Lots of things matter when it comes to engineering and executing the right precipitated calcium carbonate (PCC) coating strategy. Uniform coat quality, coat weight, and printability are high on the list. But none of these things happen predictably unless a PCC with a narrow particle size distribution (PSD) is built into the coating formulation. Optimum light scattering, which is achieved by having a narrow particle size distribution, depends on two fundamentals that only PCC can economically provide:
- Consistent open pore volume between coating particles of equal size and
- Surface uniformity as a result of custom-engineered, uniform, and alignable particle shapes.
Cost-effectiveness of Specialty Minerals Inc. (SMI) PCC is even more apparent with movements towards higher brightness levels and lower basic weights. Cost savings come from reducing the need for expensive pigments such as titanium dioxide, calcined clay, and plastic pigment; reducing binder levels; and lowering operational expenses, notably reducing drying costs that come with coating layers.
Our coating PCC yields value-added paper with superior brightness, smoothness, and gloss; paper that’s easier to make, with a process that’s easier to adjust. That’s why the right mineral strategy matters so much.
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