Masterbatch Colour Matching
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We provide services for regular colour matching for masterbatch of different polymeric materials. However, our expertises and experiences enable us to specialise in very challenging cases from our customer.
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Fluorescence in transparent and translucent polymer
The biggest challenge for the fluorescent colour matching in transparent or translucent plastic materials is: The appearance of the fluorescent colour under daylight is not only determined by the pigments on the surface, but also by those embedded in the whole mass of the plastic material. On the contrary, the performance of the fluorescent colour under UV light in the dark, is determined by the pigments located on the surface of the plastic material, since these will absorb UV light and fluorescent light.
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We own the unique colour matching technology that can perform fluorescent colour matching for transparent or translucent plastic materials. Our special colour matching for fluorescent masterbatch aims to make the colour appearance of the customer's final product fit to the standard sample.
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Example
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The photos below show the fluorescent nylon masterbatch that we have tuned. After injection moulding, its daylight colour and its fluorescent colour in the dark are the same as the fluorescent pigment-dyed standard filament (Exact same thickness/ diameter and masterbatch material: PA6)
Thermochromic Colours
Since the thermochromic pigment has lower colour thickness and higher transparency than the usual pigment, the colour addition between thermochromic pigments and between thermochromic and regular pigments is frequently very different from the general perception.
Therefore the colouring matching of multiple stage thermochormic masterbatch becomes quite challenging.
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Not all thermochormic colour combinations can be achieved. Nevertheless, within the range of adjustable colour combinations, our three decades of experience will try our best to meet the requirements of our customers.
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Example
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The photos below show how carefully our R&D adjusted the colour before (green) and after thermochormic switch (yellow) per customer request (FDA level PP thermochromic masterbatch).
Glass Fibre Containing Polymer
Glass fibre cannot be dyed. Dying it can physically interfere with the colour appearance. The surface of glass fiber-containing products is usually rough and the glass fibre floating could be serious. Therefore, irregular light scattering, diffusion and diffraction phenomena may frequently occur, consequently interfering with the colour difference measurement via the colour difference metre.
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Adding coupling reagents is in addition a must for compounding GF containing materials to make GF compatible with the plastic. The coupling agent, which will react with the pigment molecule, is also the major cause of the unstable colour performance of GF-containing materials.
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Example
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Here, our experiences showed that the visual colour is identical even though the ΔE measured by the colour difference metre shows a value of 2-3.
Spot & Flow Pattern Masterbatch
In the case of spot masterbatch, the physical and chemical interaction between the pigment and polymer, is designed that after processing, it's presented in an inhomogeneous way, e.g. spot, flow pattern etc. in the polymeric materials.
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Example
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Spot thermochromic masterbatch and flow pattern masterbatch:
