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ASTM D6478-10(2014)

ASTM D6478-10(2014)

Standard Test Method for Determining Specific Packability of Fabrics Used in Inflatable Restraints

2019-01-16 /Historical
Superseeded by:
Significance and Use:

5.1 This test method is useful for determining the specific packability of uncoated and coated airbag fabrics. Fabric packability is an important factor in the design of airbag modules due to their inherent spacial constraints.

5.2 A folded specimen exhibits better specific packability if it occupies a lower total volume at the specified loads compared to another specimen.

5.3 The time required to test one sample (four specimens from the same lot of fabric) is approximately 1.5 h using this test method. Due to the length of time required by this test method to perform a single test, this test method is most suitable for use in design and development analysis or for inclusion in a list of required tests conducted for annual certification of an airbag fabric.


1.1 This test method covers procedures for determining the ability to fold and pack fabrics used for inflatable restraints using an index of specific packability.

1.2 Procedures in this test method describe operator techniques that must be followed closely to obtain repeatable and accurate results. Since these techniques are difficult to convey in writing, supplemental training for operators is required. A training video is available from ASTM (see Adjuncts ADJD6478 and ADJD6478A).

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 Procedures and apparatus other than those stated in this practice may be used as agreed upon between the purchaser and the supplier with specific deviations from this practice acknowledged in the report.

1.5 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.

airbag; fabric; inflatable restraint; packability; packing; volume
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