Yarn Winding process | Precision Winding

Wednesday, May 16, 2012

Yarn Winding process | Precision Winding | Non Precision Winding

but also other factors such as packing cases, pressure due to windingtension, etc., must be considered. Basically, there are two types of winding machines: precision winders and drum winders. Precision widers, used primarily for filament yarn, have a traverse driven by acam that is synchronized with the spindle and produce packages with a diamond-patterned wind. Drum winders are used principally for spun yarns; the package is driven by frictional contact between the surface of the package and the drum.

Types of Winding

A.Precision Winding

B.Non Precision Winding

A.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.

Features

Package are wound with a reciprocating traverse

Patterning and rubbing causes damage of packages

Package contains more yarn

Package is less stable

The package is hard and compact

The package is dense

Rate of unwinding of package is low and the process of unwinding is hard

The unwound coil is arranged in a parallel or near parallel manner

B.Non Precision Winding

By this type of winding the package is formed by a single thread which is laid on the package at appreciable helix angle so that the layers cross one another and give stability to the package. The packages formed by this type of winding are less dense but is more stable.

Features

Only one coil is used to make this packages

Cross winding technique is used

The package density is low

Minimum number of yarn is wound

The package formed is soft and less compact

The stability is high

Flanges are not required

The rate of unwinding is high and the process is easy

The packages formed have low density

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Wednesday, May 16, 2012