ASTM D5431-08

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1.1 This specification covers the evaluation of specific performance characteristics of importance in woven and knit flat, fitted, and waterbed sheet products for use in institutional and household environments.

1.2 This specification may be used by mutual agreement between the purchaser and the supplier to establish purchasing specification requirements.

1.3 The requirements in Table 1 apply to the length and width directions for those properties where fabric direction is pertinent.

1.4 This specification is not applicable to woven and knit products used for sheet blankets or to woven and knitted sheet products used for apparel.

1.5 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.

TABLE 1 Specification Requirements

Characteristics			Requirements
			Woven
			Non-flannel		Flannel	Knitted	Section
			Polyester/Cotton	100 % Cotton	Flannel	Flannel/Non-flannel	Section
Breaking Force							7.1
	CRT Method Each Direction^A		222 N (50 lbf) min	178 N (40 lbf) min	156 N (35 lbf) min
Bursting Force^A						222 N (50 lbf) min	7.1.2
Tear Resistance, Elmendorf^A							7.1.3
	Each Direction		7 N (1.5 lbf) min	7 N (1.5 lbf) min	7 N (1.5 lbf) min
Pilling			4.0	NA	NA	4.0	7.1.4
Dimensional Change:							7.1.5
	Durable Press (In Each Direction)		5 % max	5 % max	3.5 % max	4 % max
	Nondurable Press (Nonpreshrunk)
		Length	8 % max	8 % max	8 % max
		Width	6 % max	6 % max	6 % max
	Preshrunk (In Each Direction)		2 % max	3 % max	3.5 % max
Laundered Appearance			Acceptable	Acceptable	Acceptable	Acceptable	7.2.1
Fabric Appearance			SA 3.0 min	SA 2.2 min^B	NA	SA 3.0 min	7.1.6
Bow and Skewness			3 % max	3 % max	3 % max	3 % max	7.1.7
Colorfastness To:^C
	Laundering:						7.1.8.1
		Alteration in Shade	Class 4 min^D	Class 4 min^D	Class 4 min^D	Class 4 min^D
		Staining	Class 3 min^E	Class 3 min^E	Class 3 min^E	Class 3 min^E
Crocking:							7.1.8.2
	Dry		Class 4 min^F	Class 4 min^F	Class 4 min^F	Class 4 min^F
	Wet		Class 3 min^F	Class 3 min^F	Class 3 min^F	Class 3 min^F
Light (20 AATCC FU),							7.1.8.3
	Xenon-Arc^E		Step 4 min^D	Step 4 min^D	Step 4 min^D	Step 4 min^D
Perspiration							7.1.8.4
	Alteration In Shade		Class 4 min^D	Class 4 min^D	Class 4 min^D	Class 4 min^D
	Staining		Class 3 min^E	Class 3 min^E	Class 3 min^E	Class 3 min^E
Flammability			Class I	Class I	Class I	Class I	7.1.9

^A There is more than one standard method that can be used to measure breaking force, bursting force, tear resistance, and lightfastness. These methods cannot be used interchangeably since there may be no overall correlation between them. See Notes 2-5 and Note 8.

^B Recommended requirement for Easy Care Products which must be ironed.

^C Class in colorfastness and 5A 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.

^D AATCC Gray Scale for Color Change.

^E AATCC Gray Scale for Staining.

^F AATCC Chromatic Transference Scale.

Product Details

Published:: 08/01/2008
Number of Pages:: 4
File Size:: 1 file , 86 KB
Redline File Size:: 2 files , 160 KB

Product Details

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