1.1 This method specifies two procedures for the
determination of the length of yarns and threads in
package form subject to the limitations (par. 1.2 and
1.3) as to stretchiness, linear density of the yarn being
measured and the length of the yarn in the package.
1.2 This method is applicable to yarns (Note 1) that
stretch less than 5% when tension on the yarn is
increased from 2.5 to 7.5 mNItex. Ely mutual
agreement it may be adapted to yarns which stretch
more than 5% by the use of a lower reeling tension
than that specified in the method.
Determination of Length of Yarns and Threads
Détermination de la longueur des fils
1.3 Of the two procedures specified in this method. the
Wrap Reel procedure is preferable for:
No./No
4.4M87
a. packages of yarn whose lengths are less than
400 m; and
b. yarns of any length with a linear density between
200 and 2000 tex.
The Long Length Measuring Machine is applicable to
packages of yarn containing more than 400 m of yarn
finer than 200 tex.