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ASTM D 1422/D1422M : 2013 : R2020

Current
Current

The latest, up-to-date edition.

Standard Test Method for Twist in Single Spun Yarns by the Untwist-Retwist Method
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

02-01-2020

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

Note 1:For 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 are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

1.5This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Committee
D 13
DocumentType
Test Method
Pages
5
PublisherName
American Society for Testing and Materials
Status
Current
Supersedes

ASTM D 4849 : 2020 Standard Terminology Related to Yarns and Fibers
ASTM D 4849 : 2013 : R2018 Standard Terminology Related to Yarns and Fibers
ASTM D 1059 : 2017 : R2022 Standard Test Method for Yarn Number Based on Short-Length Specimens
ASTM D 123 : 2019 Standard Terminology Relating to Textiles
ASTM D 3888 : 2015 Standard Terminology for Yarn Spinning Systems
ASTM D 3888 : 2015 : R2022 Standard Terminology for Yarn Spinning Systems
ASTM D 1059 : 2017 Standard Test Method for Yarn Number Based on Short-Length Specimens
ASTM D 4849 : 2021 Standard Terminology Related to Yarns and Fibers
ASTM D 123 : 2023 Standard Terminology Relating to Textiles
ASTM D 123 : 2001 Standard Terminology Relating to Textiles

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