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spinning

Cone Winding in Ring Spinning systems

The cop which is prepared in the ring frame is not suitable for further processing. So the yarn is converted into the shape of a cone which is prepared in the winding. Practical experience shows that winding process alters the yarn structure. The factors which affect the yarn structure during winding are bobbin geometry, bobbin unwinding behavior, and binding speed. This phenomenon does not affect the evenness of the yarn but it affects the properties of the yarn such as thick and thin places.

Aug 17, 2011 Read more

Yarn formation using Air-Jet Spinners

The Air-Jet spinning is very sensitive to the fiber length and fiber length distribution(short fiber content) of the material being processed. The amount of wrapping twist varies depending upon the length of the wrapping fibers as only a part of the total extent is utilized to wrap the core fibers. Wrapping the fibers shorter 12.5 mm practically do not make a significant contribution to the strength of the yarn.Air-jet Spinning is suitable for processing medium and long staple comber cotton fibers a

Aug 10, 2011 Read more

Standard Staple Yarn Spinning Procedures

Yarn making from staple fibers involves picking (opening, sorting, cleaning, blending), carding and combing (separating and aligning), drawing (re-blending), drafting (drawing into a long strand) and spinning (further drawing and twisting). Silk and synthetic filaments are produced by a less extensive procedure. Current high-production yarn-making operations are performed on integrated machines that perform this entire sequence as one combined operation.

Jun 21, 2011 Read more

Draw frame Functions

Carded Slivers are fed into the Draw-Frame and are stretched/Straightened and made into a single sliver. Also, fibre blending can be done at this stage. The cans that contain the sliver are placed along the draw-frame feeder rack, usually including eight pairs of cylinders (each pair is above the space occupied by a can),the lower cylinder is commanded positively, while the upper one rests on the lower one in order to ensure movement of the relative sliver that runs between the two.

Oct 27, 2010 Read more

Open-end or Carded or Break or Rotor Spinning

The first functioning of rotor spinning, machine was presented at the ITMA in 1967.Yarn spinning according to the rotor spinning principle predominates for all nonconventional spinning methods.It omits the step of forming a roving.After drafting, the sliver is fed into a rotary beater.This device ensures that the fibers are beaten into a thin supply which enters a duct and gets deposited on the sides of the disc(rotor).The transportation of the fibers is achieved through air currents.

Oct 27, 2010 Read more

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

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.

Oct 27, 2010 Read more