What is the reason why the color and color sample made by Tencel are quite different

What is the reason why the color and color sample made by Tencel are quite different

                       
Update:08-10-2021
Summary: What is Tencel fabric? All those who make fabrics should know this big man in the fabric industry. ...
What is Tencel fabric? All those who make fabrics should know this big man in the fabric industry. As a representative of environmental protection, Tencel fabrics can be said to be deeply loved in Europe. But the headache of such a good fabric is that the color is always poorly done. First of all, it is difficult to confirm the color sample, and secondly, there are problems such as tank error and unevenness. What is the reason? Let's analyze it.
The head tank made of Tencel fabric is very different from the color sample. The main reason is the sand washing. The color swatches are washed in this way. Put a lot of small color swatches together and then lightly sand wash with water, so that less color will fall off. The bulk sand wash will be heavier. So this leads to inaccurate colors. This is the main reason for this. Of course, inaccurate dyeing cannot be ruled out. This is also a main reason.
The cylinder difference and the horse difference of Tencel are also more obvious. The main reason is that Tencel cloth can only be made about 1000 meters per cylinder, and sand washing is also done one by one, so this is the reason for the difference in fabrics.
These two aspects must be explained to customers when making Tencel. If you encounter a customer who has high requirements for color, there will be a lot of trouble. If the ugly words are in the first place, it will be much easier to do things later.