CHEMICAL | PIGMENTS
Dry milling and classification for pigments.
Pigments are special substances and do not dissolve in a medium, so they must be well dispersed in the medium. Due to their optical properties, they are used as colour-forming substances, e.g. in paints, printing inks or inkjet inks, or as preservatives with special technical and chemical properties.
A first particle size reduction reduces the pigments and dyes to a medium particle size, corresponding to a D97 at 80µ. From this fineness, our process often includes a micro-selection phase before moving on to a micronisation phase.
Dyes are divided into inorganic and organic dyes, unlike pigments, they are totally soluble in their vehicle (water or organic solvent). They can be used to colour fibres (textile dyes), plastics and plastic fibres, and as colour-giving substances in food technology, such as beta-carotene in soft drinks.
Sustainable processing solutions
Fully integrated solutions are the key to providing optimised processes that help you both reduce costs and make more sustainable use of valuable resources.
These systems are based on the principle of:
• Reliability and safety
• Low operating and maintenance costs
• Guaranteed hygienic, customer-oriented process solutions
• Easy cleaning
• Energy saving
The diverse characteristics of powders in these types of industries require a combination of engineering skills and experience to design quality systems to meet the expectations of today’s and tomorrow’s customers.
Among the main uses, we can mention:
• Metal powders and components
• Coating powders
• Inorganic pigments
• Natural dyes
Process testing and development
The POITTEMILL Group has its own scientific laboratory as well as a test center which is unique in France. It is in this test center that the dialogue between customers and the technical teams begins, but it is also here that detailed analyses of their raw materials are carried out to obtain complete information on the execution of the task set.
Our development and engineering team is always available to help you explore new and innovative processes and applications.
Our testing facilities offer exceptional opportunities to test ingredients, machines, parameters, and processes, whether in the laboratory, pilot or industrial scale, to ensure you achieve the necessary product quality and operating efficiency.
Type of tests
Classification - grinding
Test including drying
Test including inerting
Test including FORPLEX grinding equipment
Crushing and Screening Test
Particle size analysis
Hardgrove grindability index (HGI)
Laser particle size measurement - dry grinding / Lab Sieve
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At the forefront of innovation, the POITTEMILL Group has been designing its own equipment for over 90 years, offering customized turnkey solutions.
Sustainable processing systems
In the context of the climate emergency, the environment is the strategic priority of the POITTEMILL Group. The Group approaches it with the ambition to offer processing technologies that maximise production efficiency while minimising your carbon footprint. In addition, our POITTEMILL Group dry powder processing technologies are developed to support and integrate a more sustainable life cycle.