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ASTM D6774-02(2010)

(Test Method)

Standard Test Method for Crimp and Shrinkage Properties for Textured Yarns Using a Dynamic Textured Yarn Tester (Withdrawn 2019)

Standard Test Method for Crimp and Shrinkage Properties for Textured Yarns Using a Dynamic Textured Yarn Tester (Withdrawn 2019)

SIGNIFICANCE AND USE
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.
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 a 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, 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.
The properties and their variability as measured by this method relate to bulk appearance, stretch and recovery of fabrics and dyeability of yarns.
For some yarns, elapsed time between processing and testing has a marked effect on the results, of this test, especially during the first 72 h. The effect is caused by stress decay which is known to be minimal beyond the seventh day and after which time the yarn remains relatively stable. Therefore, specimens should only be compared if tested after the same elapsed time. Samples can be tested at-line, thus having little to no elapsed time between processing and testing.
SCOPE
1.1 This test method covers the determination of crimp contraction, residual fiber shrinkage and their variability of all types of filament yarns (partially oriented yarn (POY), fully oriented yarn (FOY), flat yarns, textured and bulked continuous filament (BCF) carpet yarns) using an automated tester.
Note 1—For another method of testing crimp in textured yarns, refer to Test Method D4031.
1.1.1 This method may also be used for non-textured yarns.
1.2 This test method is limited to crimped, multi-filament yarns ranging from 22.0 to 890 dtex (15 to 800 denier) and for BCF yarns from 890 to 4200 dtex (800 to 3800 denier).
1.3 The values stated in either SI or US 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. Combining values from the two systems may result in nonconformance with the method.
1.4 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-May-2010
ICS
59.080.20 - Yarns
Technical Committee
D13 - Textiles
Drafting Committee
D13.58 - Yarns and Fibers
Current Stage
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ASTM D6774-02(2010) - Standard Test Method for Crimp and Shrinkage Properties for Textured Yarns Using a Dynamic Textured Yarn Tester (Withdrawn 2019)ASTM D6774-02(2010) - Standard Test Method for Crimp and Shrinkage Properties for Textured Yarns Using a Dynamic Textured Yarn Tester (Withdrawn 2019)
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ASTM D6774-02(2010) - Standard Test Method for Crimp and Shrinkage Properties for Textured Yarns Using a Dynamic Textured Yarn Tester (Withdrawn 2019)
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Standards Content (Sample)

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: D6774 − 02 (Reapproved 2010)
Standard Test Method for
Crimp and Shrinkage Properties for Textured Yarns Using a
1
Dynamic Textured Yarn Tester
This standard is issued under the fixed designation D6774; 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. Terminology
3.1 For definitions of textile terms in this test method, refer
1.1 This test method covers the determination of crimp
to Terminology D4849. For other textile terms used in this test
contraction, residual fiber shrinkage and their variability of all
method, refer to Terminology D123.
types of filament yarns (partially oriented yarn (POY), fully
oriented yarn (FOY), flat yarns, textured and bulked continu-
4. Summary of Test Method
ous filament (BCF) carpet yarns) using an automated tester.
4.1 The specimen passes through a pretension device to
NOTE1—Foranothermethodoftestingcrimpintexturedyarns,referto
remove crimp. The specimen then passes, at a constant speed,
Test Method D4031.
around an input roller, to a calibrated sensor which maintains a
1.1.1 This method may also be used for non-textured yarns.
specific tension.
1.2 This test method is limited to crimped, multi-filament
4.1.1 Subsequently, the specimen passes through a heating
yarns ranging from 22.0 to 890 dtex (15 to 800 denier) and for element, at a low tension, where the specimen shrinks and
BCF yarns from 890 to 4200 dtex (800 to 3800 denier).
again is crimped.
4.1.2 The crimped specimen then goes to an intermediate
1.3 The values stated in either SI or US customary units are
roll, at a low tension.
to be regarded separately as standard. Within the text, the U.S.
4.1.3 The specimen then travels to a second sensor, which
customary units are in parentheses. The values stated in each
maintains a tension equal to the pretension applied, to remove
system are not exact equivalents; therefore, each system shall
developed crimp.
be used independently of the other. Combining values from the
two systems may result in nonconformance with the method.
4.2 Residual fiber shrinkage, crimp developed, and maxi-
mum total contraction are calculated by the computer software
1.4 This standard does not purport to address all of the
using speeds of the input, intermediate and output rolls.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Significance and Use
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5.1 Test Method D6774, for determining maximum total
contraction, crimp, and residual fiber shrinkage in textured
2. Referenced Documents
filament yarns is suitable for acceptance testing of commercial
2 shipments.
2.1 ASTM Standards:
5.1.1 If there are differences of practical significance be-
D123 Terminology Relating to Textiles
tween reported test results for two laboratories (or more),
D2258 Practice for Sampling Yarn for Testing
comparative tests should be performed to determine if there is
D4031 Test Method for Bulk Properties of Textured Yarns
a statistical bias between them, using competent statistical
D4849 Terminology Related to Yarns and Fibers
assistance. As a minimum, use the samples for such a com-
parative tests that are as homogeneous as possible, drawn from
thesamelotofmaterialasthesamplesthatresultedindisparate
1
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
results during initial testing and randomly assigned in equal
and is the direct responsibility of Subcommittee D13.58 on Yarns and Fibers.
numbers to each laboratory. The test results from the labora-
Current edition approved June 1, 2010. Published September 2010. Originally
tories involved should be compared using a statistical test for
approved in 2002. Last previous edition approved in 2002 as D6774-02. DOI:
10.1520/D6774-02R10.
unpaired data, a probability level chosen prior to the testing
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
series. If a bias is found, either its cause must be found and
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
corrected, or future test results for that material must be
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. adjusted in consideration of the known bias.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6774 − 02 (2010)
5.2 The properties and their variability as measured by th
...

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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.  
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 a 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, 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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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.  
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1.2 Yarn number variability properties include percent density spread (%DS), coefficient of variation (%CV), density frequency variation.  
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Standard Test Method for Twist in Yarns by Direct-Counting

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

SIGNIFICANCE AND USE
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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 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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