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ASTM D6119-97

(Practice)

Standard Practice for Creating Surface Appearance Changes in Pile Yarn Floor Covering from Foot Traffic

Standard Practice for Creating Surface Appearance Changes in Pile Yarn Floor Covering from Foot Traffic

SCOPE
1.1 This practice covers the trafficking of pile yarn floor coverings in a laboratory in order to effect a change in surface appearance as a result of exposure to foot traffic under controlled conditions. A separate test method covers the assessment of surface appearance change using the CRI Reference Scales.

General Information

Status
Historical
Publication Date
31-Dec-1996
ICS
97.150 - Floor coverings
Technical Committee
D13 - Textiles
Drafting Committee
D13.21 - Pile Floor Coverings
Current Stage
Ref Project

Relations

Replaced By
ASTM D6119-03 - Standard Practice for Creating Surface Appearance Changes in Pile Yarn Floor Covering from Foot Traffic
Effective Date
10-Jan-2003
Referred By
ASTM D6719-22e1 - Standard Guide for Standard Test Methods and Practices for Evaluating Pile Yarn Floor Covering
Effective Date
01-Jan-1997
Referred By
ASTM D7330-22 - Standard Test Method for Assessment of Surface Appearance Change in Pile Floor Coverings Using Standard Reference Scales
Effective Date
01-Jan-1997
Referred By
ASTM D5684-19a - Standard Terminology Relating to Pile Floor Coverings
Effective Date
01-Jan-1997

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ASTM D6119-97 - Standard Practice for Creating Surface Appearance Changes in Pile Yarn Floor Covering from Foot TrafficASTM D6119-97 - Standard Practice for Creating Surface Appearance Changes in Pile Yarn Floor Covering from Foot Traffic
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ASTM D6119-97 - Standard Practice for Creating Surface Appearance Changes in Pile Yarn Floor Covering from Foot Traffic
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 6119 – 97
Standard Practice for
Creating Surface Appearance Changes in Pile Yarn Floor
Covering from Foot Traffic
This standard is issued under the fixed designation D 6119; 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 3.1.1 change in surface appearance, n—for pile yarn floor
coverings, the cumulative change in surface appearance be-
1.1 This practice covers the trafficking of pile yarn floor
tween unexposed and exposed specimens due to crushing, loss
coverings in a laboratory in order to effect a change in surface
of tuft definition, and matting.
appearance as a result of exposure to foot traffic under
3.1.2 foot traffıc units, n—for pile yarn floor coverings, the
controlled conditions. A separate test method covers the
number of passes by human walkers over a specific group of
assessment of surface appearance change using the CRI
specimens.
Reference Scales.
3.1.2.1 Discussion—Foot traffic units should not be taken as
1.2 This practice is applicable to most changes in surface
the actual number of times each specimen is stepped on, but
appearance observed in all types of carpet that are intended for
rather as the number of times that persons pass a designated
residential or commercial use. It eliminates change in appear-
spot on the walking course.
ance associated with soiling by focusing on appearance change
3.1.3 For definitions of other terms relating to pile yarn floor
due to matting, flattening, or change in pile fiber configuration.
coverings, refer to Terminology D 5684. For definitions of
Although “pile reversal” or “watermarking” is occasionally
other textile terms used in this test method, refer to Terminol-
visible, this practice is not a reliable method for producing this
ogy D 123.
phenomenon.
1.3 This practice may be used by mutual agreement between
4. Summary of Practice
the purchaser and supplier to set purchasing specifications.
4.1 Specimens are exposed to a specified number of foot
1.4 The values stated in SI units are to be regarded as the
traffics under controlled conditions.
standard. The inch-pound units given in parentheses are for
information only.
5. Significance and Use
1.5 This standard does not purport to address all of the
5.1 By exposure to sufficient traffic, this practice can be
safety concerns, if any, associated with its use. It is the
applied to any pile yarn floor covering which undergoes
responsibility of the user of this standard to establish appro-
changes in surface appearance.
priate safety and health practices and determine the applica-
5.1.1 This practice does not simulate surface appearance
bility of regulatory limitations prior to use. Specific precau-
changes due to soiling, pivoting, or rolling traffic, or traffic on
tionary statements are given in Section 7.
stairs.
2. Referenced Documents
6. Apparatus
2.1 ASTM Standards:
2 6.1 Area for Foot Traffıc—A room that meets the following
D 123 Terminology Related to Textiles
3 conditions:
D 5684 Terminology Relating to Pile Yarn Floor Coverings
6.1.1 The floor must be level, rigid, and free of high and low
2.2 TM-101 CRI Technical Bulletin:
areas. Tile, concrete, or wood are satisfactory. This area should
Assessment of Carpet Surface Appearance Change Using
4 be kept free of pedestrian traffic other than the designated
CRI Reference Scales
walkers.
3. Terminology 6.1.2 The length of the test area shall be adequate for the
specimens plus the carpet walk-off areas at both ends of each
3.1 Definitions:
row of specimens. These areas are necessary to align the
walkers to avoid twisting motion while stepping on the
Precision and Bias This practice is under the jurisdiction of ASTM Committee
specimens, and shall be a minimum of2m(2 yards) long.
D-13 on Textiles and is the direct responsibility of Subcommittee D13.21 on Pile
6.1.3 The width of the test area shall be adequate to layout
Floor Coverings.
Current edition approved May 10, 1997. Published September 1997. a pattern with an odd number of lanes of specimens that require
Annual Book of ASTM Standards, Vol 07.01.
the walkers to automatically reverse their direction with each
Annual Book of ASTM Standards, Vol 07.02.
pass through the course. See Fig. 1 for typical traffic pattern.
Available from CRI, P.O. Box 2048, Dalton, GA 30722.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D6119
FIG. 1 Typical Walking Test Area
6.1.4 Physical Barriers, such as pylons, are suggested to interfering with the progress of each oth
...

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5.1.1 This practice does not simulate surface appearance changes due to soiling, pivoting, or rolling traffic, or traffic on stairs.
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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.
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5.1 The determination of pile thickness of multilevel 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 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.  
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Note 1: Determination of pile thickness of multilevel pile yarn floor coverings was previously contained within Test Method D418. For user convenience, Subcommittee D13.21 subdivided Test Method D418 into separate standards of which this test method is one.  
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5.1.1 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 statistical bias between them using competent statistical assistance. As a minimum, use test samples for such comparative tests that are as homogeneous as possible, drawn from the same lot of material as the samples that resulted in the disparate results during initial testing, and that are randomly assigned in equal numbers to each laboratory for testing. The test results from the laboratories should be compared using 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 for that material must be adjusted in consideration of the known bias.
SCOPE
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