100% Purity Permanent Fabric Dye Reactive Brill Yellow PE C I Yellow 85 P-type

PACKING for reactive dyes manufacturer in Jiangsu Province China

1. 25KG or 50KG individual package as need
2. Inner: plastic bag as need
3. Outer: carton box or plastic drum (optional)

4. 20' FCL can load over 11 ton in carton box

Dyeing methods of reactive dyes; Reactive dye dyeing cotton, the most commonly used dyeing method: disseminated method, and also a pad dye. Disseminated method: the impregnation method can be divided into one bath one step, one bath two steps, two bath three dyeing methods. A: one bath one step method: dyeing in the alkaline bath, that is, fixing the color at the same time of dyeing, this method is simple, the dyeing time is short, the operation is convenient, but because the adsorption and fixation are carried out at the same time, the dye can no longer diffusion, so the levelness and penetration poor. Under alkaline conditions, the dye stability of dye bath, the hydrolysis is more. B: one bath two step method: first, dyeing in the neutral bath, when the dye is close to balance, add the alkali in the dye bath, adjust the ph value to the solid color specified ph value, ( general 11 ) when the dye and fiber to achieve covalent bond, to achieve the purpose of fixing color. One bath two step method is a more reasonable dyeing method in reactive dye impregnation method, it can not only obtain higher dye uptake and fixation rate. And it has good levelling effect, so the dyeing of cotton knitted fabric is often used.