Dyestuff industry experts
Home » Information » Industry Encyclopedia » Why do colored flowers appear during reactive dyeing?

Why do colored flowers appear during reactive dyeing?

Views: 1     Author: Site Editor     Publish Time: 2022-02-01      Origin: Site Inquire

1. Equipment


The key to avoiding the color pattern of cotton fabrics lies in the control of alkali addition. Especially in the stage of adding alkali, if there is a car entanglement, it is easy to cause color flowers. In addition, a reasonable cloth speed and pump pressure are also very important. It takes 3 minutes for a week of dyed cotton general color cloth, and 2 minutes for sensitive colors. Too fast or too slow is not suitable. Too fast will cause the dye to be over-leveled and the color will be lighter. If it is too slow, the color will be easily changed.


2. The pretreatment is not clean


Degreasing is not cleaned, resulting in inconsistent permeability of the cloth surface, especially thicker types of cloth, there will be color flowers; residual hydrogen peroxide, deoxygenation is not clean, it will cause the dye not to color, the oxygen content should be measured before dyeing to confirm that there is no hydrogen peroxide Dyeing can be done after the residue; in the dyeing process, penetrants, emulsifiers, etc. are added in order to enhance the permeability of the fabric, sometimes resulting in foam and color.


3. Flow color


After the cloth is dyed out of the tank, it should be a damp cloth before it is set, and it is necessary to prevent the color flow; the active turquoise blue is easy to flow, and the problem can generally be solved by soaping with hot water. Generally, the cloth should be dried or set within 8 hours after dyeing.


Related Articles

content is empty!

Didn't find what you want?

We look for the best partner to share our product range and our philosophy! Welcome to be our next partner!
You can contact us now and tell us what you need, and we will reply to you immediately.
Contact us

QUICK LINKS

PRODUCTS

APPLICATIONS

copyright 2020 ©  Hangzhou Tiankun Chem Co.,Ltd