Yarn Archives - Page 6 of 6

Functions of Carding Machine

Carding is a mechanical process that breaks up locks and unorganized clumps of fiber and then aligns the individual fibers so that they are more or less parallel with each other. Carding can also be used to create blends of different fibers or different colors. Carding plays a crucial role in all spinning cycles particularly in the woolen spinning cycle, in which it incorporates different functions, all essential in order to obtain the level of quality required for the product.

Oct 27, 2010 Read more

Ring Spinning, the widely used yarn formation technique

The Ring Spinning is the most widely used form of the spinning machine due to significant advantages in comparison with the new spinning processes. The ring spinning machine is used in the textile industry to simultaneously twist staple fibers into yarn and then wind it onto bobbins for storage. The yarn loop rotating rapidly about a fixed axis generates a surface referred to as “balloon”. Ring frame settings are chosen to reduce yarn hairiness and the risk of glazing or melting the fiber.

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Staple Yarn Spinning

The larger part of staple fibre, approx. 33 mio tons are processed in short staple spinning. This part of the spinning industry therefore is of great significance in the world of textile production.

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Filament Yarn Spinning

For transforming filament fibres to yarns involve processes such as Wet spinning, Dry spinning, Melt spinning, Bi-component spinning, Bi-constituent spinning, ICS etc.

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Yarn Formation Techniques

The Fibre formation process includes a change in shape, structure, and properties of the thermoplastic polymer. The polymer pellets or granules are fed into an extruder where, through heating, their melting temperature is exceeded. The polymeric melt is then transported, under pressure, to the spinneret. Yarn formation methods were originally developed for spinning of natural fibers including cotton, linen, wool and silk.

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Yarn Spinning – Formation of Yarn

Yarn spinning is the process of manufacturing yarn from different types of fibres into a continuous length from one or more type of fibers. Spinning is the most important and the initial step in fabric manufacturing. The major goals of spinning is to produce the quality yarn from raw material, then remove the process faults followed by winding the short length bobbins on Cones. There are different types of spinning, the most commonly forms of spinning are: Ring, Rotor, Air Jet, Friction etc.

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Cotton ginning – processing fiber

From the field, seed cotton moves to nearby gins for separation of lint and seed. The cotton first goes through dryers to reduce moisture content and then through cleaning equipment to remove foreign matter.

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Yarn/Thread Count Numbering System

Threads are usually made up of several single strands twisted or plied together. The numbering system for threads has two parts: one related to the thickness of the single strand and the other to the number of strands (ply). Whereas the ply is expressed in thickness and the single strand is specified as a ?count? related to the length per unit weight. Cotton Count system, Tex system, and the Metric Ticket system are some of the commonly used thread numbering systems.

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