ASTM D5171-09a
(Test Method)Standard Test Method for Impact Resistance of Plastic Sew-Through Buttons
Standard Test Method for Impact Resistance of Plastic Sew-Through Buttons
SIGNIFICANCE AND USE
This test method may be used to determine the ability of a button to resist breaking under impact, for example in pressing the end item, which could cause the button to fail.
Note 1—In the development of this test method it was found that the following factors influenced the ability of a button to resist failure under impact conditions: resin formulation, shape ligne size, thickness, number and spacing of holes. Buttons may also pass this test but fail during the pressing of a garment due to the presence of heat during pressing.
If there are differences of practical significance between the reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, test samples should be used that are as homogeneous as possible, that are drawn from the material from which the disparate rest results were obtained, and that are randomly assigned in equal numbers to each laboratory for testing. Other materials with established test values may be used for this purpose. The test results from the two laboratories should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If a bias is found, either its cause must be found and corrected, or future test results must be adjusted in consideration of the known bias.
Test Method D 5171 for the determination of the impact resistance of buttons may be used for acceptance testing of commercial shipments of buttons but caution is advisable since information is lacking on precision.
SCOPE
1.1 This test method covers the determination of impact resistance of plastic sew-through buttons.
1.2 The values stated in either acceptable metric units or other units shall be regarded separately as standard. The values expressed in each system may or may not be exact equivalents: therefore, each system must be used independently of the other, without combining values 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D5171 − 09a
StandardTest Method for
1
Impact Resistance of Plastic Sew-Through Buttons
This standard is issued under the fixed designation D5171; 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 3.1.4 ligne size, n—an English unit, used to measure
buttons, one ligne equals 0.635 mm (0.025in).
1.1 This test method covers the determination of impact
3.1.5 sew-through buttons, n—a button that has two or more
resistance of plastic sew-through buttons.
holes on its face for passage of a needle and thread or possibly
1.2 The values stated in either acceptable metric units or
other material in order to attach it to a flexible substrate.
other units shall be regarded separately as standard.The values
3.1.6 For other textile terminology used in this method,
expressed in each system may or may not be exact equivalents:
refer to Terminology D123.
therefore,eachsystemmustbeusedindependentlyoftheother,
3.1.7 For definitions of button terms used in this method,
without combining values in any way.
refer to Terminology D5497.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Test Method
responsibility of the user of this standard to establish appro-
4.1 Individual buttons are placed on a surface centered
priate safety and health practices and determine the applica-
under a tube through which a preselected mass falls from a
bility of regulatory limitations prior to use.
preselected height. After the mass impacts the button the
2. Referenced Documents
impacted button is removed and visually examined using a 5X
2
magnifying glass for breakage, cracking, or chipping.
2.1 ASTM Standards:
D123 Terminology Relating to Textiles
5. Significance and Use
D618 Practice for Conditioning Plastics for Testing
3
D5497 Terminology Relating to Buttons (Withdrawn 2011)
5.1 This test method may be used to determine the ability of
a button to resist breaking under impact, for example in
3. Terminology
pressing the end item, which could cause the button to fail.
3.1 Definitions:
NOTE 1—In the development of this test method it was found that the
3.1.1 button, n—a knob, disc, or similar object which when
following factors influenced the ability of a button to resist failure under
forced through a narrow opening or buttonhole, fastens one
impact conditions: resin formulation, shape ligne size, thickness, number
partofagarmentorotherflexiblesubstratetoanother(Seealso
and spacing of holes. Buttons may also pass this test but fail during the
pressing of a garment due to the presence of heat during pressing.
sew-through button)
3.1.1.1 Discussion—Although the primary purpose of but-
5.1.1 If there are differences of practical significance be-
tons is to serve as fasteners, buttons can also be used as
tween the reported test results for two laboratories (or more),
decoration.
comparative tests should be performed to determine if there is
a statistical bias between them, using competent statistical
3.1.2 face, n—inbuttons,thatportionwhichwillbeexposed
assistance.As a minimum, test samples should be used that are
after attaching to the substrate.
as homogeneous as possible, that are drawn from the material
3.1.3 impact resistance, n—resistance to fracture under the
from which the disparate rest results were obtained, and that
sudden application of an external force.
are randomly assigned in equal numbers to each laboratory for
testing. Other materials with established test values may be
1
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
used for this purpose.The test results from the two laboratories
and is the direct responsibility of Subcommittee D13.54 on Subassemblies.
should be compared using a statistical test for unpaired data, at
Current edition approved April 1, 2009. Published May 2009. Originally
approved in 1991. Last previous edition approved in 2009 as D5171–09. DOI:
a probability level chosen prior to the testing series. If a bias is
10.1520/D5171-09A.
found, either its cause must be found and corrected, or future
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
test results must be adjusted in consideration of the known
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on bias.
the ASTM website.
3 5.2 Test Method D5171 for the determination of the impact
The last approved version of this historical standard is referenced on
www.astm.org. resistance of buttons may be used for acceptanc
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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:D5171–09 Designation:D5171–09a
Standard Test Method for
1
Impact Resistance of Plastic Sew-Through Buttons
This standard is issued under the fixed designation D 5171; 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
1.1 This test method covers the determination of impact resistance of plastic sew-through buttons.
1.2 The values stated in either acceptable metric units or other units shall be regarded separately as standard. The values
expressed in each system may or may not be exact equivalents: therefore, each system must be used independently of the other,
without combining values 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D 123 Terminology Relating to Textiles
D 618 Practice for Conditioning Plastics for Testing
D 5497 Terminology Relating to Buttons
3. Terminology
3.1 Definitions:
3.1.1 button, n—a knob, disc, or similar object which when forced through a narrow opening or buttonhole, fastens one part
of a garment or other flexible substrate to another (See also sew-through button)
3.1.1.1 Discussion—Although the primary purpose of buttons is to serve as fasteners, buttons can also be used as decoration.
3.1.2 face, n—in buttons, that portion which will be exposed after attaching to the substrate.
3.1.3 impact resistance, n—resistance to fracture under the sudden application of an external force.
3.1.4 ligne size, n—an English unit, used to measure buttons, one ligne equals 0.635 mm (0.025in).
3.1.5 sew-through buttons, n—a button that has two or more holes on its face for passage of a needle and thread or possibly
other material in order to attach it to a flexible substrate.
3.1.6 For other textile terminology used in this method, refer to Terminology D 123.
3.1.7 For definitions of button terms used in this method, refer to Terminology D 5497.
4. Summary of Test Method
4.1 Individual buttons are placed on a surface centered under a tube through which a preselected mass falls from a preselected
height.After the mass impacts the button the impacted button is removed and visually examined using a 5X magnifying glass for
breakage, cracking, or chipping.
5. Significance and Use
5.1 This test method may be used to determine the ability of a button to resist breaking under impact, for example in pressing
the end item, which could cause the button to fail.
NOTE 1—In the development of this test method it was found that the following factors influenced the ability of a button to resist failure under impact
conditions: resin formulation, shape ligne size, thickness, number and spacing of holes. Buttons may also pass this test but fail during the pressing of
a garment due to the presence of heat during pressing.
5.1.1 If there are differences of practical significance between the reported test results for two laboratories (or more),
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 MarchApril 1, 2009. Published MarchMay 2009. Originally approved in 1991. Last previous edition approved in 20062009 as
D5171–00(2006).D 5171–09.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. 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.
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D5171–09a
comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical
assistance.As a minimum, test samples should be used that are as homogeneous as possible, that are drawn from the material from
which the disparate rest results were obtained, and that are randomly assigned in equal numbers to each laboratory for testing.
Other materials with established test values may be used for this purpose. The
...
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