can mesh fabric be dyed

1), the normal refining process of cotton fiber to refining (involving the refining temperature, time, additives) refining aids: scouring enzymes, caustic soda, tea saponin (with hydrogen peroxide and scouring enzyme dual function); hydrogen peroxide Whiteness of an additive to eliminate pigment (oxidation)).

2) Matters needing attention: a, to achieve the purpose, gross effect how? (Cloth vertical, how much water can climb, the principle can not be less than 8 cm (not refined), can not be higher than 15 cm (excessive refining, strong decline); 12 cm is the best. Dye penetration is not good B, PH value of what? (Refined to maintain neutral, or follow-up dyeing color. Reactive dyes in alkaline conditions, the dye will immediately fixing, resulting in color). If the more alkaline, that is too acid. There is a test of hydrogen peroxide test paper, high oxygen content shows discoloration (too high lead, reactive dyes can not color or light color, resulting in poor color deviation color, because the reactive oxygen species oxidized, destroy the structure, into water Alkaline dye, a wash gone), methods: plus oxygen enzyme.After the dyeing process, you need to quickly and effectively evaluate the above three aspects.If the above three aspects of the assessment is OK, the end of the refining.

Dyeing process (dye cotton)

A, dyeing process curve (how to choose: 1, dyeing tone, has been entered into the computer, set and numbering; 2, foreman according to the nature of the dye decided to use that set of dyeing process curve;

B, block cylinder water (according to the bath than the drain (the process card has a bath ratio (bill of materials) and lace weight), put more light color, put less color depth.

C, plus additives (in accordance with the steps of the process curve plus dyes and additives, is the time to add, running time how much); D, add dye,

E, warming up

F, insulation

G, add soda ash color

H, sampling above need to strengthen the staff's process execution. Manual and automatic control (washing is manual control), the staff may automatically change to manual when the process is executed, resulting in insufficient time and temperature (for example, the red product, the employee will inject the dye once, causing the dye not to bloom , Sprayed onto the cloth to form a dye point)

I: Sampling for color (take a sample early wash, to the foreman on color), color OK, to inform the tank wash. Add not OK, the foreman decided to add the original tank color (almost the same, if multiple colors will be spent, more will burst out to re-evaluate a program, decided by the skills of dyeing foreman) or soaping Remove after add color);

J: After-treatment process too acid: A, balance the PH value to reach the PH value requirements; for soaping process (with alkali soaping will make the color lighter); b, if the assessment of color depth, Acid, so that with alkali soaping, to ensure that the color to achieve the required depth. Soaping: Add a soaping agent (alkaline soaping agent), remove the floating color, to ensure color fastness. Hot water (heat run): 80 degrees light wash, deep color 95 degrees wash Cold wash: rinse at room temperature (cloth temperature to room temperature)