1、Designation: D 2051 03Standard Test Method forDurability of Finish of Zippers to Laundering1This standard is issued under the fixed designation D 2051; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A nu
2、mber in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 laun
3、dering.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. Refer
4、enced Documents2.1 ASTM Standards:2D 123 Terminology Relating to TextilesD 2050 Terminology Relating to ZippersD 2052 Test Method for Colorfastness of Zippers to Dry-cleaningD 2053 Test Method for Colorfastness of Zippers to LightD 2054 Test Method for Colorfastness of Zipper Tapes toCrockingD 2057
5、Test Method for Colorfastness of Zippers to Laun-deringD 2058 Test Method for Durability of Finish of Zippers toDrycleaningD 2059 Test Method for Resistance of Zippers to Salt Spray(Fog)D 2060 Test Methods for Measuring Zipper DimensionsD 2061 Test Methods for Strength Tests for ZippersD 2062 Test M
6、ethods for Operability of Zippers2.2 AATCC Method:Method 61 Colorfastness to Washing, Domestic; and Laun-dering, Commercial: Accelerated33. Terminology3.1 DefinitionsFor definitions of zipper terms used in thisstandard, refer to Terminology D 2050. For definitions of othertextile terminology used in
7、 this standard, refer to TerminologyD 123.4. 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 time. The zipperc
8、oating 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 D 2051 is useful for testing to determinethe
9、 effect of repeated laundering on the appearance of thedecorative 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 differences of prac
10、tical significancebetween reported test results for two labortories (or more),comparative test should be performed to determine if there is astatistical bias between them, using compentent statisticalassistance. As a minimum, the test samples should be used thatare as homogeneous as possible, that a
11、re drawn from thematerial from which the disparate test results were obtained,and that are randomly assigned in equal numbers to eachlaboratory for testing. Other materials with established testvalues may be used for this purpose. The test results from thetwo laboratories should be compared using a
12、statistical test forunpaired data, at a probability level chosen prior to the testingseries. If a bias is found, either its cause must be found andcorrected, or future test results must be adjusted in consider-ation of the known bias.5.3 The test method(s) in the standard along with those inTest Met
13、hods D 2052, D 2053, D 2054, D 2057, D 2058,D 2059, D 2060, D 2061, and D 2062 are a collection ofproven test methods. They can be used as aids in the evaluationof zippers without the need for a thorough knowledge of1This test method is under the jurisdiction of ASTM Committee D13 on Textiles,and is
14、 the direct responsibility of Subcommittee D13.54 on Subassemblies. Themethod was developed in cooperation with the Slide Fastener Association, Inc.Current edition approved Dec. 1, 2003. Published December 20032003. Origi-nally approved in 1961. Last previous edition approved in 1997 as D 2051 86(19
15、97).2For referenced ASTM standards, visit the ASTM web site, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. ForAnnual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM web site.3Technical Manual of the American Association of Textile
16、 Chemists andColorists, P.O. Box 12215, Research Triangle Park, NC 27709.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.zippers. The enumerated test methods do not provide for theevaluation of all zipper properties. Besides those pr
17、opertiesmeasured by means of the enumerated test methods there areother properties that may be important for the satisfactoryperformance of a zipper. Test methods for measuring thoseproperties have not been published either because no practicalmethods have yet been developed or because a valid evalu
18、ationof the information resulting from existing unpublished methodsrequires an intimate and thorough knowledge of zippers.6. Sampling6.1 Lot SampleAs a lot sample for acceptance testing,take at random the number of individual containers from eachshipping carton, as directed in an applicable material
19、 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 the variability between
20、shipping 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 random two zippersfrom e
21、ach 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 than 254 mm (10 in.). In
22、 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 stainless steel staples. If it
23、 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,Paragraph 7 Procedure, us
24、ing 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 and thesupplier.11. R
25、eport11.1 State that the specimens were tested as directed in TestMethod D 2051. Describe the material or product sampled, andthe method of sampling used.11.2 Report the following information:11.2.1 Number of specimens tested, and11.2.2 Number of specimens equal to or not equal to theagreed upon sta
26、ndard.12. Precision and Bias12.1 No justifiable statistical statement can be made oneither the precision or the bias 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
27、; laundering; zipperASTM 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 patent rights, and the riskof infringement
28、 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 either for revision of this standard or fo
29、r 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 hearing you shouldmake your views known
30、 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).D2051032
