AATCC 135:2004 pdf download.Dimensional Changes of Fabrics after Home Laundering
7.2.4 Add test specimens and ballast to machine. Set the washer for the selected washing cycle and time (see Tables 1 and 11).
7.2.5 For specimens to be dried by procedures A, B or D. allow washing to proceed through the final spin cycle. Remove the test specimens immediately after the final spin cycle, separate tangled pieces, taking care to niinimizc distorhon. and dry by procedure A, B or D (see Tables I and III).
7.2.6 For specimens to be dried by procedure C. Drip Dry, allow washing to proceed through to the final rinse cycle. Remove the specimens from the washer just before the water begins to drain for the final rinse cycle. Remove specimens soaking wet.
7.3 Drying.
7.3.1 For drying procedures B. C and ft do not blow air directly on specimens as it may cause fihric distortion.
7.3.2 (A) Tumble I)ry. Place the washed load (test specimens and ballast) in the tumble dryer. and set the temperature control to generate the correct exhaust temperatures as specified in Table
lii. For fibers that are heat sensitive. lower temperatures consistent with producer’s care recommendations should be used and reported. Allow the dryer to operate until the total load is dry. Remove the load immediately after the dryer stops.
7.3.3 (B) Line Dry. hang each specimen by two corners with the tihric length in the vertical direction. Allow the test specimen to hang in still air at rxm temperature not greater than 26°C (78°F) until dry.
6.3.2 Dimensional change results may not he comparable when different specimen sizes, different benchmark lengths, different number of specimens, or different number of benchmarks are used.
6.3.3 To improve the accuracy and precision of the dimensional change calculaLions based on the benchmarks applied to the fabrics as instructed in 6.2, measure and record the distance between each pair of benchmarks with suitable tape or rule to nearest millimeter. eight or tenth of an inch. This is measurement A. In case of narrow fabrics less than 380 mm (15 in.) wide, measure and record width if width measurement will be used. If using a calibrated template for marking and measuring in percent dimensional change directly, an initial measurement is not needed.AATCC 135 pdf download.