Analysis of causes of abnormalities during fabric dyeing
Tag:
Fabric dyeing, functional fabrics, dye fastness, flame retardant fabrics
A. Poor operation and knotting in dyeing can easily produce serious color blooms.
B. The temperature rises too fast, the coloring is too fast in a short period of time, and the heat preservation time is not enough, which can easily lead to insufficient leveling time.
C. The hardness is high in a certain period due to water supply.
D. Improper pH adjustment, especially when using high-fastness dyes to make ultra-fine OP-containing fabrics, color blooms or color differences are likely to occur.
E. The color formula has poor compatibility. The dye has poor stability and reproducibility at high temperatures, and is prone to color blooming or color difference.
F. When the dyeing vat changes hue, the vat is not cleaned properly, resulting in oil stains or lumpy color flowers on the cloth surface during dyeing.
G. The size of the nozzle is not suitable, and it is easy to produce striped colored flowers.
H. The gray fabric contains a lot of oil and the oil is not clean. When dyeing, it is easy to produce colored flowers in the areas where the oil is not clean.
I. The dyeing tank is too large or the cloth in the tank is too long.
J. The dyeing speed is too slow.
K. The effectiveness of the auxiliaries used in dyeing is unstable or the compatibility between the dye factors and the auxiliaries is poor.
L. The relaxation and refining efficiency is poor.
M. The dyeing tank is too large.
N. The dyeing machine is not operating normally.
U. When dyeing, the cooling speed is too fast, so that the cloth surface directly enters the cold water state from high temperature to form small horizontal wrinkles.
V. The selection of nozzles is unreasonable.
W. The dye migration is poor.
If the speed is too fast, the tension of the fabric will increase) and the fabric will fold vertically, and the color at the crease will be different from the color of other parts.
：Other
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