The disperse dyestuffs dyed polyester yarn is dyed by a split-cup method using a sub-sampling test and the cloth speed/length of the dyeing machine (the dyeing yarn is obtained by the flow rate); among the test combinations, some dyes have different absorption rates. They are not exactly the same, some are very similar, and it is good to say that they are very similar.
For this reason, a good combination of anthraquinone dyes has the following characteristics:
1 Each time the key dyes are concentrated in the same temperature area,
The key period here refers to the point where the temperature range spreads widely and the technician pays attention when planning the dyeing curve.
2 The dye is fully absorbed at constant temperature.
Dyes are absorbed at a constant temperature during the asynchronous absorption. Some dyes have already absorbed OK, and some dyes have to be heated 50-60 minutes to complete.
With the use of monomer dyes as color matching combinations, the compatibility of the dyestuffs is not ideal. Therefore, the dyestuff company has begun to develop the shallow primary and deep three primary color combinations, which are made by mixing multiple dyes. Of course, the hue should be moderate, and include the above 1 and Two advantages, in addition to the dye company also found that can be equipped with low temperature sensitivity characteristics of the 4PH low sensitivity.
For example, the dispersive shallow Sanyuan Yellow ACE is a mixture of four different Yellow monomers.
Non-idealized combinations of different combinations of dyes have their own curve.
1 The wrong design of the key period: When the warming should be slow, it will be too fast, it will lead to the end of the flowers, and the fast warming time will be slower, wasting the dyeing time.
2 Constant temperature time wrong design: Too long is a waste of time, too short is insufficient absorption, and the color is unstable.
For the above 12 items, as long as the dyeing curve is wrong, the color is unstable, and the result will not be very good because of the good dye you use.
The above is not because of the use of good or bad compatibility, but will increase the recurrence rate, but any combination you use right curve? The correct curve allows the dye to absorb completely, so the reproducibility is high; when using the complex dye, the dyeing curve used cannot be used indiscriminately. The dyeing curve should be carried out correctly according to the rules; the dyeing curve should also be used correctly in the workshop. The reproducibility of the deuterium staining curve is of course high.
The so-called "rule of regulation": It is also the use of scientific experiments by technicians, and the orders issued; (Some factories have 30-50 dye curves for selection) The dyeing curves provided outside are reference to most of the dye properties (of course compatibility) A good dye is covered in its range, because it is better to use the correct reproduction rate , but as long as you use the wrong one, you have a problem! The combination with good general compatibility will almost never use the wrong curve, because the probability of dyeing cylinders with three primary colors (composing dyes) is about 45% (very high!) If something goes wrong, the dyeing factory will find it to change the curve long ago, and it has long since resolved. Now. So the three primary colors you are using are very good curves and they are crystallized!
Because there is often no dyeing, and the reproducibility of other non-compatible dyes is excellent, people must conclude that the reproducibility of the dyes must be matched with the use of dyes, and should also be included in the important factors of reproducibility.
The excellent combination of blending and blending, especially with dyes with low temperature sensitivity and low PH sensitivity, can reduce the number of management items from 13 to 11 items, which seems to be helpful for reproducibility; but There are at least 13 factors in the present nature from the above table, but in terms of factory management, we will not encounter a good combination of compatibility, in just one for the temperature management (PH pH), the original 8) and 9 ) These two items can be particularly sloppy, and the remaining 11 items are handled with care. ! However, the poor compatibility of the special staff called the 13 factors of the staff to pay special attention. This management is too strange? ? And it seems that there is no such possibility! ! For the two important items, the following suggestions are routine factory management methods for reference only:
Temperature:
1 Each dyeing machine and each color proofing machine must be precisely calibrated (including temperature float) ±1°C
2 every two weeks for the correction cycle (and report to report)
3 I will never believe in thermostats. Even if it is German, I believe that I am correcting the results.
pH:
1 Adjust the pH ± 0.1 in the laboratory or dyeing shop. Confirm the OK before you can dye.
2 The workshop (site) should keep a good amount of PH dye solution, ready for random inspection 3 I do not allow to control the PH value between 4.5-5.5 on it! ! The idea.
Because of the poor management of these two factories in your factory, the use of antimony-based dyes has turned out to be a reproducible factor.
Disperse Dye Poor 〠Compatibility 〞 Typical Example
Special Cheap Real Green Yellow 7G Turquoise BG D.GreenD-4G Set
Hehe (this is the old name now the new name may have changed)
Key period spread widely from 85-130 °C and D. Green D-4G exhaustion time 50 minutes PH extremely sensitive temperature sensitivity can not be bad ± 1 °C; if you use UN-SE (deep Sanyuan original dyeing curve) must be color: if it is In addition, the factory usually does not regulate well, such as temperature and PH control .... basic action, when the color is colored, the reproducibility is 0%
If the usual reproducibility of the 13 items puts a lot of effort into it, the reproducibility will definitely satisfy you. Why should we worry about whether it is good or not?
Typical examples of poor reactive dyes and compatibility
When 60°C blue and 80°C blue color are used to create a brilliant blue color and the dyeing temperature is 80°C, the longer the constant temperature, the more pronounced the blue fleas at 60°C. Laboratory color testing machine and dyeing machine in the workshop usually have time to control the temperature curve and its temperature stability
No floating phenomenon. Coupled with other controls, the reproducibility can be naturally high.
Any dye has a history of 40-60 years. Large dye companies must recommend the dyes that are compatible with the dyes. We don't have to deal with them. We are looking for them. If we look for the top 10 dye companies to push them, they deserve it. It's in front of you. What is the general purpose of cotton (Polyester/nylon..) shallow Mihara? Deep three primary colors / green / red .... dyes of that type are cheaper and have higher fastness .... is not an open secret.
Instead, we have to spend a lot of time managing and controlling our own dyestuffs that are not easy to adapt to the factory. Once we use a combination with poor compatibility, we are still willing to control it. Because the high-end customers are not in a word to solve the problem.
Today’s guest requests are more and more critical, for example:
Pairing: How much of the first light source ΔE of the first light source is considered to be acceptable, and how much the second/third light source ΔE is considered to be approved. Even more specifically stipulating the range of Δa Δb after ΔE approval, light resistance: X-grade. Washing/Sweat/Friction: Grade X
In the artificial color or the use of computer color matching preferred combination of 〠〞 〞 〞 〞 是 是 庆 is good! No need to sigh. In accordance with the requirements of the guests, rather than in line with the compatibility of 〠〞 〞 〞 〞 〞 〞 〞 〞 〞 〞 〞 〞 〞 〞 〞 〞 〞 〞 å å å å å å å å å å.
For this reason, compatibility is a matter of technical level and it is a conclusion that the sub-sampling test is local; because the sub-sampling test is a basic dye test. Basic tests for disperse dyes are many, such as: sub-sampling test / pH-sensitive / disperse (agglomeration) / concentration / shade / cost comparison / washing / light / sublimation / sweat resistance.... Fastness. Compatible: As long as the basic technical test is a basic one, it can be archived forever.
The poor compatibility can still be reproducible. It is important to note that instead of choosing a compatible animal, you can prevent it from being more difficult to find.
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