ASTM D5171-15
(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
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), 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.
5.2 Test Method D5171 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 − 15
Standard Test 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 preselected height. After the mass impacts the button the
impacted button is removed and visually examined using a 5X
1.1 This test method covers the determination of impact
magnifying glass for breakage, cracking, or chipping.
resistance of plastic sew-through buttons.
1.2 The values stated in either acceptable metric units or
5. Significance and Use
other units shall be regarded separately as standard. The values
5.1 This test method may be used to determine the ability of
expressed in each system may or may not be exact equivalents:
a button to resist breaking under impact, for example in
therefore,eachsystemmustbeusedindependentlyoftheother,
pressing the end item, which could cause the button to fail.
without combining values in any way.
NOTE 1—In the development of this test method it was found that the
1.3 This standard does not purport to address all of the
following factors influenced the ability of a button to resist failure under
safety concerns, if any, associated with its use. It is the
impact conditions: resin formulation, shape ligne size, thickness, number
responsibility of the user of this standard to establish appro-
and spacing of holes. Buttons may also pass this test but fail during the
priate safety and health practices and determine the applica-
pressing of a garment due to the presence of heat during pressing.
bility of regulatory limitations prior to use.
5.1.1 If there are differences of practical significance be-
tween the reported test results for two laboratories (or more),
2. Referenced Documents
comparative tests should be performed to determine if there is
2
2.1 ASTM Standards:
a statistical bias between them, using competent statistical
D123 Terminology Relating to Textiles
assistance.As a minimum, test samples should be used that are
D618 Practice for Conditioning Plastics for Testing
as homogeneous as possible, that are drawn from the material
D2050 Terminology Relating to Fasteners and Closures
from which the disparate rest results were obtained, and that
Used with Textiles
are randomly assigned in equal numbers to each laboratory for
testing. Other materials with established test values may be
3. Terminology
used for this purpose.The test results from the two laboratories
3.1 Definitions:
should be compared using a statistical test for unpaired data, at
3.1.1 For definitions of button terms used in this test
a probability level chosen prior to the testing series. If a bias is
method, refer to Terminology D2050. found, either its cause must be found and corrected, or future
3.1.1.1 The following terms are relevant to this standard:
test results must be adjusted in consideration of the known
button, face, impact resistance, ligne size, sew-through flange bias.
buttons.
5.2 Test Method D5171 for the determination of the impact
3.1.2 For other textile terminology used in this test method,
resistance of buttons may be used for acceptance testing of
refer to Terminology D123.
commercial shipments of buttons but caution is advisable since
information is lacking on precision.
4. Summary of Test Method
4.1 Individual buttons are placed on a surface centered
6. Apparatus
under a tube through which a preselected mass falls from a
6.1 Impact Resistance Testing Machine—The impact resis-
tance tester consists of a tube through which a plunger of
1
standard mass drops onto the button from a predetermined
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
and is the direct responsibility of Subcommittee D13.54 on Subassemblies.
height. The button is centrally positioned based on ligne size,
Current edition approved Jan. 15, 2015. Published September 2015. Originally
by means of a locating jig, on a flat metal surface. The energy
approved in 1991. Last previous edition approved in 2009 as D5171–09a. DOI:
of impact is determined by the mass of the plunger and the
10.1520/D5171-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or height of the drop.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.2 Magnifying Glass—a 5X magnifying glass is used to
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. visually examine the buttons after impact.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
...
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 − 09a D5171 − 15
Standard Test 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
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:
D123 Terminology Relating to Textiles
D618 Practice for Conditioning Plastics for Testing
D5497D2050 Terminology Relating to ButtonsFasteners and Closures Used with Textiles (Withdrawn 2011)
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)
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 April 1, 2009Jan. 15, 2015. Published May 2009 September 2015. Originally approved in 1991. Last previous edition approved in 2009 as
D5171–09.–09a. DOI: 10.1520/D5171-09A.10.1520/D5171-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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 the ASTM website.
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.
3.1.1 For other textile terminology definitions of button terms used in this test method, refer to Terminology D123D2050.
3.1.1.1 The following terms are relevant to this standard: button, face, impact resistance, ligne size, sew-through flange buttons.
3.1.2 For definitions of button terms other textile terminology used in this test method, refer to Terminology D5497D123.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D5171 − 15
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),
comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical
assistance. As a minimum, test s
...
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