A-A-50199A
1/ In case of dispute, the length per pound of thread may be determined on the thread after removal of finish. ( yards/lb = 453.6 x # of yards in specimen)
wgt of specimen in gm
2/ Five determinations shall be made on the sample unit.
3/ AATCC Evaluation Procedure 1, Gray Scale for Color Change (see 3.7, 3.7.1)
4/ The color transfer cloth evaluation shall not apply. No appreciable change in shade or loss of color of the tested specimen shall be visible when compared to the untested thread.
5/ AATCC Evaluation Procedure 2, Gray Scale for Staining
3.2 Color. The color shall be as specified in the applicable end item specification or in the contract order. The dyed thread shall conform to the applicable approved shade standard. The shade of the polyester core shall approximate that of the cotton or staple polyester covering.
3.3 Labile Sulfur. Use of dyes and compounds containing elementary sulfur capable of oxidation to sulfuric acid, is not permitted.
3.4 Finish removal procedure. Before evaluation for shade matching and testing for colorfastness, except for colorfastness to wet dry cleaning, the thread shall be wet dry cleaned in accordance with AATCC-132. Excess solvent shall be removed by centrifuging or wringing. The sample shall then be rinsed in distilled water at 120° to 160°F and dried at a temperature not exceeding 180°F. The dried sample shall then be conditioned for a minimum of 4 hours prior to evaluation for shade matching or colorfastness.
3.5 Visual shade matching. The color and appearance of the finished thread, after removal of finish (see 3.4), shall match the standard sample when viewed using AATCC Evaluation Procedure 9, Option A, with sources stimulating artificial daylight D75 illuminant with a color temperature of 7500 + 200 K, with illumination of 100 + 20 foot candles, and shall be a good match to the standard sample under incandescent lamplight at 2856 + 200 K.
3.6 Finishing materials. The finished thread shall have no chemical finishes or treatments other than those commonly used, i.e. water-repellent, etc, on commercial threads which have been demonstrated to have no deleterious effects on the polyester fiber, including effects of prolonged storage. There shall be no noticeable wicking of any treatment to adjacent material when sewn. No finish or treatment shall be applied for the purpose of increasing breaking strength.
3.7 Non-wicking Finish. When specified, the thread shall be finished with a non-wicking finish uniformly applied. The finished thread shall resist the wicking of water when tested as specified
3.7.1.
3.7.1 Vertical Resistance to wicking: The thread shall be water repellent treated so that the treated thread shall resist the wicking of water for a period of not less than 2 hours when tested as follows: The test specimen shall consist of a 20 strand skein of thread in one continuous 30 yard length made on a 54 inch periphery skein reel. The skein shall be reeled under enough tension to cause the strands in the skein to lie uniformly, side by side, on the reel. The finishing end of the skein shall be tied to the starting end o f the skein in such a manner that the knot will
not add additional length to the reel skein. The skein shall be hung over the movable crossbar of
3
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business