ASTM_D_3693_-_02_2021.pdf

Designation:D369302(Reapproved 2021)Standard Specification forLabeled Length per Holder of Sewing Thread1This standard is issued under the fixed designation D3693;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 specification covers requirements for the labeledlengths of sewing threads of all materials.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD204 Test Methods for Sewing ThreadsD3888 Terminology for Yarn Spinning SystemsD3990 Terminology Relating to Fabric DefectsD4849 Terminology Related to Yarns and Fibers3.Terminology3.1 Definitions:3.1.1 For definitions of textile terms used in thisspecification,thread holder and sewing thread,refer to Termi-nology D4849.3.1.2 For other textile terms used in this specification,referto Terminology standards D123,D3888,D3990,and D4849.4.Requirements4.1 The average for all holders shall equal or exceed thelabeled length.4.2 For home sewing spools,the observed length of indi-vidual holders shall equal or exceed the percent of labeledlength shown in Table 1.4.3 For ready-made bobbins,the observed length of indi-vidual holders shall equal or exceed 97%of the labeled length.4.4 For all other holders,when the sample size is nine orfewer,the observed length of individual holders shall equal orexceed 95%of the labeled length.For a sample size of ten ormore the observed length of one holder may be less than 95%of the labeled length.4.5 If the initial sample consists of fewer than ten holdersand the average length measured fails to conform to therequirements of 4.1 but meets those of 4.2,4.3,or 4.4,asappropriate,take additional specimens from the lot and testuntil a total of ten have been measured.Reevaluate the resultsof these ten specimens against the requirements of 4.1,4.2,4.3,or 4.4,as appropriate.If the new average conforms with therequirements of 4.1 and the individual holders with therequirements of 4.2,4.3,or 4.4,as appropriate,consider the lotacceptable.4.5.1 If the original lot consists of fewer than ten holders,the supplementary sample will be one half of the holdersremaining in the lot following the initial sampling.5.Sampling5.1 LotUnless otherwise agreed upon between the pur-chaser and supplier,a lot shall be a discrete manufacturing unitor a billed quantity of a specific color,ticket size,and lengthput-up of thread.A billed quantity can consist of a single unit,a carton,box,or multiple units of either,containing a numberof holders of thread.NOTE1An adequate specification or other agreement between thepurchaser and the supplier requires taking into account variability betweenshipping units,between packages,or ends within shipping unit,andbetween specimens from a single package so as to provide a sampling planwith a meaningful producers risk,users risk,acceptable quality level,and limiting quality level.5.2 SampleUnless otherwise agreed upon between thepurchaser and supplier,and except for ready-made bobbins,thesample,chosen at random,shall be 10%of the holders in thelot,with a minimum of one holder,up to a maximum of tenholders.The lot sample and laboratory sample are synony-mous.1This specification is under the jurisdiction of ASTM Committee D13 onTextiles and is the direct responsibility of Subcommittee D13.58 on Yarns andFibers.Current edition approved July 1,2021.Published July 2021.Originally approvedin 1978.Last previous edition approved in 2016 as D3693 02(2016).DOI:10.1520/D3693-02R21.2For 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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.15.2.1 For ready-made bobbins the sample shall be as shownin Table 2.5.3 SpecimenThe test specimen is a holder of threadwhether a cone,tube,spool,ready-made bobbin,or other.6.Test Method6.1 Determine the leng