ASTM D2098-04

Standard Test Method for Dynamic Water Resistance of Shoe Upper Leather by the Dow Corning Leather Tester

SIGNIFICANCE AND USE
This test method is intended to estimate the water resistance of shoe upper leather. The flex imparted to the leather is a magnification of the flex given the vamp of the shoe in actual wear.
Note 1—There is an indication that this test method cannot be used interchangeably for specification purposes with Test Method D 2099.
SCOPE
1.1 This test method covers the determination of the dynamic water resistance of shoe upper leather by means of the Dow Corning Tester. It has been revised to show the state of the art in the equipment used in testing. It is applicable to all types of shoe upper leather. This test method does not apply to wet blue.
1.2 Initial water penetration and water absorption can be measured.
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: 31-Aug-2004
• Technical Committee: D31 - Leather
• Drafting Committee: D31.03 - Footwear

Relations

• Replaces: ASTM D2098-00 - Standard Test Method for Dynamic Water Resistance of Shoe Upper Leather by the Dow Corning Leather Tester
• Effective Date: 01-Sep-2004
• Replaced By: ASTM D2098-04(2008) - Standard Test Method for Dynamic Water Resistance of Shoe Upper Leather by the Dow Corning Leather Tester
• Effective Date: 01-Sep-2008
• Referred By: ASTM D2099-14(2023) - Standard Test Method for Dynamic Water Resistance of Shoe Upper Leather by the Maeser Water Penetration Tester
• Effective Date: 01-Sep-2004
• Referred By: ASTM F1900-98(2017) - Standard Test Method for Water Resistance of Footwear Using a Walking Step Simulator
• Effective Date: 01-Sep-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D2098–04
Standard Test Method for
Dynamic Water Resistance of Shoe Upper Leather by the
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Dow Corning Leather Tester
This standard is issued under the fixed designation D 2098; 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.
This standard has been approved for use by agencies of the Department of Defense.
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1. Scope 4.2 Dow Corning Leather Tester, as shown in Fig. 1, or its
equivalent. The essential features of the machine are as
1.1 This test method covers the determination of the dy-
follows:
namic water resistance of shoe upper leather by means of the
4.2.1 Aspecimen holder made of two vertical clamps. Each
DowCorningTester.Ithasbeenrevisedtoshowthestateofthe
clamp shall have two stainless steel arms (7.5 by 0.5 by 0.5 in.
art in the equipment used in testing. It is applicable to all types
(190.5 by 12.7 by 12.7 mm)), one arm fixed, the other
of shoe upper leather. This test method does not apply to wet
moveable. One clamp shall be mounted on a horizontal
blue.
reciprocating shaft, that is, attached by a connecting link to a
1.2 Initial water penetration and water absorption can be
motor driven eccentric, which turns at 60 r/min. The bottom of
measured.
the clamps shall be in the same horizontal plane. In one
1.3 This standard does not purport to address all of the
rotation of the eccentric, the minimum distance between
safety concerns, if any, associated with its use. It is the
clamps shall be 1.50 6 0.01 in. (38.16 0.25 mm) (inside
responsibility of the user of this standard to establish appro-
measurement)andthemaximumdistancebetweenclamps2.50
priate safety and health practices and determine the applica-
6 0.01 in. (63.5 6 0.25 mm) (inside measurement).
bility of regulatory limitations prior to use.
4.2.2 Water Tank made of stainless steel or other noncorro-
2. Referenced Documents sive material. It shall be of such a size that it can be placed
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around the clamps, and of such a depth that when in position
2.1 ASTM Standards:
for use, the top of the pan is at least 2.5 in. (63.5 mm) above
D 2099 Test Method for DynamicWater Resistance of Shoe
the bottom of the clamps, and the bottom of the pan is at least
Upper Leather by the Maeser Water Penetration Tester
0.5 in. (12.7 mm) below the bottom of the clamps.
3. Significance and Use
4.2.3 Two systems shall be used to record the number of
cycles through which the specimen is flexed. One shall be a
3.1 This test method is intended to estimate the water
mechanical reset counter connected to the movable clamp.The
resistance of shoe upper leather. The flex imparted to the
other system shall be electrical (see Fig. 2). The resistance
leatherisamagnificationoftheflexgiventhevampoftheshoe
across the electrodes shall be 7500 6 500 ohms. The sensing
in actual wear.
electrode shown is inside a leather specimen filled with
NOTE 1—There is an indication that this test method cannot be used
stainless-steel balls. The common electrode is in a salt solution
interchangeably for specification purposes with Test Method D 2099.
which is in continuous contact with the specimen during
flexing. Switch S when manually closed starts an electrical
4. Apparatus
impulse counter actuated by a micro switch, EC, which makes
4.1 Balance, sensitive to 0.01 g.
contact once on each flex. This records the total number of
flexes until initial water penetration. Initial water penetration is
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detected by a current leakage from the high electrode through
This test method is under the jurisdiction ofASTM Committee D31 on Leather
and is the direct responsibility of Subcommittee D31.03 on Footwear. This test
the specimen to the common electrode in the conducting
method was developed in cooperation with the American Leather Chemists Assn.
Current edition approved Sept. 1, 2004. Published September 2004. Originally
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approved in 1962 as D 2098–62T. Last previous edition approved in 2000 as The sole source of supply of the apparatus known to the committee at this time
D 2098–00. is Koehler Instrument Co., 1595 Sycamore Ave., Bohemia, NY 11716. Telephone:
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