1、Designation: D6119 12Standard Practice forCreating Surface Appearance Changes in Pile Yarn FloorCovering from Foot Traffic1This standard is issued under the fixed designation D6119; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, t
2、he year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers the trafficking of pile yarn floorcoverings in a laboratory in order to effect a chang
3、e in surfaceappearance as a result of exposure to foot traffic undercontrolled conditions. A separate test method covers theassessment of surface appearance change using the CRIReference Scales.1.2 This practice is applicable to most changes in surfaceappearance observed in all types of carpet that
4、are intended forresidential or commercial use. It eliminates change in appear-ance associated with soiling by focusing on appearance changedue to matting, flattening, or change in pile fiber configuration.Although “pile reversal” or “watermarking” is occasionallyvisible, this practice is not a relia
5、ble method for producing thisphenomenon.1.3 This practice may be used by mutual agreement betweenthe purchaser and supplier to set purchasing specifications.1.4 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI unit
6、s that are provided for information onlyand are not considered standard.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine t
7、he applica-bility of regulatory limitations prior to use. Specific precau-tionary statements are given in Section 7.2. Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD1776 Practice for Conditioning and Testing TextilesD5684 Terminology Relating to Pile Floor Coverings2.
8、2 TM-101 CRI Technical Bulletin:Assessment of Carpet Surface Appearance Change UsingCRI Reference Scales33. Terminology3.1 For definitions of terms relating to Pile Floor Coverings,D13.21, refer to Terminology D5684.3.1.1 The following terms are relevant to this standard:carpet, change in surface ap
9、pearance, crush, finished, finishedpile yarn floor covering, floor covering, foot traffic units, lossof tuft definition, matting, pile, pile reversal, pile yarn floorcovering, textile floor covering, tufted fabric.3.2 For all other terminology related to textiles, refer toTerminology D123.4. Summary
10、 of Practice4.1 Specimens are exposed to a specified number of foottraffics under controlled conditions.5. Significance and Use5.1 By exposure to sufficient traffic, this practice can beapplied to any pile yarn floor covering which undergoeschanges in surface appearance.5.1.1 This practice does not
11、simulate surface appearancechanges due to soiling, pivoting, or rolling traffic, or traffic onstairs.6. Apparatus6.1 Area for Foot TraffcA room that meets the followingconditions:6.1.1 The floor must be level, rigid, and free of high and lowareas. Tile, concrete, or wood are satisfactory. This area
12、shouldbe kept free of pedestrian traffic other than the designatedwalkers.6.1.2 The length of the test area shall be adequate for thespecimens plus the carpet walk-off areas at both ends of eachrow of specimens. These areas are necessary to align the1This practice is under the jurisdiction ofASTM Co
13、mmittee D13 on Textiles andis the direct responsibility of Subcommittee D13.21 on Pile Floor Coverings.Current edition approved Feb. 1, 2012. Published March 2012. Originallyapproved in 1997. Last previous edition approved in 2005 as D611905. DOI:10.1520/D6119-12.2For referenced ASTM standards, visi
14、t the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from CRI, P.O. Box 2048, Dalton, GA 30722.1Copyright ASTM International, 100 Barr Harb
15、or Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.walkers to avoid twisting motion while stepping on thespecimens, and shall be a minimum of 2 yards (2 m) long.6.1.3 The width of the test area shall be adequate to layouta pattern with an odd number of lanes of specimens that req
16、uirethe walkers to automatically reverse their direction with eachpass through the course. See Fig. 1 for typical traffic pattern.6.1.4 Physical Barriers, such as pylons, are suggested toensure straight-line entry and exit of the test area.6.1.5 Suitable Walk-Off Mats, used to eliminate tracking ofc
17、ontaminants.6.2 Double-Faced, Pressure Sensitive Tape, or other meanswhich will hold the specimens in place and yet permit easyremoval.6.3 Traffc Counting DeviceAn accurate means of count-ing foot traffic units. Photoelectric or hand held manualcounting devices are satisfactory. Install photoelectri
18、c countersat a sufficient height to prevent multiple counting from arm orleg motion. Impact counters which generate multiple signalsfor an individual foot step are not recommended.6.4 Vacuum CleanerDual motor, top-loading, uprightvacuum cleaner with a rotating brush.6.5 Walker PersonnelNo minimum nu
19、mber is required.The number shall be small enough to prevent walkers frominterfering with the progress of each other through the test area.Walking or athletic shoes must be worn by all walkers.7. Hazards7.1 The carpet specimens shall be secured to the floor toavoid a slipping or tripping hazard. Ins
20、pect the specimensperiodically and secure loose specimens immediately.FIG. 1 Typical Walking Test AreaD6119 1228. Test Specimens8.1 Test at least one specimen from the machine directionand one from the cross machine direction. Retain an original(unexposed) specimen for grading comparisons.8.1.1 In c
21、ases where there is a choice of color, select thelighter color specimen as this facilitates rating.8.2 Cut each individual specimen 9 by 22 in. (230 by 560mm). The long dimension is always the width of the designatedwalker path. The specified width of the specimen is necessaryto assure uniform traff
22、ic density from one site to another. Thespecimen length can be varied with no affect on test results.8.3 Marking SpecimenTo orient the carpet specimen withrespect to machine direction, place a distinguishing mark suchas an arrow on the back of the carpet. Place any other requiredidentification on th
23、e back of each specimen before installationin the test area.9. Conditioning9.1 This practice does not require conditioning, as directedin Practice D1776D1776. Specimens need not be conditionedin the standard atmosphere (70F, 65 % RH) for testingtextiles.10. Procedure10.1 Choose a traffic level high
24、enough to produce anoticeable change in surface appearance. 20 000 foot trafficunits is recommended for household applications.10.2 Place the specimens adjacent to one another with the22 in. (560 mm) dimension perpendicular to the traffic flow.10.2.1 Group carpet specimens to minimize thickness vari
25、a-tion from one specimen to another.10.3 Secure the individual specimens in place. Do not useany cushioning material with the specimens, unless the test isspecifically designed to test the effect of a specific cushion.10.4 Walkers shall start at the designated start point andfollow a walk path in ac
26、cordance with the layout in Fig. 1.10.4.1 Walkers shall use a normal walking pace withoutscuffing.10.5 Vacuum all specimens uniformly every 1000 foottraffic units, normally while walkers are resting, and at comple-tion of the exposure.10.5.1 If significant contamination appears in the test area,the
27、source shall be defined and eliminated.10.6 Remove specimens without stacking. Allow all speci-mens to recover for a minimum of 16 h.11. Report11.1 Report the following information:11.1.1 Carpet specimens were exposed in accordance withthis practice,11.1.2 Identify the material or product sampled an
28、d themethod of sampling used,11.1.3 The number of foot traffic units, and11.1.4 Detail any deviations from this practice.12. Keywords12.1 appearance; carpet; foot traffic units; textile floorcoveringASTM International takes no position respecting the validity of any patent rights asserted in connect
29、ion with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsibl
30、e technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful cons
31、ideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 B
32、arr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D6119 123
