1、Designation: D2051 14Standard Test Method forDurability of Finish of Zippers to Laundering1This standard is issued under the fixed designation D2051; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A numb
2、er in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of the dura-bility of the enamel or other decorative coating of a zipperwhen subjected to launder
3、ing.1.2 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenc
4、ed Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD2050 Terminology Relating to Fasteners and ClosuresUsed with TextilesD2052 Test Method for Colorfastness of Zippers to Dry-cleaningD2053 Test Method for Colorfastness of Zippers to LightD2054 Test Method for Colorfastness of Zippe
5、r Tapes toCrockingD2057 Test Method for Colorfastness of Zippers to Laun-deringD2058 Test Method for Durability of Finish of Zippers toDrycleaningD2059 Test Method for Resistance of Zippers to Salt Spray(Fog)D2060 Test Methods for Measuring Zipper DimensionsD2061 Test Methods for Strength Tests for
6、ZippersD2062 Test Methods for Operability of Zippers2.2 AATCC Method:Method 61 Colorfastness to Washing, Domestic; andLaundering, Commercial: Accelerated33. Terminology3.1 DefinitionsFor definitions of zipper terms used in thisstandard, refer to Terminology D2050. For definitions of othertextile ter
7、minology used in this standard, refer to TerminologyD123.4. Summary of Test Method4.1 Specimens are laundered in laboratory equipment at alow liquor-to-goods ratio under conditions of temperature,bleaching, and abrasive action that produce the effect ofrepeated launderings in a conveniently short ti
8、me. The zippercoating is abraded by the throw, slide, and impact of anappropriate number of steel balls. The effects of the test onzipper coating are evaluated by noting the loss of coating onthe zipper chain or components, or both.5. Significance and Use5.1 Test Method D2051 is useful for testing t
9、o determine theeffect of repeated laundering on the appearance of the decora-tive coating of a zipper.5.2 This test method is considered satisfactory for accep-tance testing of commercial shipments because the method hasbeen used extensively in the trade for acceptance testing.5.2.1 If there are dif
10、ferences of practical significancebetween reported test results for two laboratories (or more),comparative test should be performed to determine if there is astatistical bias between them, using competent statistical assis-tance. As a minimum, the test samples should be used that areas homogeneous a
11、s possible, that are drawn from the materialfrom which the disparate test results were obtained, and thatare randomly assigned in equal numbers to each laboratory fortesting. Other materials with established test values may beused for this purpose. The test results from the two laboratoriesshould be
12、 compared using a statistical test for unpaired data, ata probability level chosen prior to the testing series. If a bias isfound, either its cause must be found and corrected, or futuretest results must be adjusted in consideration of the knownbias.5.3 The test method(s) in the standard along with
13、those inTest Methods D2052, D2053, D2054, D2057, D2058, D2059,D2060, D2061, and D2062 are a collection of proven testmethods. They can be used as aids in the evaluation of zipperswithout the need for a thorough knowledge of zippers. The1This test method is under the jurisdiction of ASTM Committee D1
14、3 on Textilesand is the direct responsibility of Subcommittee D13.54 on Subassemblies. Themethod was developed in cooperation with the Slide Fastener Association, Inc.Current edition approved Feb. 1, 2014. Published March 2014. Originallyapproved in 1961. Last previous edition approved in 2009 as D2
15、051 03(2009).DOI: 10.1520/D2051-14.2For referenced ASTM standards, visit the ASTM web site, 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 web site.3Technical Manual of the
16、 American Association of Textile Chemists andColorists, P.O. Box 12215, Research Triangle Park, NC 27709.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1enumerated test methods do not provide for the evaluation ofall zipper properties
17、. Besides those properties measured bymeans of the enumerated test methods there are other proper-ties that may be important for the satisfactory performance ofa zipper. Test methods for measuring those properties have notbeen published either because no practical methods have yetbeen developed or b
18、ecause a valid evaluation of the informa-tion resulting from existing unpublished methods requires anintimate and thorough knowledge of zippers.6. Sampling6.1 Lot SampleAs a lot sample for acceptance testing, takeat random the number of individual containers from eachshipping carton, as directed in
19、an applicable material specifi-cation or other agreement between the purchaser and thesupplier. Consider individual containers from each shippingcarton to be the primary sampling units.NOTE 1An adequate specification or other agreement between thepurchaser and supplier requires taking into account t
20、he variability betweenshipping cartons and between zippers in a container to provide a samplingplan with a meaningful producers risk, consumers risk, acceptablequality level, and limiting quality level.6.2 Laboratory Sample and Test SpecimensAs a labora-tory sample for acceptance testing, take at ra
21、ndom two zippersfrom each shipping container in the lot sample. Consider thezippers as both the laboratory samples and the test specimens.7. Test Specimen7.1 The test specimen shall consist either of a completelyassembled zipper or a length of chain. In either case, the lengthshall not be greater th
22、an 254 mm (10 in.). In the case of acompletely assembled zipper that is longer than 254 mm, thespecimen may be made up by cutting out and removing thecentral portion of the chain, and then securely attaching the cutends together, using suitable noncorrosive materials such assewing thread or stainles
23、s steel staples. If it is desired to test theentire length of a long zipper, it should be cut into parts 254mm or less in length and these parts tested separately.8. Conditioning8.1 No special environmental conditions are required.9. Procedure9.1 Test each specimen as directed in AATCC Method 61,Par
24、agraph 7 Procedure, using Test Condition 3A.10. Interpretation of Results10.1 Interpret the test results by visually examining thechain and components for exposed base metal and comparingthe observations to samples illustrating an acceptable degree ofcoating loss as agreed upon between the purchaser
25、 and thesupplier.11. Report11.1 State that the specimens were tested as directed in TestMethod D2051 according to AATCC Method 61, Paragraph 7Procedure, using Test Condition 3A. Describe the material orproduct sampled, and the method of sampling used.11.2 Report the following information:11.2.1 Numb
26、er of specimens tested (if more than one testcycle is required by agreement, report the number of testcycles), and11.2.2 Number of specimens equal to or not equal to theagreed upon standard.12. Precision and Bias12.1 No justifiable statistical statement can be made oneither the precision or the bias
27、 of the procedures in testingcoating resistance to abrasion in laundering since the testmerely states whether there is conformance to an agreed uponstandard.13. Keywords13.1 durability; laundering; zipperASTM International takes no position respecting the validity of any patent rights asserted in co
28、nnection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the respo
29、nsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful
30、 consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International,
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