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Accuracy of CCM
In order to obtain the proposed shade, combination dyeing with several dyes is common. Dyeing with a single dye is exceptional.
The dyeing properties of reactive dyes, when used in combination dyeing, are influenced by the total dyeing concentration, mixing ratio, and the difference of affinity of each component. The dyeing
behaviour of dyestuffs varies between combination dyeing and dyeing with a single dye.
The difference makes it difficult to estimate the dyeing behaviour from the basic data of each component. In order to overcome this, there is a system to correct the dye interaction. However many
basic data are necessary for the implementation of this system and its accuracy is limited.
Kayacion E-CM dyes, which adjust the affinity and the dyeability of each component, make the accuracy of CCM extremely high.
Fig.1 shows the dye interaction in combination dyeing.
| [Fig.1] |
Dyeing behaviour of blue component in combination dyeing |
| (Dye) : |
Kayacion Golden Yellow E-SNR, Kayacion Red E-S3B, Kayacion Blue E-SE |
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(Combination dyeing) |
The change in exhaustion of the blue dye (Marine E-CM) in various total concentrations and the mixing ratio at a constant dyeing concentration is illustrated.
The transferring from A to B or C indicates the effect of the total concentration on the exhaustion of the blue dye (using Marine E-CM), while the difference between B to C shows that the exhaustion
of the blue (Marine E-CM) dye becomes different when the mixing ratio of the yellow and the red component is different.
The accuracy of CCM becomes high when each component used in combination dyeing has a similar transferring tendency from A to B or C and a small difference between B and C. The test results of Kayacion
E-CM series are shown in Fig.2.
| [Fig.2] |
Dyeing behaviour of Kayacion E-CM Series in trichromatic dyeing
(Dyeing behaviour on the basis of Yellow, Red and Blue individually. Mixing ratio : refer to Fig.1)
(Using Marine E-CM for Blue) |
The behaviour of each component is so similar that high-precision CCM results can be obtained by using the CCM basic data for each component.
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