1、Designation: D 6012 03Standard Test Method forDetermination of Resistance of Leather to (Bleeding) ColorStain Transfer1This standard is issued under the fixed designation D 6012; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、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.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This test method2covers the
3、determination of whetherleather bleeds (exudes coloring matter) when in intimatecontact with wet surfaces, as indicated by staining produced onwet cloth in contact with the leather. This test method does notapply to wet blue.1.2 The values stated in inch-pound units are to be regardedas the standard
4、. The values given in parentheses are forinformation only.1.3 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 the applica-bil
5、ity of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:D 1610 Practice for Conditioning Leather and LeatherProducts for Testing33. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 bleedingthe transfer of color from a finished leathersample onto or int
6、o another medium.4. Significance and Use4.1 Bleed resistance is considered to be an important char-acteristic in leather used to make lined and unlined items thatmay come in contact with water.5. Apparatus5.1 One or More Assemblies, consisting of a flat glass orplastic square, and same size as trans
7、fer pad with a suitableweight placed on top of the square. The combined weight shallbe 100 6 5 g. (An assembly consisting of a plastic or glassplate and a 1 fluid oz (29 cc) plastic or glass jar with plastic lidto which the appropriate amount of lead shot or steel balls isadded has been found suitab
8、le. The plate and jar may be heldtogether by a suitable cement or pressure-sensitive adhesivetape.)5.2 Container, flat-bottomed, heat-resistant plastic or othersimilar material with cover of sufficient size to accommodate amaximum of 15 specimens. A container 12 in. (300 mm) long,9 in. (230 mm) wide
9、 and 4 in. (100 mm) high has been foundsuitable.5.3 Forced Circulating-Air Oven, capable of maintainingthe required temperature of 38 6 2C (100.4 6 3.6F).5.4 Balance, single beam or high speed.5.5 Bleached Cotton Sheeting,42-in. (51.6-mm) squares.6. Test Specimen6.1 The specimen shall be a square of
10、 leather 1.0 by 1.0 in.(25 by 25 mm).6.2 Number of DeterminationsUnless otherwise specifiedin the material specification, one specimen from each sampleunit shall be tested.7. Procedure7.1 Bring the leather specimen and the color transfer padmade of 4 layers of cotton sheeting to moisture equilibrium
11、 inaccordance with standard atmospheric conditions (see PracticeD 1610). Weigh the conditioned pad to the nearest 0.05 g.Afterweighing, wet the pad with enough distilled water to double theweight of the conditioned pad.NOTE 1The dry weight of the conditioned pad is usually 1.0 to 1.1 g,and the weigh
12、t of the wet pad is usually 2.0 to 2.2 g.If necessary, remove excess water from the pad in order toattain the proper weight. Place the wet pad in the bottom of the1This test method is under the jurisdiction of ASTM Committee D31 on Leatherand is the direct responsibility of Subcommittee D31.04 on Ap
13、parel.Current edition approved May 10, 2003. Published July 2003. Originallyapproved in 1996. Last previous edition approved in 2000 as D 601200.2This test method was developed from Federal Test Method Standard No. 311Method 3021.2 in cooperation with the U.S. Army Natick Research Developmentand Eng
14、ineering Center, Natick, MA, and the Defense Personnel Support CenterDirectorate of Clothing and Textiles, Philadelphia, PA.3Annual Book of ASTM Standards, Vol 15.04.4The sole source of supply of the color transfer cloth known to the committee atthis time is Test Fabrics, Inc., P.O. Box 53, 200 Blac
15、kford Ave., Middlesex, NJ08846. If you are aware of alternative suppliers, please provide this information toASTM Headquarters.Your comments will receive careful consideration at a meetingof the responsible technical committee, which you may attend.1Copyright ASTM International, 100 Barr Harbor Driv
16、e, PO Box C700, West Conshohocken, PA 19428-2959, United States.plastic container, and place the leather specimen approximatelyin the center of the pad. Unless otherwise specified, the grainside of the leather shall be in contact with the pad. Immediatelyplace the load assembly on top of the specime
17、n. Care should betaken to ensure the plastic or glass square portion of the loadassembly completely covers the specimen and transfer pad.Cover the container and place on a shelf in the circulating-airoven at 38 6 2C (100.46 3.6F) for 6 h. At the end of therequired time, take the container from the o
18、ven. Remove thepad and allow it to dry at a temperature of 23 6 2C (73.4 63.6F). Rate the darkest stain on the pad in indirect light bymatching it with the color on the AATCC Chromatic Transfer-ence Scale5that is closest to it in chromaticity and hue.8. Report8.1 Report the staining result according
19、 to the followingexpanded AATCC ratings:Comparison of Test Pad Stain withNumerical AATCC ValuesExpanded AATCCRating ValueStain heavier than 1 0Stain equivalent to 1 1Stain lighter than 1 but heavier than 2 +1Stain equivalent to 2 2Stain lighter than 2 but heavier than 3 +2Stain equivalent to 3 3Stai
20、n lighter than 3 but heavier than 4 +3Stain equivalent to 4 49. Precision and Bias9.1 This test method is adopted from Federal Test StandardNo. 311, Method 3021.2 where it has long been in use and wasapproved for publication before the inclusion of precision andbias statements was mandated. The orig
21、inal interlaboratory testdata are no longer available. The user is cautioned to verify bythe use of reference materials, if available, that the precisionand bias (or reproducibility) of this test method is adequate forthe contemplated use.10. Keywords10.1 bleed resistance; bleeding; leather; migrati
22、onASTM 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 determination of the validity of any such patent rights, and the riskof infringement of such rights, a
23、re 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 reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional stand
24、ardsand 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 feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Commi
25、ttee 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 aboveaddres
26、s or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).5The sole source of supply of the apparatus known to the committee at this timeis AATCC National Headquarters, P.O. Box 12215, Research Triangle Park, NC22709. If you are aware of alternative suppliers, please provide this information toASTM Headquarters.Your comments will receive careful consideration at a meetingof the responsible technical committee,1which you may attend.D6012032
