ASTM D6859-18
(Test Method)Standard Test Method for Pile Thickness of Finished Level Pile Yarn Floor Coverings
Standard Test Method for Pile Thickness of Finished Level Pile Yarn Floor Coverings
SIGNIFICANCE AND USE
5.1 The determination of pile thickness of level pile yarn floor covering is useful in quality and cost control during the manufacture of pile yarn floor covering. The appearance and performance may be affected by changes in pile thickness of pile yarn floor coverings. This test method is considered satisfactory for acceptance testing of commercial shipments because current estimates of between laboratory precision are acceptable, and this test method is commonly used in the trade for acceptance testing.
5.2 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 that are as homogenous 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.
SCOPE
1.1 This test method covers the determination of pile thickness of finished level pile yarn floor covering using a thickness measuring instrument having a stationary surface (platen), a circular pressure foot under specified force, and capable of being moved vertically above the platen.
1.2 This test method is applicable only to finished level loop, cutpile and cut & loop constructions with tuft heights less than 0.25 in. (6 mm).
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.
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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: D6859 − 18
Standard Test Method for
1
Pile Thickness of Finished Level Pile Yarn Floor Coverings
This standard is issued under the fixed designation D6859; 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
1.1 This test method covers the determination of pile 3.1 For definitions of terms relating to Pile Floor Coverings,
thickness of finished level pile yarn floor covering using a D13.21, refer to Terminology D5684. See also Annex A1.
thickness measuring instrument having a stationary surface 3.1.1 The following terms are relevant to this standard:
(platen), a circular pressure foot under specified force, and carpet, finished, finished pile yarn floor covering, floor
capable of being moved vertically above the platen. covering, pile, pile thickness, pile yarn floor covering, pitch.
primary backing, shorn pile, stubble, stubble height, textile
1.2 This test method is applicable only to finished level
floor covering, tufted fabric.
loop,cutpileandcut&loopconstructionswithtuftheightsless
than 0.25 in. (6 mm). 3.2 For all other terminology related to textiles, refer to
Terminology D123.
1.3 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
4. Summary of Test Method
conversions to SI units that are provided for information only
4.1 The total thickness of an unsheared strip specimen is
and are not considered standard.
measured as the distance between two parallel plates exerting
1.4 This standard does not purport to address all of the
a specified pressure on the test specimen. The pile yarn of the
safety concerns, if any, associated with its use. It is the
strip specimen is sheared down to a stubble. The backing
responsibility of the user of this standard to establish appro-
thickness of the sheared strip specimen is measured as the
priate safety, health, and environmental practices and deter-
distance between two parallel plates exerting a different speci-
mine the applicability of regulatory limitations prior to use.
fied pressure on the sheared strip specimen. The difference
1.5 This international standard was developed in accor-
between the two measurements is the pile thickness.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
5. Significance and Use
Development of International Standards, Guides and Recom-
5.1 The determination of pile thickness of level pile yarn
mendations issued by the World Trade Organization Technical
floor covering is useful in quality and cost control during the
Barriers to Trade (TBT) Committee.
manufacture of pile yarn floor covering. The appearance and
performance may be affected by changes in pile thickness of
2. Referenced Documents
pile yarn floor coverings. This test method is considered
2
2.1 ASTM Standards:
satisfactory for acceptance testing of commercial shipments
D123 Terminology Relating to Textiles
because current estimates of between laboratory precision are
D1776 Practice for Conditioning and Testing Textiles
acceptable, and this test method is commonly used in the trade
D5684 Terminology Relating to Pile Floor Coverings
for acceptance testing.
D5823 Test Method for Tuft Height of Pile Floor Coverings
5.2 If there are differences of practical significance between
E122 Practice for Calculating Sample Size to Estimate,With
reported test results for two laboratories (or more), compara-
Specified Precision, the Average for a Characteristic of a
tive tests should be performed to determine if there is a
Lot or Process
statistical bias between them, using competent statistical assis-
tance. As a minimum, use the samples for such comparative
1
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
tests that are as homogenous as possible, drawn from the same
and is the direct responsibility of Subcommittee D13.21 on Pile Floor Coverings.
lot of material as the samples that resulted in disparate results
Current edition approved July 1, 2018. Published August 2018. Originally
during initial testing and randomly assigned in equal numbers
approved in 2003. Last previous edition approved in 2011 as D6859–11. DOI:
10.1520/D6859-18.
to each laboratory. The test results from the laboratories
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
involved should be compared using a statistical test for
contact ASTM Customer Servi
...
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: D6859 − 11 D6859 − 18
Standard Test Method for
1
Pile Thickness of Finished Level Pile Yarn Floor Coverings
This standard is issued under the fixed designation D6859; 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 determination of pile thickness of finished level pile yarn floor covering using a thickness
measuring instrument having a stationary surface (platen), a circular pressure foot under specified force, and capable of being
moved vertically above the platen.
1.2 This test method is applicable only to finished level loop, cutpile and cut & loop constructions with tuft heights less than
0.25 in. (6 mm).
NOTE 1—Determination of pile thickness of finished level pile yarn floor coverings was previously contained within Test Methods D418. For user
convenience, Subcommittee D13.21 subdivided Test Methods D418 into separate standards of which this test method is one.
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 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
3
D418 Test Method for Testing Pile Yarn Floor Covering Construction (Withdrawn 1998)
D1776 Practice for Conditioning and Testing Textiles
D5684 Terminology Relating to Pile Floor Coverings
D5823 Test Method for Tuft Height of Pile Floor Coverings
E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or
Process
3. Terminology
3.1 For definitions of terms relating to Pile Floor Coverings, D13.21, refer to Terminology D5684. See also Annex A1.
3.1.1 The following terms are relevant to this standard: carpet, finished, finished pile yarn floor covering, floor covering, pile,
pile thickness, pile yarn floor covering, pitch. primary backing, shorn pile, stubble, stubble height, textile floor covering, tufted
fabric.
D123.
3.2 For all other terminology related to textiles, refer to Terminology
4. Summary of Test Method
4.1 The total thickness of an unsheared strip specimen is measured as the distance between two parallel plates exerting a
specified pressure on the test specimen. The pile yarn of the strip specimen is sheared down to a stubble. The backing thickness
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 Aug. 1, 2011July 1, 2018. Published October 2011August 2018. Originally approved in 2003. Last previous edition approved in 20052011 as
D6859–05.–11. DOI: 10.1520/D6859-11.10.1520/D6859-18.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D6859 − 18
of the sheared strip specimen is measured as the distance between two parallel plates exerting a different specified pressure on the
sheared strip specimen. The difference between the two measurements is the pile thickness.
5. Significance and Use
5.1 The determination of pile thickness of level pile yarn floor covering is useful in quality and cost control during the
manufacture of pile yarn floor covering. The appearance and performance may be affected by changes in pile thickness of pile
...
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