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ASTM D 1422/D1422M : 2013 : REDLINE

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The latest, up-to-date edition.

Standard Test Method for Twist in Single Spun Yarns by the Untwist-Retwist Method

Available format(s)

PDF

Language(s)

English

Published date

01-07-2013

€67.30
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CONTAINED IN VOL. 07.01, 2015 Defines the determination of twist in single spun yarns when only an approximation of the true twist is required.

Committee
D 13
DevelopmentNote
Supersedes ASTM D 1422. (08/2013)
DocumentType
Redline
Pages
7
PublisherName
American Society for Testing and Materials
Status
Current

1.1This test method2 describes the determination of twist in single spun yarns when only an approximation of the true twist is required.

Note 1For a more accurate method see Test Method D1423.

1.2This test method is applicable to spun single yarns in continuous lengths, and also to spun yarns raveled from fabrics, provided specimens at least 200 mm [8 in.] long can be obtained.

1.3This test method has been found satisfactory for use in determining the approximate twist content in single ring spun yarns of all types and fiber contents, but not in open-end spun yarns.

1.4This specification shows the values in both inch-pound units and SI units. The “inch-pound” units is the technically correct name for the customary units used in the United States. The “SI” units is the technically corrected name for the system of metric units known as the International System of Units. 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.

1.5This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

ASTM D 5446 : 2008 : R2019 Standard Practice for Determining Physical Properties of Fabrics, Yarns, and Sewing Thread Used in Inflatable Restraints
ASTM D 5446 : 2008 : R2013 Standard Practice for Determining Physical Properties of Fabrics, Yarns, and Sewing Thread Used in Inflatable Restraints
ASTM D 5446 : 2008 Standard Practice for Determining Physical Properties of Fabrics, Yarns, and Sewing Thread Used in Inflatable Restraints

ASTM D 2258 : 1999 Standard Practice for Sampling Yarn for Testing
ASTM D 3888 : 2015 : REDLINE Standard Terminology for Yarn Spinning Systems
ASTM D 1059 : 2017 Standard Test Method for Yarn Number Based on Short-Length Specimens

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