Standard Test Method for Determination of Resistance of Leather to Bleeding

SCOPE
1.1 This test method covers the determination of whether leather bleeds (exudes coloring matter) when in intimate contact with wet surfaces, as indicated by staining produced on wet cloth in contact with the leather. 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

Status
Historical
Publication Date
09-Sep-2000
Technical Committee
Drafting Committee
Current Stage
Ref Project

Relations

Buy Standard

Standard
ASTM D6012-00 - Standard Test Method for Determination of Resistance of Leather to Bleeding
English language
2 pages
sale 15% off
Preview
sale 15% off
Preview

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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.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 6012 – 00
Standard Test Method for
Determination of Resistance of Leather to Bleeding
This standard is issued under the fixed designation D 6012; 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 added has been found suitable. The plate and jar may be held
together by a suitable cement or pressure-sensitive adhesive
1.1 This test method covers the determination of whether
tape.)
leather bleeds (exudes coloring matter) when in intimate
5.2 Container, flat-bottomed, heat-resistant plastic or other
contact with wet surfaces, as indicated by staining produced on
similar material with cover of sufficient size to accommodate a
wet cloth in contact with the leather. This test method does not
maximum of 15 specimens. A container 12 in. (300 mm) long,
apply to wet blue.
9 in. (230 mm) wide and 4 in. (100 mm) high has been found
1.2 The values stated in inch-pound units are to be regarded
suitable.
as the standard. The values given in parentheses are for
5.3 Forced Circulating-Air Oven, capable of maintaining
information only.
the required temperature of 38 6 2°C (100.4 6 3.6°F).
1.3 This standard does not purport to address all of the
5.4 Balance, single beam or high speed.
safety concerns, if any, associated with its use. It is the
5.5 Bleached Cotton Sheeting, 2-in. (51.6-mm) squares.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
6. Test Specimen
bility of regulatory limitations prior to use.
6.1 The specimen shall be a square of leather 1.0 by 1.0 in.
2. Referenced Documents (25 by 25 mm).
6.2 Number of Determinations—Unless otherwise specified
2.1 ASTM Standards:
in the material specification, one specimen from each sample
D 1610 Practice for Conditioning Leather and Leather
3 unit shall be tested.
Products for Testing
7. Procedure
3. Terminology
7.1 Bring the leather specimen and the color transfer pad
3.1 Definitions of Terms Specific to This Standard:
made of 4 layers of cotton sheeting to moisture equilibrium in
3.1.1 bleeding—the transfer of color from a finished leather
accordance with standard atmospheric conditions (see Practice
sample onto or into another medium.
D 1610). Weigh the conditioned pad to the nearest 0.05 g. After
4. Significance and Use weighing, wet the pad with enough distilled water to double the
weight of the conditioned pad.
4.1 Bleed resistance is considered to be an important char-
acteristic in leather used to make lined and unlined items that
NOTE 1—The dry weight of the conditioned pad is usually 1.0 to 1.1 g,
may come in contact with water.
and the weight of the wet pad is usually 2.0 to 2.2 g.
If necessary, remove excess water from the pad in order to
5. Apparatus
attain the proper weight. Place the wet pad in the bottom of the
5.1 One or More Assemblies, consisting of a flat glass or
plastic container, and place the leather specimen approximately
plastic square, and same size as transfer pad with a suitable
in the center of the pad. Unless otherwise specified, the grain
weight placed on top of the square. The combined weight shall
side of the leather shall be in contact with the pad. Immediately
be 100 6 5 g. (An assembly consisting of a plastic or glass
place the load assembly on top of the specimen. Care should be
plate and a 1 fluid oz (29 cc) plastic or glass jar with plastic lid
taken to ensure the plastic or glass square portion of the load
to which the appropriate amount of lead shot or steel balls is
assembly completely covers the specimen and transfer pad.
Cover the container and place on a shelf in the circulating-air
oven at 38 6 2°C (100.46 3.6°F) for 6 h. At the end of the
This test method is under the jurisdiction of ASTM Committee D31 on Leather
and is the direct responsibility of Subcommittee D31.04 on Apparel a
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.