Production And Processing Of Mercerized Stripes

When producing pure cotton high count double filament colored striped cloth, because of the two mercerizing of the yarn, most reactive dyes can hardly meet the requirements of color and fastness. How can we control the technological conditions of the silk colored cloth in each process?

The speed and temperature should be strictly controlled when singeing, and the yarn hairiness should be basically eliminated and not singed.

The pretreatment of yarn can be boiled and bleaching one bath to ensure that the bleaching and bleaching are uniform and the whiteness is the same.

After boiling and bleaching, the yarn should be washed in hot water and cold water to keep the yarn pH neutral.

When the yarn is mercerized, the concentration of alkali liquor must be strictly controlled at 21.55% (28 degrees B + 0.2 B B). The temperature of alkali leaching is below 15 degrees, and the time of alkali leaching is reversed.

When alkali concentration is 2.5%-3%, mercerizing effect is the best.

When yarn is mercerized, it is also necessary to prevent producing mercerizing to cause uneven dyeing.

In dyeing, two reactive mercerized mercerized dyes without affecting the color fastness and color change were selected, including Evercion H-E/H dye of WIKO dye, domestic reactive blue H-EGN and turquoise blue H-A.

These dyes are chlorinated three azine vinyl sulfone mixed reactive dyes, and comply with international environmental protection requirements.

We should strictly control the heating rate and the amount and speed of adding alkali and salt when dyeing. We should pay attention to compatibility when mixing colors.

The alkali resistance of domestic H reactive dyes varies from each other, and small sample tests are needed before application.

Dyeing with dark coloring agent can improve the fastness to wet treatment, but it is necessary to note that color change may occur after fixation.