Page 31 - Shawl Weaving Artisan - TT

Textile & Handloom Related Theory for Exercise 1.2.08-12
Shawl Weaving Artisan - Winding and Warping

Winding process, defects and preventions

Objectives: At the end of this lesson you shall be able to
• state what is winding
• explain types of winding
• describe the objectives of the yarn winding
• explain types of fill bobbins
• list the winding defects and its prevention method.

Winding • Package contains more yarn.
Winding is one of the most important operation, which is • Package is less stable.
mainly occurred in spinning section. Besides, it is also • The package is hard and compact.
important in fabric manufacturing. In fabric manufacturing,
directly winding is not so much important, but re-winding • The package is dense.
is so important. The creation of large yarn packages that • Rate of unwinding of package is low and the process
can be easily unwound, is called winding. This makes of unwinding is hard.
using the yarn on subsequent machines both easier and
more economical. • The unwound coil is arranged in a parallel or near
parallel manner.
The process of transferring yarns from ring, bobbin,
hank into a suitable package is called winding. It may • Non-precision winding
be electrical or mechanical. By this type of winding the package is formed by a single
For warp winding Cone, cheese, flanged bobbin. thread which is laid on the package at appreciable helix
angle so that the layers cross one another and give
For weft winding Pirn, cop. stability to the package. The packages formed by this
Types of winding type of winding are less dense but is more stable. (Fig 2)
• Precision Winding.
• Non-Precision Winding.
• Precision winding

By precision winding successive coils of yarn are laid
close together in a parallel or near parallel manner. By
this process it is possible to produce very dense package
with maximum amount of yarn stored in a given volume.
(Fig 1 &2)

Features
• Only one coil is used to make this package.

• Cross winding technique is used.
• The package density is low.
• Minimum number of yarn is wound.
• The package formed is soft and less compact.
Features
• The stability is high.
• Packages are wound with a reciprocating traverse.
• Flanges are not required.
• Patterning and rubbing causes damage of packages.
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