ASTM D6283-21

Standard Test Method for Tuft Element Length of Uncoated Pile Yarn Floor Coverings

SIGNIFICANCE AND USE
5.1 The determination of the tuft length of pile yarn floor covering is useful in quality and cost control during the manufacture of pile yarn floor covering. Both appearance and performance can be affected by changes in this characteristic.  
5.2 In case there are disputable differences between reported test results for two or more laboratories, comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. At a minimum, test samples should be used that are as homogeneous as possible, that are drawn from the material from which disputable test results were obtained, and that 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 must be adjusted in consideration of the known bias.
SCOPE
1.1 This test method covers the measurement of tuft length and pile yarn length of uncoated pile floor coverings.  
1.2 Usually the tuft elements measured as directed in this test method will each be bound at only one binding site, but this test method also may be used for tuft elements bound at more than one binding site, provided that every tuft element measured is bound at the same number of binding sites.  
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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.

General Information

• Status: Published
• Publication Date: 31-Dec-2020
• ICS: 97.150 - Floor coverings
• Technical Committee: D13 - Textiles
• Drafting Committee: D13.21 - Pile Floor Coverings

Standards Content (Sample)

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.
Designation: D6283 − 21
Standard Test Method for
1
Tuft Element Length of Uncoated Pile Yarn Floor Coverings
This standard is issued under the fixed designation D6283; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 The following terms are relevant to this standard:
carpet, cut pile yarn floor covering, finished, finished pile yarn
1.1 This test method covers the measurement of tuft length
floor covering, floor covering, loop pile yarn floor covering,
and pile yarn length of uncoated pile floor coverings.
pile, pile yarn floor covering, textile floor covering, tuft, tuft
1.2 Usually the tuft elements measured as directed in this
element, tuft leg, tuft length, tufted fabric.
test method will each be bound at only one binding site, but
3.2 For definitions of other terms related to textiles, refer to
this test method also may be used for tuft elements bound at
Terminology D123.
more than one binding site, provided that every tuft element
measured is bound at the same number of binding sites.
4. Summary of Test Method
1.3 The values stated in inch-pound units are to be regarded
4.1 The individual tuft elements of like character (cut or
as standard. The values given in parentheses are mathematical
loop,andheight)areremovedfromthetestsampleandplaced,
conversions to SI units that are provided for information only
one at a time, in a grooved holder that maintains the tuft fibers
and are not considered standard.
in a straight line while the length of the tuft element is
1.4 This standard does not purport to address all of the
measured with a graduated scale and a magnifying glass.
safety concerns, if any, associated with its use. It is the
4.2 In loop pile yarn floor covering, adjacent elements are
responsibility of the user of this standard to establish appro-
first separated by cutting the connecting loops at the midpoint
priate safety, health, and environmental practices and deter-
of the bend with sharp scissors before the tuft elements are
mine the applicability of regulatory limitations prior to use.
withdrawn from the backing fabric.
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5. Significance and Use
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
5.1 The determination of the tuft length of pile yarn floor
mendations issued by the World Trade Organization Technical
covering is useful in quality and cost control during the
Barriers to Trade (TBT) Committee.
manufacture of pile yarn floor covering. Both appearance and
performance can be affected by changes in this characteristic.
2. Referenced Documents
5.2 Incasetherearedisputabledifferencesbetweenreported
2
2.1 ASTM Standards:
test results for two or more laboratories, comparative tests
D123Terminology Relating to Textiles
should be performed to determine if there is a statistical bias
D1776Practice for Conditioning and Testing Textiles
between them, using competent statistical assistance. At a
D5684Terminology Relating to Pile Floor Coverings
minimum, test samples should be used that are as homoge-
neousaspossible,thataredrawnfromthematerialfromwhich
3. Terminology
disputable test results were obtained, and that are assigned
3.1 FordefinitionsoftermsrelatingtoPileFloorCoverings, randomly in equal numbers to each laboratory for testing. The
D13.21, refer to Terminology D5684. testresultsfromthetwolaboratoriesshouldbecomparedusing
a statistical test for unpaired data, at a probability level chosen
prior to the testing series. If a bias is found, either its cause
1
must be found and corrected, or future test results must be
ThistestmethodisunderthejurisdictionofASTMCommitteeD13onTextiles
and is the direct responsibility of Subcommittee D13.21 on Pile Floor Coverings.
adjusted in consideration of the known bias.
Current edition approved Jan. 1, 2021. Published January 2021. Originally
approved in 1998. Last previous edition approved in 2012 as D6283–12. DOI:
6. Apparatus
10.1520/D6283-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1 Grooved Specimen Holders—The holder shall be of a
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
length at least 10% longer than the longest tuft element to be
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. measured.A4 in. (10
...

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: D6283 − 12 D6283 − 21
Standard Test Method for
1
Tuft Element Length of Uncoated Pile Yarn Floor Coverings
This standard is issued under the fixed designation D6283; 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 tuft length and pile yarn length of uncoated pile floor coverings.
1.2 Usually the tuft elements measured as directed in this test method will each be bound at only one binding site, but this test
method also may be used for tuft elements bound at more than one binding site, provided that every tuft element measured is bound
at the same number of binding sites.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.4 This practicestandard 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 practicestandard to establish appropriate safety safety, health, and healthenvironmental practices
and determine the applicability of regulatory limitations prior to use.
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.
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)
D5684 Terminology Relating to Pile Floor Coverings
3. Terminology
3.1 For definitions of terms relating to Pile Floor Coverings, D13.21, refer to Terminology D5684.
3.1.1 The following terms are relevant to this standard: carpet, cut pile yarn floor covering, finished, finished pile yarn floor
covering, floor covering, loop pile yarn floor covering, pile, pile yarn floor covering, textile floor covering, tuft, tuft element, tuft
leg, tuft length, tufted fabric.
1
This test method is under the jurisdiction of ASTM Committee D13 on Textiles and is the direct responsibility of Subcommittee D13.21 on Pile Floor Coverings.
Current edition approved Feb. 1, 2012Jan. 1, 2021. Published March 2012January 2021. Originally approved in 1998. Last previous edition approved in 20052012 as
D6283–05.D6283–12. DOI: 10.1520/D6283-12.10.1520/D6283-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D6283 − 21
3.2 For definitions of other terms related to textiles, refer to Terminology D123.
4. Summary of Test Method
4.1 The individual tuft elements of like character (cut or loop, and height) are removed from the test sample and placed, one at
a time, in a grooved holder that maintains the tuft fibers in a straight line while the length of the tuft element is measured with
a graduated scale and a magnifying glass.
4.2 In loop pile yarn floor covering, adjacent elements are first separated by cutting the connecting loops at the midpoint of the
bend with sharp scissors before the tuft elements are withdrawn from the backing fabric.
5. Significance and Use
5.1 The determination of the tuft length of pile yarn floor covering is useful in quality and cost control during the manufacture
of pile yarn floor covering. Both appearance and performance can be affected by changes in this characteristic.
5.2 In case there are disputable differences between reported test results for two or more laboratories, comparative tests should
be performed to determine if there is a statistical bias between them, using competent statistical assistance. At a minimum, test
samples should be
...