Hunan Raco Enterprises Co.,Ltd. 5/20/2013 7:56:28 PM

The choice of dyes and join Stars by nature dyes are three classes of basic dyes, acid dyes and direct dyes, various dyes have their adaptation pH value range, in general, the basic dye to adapt the pH value of 4.5 ~ 6.5 4.5 ~ acidic dye 5.0 5.5 to 6.5, direct dyes. I plant to use neutral sizing agent AKD actual production, we have chosen the direct dyes for color paper wholesale. Dye added to the timing and sequence of colored paper production is also important, not only to ensure that the added dye and fiber best staining adsorption process, while not causing uneven dyeing, production through the production of different join points paper contrast Finally, we determine the dye is added to a needle wood pulper,color paper wholesale to take such a manner on the dye, on the one hand to ensure that the contact time so that the dye and the fiber dyeing uniformity, while the slurry is in the beating process, the temperature can be 40 to 50 ° C slurry temperature was increased, and contribute to staining. If you are using two or more dyes, the following methods can be used Add to: Hydrapulper pulp pair of wells disc refiner pulp well mixed pool # 1 # 2 # dye dye dye

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