no color change and I representing the most color change. Staining on each undyed fabric or fiber is reported as a grade from 5 to 1, with 5 representing no staining and 1 representing the most staining.
5. Safety Precautions
NOTE: These safety precautions are for infoniiation purposes only. The precautions are ancillary to the testing procedures and are 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. Users MUST consult manufacturers for specific details such as safety data sheets and other manu fácturer s recommendations. Consult and follow all applicable OSHA standards and rules.
5.1 Follow good laboratory practices. Wear safety glasses in all laboratory areas.
6. Uses and Limitations
6.1 When this test method is used for assessing color changes and staining in dyeing. printing and finishing processes. other chemicals and physical factors may influence the results.
6.2 A color change of the undyed flub- nc may be caused by factors other than staining from the test specimen. To determine this, pieces of the undyed fabric may be tested alone.
8. Specimens
8.1 If the textile to be tested is fabric, place a test specimen with dimensions appropriate for the heating device between the two pieces of undyed fabric (see 7.2), and sew along one of the shorter sides to form a composite test specimen.
8.2 If the textile to be tested is yarn. knit it into fabric and treat it as in 8.1 or form a uniform layer of parallel yarn lengths between two pieces of undycd fabric (see 7.2), the amount of yarn taken being approximately equal to half the combined mass of the undyed fabrics. Sew along one side to hold the yarn in place and to form a composite test specimen.
8.3 If the textile to be tested is loose fiber, comb and compress an amount approximately equal to half the combined mass of the undyed fabrics (see 7.2) into a uniform sheet of the required size. Place the sheet between the two undyed fabrics and sew along all four sides to form a composite test specimen.AATCC 117 pdf download.