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ASTM D6717-07

(Test Method)

Standard Test Method for Linear Density of Elastomeric Yarns (Skein Specimens)

Standard Test Method for Linear Density of Elastomeric Yarns (Skein Specimens)

SIGNIFICANCE AND USE
This test method is considered satisfactory for acceptance testing of commercial shipments because current estimates of between-laboratory precision are acceptable and the method is used extensively in the trade for acceptance testing.
5.1.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, use samples for such comparative tests that are as homogeneous as possible, drawn from the same lot of material as the samples that resulted in disparate results during initial testing, and randomly assigned in equal numbers to each laboratory. The test results from the laboratories involved should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If bias is found, either its cause must be found and corrected, or future test results for that material must be adjusted in consideration of the known bias.
Linear density of elastomeric yarns is used in some calculations for tensile and elastic properties.
The test method is based on elastomeric yarns in the as-produced condition, but may be used for treated elastomeric yarns provided the treatment is specified. The method does not cover the removal of finish for the determination of linear density of “finish-free” elastomeric yarns.
SCOPE
1.1 This test method covers the determination of the linear density of "as produced" elastomeric yarns made from rubber, spandex or other elastomers using a skein.
Note 1—For the determination of linear density of elastomeric yarns using short length specimens, refer to Test Method D 2591.
1.2 The method is not applicable to covered, wrapped, or core-spun yarns, or yarns spun from elastomeric staple, or elastomeric yarns removed from fabrics.
1.3 This test method is applicable to elastomeric yarns having a range of 40 to 3200 dtex (36 to 2900 denier).
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
31-Dec-2006
ICS
59.080.20 - Yarns
Technical Committee
D13 - Textiles
Drafting Committee
D13.58 - Yarns and Fibers
Current Stage
Ref Project

Relations

Replaces
ASTM D6717-01 - Standard Test Method for Linear Density of Elastomeric Yarns (Skein Specimens)
Effective Date
01-Jan-2007
Replaced By
ASTM D6717-07(2012) - Standard Test Method for Linear Density of Elastomeric Yarns (Skein Specimens)
Effective Date
01-Jul-2012
Referred By
ASTM D2731-21 - Standard Test Method for Elastic Properties of Elastomeric Yarns (CRE Type Tensile Testing Machines)
Effective Date
01-Jan-2007
Referred By
ASTM D2653-07(2018) - Standard Test Method for Tensile Properties of Elastomeric Yarns (CRE Type Tensile Testing Machines)
Effective Date
01-Jan-2007
Referred By
ASTM D2591-07(2020) - Standard Test Method for Linear Density of Elastomeric Yarns (Short Length Specimens)
Effective Date
01-Jan-2007

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ASTM D6717-07 - Standard Test Method for Linear Density of Elastomeric Yarns (Skein Specimens)ASTM D6717-07 - Standard Test Method for Linear Density of Elastomeric Yarns (Skein Specimens)
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ASTM D6717-07 - Standard Test Method for Linear Density of Elastomeric Yarns (Skein Specimens)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D6717–07
Standard Test Method for
1
Linear Density of Elastomeric Yarns (Skein Specimens)
This standard is issued under the fixed designation D6717; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2 For all other terminology related to textiles, refer to
Terminology D123.
1.1 This test method covers the determination of the linear
density of “as produced” elastomeric yarns made from rubber,
4. Summary of Test Method
spandex or other elastomers using a skein.
4.1 Aspecimen of specified length is wound into skein form
NOTE 1—For the determination of linear density of elastomeric yarns
on a reel.The skein is cut, removed from the reel and weighed.
using short length specimens, refer to Test Method D2591.
Linear density is calculated using the mass of the skein and the
1.2 The method is not applicable to covered, wrapped, or
length of yarn.
core-spun yarns, or yarns spun from elastomeric staple, or
5. Significance and Use
elastomeric yarns removed from fabrics.
1.3 This test method is applicable to elastomeric yarns
5.1 This test method is considered satisfactory for accep-
having a range of 40 to 3200 dtex (36 to 2900 denier). tance testing of commercial shipments because current esti-
1.4 The values stated in SI units are to be regarded as the
mates of between-laboratory precision are acceptable and the
standard. The values given in parentheses are for information method is used extensively in the trade for acceptance testing.
only.
5.1.1 If there are differences of practical significance be-
1.5 This standard does not purport to address all of the tween reported test results for two laboratories (or more),
safety concerns, if any, associated with its use. It is the
comparative tests should be performed to determine if there is
responsibility of the user of this standard to establish appro- a statistical bias between them, using competent statistical
priate safety and health practices and determine the applica-
assistance. As a minimum, use samples for such comparative
bility of regulatory limitations prior to use. teststhatareashomogeneousaspossible,drawnfromthesame
lot of material as the samples that resulted in disparate results
2. Referenced Documents
during initial testing, and randomly assigned in equal numbers
2
2.1 ASTM Standards:
to each laboratory. The test results from the laboratories
D123 Terminology Relating to Textiles
involved should be compared using a statistical test for
D1776 Practice for Conditioning and Testing Textiles
unpaired data, at a probability level chosen prior to the testing
D2258 Practice for Sampling Yarn for Testing
series. If bias is found, either its cause must be found and
D2591 Test Method for Linear Density of Elastomeric
corrected, or future test results for that material must be
Yarns (Short Length Specimens)
adjusted in consideration of the known bias.
D4849 Terminology Related to Yarns and Fibers
5.2 Linear density of elastomeric yarns is used in some
calculations for tensile and elastic properties.
3. Terminology
5.3 The test method is based on elastomeric yarns in the
3.1 For all terminology relating to D13.58, Yarns and
as-produced condition, but may be used for treated elastomeric
Fibers, refer to Terminology D4849.
yarns provided the treatment is specified. The method does not
3.1.1 The following terms are relevant to this standard:
cover the removal of finish for the determination of linear
denier, elastomeric yarn, linear density, tex.
density of “finish-free” elastomeric yarns.
6. Apparatus
1
This test method is under the jurisdiction ofASTM Committee D13 onTextiles
3
6.1 Reel , 1.125-m (1.230-yd) circumference, with multiple
and is the direct responsibility of Subcommittee D13.58 on Yarns and Fibers.
Current edition approved Jan. 1, 2007. Published January 2007. Originally
positions for making several skeins at one time, guides that
approved in 2001. Last previous edition approved in 2001 as D6717 – 01. DOI:
apply minimal friction to the running yarn, and with vertical-
10.1520/D6717-07.
2 mount creel, with automatic counter to set and count the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
3
the ASTM website. This test apparatus is commercially available.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D6717–07
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5.1 This is a quick method used for the determination of the approximate yarn number of short-length specimens taken from packages or fabrics.  
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5.1 Test Method D6774, for determining maximum total contraction, crimp, and residual fiber shrinkage in textured filament yarns is suitable for acceptance testing of commercial shipments.  
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5.1 Test Method D1423 for testing twist in yarns by direct-counting is considered satisfactory for acceptance testing of commercial shipments because current estimates of between-laboratory precision are acceptable and the method has been used extensively in the trade for acceptance testing.  
5.1.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum use the samples for such comparative tests as homogeneous as possible, drawn from the same lot of material that resulted in the disparate test results and randomly in equal numbers to each laboratory. The test results from the laboratories involved should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If a bias is found, either its cause must be found and corrected, or future test results for that material must be adjusted in consideration of the known bias.  
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1.1 This test method covers the determination of the amount and direction of twist at the completion of any stage of twisting in single (spun or filament), plied, cabled, or novelty (exclusive of long-term repeat patterns) yarns. The procedures are designed primarily for yarns in packages, but, with special precautions, they are applicable to yarns taken from fabrics. The procedure for spun yarn in 9.2 is also applicable to rovings.  
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1.3 This test method is not intended for yarns that extend more than 5.0 % when tension is increased from 2.5 to 7.5 mN/tex [0.25 to 0.75 gf/tex]. Following the procedures of this test method for such yarns would be independent of the bias and precision determined for this test method. The report from such testing should include the tension used for this testing.  
1.4 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
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Note 2: This test method has been evaluated for use in de...

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ASTM D6612-00(2022)(Test Method)
Standard Test Method for Yarn Number and Yarn Number Variability Using Automated Tester

SIGNIFICANCE AND USE
5.1 Test Method D6612 for yarn number and yarn number variability is satisfactory for acceptance of commercial shipments and is used in the trade.  
5.1.1 If there are differences of practical significance between the reported test results for two or more laboratories, comparative tests should be performed by those laboratories to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, samples used for each comparative tests should be as homogeneous as possible, drawn from the same lot of material as the samples that results in disparate results during initial testing, and randomly assigned in equal numbers to each laboratory. Other fabrics with established tests values are used for this purpose. The test results from the laboratories involved should be compared appropriate statistical analysis and a probability level chosen by the two parties before testing begins, at a probability level chosen prior to the testing series. If a bias is found, either its cause must be found and corrected, or future test results adjusted in consideration of the known bias.  
5.1.2 The average results from the two laboratories should be compared using appropriate statistical analysis and a probability level chosen by the two parties before the testing is begun. If a bias is found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results with consideration to the known bias.  
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1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM D2258/D2258M-16(2022)(Practice)
Standard Practice for Sampling Yarn for Testing

SIGNIFICANCE AND USE
5.1 Assigning a value to any property of the material in a container or in a lot, consignment, or delivery involves a measurement process that includes both sampling and testing procedures. The correctness of the value assigned depends upon the variability due to testing and sampling plan. Even when the variability due to testing is minimized by carefully developed procedures, correct and consistent estimates of the true value of the property are possible only when the sampling procedure avoids systematic bias, minimizes variations due to sampling, and provides a laboratory sample of adequate size.  
5.2 Practice D2258 may not give the most efficient sampling plan that might be devised in special situations but does present a general procedure that gives satisfactory precision with an economical amount of sampling. Many plans that include stratified sampling can be found in textbooks and through the use of statistical software tools and calculators.  
5.2.1 If not specified by the purchaser, the manufacturer will define suitable production lots based on one or more of the following: supply lot, production shift/time segment, production equipment or production line, operator, designated shipment, production run, or a combination herein.  
5.2.2 If not specified by the purchaser, the manufacturer will define sampling and testing frequency based on the following: process capability or capability analysis, historical trends, level of detection rate required, confidence level requirements, known variations or special causes, or both. Every attempt to ensure conforming product is being produced, identify potential nonconforming product or proper isolation and identification, will be carried out by the manufacturer.  
5.2.3 Sampling count and number of specimens will be based on standard practice listed within the document. Increase or decrease in count or frequency might be applied based on typical standard deviation, precision and confidence level, Measurement System...
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1.1 This practice describes a procedure for the division of shipments of yarn into test lots and the sampling of such lots for testing.  
1.1.1 This practice can be used for lot sample testing of yarns for both pre-fabric production and post-fabric production.  
1.2 This practice is applicable to single, plied, or cabled yarns, and cords, made of any fiber or mixture of fibers, and supported on any form of package, including beams.  
1.3 This practice also describes procedures for the sampling of yarn(s) removed from woven or knitted fabrics; however, when thus sampled, the yarns are usually not representative of entire shipments, as referred to in 1.1. Consequently, the resultant sampling can only be used to determine the characteristics of the yarn and is usually not used for acceptance testing. Moreover, it should be recognized that the characteristics of yarns from fabrics may be different than the characteristics of the same yarn(s), prior to being entered into the fabric manufacturing process.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical...

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ASTM
ASTM D3693-02(2021)(Specification)
Standard Specification for Labeled Length per Holder of Sewing Thread

ABSTRACT
This specification covers the requirements for the labeled lengths per holder of sewing threads of all materials. The test specimen is a thread holder whether a cone, tube, spool, ready-made bobbin, or any other holders. The observed length for all holders such as home sewing spools, ready-made bobbins, or all other holders which depends on the sampling size shall equal or exceed a certain percentage of the minimum allowable labeled length.
SCOPE
1.1 This specification covers requirements for the labeled lengths of sewing threads of all materials.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM D2731-21(Test Method)
Standard Test Method for Elastic Properties of Elastomeric Yarns (CRE Type Tensile Testing Machines)

SIGNIFICANCE AND USE
5.1 This test method is considered satisfactory for acceptance testing of commercial shipments since current estimates of between-laboratory precision are acceptable and the method is used extensively in the trade for acceptance testing.  
5.1.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, use samples for such comparative tests that are as homogeneous as possible, drawn from the same lot of material as the samples that resulted in disparate results during initial testing, and randomly assigned in equal numbers to each laboratory. The test results from the laboratories involved should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If bias is found, either its cause must be found and corrected, or future test results for that material must be adjusted in consideration of the known bias.  
5.2 Force at Specified Elongation (FASE) is a measure of the tensile force occurring while extending a textile material within specified limits. This characteristic of elastomeric yarn indicates the resistance that will have to be overcome by the wearer while putting on a garment made of the material and is also an indication of the garment's resistance to deformation caused by normal body movements during wear. The elongations used for these measurements are typically 100 %, 200 % and 300 %.  
5.3 Permanent Deformation (set) is a measure of the increase in length of an elastomeric yarn resulting from cyclic stretching and relaxation. The characteristic is a visible indication of the realignment of intermolecular bonds within the elastic material. As with stress decay, the amount of set increases with yarn extension; however, for any particular extension, little or no additional set takes place after...
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1.1 This test method covers the determination of elastic properties of “as produced” elastomeric yarns made from rubber, spandex or other elastomers. Elastic properties include force at specified elongations, permanent deformation and stress decay. Other hysteresis related properties can be calculated.
Note 1: For a method designed specifically for testing rubber threads, refer to Test Method D2433.  
1.2 This test method is not applicable to covered, wrapped, or core-spun yarns or yarns spun from elastomeric staple.  
1.3 This test method is applicable to elastomeric yarns having a range of 40 to 3200 dtex (36 to 2900 denier).  
1.4 The values stated in either SI units or U.S. Customary units are to be regarded separately as standard. Within the text, the U.S. Customary units are in parentheses. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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