Fabrics intended for this end-use should meet all of the requirements listed in Table 1.
It should be recognized that fabric can be produced utilizing an almost infinite number of construction variables (e.g., type of fibers, percentage of fibers, yarn twist, yarn number, warp and pick count, chemical and mechanical finished). Additionally, fashion and aesthetics dictate that the ultimate consumer may find acceptable articles made from fabrics that do not conform to all of the requirements in Table 1.
Hence, no single performance specification can possibly apply to all the various fabrics that could be utilized for this end-use.
The uses and significance of particular properties and test methods are discussed in the appropriate sections of the specified test methods.
TABLE 1 Performance Requirements
| Characteristics | Knit and Lace | Sheer (woven) | Foam Back, Stitch Bonded, and
Conventional Weights (woven) | Section |
Breaking strength (load), (CRT method), in
both directions
A | ... | 67 N (15 lbf), min | | 89 N (20 lbf), min | | 5.1 |
| Bursting strength (ball burst)
A | 138 kPa (20 lbf/in.
2),
min | ... | | ... | | 5.2 |
Tear strength (tongue tear), in both
directions
A | ... | 4.4 N (1 lbf), min | | 6.7 N (1.5 lbf), min | | 5.3 |
| Dimensional change: | | | | | | |
| After 5 launderings in both directions | 3.0 % max +0.0% | 3.0 % max 0.0% | | 3.0 % max +0.0% | | 5.4.1 |
| After 3 dry cleanings in both directions | 3.0 % max +0.0% | 3.0 % max +0.0% | | 3.0 % max +0.0 % | | 5.4.2 |
| Distortion of yarn: | | | | | | |
| 1-lbf load | ... | 2.54 mm (0.1 in.),
max | | ... | | 5.5 |
| 2-lbf load | ... | ... | | 2.54 mm (0.1 in.),
max | | |
| Colorfastness to laundering:
B | | | | | | |
| Shade Change
Staining | Class 4
C min
Class 3D min | Class 4
C min
Class 3D min | | Class 4
C min
Class 3D min | | 5.6.1 |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| Colorfastness to dry cleaning: | | | | | | |
| Shade change | Class 4
C min | Class 4
C min | | Class 4
C min | | 5.6.2 |
| Burnt gas fumes, 2 cycles: | | | | | | |
| Shade change
After 1 refurbishing | Class 4
C min
Class 4C min | Class 4
C min
Class 4C min | | Class 4
C min
Class 4C min | | 5.6.3 |
| Crocking: | | | | | | |
| Dry
Wet | Class 4
E min
Class 3E min | Class 4
E min
Class 3E min | | Class 4
E min
Class 3E min | | 5.6.4 |
| Light (60 AATCC FU), xenon
A | Step 4
C min | Step 4
C min | | Step 4
C min | | 5.6.5 |
| Ozone, 1 cycle | Class 4
C min | Class 4
C min | | Class 4
C min | | 5.6.6 |
| Fabric appearance | SA 3.5
F min | SA 3.0 min | | SA 3.5 min | | 5.7 |
Retention of hand, character, and
appearance | No significant change | No significant change | | No significant change | | 5.8 |
| Durability of back coating | No significant change | No significant change | | No significant change | | 5.9 |
| Flammability | pass | pass | | pass | | 5.10 |
| Light degradation
G | ... | ... | | ... | | 5.11 |
A There is more than one standard test method that can be used to measure breaking strength, bursting strength, tear strength, and lightfastness. These test methods cannot be used interchangeably since there may be no overall correlation between them (see Note 2, Note 3, Note 4, Note 5, and Note 9).
B Class in colorfastness and SA rating is based on a numerical scale of 5.0 for negligible color change, color transfer, or wrinkling to 1.0 for very severe color change, color transfer, or wrinkling. The numerical rating in Table 1 or higher is acceptable.
C AATCC Gray Scale for Color Change.
D AATCC Gray Scale for Staining.
E AATCC Chromatic Transference Scale.
F For durable-press fabrics only.
G The development of a standard method has been referred to the American Association of Textile Chemists and Colorists.
View Less