3. PREPARATIONS FOR WEAVING START-UP
84
[ 2 ] For Half-leno Selvage Device
(Klöcker)
This device binds four leno yarns with every weft
yarn at each side of the fabric to produce a firmer
selvage construction than that produced by the full-
leno selvage device, which will not become loose if
weft yarns are cut.
Half-leno selvages should be produced for low-den-
sity fabrics.
•
Yarn specifications:
High-quality yarn having less fluff or burl
As fine and strong as possible
This is because the 4-leno weave contains
many cross sections so that produced sel-
vages become thick easily.
•
Yarn type: Two-ply (or three-ply), machine
sewing thread (parched yarn)
Yarn number count: Higher than that of
ground warp
(Ex.) When the ground warp is C40S’, use
leno yarn of C100/2S’.
•
If using the same type of yarn as for ground
warp may result in insufficient strength of
half-leno selvages or if the above specified
yarn is not available, select yarn having
similar physical properties as those speci-
fied.
When using the different types of yarn from
the ground warp, make sure that no prob-
lem occurs in the subsequent processes.
Install the half-leno selvage device before the
start-up of weaving. (It is packed separately
from the weaving machine proper.)
•
The half-leno selvage device should be
installed to the 1st and 2nd heald frames.
•
The standard structure of a half-leno sel-
vage is a plain weave. However, it may be
a mat weave depending upon the fabric
structure.
(3) How to draw in leno yarn through the reed
Draw in leno yarns through the reed in the
same manner as for the full-leno selvage
device.
NOTE:
For details, refer to the JAT610
INSTRUCTION MANUAL, Chapter 8, Section
8.2.
Half-leno selvage
(1)
Leno yarn (which you should procure)
Half-leno selvage
device
Half-leno yarn
(2) Half-leno selvage device (Toyoda is respon-
sible for the preparation of this.)
