1、Designation: D 6119 05Standard Practice forCreating Surface Appearance Changes in Pile Yarn FloorCovering from Foot Traffic1This standard is issued under the fixed designation D 6119; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、 the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 ch
3、ange 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 th
4、at 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 re
5、liable 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 SI units are to be regarded as thestandard. The inch-pound units given in parentheses are forinformation only.1.5 T
6、his 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 the applica-bility of regulatory limitations prior to use. Specific precau-tio
7、nary statements are given in Section 7.2. Referenced Documents2.1 ASTM Standards:2D 123 Terminology Relateing to TextilesD 1776 Practice for Conditioning and Testing TextilesD 5684 Terminology Relating to Pile Yarn Floor Coverings2.2 TM-101 CRI Technical Bulletin:Assessment of Carpet Surface Appeara
8、nce Change UsingCRI Reference Scales33. Terminology3.1 For definitions of terms relating to Pile Floor Coverings,D13.21, refer to Terminology D 5684.3.1.1 The following terms are relevant to this standard:carpet, change in surface appearance, crush, finished, finishedpile yarn floor covering, floor
9、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 D 123.4. Summary of Practice4.1 Specimens are exposed to a specified number of foo
10、ttraffics 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 simulate surface appearancechanges due to soiling, pivoting, or ro
11、lling 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 shouldbe kept free of pedestrian traffic other than the designated
12、walkers.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 Committee D13 on Textiles andis the direct responsibility of Subcomm
13、ittee D13.21 on Pile Floor Coverings.Current edition approved March 1, 2005. Published April 2005. Originallyapproved in 1997. Last previous edition approved in 2003 as D 611903.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org.
14、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 Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.walkers to avoi
15、d twisting motion while stepping on thespecimens, and shall be a minimum of2m(2yards) 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 requirethe walkers to automatically reverse their direction with eachpass through the course.
16、 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 ofcontaminants.6.2 Double-Faced, Pressure Sensitive Tape, or other meanswhich will hold the s
17、pecimens 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 photoelectric countersat a sufficient height to prevent multiple counting from arm orleg motion. Impac
18、t 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 number is required.The number shall be small enough to prevent walkers frominterfering with
19、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. Inspect the specimensperiodically and secure loose specimens immediately.FIG. 1 Typical Walki
20、ng Test AreaD61190528. 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 cases where there is a choice of color, select thelighter color specimen as this facilitates
21、 rating.8.2 Cut each individual specimen 230 by 560 mm (9 by 22in.). The long dimension is always the width of the designatedwalker path. The specified width of the specimen is necessaryto assure uniform traffic density from one site to another. Thespecimen length can be varied with no affect on tes
22、t 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 the back of each specimen before installationin the test area.9. Conditioning9.1 This practic
23、e does not require conditioning, as directedin Practice D 1776. Specimens need not be conditioned in thestandard atmosphere (70F, 65 % RH) for testing textiles.10. Procedure10.1 Choose a traffic level high enough to produce anoticeable change in surface appearance. 20 000 foot trafficunits is recomm
24、ended for household applications.10.2 Place the specimens adjacent to one another with the560 mm (22 in.) dimension perpendicular to the traffic flow.10.2.1 Group carpet specimens to minimize thickness varia-tion from one specimen to another.10.3 Secure the individual specimens in place. Do not usea
25、ny 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 accordance with the layout in Fig. 1.10.4.1 Walkers shall use a normal walking pace withoutscuff
26、ing.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 source shall be defined and eliminated.10.6 Remove specimens without stacking. Allow all speci
27、-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 and themethod of sampling used,11.1.3 The number of foot traffic units, and11.1.4 Detail any dev
28、iations 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 connection with any item mentionedin this standard. Users of this standard are expressly advised that
29、 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 responsible technical committee and must be reviewed every five years andif not revised, either reapprov
30、ed 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 consideration at a meeting of theresponsible technical committee, which you may attend. If you fee
31、l 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 Barr 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).D6119053
