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 directionsA | ... | 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 directionsA | ... | 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 4C min Class 3D min | Class 4C min Class 3D min | Class 4C min Class 3D min | 5.6.1 | |||
Colorfastness to dry cleaning: | |||||||
Shade change | Class 4C min | Class 4C min | Class 4C min | 5.6.2 | |||
Burnt gas fumes, 2 cycles: | |||||||
Shade change After 1 refurbishing | Class 4C min Class 4C min | Class 4C min Class 4C min | Class 4C min Class 4C min | 5.6.3 | |||
Crocking: | |||||||
Dry Wet | Class 4E min Class 3E min | Class 4E min Class 3E min | Class 4E min Class 3E min | 5.6.4 | |||
Light (60 AATCC FU), xenonA | Step 4C min | Step 4C min | Step 4C min | 5.6.5 | |||
Ozone, 1 cycle | Class 4C min | Class 4C min | Class 4C min | 5.6.6 | |||
Fabric appearance | SA 3.5F 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 degradationG | ... | ... | ... | 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.
Область применения1.1 This performance specification covers the requirements for all knit, lace, foam back, stitch-bonded, conventional weights, and sheer woven fabrics to be used in the manufacture of curtains and draperies.
1.2 This performance specification is applicable to all fabrics except those made of glass.
1.3 For those properties where fabric direction is pertinent, these requirements apply to the length and width directions for woven fabric and to both the wale and course directions for knit fabric.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.