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Original site in Italian language, the translations are handled automatically by the program using Google translation

Mercerizing Yarn

Conditioning

And 'The procedure used to confer the proper degree of wetting of the yarn cone. Used only in cases in which the yarn is intended for final marketing, as this process is stabilized by the weight of the yarn, especially if he has suffered excessive drying.

Unwinding (Hanks to Cone)

During which the operation is reported by wrapping the yarn in hank to cone formation. During this phase it is important to ensure proper and uniform yarn tension to prevent breakage during use of weaving looms and knitting machines

Drying

Through a special oven, the drying process of the hanks of mercerized cotton yarn is used to remove water due to the final washing during dyeing or bleaching of yarns.

It 'necessary to check the optimally temperature and humidity, to avoid an excessive drying of the fiber results in the closure of micro pores in the molecular structure of cellulose II. One involves the closure of micro pores decreased ability to absorb the humidity, which is important in mercerized yarns.

Mercerizing Process

Mercerizing Machine Extensa by ReggianiMacchine

The Mercerizing Process it 'a chemical-physical treatment applied to the polymer chain of cellulose fibers, such as cotton, linen, hemp and all their compositions where the cellulosic fibers are prevalent in the formation of the yarn.

- Chemical, exothermic chemical per serving in the cellulose chain through a caustic fluid

(preferably sodium hydroxide, but it is also possible with lithium hydroxide, potassium and other alkali metals).

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Reeling

The yarns on cones collected must be prepared for the mercerization of making hanks, this process is called reeling. Reeling in the cross-bar has a reciprocating motion and size is the space occupied by the hank so that the yarn is wound around the reel with the wires crossed over each other. The design parameters are the width of the coil, the angle of intersection of the wires, epoxy also define a taper of two sidewalls, to prevent the fall of the wires than the width of the planned hank.
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Singeing

The Next Step to twisting during which, passing through a flame, the hair is burned in excess thread, leaving the smooth, shiny and uniformly.

is not used on all production and non-mercerized yarn, helps to improve the visual quality of the yarn.

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