ASTM D7570-17

Standard Test Method for Evaluation of Dimensional Stability of Pile Yarn Floor Covering

SIGNIFICANCE AND USE
5.1 The determination of dimensional change of pile yarn floor covering is useful in quality and cost control during manufacture of pile yarn floor covering. The appearance and performance may be affected by the changes in the dimensions of pile yarn floor covering. This test method is considered satisfactory for acceptance testing of commercial shipment because current estimates of between laboratory precision are acceptable, and this 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 dimensional changes in the lengthwise and width-wise direction and distortion likely to occur when pile floor coverings are exposed to various conditions of moisture and heat. This method is applicable to all pile floor coverings including carpet module form.  
1.2 This method is applicable to machine made pile yarn floor covering.  
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversion 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.

General Information

• Status: Historical
• Publication Date: 28-Feb-2017
• ICS: 97.150 - Floor coverings
• Technical Committee: D13 - Textiles
• Drafting Committee: D13.21 - Pile Floor Coverings

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: D7570 − 17
Standard Test Method for
Evaluation of Dimensional Stability of Pile Yarn Floor
1
Covering
This standard is issued under the fixed designation D7570; 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 3.2 The following terms are relevant to this standard:
backing, carpet, dimensional stability, cut pile yarn floor
1.1 This test method covers the determination of dimen-
covering, finished pile yarn floor covering, floor covering,
sional changes in the lengthwise and width-wise direction and
lengthwise direction, pile yarn floor covering, textile floor
distortionlikelytooccurwhenpilefloorcoveringsareexposed
covering, tufted fabric, widthwise direction
to various conditions of moisture and heat. This method is
applicable to all pile floor coverings including carpet module
3.3 For definitions of other terms related to textiles, refer to
form.
Terminology D123.
1.2 This method is applicable to machine made pile yarn
4. Summary of Test Method
floor covering.
4.1 This test method describes the dimensional stability of
1.3 The values stated in inch-pound units are to be regarded
machine made pile yarn floor coverings when subjected to
as standard. The values given in parentheses are mathematical
heat, water and various atmospheric conditions. The dimen-
conversion to SI units that are provided for information only
sions of the specimen are measured in the original state and
and are not considered standard.
after each stage of conditioning in the lengthwise and width-
1.4 This standard does not purport to address all of the
wise directions. The change in the dimensions are determined
safety concerns, if any, associated with its use. It is the
and reported to the nearest .001 in. (.03 mm).
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Significance and Use
bility of regulatory limitations prior to use.
5.1 The determination of dimensional change of pile yarn
2. Referenced Documents
floor covering is useful in quality and cost control during
2
manufacture of pile yarn floor covering. The appearance and
2.1 ASTM Standards:
performance may be affected by the changes in the dimensions
D123 Terminology Relating to Textiles
of pile yarn floor covering. This test method is considered
D1776 Practice for Conditioning and Testing Textiles
D5684 Terminology Relating to Pile Floor Coverings satisfactory for acceptance testing of commercial shipment
because current estimates of between laboratory precision are
E177 Practice for Use of the Terms Precision and Bias in
ASTM Test Methods acceptable, and this method is commonly used in the trade for
acceptance testing.
E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
5.2 If there are differences of practical significance between
reported test results for two laboratories (or more), compara-
3. Terminology
tive tests should be performed to determine if there is a
3.1 For all terminology relating to D13.21, Pile Yarn Floor
statistical bias between them using competent statistical assis-
Coverings, refer to Terminology D5684.
tance. 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
1
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
during initial testing and randomly assigned in equal numbers
and is the direct responsibility of Subcommittee D13.21 on Pile Floor Coverings.
to each laboratory. The test results from the laboratories
Current edition approved March 1, 2017. Published March 2017. Originally
involved should be compared using a statistical test for
approved in 2009. Last previous edition approved in 2009 as D7570–09. DOI:
10.1520/D7570-17.
unpaired data, a probability level chosen prior to the testing
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
series. If a bias is found either its cause must be found and
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
corrected, or future test results for that material must be
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. adjusted in consideration of the known bias.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7570 − 17
6. Apparatus to a national standard. Make any adjustments to the equipment
to assure ac
...

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: D7570 − 09 D7570 − 17
Standard Test Method for
Evaluation of Dimensional Stability of Pile Yarn Floor
1
Covering
This standard is issued under the fixed designation D7570; 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 dimensional changes in the lengthwise and widthwisewidth-wise direction and
distortion likely to occur when pile floor coverings are exposed to various conditions of moisture and heat. This method is
applicable to all pile floor coverings including carpet module form.
1.2 This method is applicable to machine made pile yarn floor covering.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversion to SI units that are provededprovided 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
D1776 Practice for Conditioning and Testing Textiles
D5684 Terminology Relating to Pile Floor Coverings
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1 For all terminology relating to D13.21, Pile Yarn Floor Coverings, refer to Terminology D5684.
3.2 The following terms are relevant to this standard: backing, carpet, dimensional stability, cut pile yarn floor covering, finished
pile yarn floor covering, floor covering, lengthwise direction, pile yarn floor covering, textile floor covering, tufted fabric,
widthwise direction
3.3 For definitions of other terms related to textiles, refer to Terminology D123.
4. Summary of Test Method
4.1 This test method describes the dimensional stability of machine made pile yarn floor coverings when subjected to heat, water
and various atmospheric conditions. The dimensions of the specimen are measured in the original state and after each stage of
conditioning in the lengthwise and widthwisewidth-wise directions. The change in the dimensions are determined and reported to
the nearest .001 in. (.03 mm).
5. Significance and Use
5.1 The determination of dimensional change of pile yarn floor covering is useful in quality and cost control during manufacture
of pile yarn floor covering. The appearance and performance may be affected by the changes in the dimensions of pile yarn floor
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 Sept. 1, 2009March 1, 2017. Published February 2010March 2017. Originally approved in 2009. Last previous edition approved in 2009 as
D7570–09. DOI: 10.1520/D7570-09.10.1520/D7570-17.
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

---------------------- Page: 1 ----------------------
D7570 − 17
covering. This test method is considered satisfactory for acceptance testing of commercial shipment because current estimates of
between laboratory precision are acceptable, and this 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
...