Standard Test Method for Stretch Properties of Knitted Fabrics Having Low Power

SIGNIFICANCE AND USE
5.1 This test method specifies test conditions for measuring the fabric growth and fabric stretch of knitted fabrics intended for use in swimwear, anchored slacks, and other form-fitting apparel (also commonly known as semi-support apparel) applications, as well as test conditions for measuring the fabric growth of knitted fabrics intended for use in sportswear and other loose-fitting apparel (also commonly known as comfort stretch apparel) applications. The applicability of this test method to the measurement of fabric growth and fabric stretch of knitted fabrics intended for use in slacks, sport coats, and suits has not been determined.  
5.2 This test method is not recommended for acceptance testing of commercial shipment because the between-laboratory precision is known to be poor.  
5.2.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative tests should be performed to determine if their is a statistical bias between them, using competent statistical assistance. As a minimum, ensure the test samples to be used are as homogeneous as possible, are drawn from the material from which the disparate test results are obtained, and are assigned randomly in equal numbers to each laboratory for testing. The test results from the two laboratories 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.
SCOPE
1.1 This test method covers the measurement of fabric stretch and fabric growth of knitted fabrics intended for applications requiring low-power stretch properties.  
1.2 This test method includes procedures for fabric growth and stretch and can be used individually when required by individual specifications.  
1.3 This test method is not applicable to fabrics intended for support or other applications requiring high-power stretch properties.
Note 1: For information on testing high-power and woven stretch fabrics, refer to Test Methods D3107 and D6614.  
1.4 The values stated in either SI or inch-pound units are to be regarded separately as the standard. Within the text, the inch-pound units are shown 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 specification.  
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
30-Jun-2016
Technical Committee
Current Stage
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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: D2594 − 04 (Reapproved 2016)
Standard Test Method for
1
Stretch Properties of Knitted Fabrics Having Low Power
This standard is issued under the fixed designation D2594; 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 D2904 Practice for Interlaboratory Testing of a Textile Test
Method that Produces Normally Distributed Data (With-
1.1 This test method covers the measurement of fabric
3
drawn 2008)
stretch and fabric growth of knitted fabrics intended for
D2906 Practice for Statements on Precision and Bias for
applications requiring low-power stretch properties.
3
Textiles (Withdrawn 2008)
1.2 This test method includes procedures for fabric growth
D3107 Test Methods for Stretch Properties of Fabrics Wo-
and stretch and can be used individually when required by
ven from Stretch Yarns
individual specifications.
D4849 Terminology Related to Yarns and Fibers
1.3 This test method is not applicable to fabrics intended for D4850 Terminology Relating to Fabrics and Fabric Test
Methods
support or other applications requiring high-power stretch
properties. D6614 Test Method for Stretch Properties of Textile Fabrics
– CRE Method
NOTE 1—For information on testing high-power and woven stretch
fabrics, refer to Test Methods D3107 and D6614.
3. Terminology
1.4 The values stated in either SI or inch-pound units are to
3.1 Definitions:
be regarded separately as the standard. Within the text, the
3.1.1 For definition of textile terms used in this test method:
inch-pound units are shown in parentheses. The values stated
bench marks, refer to Terminology D4849.
in each system are not exact equivalents; therefore, each
3.1.2 For definitions of textile terms used in this test
system shall be used independently of the other. Combining
method: fabric growth; fabric stretch; low-power stretch and
values from the two systems may result in nonconformance
tension, refer to Terminology D4850.
with the specification.
3.1.3 For definitions of other textile terms used in this test
1.5 This standard does not purport to address all of the
method, refer to Terminology D123.
safety concerns, if any, associated with its use. It is the
4. Summary of Test Method
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4.1 Fabric Growth—Bench marks of a known distance are
bility of regulatory limitations prior to use.
made on a fabric specimen. A specified tension is applied to a
fabric specimen by a prescribed cycling technique.The tension
2. Referenced Documents
is removed and after several specific recovery times under zero
2
2.1 ASTM Standards:
tension, the distance between the bench marks is remeasured
D123 Terminology Relating to Textiles
after each time interval. The fabric growth is calculated from
D1776 Practice for Conditioning and Testing Textiles
the length difference between the bench marks prior to appli-
cation of the tension and after each respective recovery time
interval.
1
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
and is the direct responsibility of Subcommittee D13.59 on Fabric Test Methods,
4.2 Fabric Stretch—Bench marks of a known distance are
General.
made on a fabric specimen. A specified tension is applied to a
Current edition approved July 1, 2016. Published July 2016. Originally approved
fabric specimen by a prescribed cycling technique and the
in 1969. Last previous edition approved in 2012 as D2594 – 04(2012). DOI:
10.1520/D2594-04R16.
resulting distance between the bench marks measured. The
2
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
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2594 − 04 (2016)
fabric stretch is calculated from the length difference between 6.3 Lightweight Rule, fitted with a pin hook at the zero point
the bench marks prior to application of the tension and under of the scale for attachment to the specimen, graduated either in
while under the tension. units of percent of original gage length of 125 mm (5 in.) or in
1
units of 1 mm ( ⁄16 in.).
5. Significance and Use
6.4 Tensiometer or Weights, that can be attached to the
5.1 This test method specifies test conditions f
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2594 − 04 (Reapproved 2012) D2594 − 04 (Reapproved 2016)
Standard Test Method for
1
Stretch Properties of Knitted Fabrics Having Low Power
This standard is issued under the fixed designation D2594; 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
1.1 This test method covers the measurement of fabric stretch and fabric growth of knitted fabrics intended for applications
requiring low-power stretch properties.
1.2 This test method includes procedures for fabric growth and stretch and can be used individually when required by individual
specifications.
1.3 This test method is not applicable to fabrics intended for support or other applications requiring high-power stretch
properties.
NOTE 1—For information on testing high-power and woven stretch fabrics, refer to Test Methods D3107 and D6614.
1.4 The values stated in either SI or inch-pound units are to be regarded separately as the standard. Within the text, the
inch-pound units are shown 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 specification.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
D123 Terminology Relating to Textiles
D1776 Practice for Conditioning and Testing Textiles
3
D2904 Practice for Interlaboratory Testing of a Textile Test Method that Produces Normally Distributed Data (Withdrawn 2008)
3
D2906 Practice for Statements on Precision and Bias for Textiles (Withdrawn 2008)
D3107 Test Methods for Stretch Properties of Fabrics Woven from Stretch Yarns
D4849 Terminology Related to Yarns and Fibers
D4850 Terminology Relating to Fabrics and Fabric Test Methods
D6614 Test Method for Stretch Properties of Textile Fabrics – CRE Method
3. Terminology
3.1 Definitions:
3.1.1 For definition of textile terms used in this test method: bench marks, refer to Terminology D4849.
3.1.2 For definitions of textile terms used in this test method: fabric growth; fabric stretch; low-power stretch and tension, refer
to Terminology D4850.
3.1.3 For definitions of other textile terms used in this test method, refer to Terminology D123.
4. Summary of Test Method
4.1 Fabric Growth—Bench marks of a known distance are made on a fabric specimen. A specified tension is applied to a fabric
specimen by a prescribed cycling technique. The tension is removed and after several specific recovery times under zero tension,
1
This test method is under the jurisdiction of ASTM Committee D13 on Textiles and is the direct responsibility of Subcommittee D13.59 on Fabric Test Methods, General.
Current edition approved July 1, 2012July 1, 2016. Published August 2012July 2016. Originally approved in 1969. Discontinued November 1997 and reinstated as
ε2
D2594 – 99.Last previous edition approved in 20082012 as D2594 – 04(2008)(2012). . DOI: 10.1520/D2594-04R12.10.1520/D2594-04R16.
2
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 the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2594 − 04 (2016)
the distance between the bench marks is remeasured after each time interval. The fabric growth is calculated from the length
difference between the bench marks prior to application of the tension and after each respective recovery time interval.
4.2 Fabric Stretch—Bench marks of a known distance are made on a fabric specimen. A specified tension is applied to a fabric
specimen by a prescribed cycling technique and the resulting distance between the bench marks measured. The fabric stretch is
calculated from the length difference between the bench marks pri
...

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