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 | ... | <......
ASTM D3691-02(2008) history
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