ASTM_D_3692_-_89_2012.pdf

Designation:D369289(Reapproved 2012)Standard Practice forSelection of Zippers for Care-Labeled Apparel andHousehold Furnishings1This standard is issued under the fixed designation D3692;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the 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 practice provides guidelines to the manufacturerfor the selection of zippers to be used in garments andhousehold furnishings that have care labels.The use of thispractice will facilitate the selection of a zipper compatible withthe end-item requirements.In the absence of complete knowl-edge of end-item characteristics,it is not possible to stipulatespecific universal characteristics for a care label.Thereforefollowing initial selection,the chosen zipper should be testedin a prototype item to confirm its suitability.Zipper propertiesto be considered are those that may,following refurbishing,bethe ones likely to adversely affect the continued use andenjoyment of the item in which the zipper is installed.1.2 The product characteristics evaluated by this practiceare shrinkage,colorfastness,and ironing deformation.NOTE1Test methods of interest include Test Method D2052,TestMethod D2053,Test Method D2054,Test Method D2057,Test MethodD2060,1.3 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.Referenced 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 Zipper Tapes toCrockingD2057 Test Method for Colorfastness of Zippers to Laun-deringD2060 Test Methods for Measuring Zipper Dimensions3.Terminology3.1 For all terminology related to D13.54,Subassemblies,refer to D2050.3.1.1 The following terms are relevant to this standard:differential shrinkage,shrinkage.3.2 For all other terminology related to textiles,see Termi-nology D123.4.Significance and Use4.1 This practice is useful for the selection of zippers thatwill be compatible with items to be care labeled.4.2 This practice is useful as a guide for the selection of testmethods to evaluate zipper properties that are relevant tocare-labeled items.5.General5.1 It is advisable that zippers be closed when items inwhich they are installed are being laundered or dry cleaned.6.Shrinkage6.1 Excessive differential shrinkage between the zipper andthe material into which it is installed can impair item appear-ance and the functioning of the zipper.To avoid problems,zippers need to have compatible but not necessarily equalshrinkage to that of the fabric.The acceptable shrinkagedifferential may vary depending upon fabric weight and itemconstruction.The fabric weight,method of zipper installation,and zipper shrinkage should be considered in determining howmuch shrinkage differential is acceptable.6.2 Zipper shrinkage compatibility cannot be specified inabsolute terms,therefore,it is essential that a preliminarymock-up representing the planned zipper installation be con-structed and subjected to the proposed care refurbishingprocedure to determine the zipper shrinkage compatibility.1This practice is under the jurisdiction ofASTM Committee D13 on Textiles andis the direct responsibility of Subcommittee D13.54 on Subassemblies.This practicewas developed in cooperation with the Slide Fastener Association,Inc.Current edition approved July 1,2012.Published August 2012.Originallyapproved in 1978.Last previous edition approved in 2005 as D3692 89(2005)1.DOI:10.1520/D3692-89R12.2For referenced ASTM standards,visit the ASTM 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.3 The following guidelines should prove helpful by mini-mizing problems in the selecting of a compatible zipper basedon shrinkage.6.3.1 Lightweight MaterialsLightweight materials requirezippers having the most compatible shrinkage.For materials upto 0.27 kg/m2(8 oz/yd2),a differential shrinkage betweenzipper and fabric of approximately 1%has been found to besatisfactory.6.3.2 Heavyweight MaterialsMaterials over 0.27 kg/m2(8oz/yd2)do not always require low differential shrinkage.6.3.2.1 If the textile material shrinks less than the zipper,thedifferential shrinkage may exceed 1%.Zipper shrinkages ashigh as 4%have been found satisfa