Color printing unevenness can take the solution

a. The original paste should be cooked thoroughly, without particles, and not too thick to make a paste. Reactive dyes, Lara, blue dye should be selected medium-viscosity alginate paste, ice dye dyes selected synthetic glue paste. The color paste is made slightly thinner (generally 20% to 30% thinner) than when the fabric is printed, which effectively overcomes the problem of hair growth.

b. Adding a certain amount (2% to 3%) of State A paste in the reactive dye paste, using the leveling properties of State A paste, will help to overcome the color development, and it will have a good effect through practical application. The specific method is: First, add a certain amount of sodium alginate pulp to 2% to 3% of Bang A paste, and mix evenly on the mixer to make a semi-emulsified paste, and then make a slurry. Add the same to the ice dye dye paste. , Can also play a leveling effect, but the amount can not be more, such as the amount of color, can be appropriate to increase the amount of color base (color salt).

e. Due to the dense structure of the poplin fabric, when printing, the ground or other patterns are also easy to appear small white spots. The treatment method is: adding a small amount of penetrant in the reactive dye paste, stirring evenly, the white point problem will be solved. If it is an ice-dye dye paste, the amount of acetic acid may be appropriately increased. The amount of urea and glycerin may be added to the pull-pull or blue-pulp to solve the problem of white spots.

d. In order to increase the permeability of the semi-finished products, an appropriate amount of penetrant (such as a pull-out powder BX) is added during the process of adding white or naphthol to the bottom before printing, which is generally 0.59/L. This move is also very helpful in overcoming irregularities.

e. Necklace pressure increased appropriately. This will not only help to overcome unevenness in the floor and help increase the amount of color, especially for reactive dye printing. However, the pressure should not be too great. Otherwise, the load on the machine is too heavy and the pressure difference from other color cylinders is too large.

f. Increase the bare flower barrel. Stencils can be added on the rear of the barrel. The barrels can be installed passively. The pressure is in the range of 05 to 1 NPa. If the pattern is high on the flower, it should be used as the active cone. After printing, the color paste on the fabric is squeezed by the bare plate again, which can effectively improve the color unevenness.