Fabric
NB.
Have to study - Chromophore , Auxophore, Chromogen,
Fruit = Chromophore, Leaf= Auxophore,
Srack = Chromogen,
Q: What is Chromophore?
Finishing
Fabric
Weaving?
A major method of
fabric construction is weaving. In
weaving two sets of yarns are necessary for making the fabric. The vertical
sets of yarn is known as warp and the horizontal sets of yarn is known as weft.
It is essential to interlace warp and wept to produce the desired design of the
fabric during weaving.
Fig: Basic structure of a
conventional loom for weaving fabric
Essential
weaving operation:
In any type of weaving, four (4)
operations are fundamental, they are performed as sequence and constantly
repeated.
- Shedding: Raising specific warp yarns by means of the harness or heddle frame.
- Picking: Inserting weft yarns through the shed.
- Beating Up: Pushing weft yarns firmly in place by means of reed
- Taking up and letting off: Winding the finished fabric on the cloth beam and releasing more of the warp from the weaver’s beam.
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