A-A-52095B
TABLE I. Physical Characteristics
Tex 1/ (sizes) |
Breaking strength, lbs (min) |
Elongation, % (max) |
18 |
1.4 |
35 |
24 |
1.9 |
35 |
35 |
2.5 |
35 |
45 |
3.2 |
35 |
50 |
3.9 |
35 |
70 |
5.8 |
35 |
105 |
6.9 |
35 |
1/ Tex size based on weight in grams / 1,000 meters thread.
3.2 Physical Requirements: The thread shall conform to the requirements in Table II.
TABLE II. Physical requirements
Characteristic |
Requirement |
Test method |
Fiber Identification Twist per inch Tex (Ticket) Size Breaking Strength Elongation |
Polyester 1.5 (min.) See Table I See Table I 35% (max) |
ASTM D 276 or AATCC 20 ASTM D 204 ASTM D 3823 ASTM D 2256 1/ 2/ ASTM D-2256 1/ 2/ |
Colorfastness: Crocking Laundering (after 3 cycles) Wet dry-cleaning |
3.5 (min.) 3-4 (min.) 3-4 (min.) |
See 3.4 AATCC-8 3/ AATCC-61 Test 3A 4/ 5/ AATCC-132 3/ 6/ |
1/ Testing speed shall be 12 ± 5.0 in./min., and a 10 inch gauge length shall be used.
2/ Five determinations per sample unit.
3/ AATCC Evaluation Procedure 8, AATCC 9- Step Chromatic Transference Scale
4/ AATCC Evaluation Procedure 1, Gray Scale for Color Change
5/ 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.
6/ AATCC Evaluation Procedure 2, Gray Scale for Staining
3.3 Color. The color shall be as specified in the applicable end item specification or in the contract order. The dyed thread shall be a good match to the applicable approved shade standard when examined in accordance with paragraph 3.5.
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.
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