Значение и использование

Fabrics intended for this end-use should meet all the requirements listed in Table 1.

It should be recognized that fabric can be produced utilizing an almost infinite number of combinations 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 methods.

TABLE 1 Performance Requirements

PropertyRequirementsSection Grade A Grade B Grade C Breaking strength (load) (CRT Method):^A 6.1 Length
Width244 N (55 lbf), min
244 N (55 lbf), min222 N (50 lbf), min
222 N (50 lbf), min200 N (45 lbf), min
178 N (40 lbf), min Tongue tear strength (CRT Method)^A 6.2 Length
Width27 N (6 lbf), min
22 N (5 lbf), min18 N (4 lbf), min
13 N (3 lbf), min13 N (3 lbf), min
9 N (2 lbf), min Tack-tear resistance: 6.3 Length
Width133 N (30 lbf), min
133 N (30 lbf), min111 N (25 lbf), min
89 N (20 lbf), min67 N (15 lbf), min
67 N (15 lbf), min Adhesion of coating to substrate525 N/m (3.0 lbf/in.),
min525 N/m (3.0 lbf/in.),
min525 N/m (3.0 lbf/in.),
min 6.4 Surface abrasionno appreciable color change at 200 cycles, grade A, B, and C 6.5 Resistance to flexingno cracking or delamination at 15 000 cycles, grade A, B, and C 6.6 Blocking at elevated temperaturerating 2, min, no blocking; coating adheres slightly,grade A, B, and C 6.7 Resistance to cracking at low temperatureno cracking at − 10± 1°F (−23 ± 1°C), grade A, B, and C 6.8 Colorfastness to crocking:^B 6.9.1 Dry
Wetgrade 4.0 min^C
grade 4.0 min^Cgrade 4.0 min^C
grade 4.0 min^Cgrade 4.0 min^C
grade 4.0 min^C Colorfastness to light (xenon)^A (120 AATCC fading
units)Step 4 min^D Step 4 min^DStep 4 min^D 6.9.2 Loss of plasticizer10 % max10 % max10 % max 6.10 Hydrolytic stability: 6.11 Adhesionmust maintain 75 % of original strength, grade A, B, and C 6.11.3.1 Surface abrasionno cracking or delamination at 25 000 cycles, grade A, B, and C 6.11.3.2 Resistance to flexingno breaks in coating at 15 000 cycles, grade A, B, and C 6.11.3.3 Flammabilitypasspasspass 6.12

^A There is more than one standard test method that can be used to measure breaking strength, tongue tear strength, and lightfastness. These test methods cannot be used interchangeably since there may be no overall correlation between them (see Note 2).

^B grade in b and c is based on a numerical scale of 5 for negligible color transfer or color change to 1 for very severe color transfer or color change. The numerical rating in Table 1 or higher is acceptable.

^C AATCC 8–step Chromatic Transference Scale.

^D AATCC Gray Scale for Color Change.

Область применения

1.1 This performance specification covers performance requirements for vinyl-coated and urethane-coated upholstery fabrics produced with woven, knit, or nonwoven substrates which are used in the manufacture of new indoor furniture.

1.2 This performance specification is not applicable to fabrics used in porch, deck, or lawn furniture; nor for plain knit fabrics and plain, tufted, or flocked, woven upholstery fabrics.

1.3 These requirements apply to the length and width directions for those properties where fabric direction is pertinent.

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.