Analysis of pigment fading in rotary-forming
2024-12-03
Why is the pigment often faded in the rotary-molding feedback from the customer?
In fact, we do not know that the use of rotary-plastic are high-performance pigments, why there is a phenomenon of intolerance to migration. For example, a child made the pigment orange 64 into a slide, and when the children were playing, they would slide down and have color on their pants.
So this should be the customer's dispersion is not done well, he is doing masterbatch coloring? Or do you just color it with the original powder? This is generally the rotomolding industry and pigment orange 64 has nothing to do with it, but also has something to do with the resistance of the resin.
If the resin itself isn't heat resistant, the paint certainly isn't. Also consider the problem of weather resistance, if the resin itself is powdered, the pigment will be brought out.
Therefore, in the rotary-plastic, the pigment must be very temperature resistant, in the process of rotary-plastic, because its shear force is not high, so it can not be the original powder coloring, the best program is to do the color masterbatch coloring, it is not recommended to direct raw powder coloring.
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