Methods of representing drafting plan
1. By ruling line: here horizontal lines represent the heald frames and
vertical lines with arrow head represent the warp yarn. The intersection point
is the position of the warp yarn in heald frame
2.
By Design Paper:
Above is a representation of drafting
plan by design paper
1.
The vertical lines (columns) represents
warp yarn
2.
The horizontal lines (rows) represent a
heald shaft
3.
The ‘x’ shows the heald shaft occupied
by the warp yarn (here warp yarn 1 occupies heald shaft 1;
warp yarn 2 occupies heald shaft 2 and so on)
3. By numbering: as shown below, here the heald frame number is written below
the warp yarn under a weave plan.
Different systems of
drafting
1. Straight Draft:
·
It is the simplest form of draft system where
individual warp yarn in a repeat is place in individual heald frame.
·
Number of heald frame required is equal to the
number of warp yarn in the repeat.
·
Mostly used in twill design
2. Skip Draft
·
This
draft is use when EPI is high.
·
This
draft reduces the friction between the yarns.
·
Number
of heald frames used is two times the number of warp yarn in a repeat.
3. Pointed Draft
·
This
draft is used to make fabric with symmetry design e.g. zig zag, twill, diamond.
·
This
draft is used when the repeat size is too large.
·
In
this draft system a straight draft is returned in the opposite direction after
a certain point.
·
The
number of heald frames used is equal to half the number of warp yarn in a repeat.
Above three is the most common drafting system. Other
drafting systems are as follows
4.
Broken
draft
5.
Divided
draft
6.
Grouped
draft
7.
Combined
draft
8.
Curved
draft
9.
Sateen
draft
10. Bed fort cord draft
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