ASTM D7506/D7506M-17(2021)
(Test Method)Standard Test Method for Pocket Reinforcement
Standard Test Method for Pocket Reinforcement
ABSTRACT
This test method employs the grab procedures used to determine localized weakness due to bar-tacking in the pocket areas of all types of garments such as shirts, including the side or back pockets of trousers, pants, or jeans. To test its breaking strength, a specimen of the pocket area shall be mounted centrally in clamps of a constant-rate-of-extension tensile testing machine and a force shall be applied until the specimen breaks. Reports on the test results shall include the mode of failure and the location of where the break occurs.
SCOPE
1.1 This test method utilizes the grab procedures to determine localized weakness due to bar-tacking in the pocket areas of all types of garments. This can be utilized to test bar-tacking in the pockets of shirts, as well as side or back pockets of trousers, pants, or jeans.
1.2 This test method provides the values in both inch-pound and SI units. Inch-pound units is the technically correct name for the customary units used in the United States. SI units is the technically correct name for the system of metric units know as the International System of Units. The values stated in either acceptable metric units or in other units shall be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining in any way.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D7506/D7506M − 17 (Reapproved 2021)
Standard Test Method for
Pocket Reinforcement
This standard is issued under the fixed designation D7506/D7506M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope D5034 TestMethodforBreakingStrengthandElongationof
Textile Fabrics (Grab Test)
1.1 This test method utilizes the grab procedures to deter-
mine localized weakness due to bar-tacking in the pocket areas
3. Terminology
of all types of garments.This can be utilized to test bar-tacking
3.1 Definitions
in the pockets of shirts, as well as side or back pockets of
3.1.1 constant-rate-of-extension tensile testing machine
trousers, pants, or jeans.
(CRE), n—a testing machine in which the rate of increase of
1.2 This test method provides the values in both inch-pound
specimen length is uniform with time.
and SI units. Inch-pound units is the technically correct name
3.1.2 grab test, n—in fabric testing, a tensile test in which
forthecustomaryunitsusedintheUnitedStates.SIunitsisthe
the central part of the width of the specimen is gripped in the
technicallycorrectnameforthesystemofmetricunitsknowas
clamps.
the International System of Units. The values stated in either
acceptable metric units or in other units shall be regarded 3.1.3 tensile test, n—in textiles, a test in which a textile
separately as standard. The values stated in each system may material is stretched in one direction to determine the load
not be exact equivalents; therefore, each system must be used elongation characteristics, in the breaking load, or the breaking
independently of the other, without combining in any way. elongation.
1.3 This standard does not purport to address all of the
3.1.4 For definitions of other terms used in this test method,
safety concerns, if any, associated with its use. It is the
refer to Terminology D123.
responsibility of the user of this standard to establish appro-
4. Summary of Test Method
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
4.1 A specimen of the pocket area with the bar-tacking is
1.4 This international standard was developed in accor-
mounted centrally in clamps of the tensile strength machine
dance with internationally recognized principles on standard-
and a force is applied until the specimen breaks.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
5. Apparatus
mendations issued by the World Trade Organization Technical
5.1 Constant-rate-of-extension (CRE) tensile testing
Barriers to Trade (TBT) Committee.
machine, as used in Test Method D5034, conforming to
Specification D76/D76M.
2. Referenced Documents
5.2 Clamps and jaws, rubber faced or other gripping
2.1 ASTM Standards:
surface—jaw faces must measure 25 mm 6 1 mm [1.0 in. 6
D76/D76M Specification for Tensile Testing Machines for
0.02 in.] wide at least 25 mm [1.0 in.], perpendicular to the
Textiles
direction of the force, and not less than 25 mm nor more than
D123 Terminology Relating to Textiles
50mm[1.0 in.normorethan2.0in.].Theback,orbottom,jaw
D1776/D1776M Practice for Conditioning and Testing Tex-
face of each clamp shall be at least as large as its mate. Use of
tiles
a larger face for the second jaw reduces the problem of front
and back jaw face misalignment.
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
6. Safety Precautions
and is the direct responsibility of Subcommittee D13.54 on Subassemblies.
Current edition approved July 1, 2021. Published August 2021. Originally
6.1 It is the users responsibility to use safe and proper
approved in 2009. Last previous edition approved in 2017 as D7506/D7506M-17.
techniques when handling or using any of the equipment
DOI: 10.1520/D7506_D7506M-17R21.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or mentioned.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.2 Good laboratory practice should be followed. Wear
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. safety glasses in all laboratory test rooms.
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D7506/D7506M − 17 (2021)
FIG. 1 Cutting: Patch Pocket
FIG. 3 C
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