1、Designation: D7021 14Standard Performance Specification forBathrobe, Dressing Gown, Negligee, Nightgown, andPajama Fabrics1This standard is issued under the fixed designation D7021; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, t
2、he year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This performance specification covers fabrics used inbathrobes, dressing gowns, negligee, nightgown, and pa
3、jamas.1.2 These requirements apply to the length and widthdirections for those properties where each fabric direction ispertinent.1.3 The following safety hazards caveat pertains only to thetest methods described in this performance specification:Thisstandard does not purport to address all of the s
4、afety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices, and determine the applicability of regulatory limi-tations prior to use.2. Referenced Documents (See Note 1)2.1 ASTM Standards:2D123 Terminology R
5、elating to TextilesD434 Test Method for Resistance to Slippage of Yarns inWoven Fabrics Using a Standard Seam (Withdrawn2003)3D1336 Test Method for Distortion of Yarn in Woven FabricsD1424 Test Method for Tearing Strength of Fabrics byFalling-Pendulum (Elmendorf-Type) ApparatusD2261 Test Method for
6、Tearing Strength of Fabrics by theTongue (Single Rip) Procedure (Constant-Rate-of-Extension Tensile Testing Machine)D3786 Test Method for Bursting Strength of TextileFabricsDiaphragm Bursting Strength Tester MethodD3787 Test Method for Bursting Strength of TextilesConstant-Rate-of-Traverse (CRT) Bal
7、l Burst TestD5034 Test Method for Breaking Strength and Elongation ofTextile Fabrics (Grab Test)D7022 Terminology Relating to Apparel2.2 AATCC Test Methods:48 Colorfastness to Crocking: AATCC Crockmeter Method15 Colorfastness to Perspiration16 Colorfastness to Light23 Colorfastness to Burnt Gas Fume
8、s61 Colorfastness to Laundering, Home and Commercial:Accelerated116 Colorfastness to Crocking: Rotary Vertical CrockmeterMethod124 Smoothness Appearance of Fabrics after RepeatedHome Launderings132 Colorfastness to Drycleaning135 Dimensional Changes of Fabrics after Home Launder-ing158 Dimensional C
9、hanges on Drycleaning in Perchloroeth-ylene: Machine Method172 Colorfastness to Non-Chlorine Bleach in Home Laun-dering188 Colorfastness to Sodium Hypochlorite Bleach in HomeLaundering2.3 Federal Standards:516 CFR 1610 Standard for Flammability of Clothing Tex-tiles16 CFR 1615 Standard for the Flamm
10、ability of ChildrensSleepwear: Sizes 0 Through 6X16 CFR 1616 Standard for the Flammability of ChildrensSleepwear: Sizes 7 through 14NOTE 1Reference to test methods in this specification give only thepermanent part of the designation of ASTM, AATCC, or other testmethods. The current editions of each
11、test method cited shall prevail.3. Terminology3.1 For definitions of textile terms used in this specificationrefer to Terminologies D123 and D7022. For terms relating tochemical and colorfastness testing refer to specificAATCC testmethods.1This specification is under the jurisdiction of ASTM Committ
12、ee D13 onTextiles and is the direct responsibility of Subcommittee D13.61 on Apparel.Current edition approved Feb. 1, 2014. Published March 2014. Originallyapproved in 2005. Last previous edition approved in 2012 as D7021-05(2012). DOI:10.1520/D7021-14.2For referenced ASTM standards, visit the ASTM
13、website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from American
14、 Association of Textile Chemists and Colorists, P.O.Box 12215, Research Triangle Park, NC 27709.5Available from Superintendent of Documents, Government Printing Office,Washington, DC 20402.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United Stat
15、es13.2 Definitions found in a dictionary of common usage aresuitable for this specification.4. Significance and Use4.1 Fabrics intended for this end-use should meet all of therequirements listed in Table 1.4.2 It should be recognized that fabric can be producedutilizing an almost infinite number of
16、combination of construc-tion variables (e.g., type of fibers, percentage of fibers, yarntwist, yarn number, warp and pick count, chemical andmechanical finishes). Additionally, fashion or aesthetics dictatethat the ultimate consumer may find acceptable articles madefrom fabrics that do not conform t
17、o all of the requirements inTable 1.4.2.1 Hence, no single performance specification can possi-bly apply to all the various fabrics that could be utilized for thisend-use.4.3 The uses and significance of particular properties andtest methods are discussed in the appropriate sections of thespecified
18、test methods.5. Test Methods (See Note 1)5.1 Breaking Strength (woven fabrics only)Determine thebreaking force (load), as directed in the grab test procedure ofTest Method D5034 using a constant-rate-of-extension (CRE)tensile testing machine.NOTE 2If preferred a constant-rate-of-traverse (CRT) tensi
19、le testingmachine may be used. There may be no overall correlation between theresults obtained with the CRT machine and the CRE machine.Consequently, these two breaking force testers can not be used inter-changeably. In case of controversy, the CRE method, Test Method D5034,shall prevail.5.2 Tearing
20、 Strength (woven fabrics only)Determine thetearing resistance as directed in Test Method D1424.TABLE 1 Specification RequirementsCharacteristic Minimum Requirements SectionSheer Fabrics Non-Sheer FabricsBreaking strength (CRE)A67 N (15 lbf) 89 N (20 lbf) 5.1Tearing strength (CRE)A4.4N(1lbf) 6.7N(1.5
21、lbf) 5.2Yarn distortion:Satins 2.5 mm (0.1 in.), max at 4.4 N (1 lbf) loadAll other 1 mm (0.05 in.), max at 4.4 N (1 lbf) loadResistance to Yarn slippageA5.4(6 mm (14 in.) separation) 44 N (10 lbf) 67 N (15 lbf)Bursting strength, KnitA133 N (30 lbf) 222 N (50 lbf) 5.5Dimensional Change - WovenLaunde
22、ring 3 %, max 5.6.1Drycleaning 2 %, max 5.6.2Dimensional Change KnitLaundering 5 % max 5.6.1Drycleaning 5 % max 5.6.2Colorfastness:Laundering:B5.7.1Shade change Grade 4Staining Grade 3Drycleaning: 5.7.2Shade change Grade 4Sodium Hypochlorite Bleach 5.7.3Shade Change Grade 4Non-Chlorine Bleach 5.7.3S
23、hade Change Grade 4Burnt gas fumes2 cycles: 5.7.4Shade change, original fabric Grade 4Shade change, after one launderingor one drycleaningGrade 4Crocking:B5.7.5Dry Grade 4Wet Grade 3Perspiration:B5.7.6Shade change Grade 4Staining Grade 3Light (10 AFU) (xenon-arc) Grade 4 5.7.7Fabric appearance SA 3.
24、5 5.8Flammability 5.916 CFR 1610 Class I16 CFR 1615, 1616 PassAThere is more than one method that can be used to measure breaking strength, tearing strength, bursting strength, and lightfastness. These methods cannot be usedinterchangeably since there may be no overall correlation between them (see
25、Note 2, Note 3, Note 4, and Note 5).BSee Note 6.D7021 142NOTE 3If preferred, use of Test Method D2261 is permitted withexisting requirements as given in this standard. There may be no overallcorrelation between the results obtained with the Elmendorf machine (TestMethod D1424) and with the tongue te
26、ar method (Test Method D2261).Consequently, these testers cannot be used interchangeably. In case ofcontroversy, Test Method D1424 shall prevail.5.3 Yarn Distortion (woven fabric only)Determine theyarn distortion as directed in Test Method D1336.5.4 Resistance to Yarn Slippage (woven fabrics only)De
27、termine the resistance to yarn slippage as directed in TestMethod D434.5.5 Bursting Strength (knit fabrics only)Determine thebursting strength of knit fabrics as directed in Test MethodD3786.NOTE 4If preferred, a consant-rate-of-extension (CRE) tensile testingmachine may be used. Since there is no o
28、verall correlation between theresults obtained with the CRE machine equipped with a bursting attach-ment (Test Method D3787) and the diaphragm bursting tester (TestMethod D3786), these two bursting testers cannot be used interchange-ably. In case of controversy, the diaphragm bursting tester method
29、(TestMethod D3786) shall prevail.5.6 Dimensional Change:5.6.1 LaunderingDetermine the dimensional change afterlaunderings as directed in the applicable procedure in AATCCMethod 135.5.6.2 DrycleaningDetermine the dimensional change af-ter dry cleanings as directed in AATCC Test Method 158.NOTE 5Laund
30、erable fabrics are expected normally to be drycleaned,except where all or part of the fabric will not withstand drycleaning. Forexample, the fabric could contain a functional finish soluble in the solvent,or the fiber could be degraded by the solvent, which would be the casewith poly (vinyl chloride
31、) fiber. If a fabric would be harmed by ALLmethods of care except for drycleaning, it should be considered Drycleanonly.5.7 Colorfastness:5.7.1 LaunderingDetermine the colorfastness to launder-ing as directed in the applicable procedure of AATCC Method61.NOTE 6It has been reported that the results f
32、or staining, obtained bystandard AATCC Test Methods, on fabrics dyed to dark shades thatcontain a combination of polyester and spandex, or their blends, may notshow the full staining propensity of such fabrics in consumer use. It is,therefore, recommended that the staining results obtained by these
33、testsnot be used for acceptance testing of such fabrics.5.7.2 DrycleaningDetermine colorfastness to drycleaningas directed in AATCC Method 132.5.7.3 BleachingWhen testing with bleach is indicated, testas directed in AATCC Test Method 172172 for sodiumhypochlorite bleach or AATCC Test Method 188 for
34、non-chlorine bleach, as appropriate.5.7.4 Burnt Gas FumesDetermine the colorfastness toburnt gas fumes on the original fabric and after one launderingor one dry cleaning as directed inAATCC Method 23. Washingor drycleaning conditions shall be as for dimensional changetesting.5.7.5 CrockingDetermine
35、colorfastness to dry and wetcrocking as directed in AATCC Method 8 for solid shades andAATCC Method 116 for prints (see Note 6).5.7.6 PerspirationDetermine colorfastness to perspirationas directed in AATCC Method 15 (see Note 6).5.7.7 LightDetermine colorfastness to light as directed inAATCC Method
36、16.NOTE 7There are distinct differences in spectral distribution betweenthe various types of machines listed inAATCC Method 16, with no overallcorrelations between them. Consequently, these machines can not be usedinterchangeably. In case of controversy, results obtained with the water-cooled xenon-
37、arc machine listed in Option E shall prevail.5.8 Fabric AppearanceDetermine the fabric smoothnessappearance (SA) as directed in AATCC Method 124 after theapplicable laundering or drycleaning procedure.5.8.1 For fabrics not intended for use in durable pressgarments, determine the smoothness appearanc
38、e after pressingas specified in AATCC Test Method 135.5.9 FlammabilityThe flammability test and requirementsshall meet or exceed the applicable Flammable Fabrics Actmandatory standards as specified in 16 CFR 1610 (for adultnightwear), or 16 CFR 1615 or 16 CFR 1616 (for childrensnightwear).6. Keyword
39、s6.1 bathrobe; dressing gown; negligee; nightgown; pajamaASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such paten
40、t rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited eithe
41、r for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair he
42、aring you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D7021 143
