ASTM D5848-05
(Test Method)Standard Test Method for Mass Per Unit Area of Pile Yarn Floor Coverings
Standard Test Method for Mass Per Unit Area of Pile Yarn Floor Coverings
SIGNIFICANCE AND USE
The determination of the mass per unit area of pile yarn floor covering is useful in quality and cost control during the manufacture of pile floor covering. Both appearance and performance may be affected by changes in mass per unit area.
In case of a dispute arising from differences in reported test results when using this test method for acceptance testing of commercial shipments, the purchaser and supplier should conduct comparison testing to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum the two parties should take a group of test specimens that are as homogeneous as possible and that are from a lot of material of the type in question. The test specimens should then be randomly assigned to each laboratory for testing. The average results from the two laboratories should be compared using Student’t-test for unpaired data and an acceptable probability level chosen by the two parties prior to testing. If a bias is found, either its cause must be found and corrected or the purchaser and supplier must agree to interpret future test results with consideration to the known bias.
SCOPE
1.1 This test method covers the measurement of mass per unit area of machine-made woven, knitted, and tufted pile yarn floor covering both before and after an adhesive-back coating application.
1.2 This test method encompasses three techniques for determination of mass per unit area as applicable:
1.2.1 Section , for determining total mass per unit area, applies to both coated and uncoated (unfinished) pile floor coverings.
1.2.2 Section , for determining component mass per unit area, applies only to uncoated (unfinished) pile yarn floor coverings, and
1.2.3 Section , for determining pile yarn mass per unit area, applies only to back-coated, or finished, pile yarn floor coverings.
1.3 Determination of mass per unit area of pile yarn floor coverings was previously contained within Test Methods D 418. For user convenience, Subcommittee D 13.21 subdivided Test Methods D 418 into separate standards, of which this test method is one.
1.4 The values stated in SI units are to be regarded as standard for all measurements. The inch-pound units given in parentheses are provided for information only.
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. Specific precautionary statements are given in .
General Information
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Standards Content (Sample)
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Designation:D 5848–05
Standard Test Method for
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Mass Per Unit Area of Pile Yarn Floor Coverings
This standard is issued under the fixed designation D 5848; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope D 418 Methods of Testing Pile Yarn Floor Covering Con-
struction
1.1 This test method covers the measurement of mass per
D 1193 Specification for Reagent Water
unit area of machine-made woven, knitted, and tufted pile yarn
D 1909 Table of Commercial Moisture Regains for Textile
floor covering both before and after an adhesive-back coating
Fibers
application.
D 5684 Terminology Relating to Pile Floor Coverings
1.2 This test method encompasses three techniques for
E 122 Practice for Choice of Sample Size to Estimate a
determination of mass per unit area as applicable:
Measure of Quality for a Lot or Process
1.2.1 Section 1.3, for determining total mass per unit area,
applies to both coated and uncoated (unfinished) pile floor
3. Terminology
coverings.
3.1 FordefinitionsoftermsrelatingtoPileFloorCoverings,
1.2.2 Section 1.4, for determining component mass per unit
D13.21, refer to Terminology D 5684.
area, applies only to uncoated (unfinished) pile yarn floor
3.1.1 Thefollowingtermsarerelevanttothisstandard:back
coverings, and
coating, backing, backing fabric, binding sites, buried pile
1.2.3 Section 1.5, for determining pile yarn mass per unit
yarn, carpet, components, extractable matter, finished, finished
area, applies only to back-coated, or finished, pile yarn floor
pile yarn floor covering, floor covering, multilevel pile, pile,
coverings.
pile yarn floor covering, pile yarn mass, pitch, primary back-
1.3 Determination of mass per unit area of pile yarn floor
ing, secondary backing, stubble, textile floor covering, total
coverings was previously contained within Test Methods
mass, tufted fabric.
D 418. For user convenience, Subcommittee D 13.21 subdi-
3.2 For all other terminology related to textiles, refer to
vided Test Methods D 418 into separate standards, of which
Terminology D 123.
this test method is one.
1.4 The values stated in SI units are to be regarded as
4. Significance and Use
standard for all measurements. The inch-pound units given in
4.1 The determination of the mass per unit area of pile yarn
parentheses are provided for information only.
floor covering is useful in quality and cost control during the
1.5 This standard does not purport to address all of the
manufacture of pile floor covering. Both appearance and
safety concerns, if any, associated with its use. It is the
performance may be affected by changes in mass per unit area.
responsibility of the user of this standard to establish appro-
4.2 In case of a dispute arising from differences in reported
priate safety and health practices and determine the applica-
test results when using this test method for acceptance testing
bility of regulatory limitations prior to use. Specific precau-
of commercial shipments, the purchaser and supplier should
tionary statements are given in 9.5.
conduct comparison testing to determine if there is a statistical
2. Referenced Documents bias between their laboratories. Competent statistical assis-
2 tance is recommended for the investigation of bias. As a
2.1 ASTM Standards:
minimum the two parties should take a group of test specimens
D 123 Terminology Relating to Textile Materials
that are as homogeneous as possible and that are from a lot of
materialofthetypeinquestion.Thetestspecimensshouldthen
be randomly assigned to each laboratory for testing. The
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This test method is under the jurisdiction ofASTM Committee D13 onTextiles
average results from the two laboratories should be compared
and is the direct responsibility of Subcommittee D 13.21 on Pile Floor Coverings.
using Student’s t-test for unpaired data and an acceptable
Current edition approved March 1, 2005. Published April 2005. Originally
approved in 1995. Last previous edition approved in 1998 as D 5848 – 98.
probability level chosen by the two parties prior to testing. If a
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
bias is found, either its cause must be found and corrected or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the purchaser and supplier must agree to interpret future test
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. results with consideration to the known bias.
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