ASTM D5426-03
(Practice)Standard Practices for Visual Inspection and Grading of Fabrics Used for Inflatable Restraints
Standard Practices for Visual Inspection and Grading of Fabrics Used for Inflatable Restraints
SCOPE
1.1 These practices cover procedures for the inspection and grading of coated and uncoated woven fabrics, and for the inspection and culling of cut parts made of such fabrics, all of which are used in the manufacture of inflatable restraint cushions.
1.2 For ease of reference, the scope, summary of practice, significance and use, apparatus, sampling, procedure, and report sections are listed separately for each inspection practice.Inspection PracticeSectionFabric Rolls7Cut Pieces8
1.3 These practices can be used to distinguish those fabric imperfections that may adversely affect inflatable restraint cushion fabrication or performance from those imperfections that will not.
1.4 Only major imperfections are considered in the grading systems of these practices.
1.5 Procedures and apparatus other than those stated in these practices may be used by agreement of the purchaser and supplier with the specific deviations from these practices acknowledged in the report.
1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.
1.7 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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Standards Content (Sample)
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Designation: D 5426 – 03
Standard Practices for
Visual Inspection and Grading of Fabrics Used for Inflatable
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Restraints
This standard is issued under the fixed designation D 5426; 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.
1. Scope 2. Referenced Documents
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1.1 These practices cover procedures for the inspection and 2.1 ASTM Standards:
grading of coated and uncoated woven fabrics, and for the D 123 Terminology Relating to Textile Materials
inspection and culling of cut parts made of such fabrics, all of D 3990 Terminology Relating to Fabric Defects
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which are used in the manufacture of inflatable restraint 2.2 ASTM Adjuncts:
cushions. Reference Photographs of Imperfections
1.2 For ease of reference, the scope, summary of practice,
3. Terminology
significance and use, apparatus, sampling, procedure, and
3.1 Definitions—For definitions of textile terms used in
report sections are listed separately for each inspection prac-
tice. these practices, refer to Terminologies D 123 and D 3990.
3.2 Definitions of Terms Specific to This Standard:
Inspection Practice Section
3.2.1 abrasion, n—for inflatable restraints, a cluster of
Fabric Rolls 7
broken filaments.
Cut Pieces 8
3.2.2 air splice, n—for inflatable restraint fabrics, the
1.3 These practices can be used to distinguish those fabric
thicker portion of a yarn resulting from the entanglement of the
imperfections that may adversely affect inflatable restraint
filaments at the ends of two multifilament yarns to create a
cushion fabrication or performance from those imperfections
continuous yarn.
that will not.
3.2.3 bleedthrough, n—for coated inflatable restraint fab-
1.4 Only major imperfections are considered in the grading
rics, the presence of coating material on the uncoated side,
systems of these practices.
between two yarns, without covering either yarn.
1.5 Procedures and apparatus other than those stated in
3.2.4 blip, n—for inflatable restraint fabrics, any short,
these practices may be used by agreement of the purchaser and
irregularly shaped or textured portion of an individual mul-
supplier with the specific deviations from these practices
tifilament yarn that has been woven into the fabric, including
acknowledged in the report.
slough offs, stripbacks, fuzz balls, snarls, and slubs.
1.6 The values stated in either SI units or inch-pound units
3.2.5 broken filament, n—for inflatable restraint fabrics, an
are to be regarded separately as standard. The values stated in
individual filament, separated from a multifilament yarn
each system are not exact equivalents; therefore, each system
bundle, that lies on the surface of the fabric.
must be used independently of the other.
3.2.6 bruise, n—for inflatable restraint fabrics, a shift in the
1.7 This standard does not purport to address all of the
squareness of the weave pattern in an area that has been
safety concerns, if any, associated with its use. It is the
subjected to impact or pressure.
responsibility of the user of this standard to establish appro-
3.2.7 coating slub, n—for coated inflatable restraint fab-
priate safety and health practices and determine the applica-
rics, an irregularly shaped lump of coating material on the
bility of regulatory limitations prior to use.
surface of the coated layer resembling a yarn slub.
3.2.8 coating streak, n—for coated inflatable restraint fab-
rics, minor variation in the color or opacity of the coated layer.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service ast service@astm.org. For Annual Book of ASTM
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These practices are under the jurisdiction ofASTM Committee D13 onTextiles Standardsvolume information, refer to the standrd’s Document Summary page on
and are the direct responsibility of Subcommittee D13.20 on Inflatable Restraints. the ASTM website.
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Current edition approved Dec. 1, 2003. Published January 2004. Originally Set of reference photographs are available fromASTM International Headquar-
approved in 1993. Last previous edition approved in 2002 D 5426 – 02a. ters. Order Adjunct No. ADJD5426.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5426–03
3.2.9 coating transfer, n—for coated inflatable restraint 3.2.24 minor imperfection, n—in fabric grading, a devia-
fabrics, the presence of coating material on the uncoated side, tion in a roll of fabric that judgment and experience indicate is
likely to have no bearing on subsequent use or processing of
covering one or more yarns.
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