ASTM D7506/D7506M-12

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 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
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: 31-Mar-2012
• ICS: 61.020 - Clothes
• Technical Committee: D13 - Textiles
• Drafting Committee: D13.54 - Subassemblies

Relations

• Replaces: ASTM D7506/D7506M-09 - Standard Test Method for Pocket Reinforcement
• Effective Date: 01-Apr-2012

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D7506/D7506M − 12
Standard Test Method for
1
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 3.1.3 tensile test, n—in textiles, a test in which a textile
material is stretched in one direction to determine the load
1.1 This test method utilizes the grab procedures to deter-
elongation characteristics, in the breaking load, or the breaking
mine localized weakness due to bar-tacking in the pocket areas
elongation.
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 3.1.4 For definitions of other terms used in this test method,
trousers, pants, or jeans. refer to Terminology D123.
1.2 The values stated in either SI units or inch-pound units
4. Summary of Test Method
are to be regarded separately as standard. The values stated in
4.1 A specimen of the pocket area with the bar-tacking is
each system may not be exact equivalents; therefore, each
mounted centrally in clamps of the tensile strength machine
system shall be used independently of the other. Combining
and a force is applied until the specimen breaks.
values from the two systems may result in non-conformance
with the standard.
5. Apparatus
1.3 This standard does not purport to address all of the
5.1 Constant-rate-of-extension (CRE) tensile testing
safety concerns, if any, associated with its use. It is the
machine, as used in Test Method D5034, conforming to
responsibility of the user of this standard to establish appro-
Specification D76.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5.2 Clamps and jaws, rubber faced or other gripping
surface—jaw faces must measure 1.0 6 0.02 in. (25 6 1 mm)
2. Referenced Documents
wide at least 1 in. (25 mm), perpendicular to the direction of
2
2.1 ASTM Standards:
the force, and not less than 25 nor more than 50 mm (1.0 nor
D76 Specification for Tensile Testing Machines for Textiles
morethan2.0in.).Theback,orbottom,jawfaceofeachclamp
D123 Terminology Relating to Textiles
shall be at least as large as its mate. Use of a larger face for the
D1776 Practice for Conditioning and Testing Textiles
second jaw reduces the problem of front and back jaw face
D5034 TestMethodforBreakingStrengthandElongationof
misalignment.
Textile Fabrics (Grab Test)
6. Safety Precuations
3. Terminology
6.1 It is the users responsibility to use safe and proper
3.1 Definitions
techniques when handling or using any of the equipment
3.1.1 constant-rate-of-extension tensile testing machine
mentioned.
(CRE), n—a testing machine in which the rate of increase of
6.2 Good laboratory practice should be followed. Wear
specimen length is uniform with time.
safety glasses in all laboratory test rooms.
3.1.2 grab test, n—in fabric testing, a tensile test in which
the central part of the width of the specimen is gripped in the
7. Sampling, Test Specimens, and Test Units
clamps.
7.1 Cut the garment or the side pockets as shown in Figs.
1-4. If multiple samples are available, cut, if possible, a
1
This test method is under the jurisdiction ofASTM Committee D13 on Textiles minimum of 3 specimens. If not, test an agreed upon number
and is the direct responsibility of Subcommittee D13.54 on Subassemblies.
of samples.
Current edition approved April 1, 2012. Published May 2012. Originally
approved in 2009. Last previous edition approved in 2009 as D7506/D7506M-09.
8. Preparation of Apparatus
DOI: 10.1520/D7506_D7506M-12.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
8.1 Tensile Testing Machine:
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
8.1.1 Prepare the machine according to the manufacturer’s
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. instructions.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7506/D7506M − 12
FIG. 4 Cutting: Side Pocket
FIG. 1 Cutting: Patch Pocket
8.2.2 Make a four-ply sandwich or white tissue paper, two
soft carbon papers placed back to back, and a second white
paper (or fold the paper over the two carbons).
8.2.3 Mount the paper–carbon sandwich and examine the
jaw face imprint of uniformity of the carbon deposition on the
tissue paper.
8.2.4 If the imprint is incomplete or off–size, make appro-
priate adjustments of the clamping gripping system and re-
check
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D7506/D7506M–09 Designation: D7506/D7506M – 12
Standard Test Method for
1
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 (ϵ) indicates an editorial change since the last revision or reapproval.
1. 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 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
D76 Specification for Tensile Testing Machines for Textiles
D123 Terminology Relating to Textiles
D1776 Practice for Conditioning and Testing Textiles
D5034 Test Method for Breaking Strength and Elongation of Textile Fabrics (Grab Test)
3. Terminology
3.1
3.1 Definitions: Definitions
3.1.1 constant-rate-of-extension tensile testing machine (CRE), n—a testing machine in which the rate of increase of specimen
length is uniform with time.
3.1.2 grab test, n—in fabric testing, a tensile test in which the central part of the width of the specimen is gripped in the clamps.
3.1.3 tensile test, n—in textiles, a test in which a textile material is stretched in one direction to determine the load elongation
characteristics, in the breaking load, or the breaking elongation.
3.1.4 For definitions of other terms used in this test method, refer to Terminology D123.
4. Summary of Test Method
4.1 Aspecimenofthepocketareawiththebar-tackingismountedcentrallyinclampsofthetensilestrengthmachineandaforce
is applied until the specimen breaks
5. Apparatus
5.1 Constant-rate-of-extension (CRE) tensile testing machine,asusedinTestMethodD5034,conformingtoSpecificationD76.
5.2 Clamps and jaws, rubber faced or other gripping surface—jawfacesmustmeasure1.060.02in.(2561mm)wideatleast
1 in. (25mm) , perpendicular to the direction of the force, and not less than 25 nor more than 50 mm ( 1.0 nor more than 2.0 in.).
The back, or bottom, jaw face of each clamp shall be at least as large as its mate. Use of a larger face for the second jaw reduces
the problem of front and back jaw face misalignment.
1
This test method is under the jurisdiction of ASTM Committee D13 on Textiles and is the direct responsibility of Subcommittee D13.54 on Subassemblies.
Current edition approved Aug. 15, 2009. Published October 2009. DOI: 10.1520/D7506_D7506M-09.
Current edition approved April 1, 2012. Published May 2012. Originally approved in 2009. Last previous edition approved in 2009 as D7506/D7506M-09. DOI:
10.1520/D7506_D7506M-12.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D7506/D7506M – 12
6. Safety Precuations
6.1 It is the users responsibility to use safe and proper techniques when handling or using any of the equipment mentioned.
6.2 Good laboratory practice should be followed. Wear safety glasses in all laboratory test rooms.
7. Sampling, Test Specimens, and Test Units
7.1 Cut the garment or the side pockets as shown in Fig. 1Figs. 1-4. If multiple samples are available, cut, if possible, a
minimum of 3 specimens. If not, test an agreed upon number of samples.
8. Preparation of Apparatus
8.1 Tensile Testing Machine:
8.1.1 Prepare the machine according to the manufacturer’s instructions.
8.1.2Set the distance between the clamps at 16 0.05 in (256 1mm) at the crosshead speed s
...