3.1 Warp-related Preparations
85
[ 3 ] For warp-addition device
This device generally feeds two additional warps
into selvages in order to get cleaner warp separa-
tion at the left end of fabrics (at the weft insertion
side), thereby improving selvage firmness.
•
Yarn specifications:
Yarn having the same yarn number count
as the ground warp or
Two-ply or three-ply yarn having a slightly
greater number count
CM80/2’s, PC90/2’s, and CM120/2’s as
standard
•
Cheese shape
Additional-yarn cheeses should have the
dimensions and shape of either (A) or (B)
shown at left.
(2) How to draw in additional yarn through the
reed
– At the left side of the machine
Thread two additional yarns
●
and leno yarns
○
through an empty dent adjacent to the one
through which the leftmost ground yarns
△
are drawn.
– At the right side of the machine
Thread two additional yarns
●
and leno yarns
○
through an empty dent adjacent to the one
through which the rightmost ground yarns
△
are drawn.
Yarn type symbols:
○
Leno yarn
△
Ground yarn
▲
Waste-selvage yarn
●
Additional yarn
(1)
Additional yarn (which you should procure)
(A)
(B)
