ASTM D6859-11
(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
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.
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).
Note 1—Determination of pile thickness of finished level pile yarn floor coverings was previously contained within Test Methods . 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D6859 − 11
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
NOTE 1—Determination of pile thickness of finished level pile yarn
Terminology D123.
floor coverings was previously contained within Test Methods D418. For
user convenience, Subcommittee D13.21 subdivided Test Methods D418
4. Summary of Test Method
into separate standards of which this test method is one.
4.1 The total thickness of an unsheared strip specimen is
1.3 The values stated in inch-pound units are to be regarded
measured as the distance between two parallel plates exerting
as standard. The values given in parentheses are mathematical
a specified pressure on the test specimen. The pile yarn of the
conversions to SI units that are provided for information only
strip specimen is sheared down to a stubble. The backing
and are not considered standard.
thickness of the sheared strip specimen is measured as the
1.4 This standard does not purport to address all of the
distance between two parallel plates exerting a different speci-
safety concerns, if any, associated with its use. It is the
fied pressure on the sheared strip specimen. The difference
responsibility of the user of this standard to establish appro-
between the two measurements is the pile thickness.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 5. Significance and Use
5.1 The determination of pile thickness of level pile yarn
2. Referenced Documents
floor covering is useful in quality and cost control during the
2
2.1 ASTM Standards:
manufacture of pile yarn floor covering. The appearance and
D123 Terminology Relating to Textiles
performance may be affected by changes in pile thickness of
D418 Test Method for Testing Pile Yarn Floor Covering
pile yarn floor coverings. This test method is considered
3
Construction (Withdrawn 1998)
satisfactory for acceptance testing of commercial shipments
D1776 Practice for Conditioning and Testing Textiles
because current estimates of between laboratory precision are
D5684 Terminology Relating to Pile Floor Coverings
acceptable, and this test method is commonly used in the trade
D5823 Test Method for Tuft Height of Pile Floor Coverings
for acceptance testing.
E122 Practice for Calculating Sample Size to Estimate,With
5.2 If there are differences of practical significance between
Specified Precision, the Average for a Characteristic of a
reported test results for two laboratories (or more), compara-
Lot or Process
tive tests should be performed to determine if there is a
1 statistical bias between them, using competent statistical assis-
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
and is the direct responsibility of Subcommittee D13.21 on Pile Floor Coverings.
tance. As a minimum, use the samples for such comparative
Current edition approved Aug. 1, 2011. Published October 2011. Originally
tests that are as homogenous as possible, drawn from the same
approved in 2003. Last previous edition approved in 2005 as D6859–05. DOI:
lot of material as the samples that resulted in disparate results
10.1520/D6859-11.
2
during initial testing and randomly assigned in equal numbers
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
to each laboratory. The test results from the laboratories
Standards volume information, refer to the standard’s Document Summary page on
involved should be compared using a statistical test for
the ASTM website.
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...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:D6859–05 Designation:D6859–11
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.
1.2This test method is applicable only to finished level loop and cut pile constructions with tuft heights less than 6 mm (0.25
in.).
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
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 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
D418 Test Methods of Testing Pile Yarn Floor Covering Construction
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.
3.2 For all other terminology related to textiles, refer to Terminology D123.
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
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.
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 MarchAug. 1, 2005.2011. Published April 2005.October 2011. Originally approved in 2003. Last previous edition approved in 20032005 as
D6859–03.D6859–05. DOI: 10.1520/D6859-05.10.1520/D6859-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
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.
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D6859–11
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
manufactureofpileyarnfloorcovering.Theappearanceandperformancemaybeaffectedbychangesinpilethicknessofpileyarn
floor coverings. This test method is considered satisfactory for acceptance testing of commercial shipments because current
estimatesofbetweenlaboratoryprecisionareacceptable,andthistestmethodiscommonlyusedinthetradeforacceptancetesting.
5.2 If there
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