ASTM D 1059 Standard Test Method for Yarn Number Based on Short-Length Specimens
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ASTM D 1059 Document Information:
Title
Standard Test Method for Yarn Number Based on Short-Length Specimens
ASTM International
Publication Date:
Sep 10, 2001
Scope:
This test method covers the determination of the yarn number of all
types of cotton, woolen,
worsted, and man-made fiber yarns taken from packages; or from any
textile fabrics in which the
yarns are intact and can be removed in measurable lengths. The test
method is not applicable to
yarns taken from napped or cut pile fabrics. Because this method is
based on short-length
specimens, the results should only be considered as approximations of
yarn number.
NOTE 1 - For a more precise procedure for the determination of yarn
number, refer to Test Method D
1907.
NOTE 2 - The following additional methods for the determination of
yarn number have been approved
for yarns made from specific fibers: Specifications D 541, D 578, and
D 681.
This test method is applicable to yarns which stretch less than 5 %
when tension on yarn is
increased from 0.25 to 0.75 cN/tex (0.25 to 0.75 gf/tex). By mutual
agreement it may be adapted to
yarns which stretch more than 5 % by use of tension lower than that
specified in the method for
elastomers or use of tension higher than that specified in the method
to pull the crimp out of
textured yarns.
The values stated in SI units are to be regarded as standard; the
values in inch-pound units are
reported as information only.
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.
Keywords:
- yarn number
- yarn
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