ASTM D5053-00
(Test Method)Standard Test Method for Colorfastness of Crocking of Leather
Standard Test Method for Colorfastness of Crocking of Leather
SCOPE
1.1 This test method covers the determination of the degree of color that may be transferred from leather to other surfaces by rubbing under wet (damp) or dry conditions, or both. This test method does not apply to wet blue.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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
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Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.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 5053 – 00
Standard Test Method for
Colorfastness of Crocking of Leather
This standard is issued under the fixed designation D 5053; 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 5. Significance and Use
1.1 This test method covers the determination of the degree 5.1 This test method is intended for use on any type of
of color that may be transferred from leather to other surfaces leather.
by rubbing under wet (damp) or dry conditions, or both. This
6. Apparatus
test method does not apply to wet blue.
4,5
6.1 Apparatus, as specified in AATCC Test Method 8.
1.2 The values stated in inch-pound units are to be regarded
,
5 6
as the standard. The values given in parentheses are for 6.2 Test Cloth, white crock.
5,7
6.3 Test Cloth, blue crock.
information only.
1.3 This standard does not purport to address all of the
7. Sampling, Test Specimens, and Test Units
safety concerns, if any, associated with its use. It is the
7.1 The minimum size of the test specimen shall be 2 by 5
responsibility of the user of this standard to establish appro-
in. (5.1 by 12.7 cm). However, where nondestructive testing of
priate safety and health practices and determine the applica-
skins is desired, the entire skin may be used and tested in any
bility of regulatory limitations prior to use.
portion of its area. (See Practice D 2813 for proper sampling
2. Referenced Documents
area.)
7.2 All specimens shall be conditioned as prescribed in
2.1 ASTM Standards:
D 1517 Terminology Relating to Leather Practice D 1610. Conditioning other than as prescribed shall be
noted in the results.
D 1610 Practice for Conditioning Leather and Leather
Products for Testing
8. Procedure
D 2813 Practice for Sampling Leather for Physical and
8.1 Dry Test—Mount the test specimen flat on the base of
Chemical Tests
the testing machine with its long dimensions in the direction of
2.2 AATCC Methods:
the motion of the finger. Use white cloth for testing colored
AATCC Method 8 Colorfastness to Crocking:
leathers, and use blue cloth for white or light-colored leathers.
AATCC Crockmeter Method
Condition the piece of cloth, 2 in. , for at least2hinthe
AATCC Chromatic Transference Scale or Gray Scale for
standard atmosphere. Then place on the end of the finger with
Staining
the weave of the cloth oblique to the direction of rubbing. Place
3. Terminology
the finger with the cloth cover on the specimen and operate the
machine for ten complete turns of the crank at a rate of one turn
3.1 Definitions—For definitions of colorfastness and crock-
per second. When a comparison is required, test a standard
ing, refer to AATCC Method 8. For other specific leather
terminology, see Terminology D 1517. specimen in the same manner.
8.2 Wet Test—Place a new area of the test specimen and a
4. Summary of Test Method
new piece of cloth on the testing machine as described in 8.1.
4.1 A specimen of the leather sample fastened to the base of Before placing the cloth on the finger, wet it with distilled
a crockmeter is rubbed with white crock test cloth under
controlled conditions. Color transferred to the white cloth is
The sole source of supply of the AATCC crockmeter known to the committee
assessed by a comparison with the AATCC chromatic trans-
at this time is Atlas Electric Devices Company, 4114 North Ravenswood Avenue,
ference scale; an alternative is to use the gray scale for staining Chicago, IL 60613. Telephone: (312) 327–4520.
If you are aware of alternative suppliers, please provide this information to
as suggested in AATCC Method 8.
ASTM Headquarters. Your comments will receive careful consideration at a meeting
of the responsible technical committee, which you may attend.
1 6
This test method is under the jurisdiction of ASTM Committee D31 on Leather The sole source of supply of test cloth known to the committee at this time is
and is the direct responsibility of Subcommittee D31.04 on Apparel and Upho
...
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