Function

An example of a morphological attribute

Increase paper density

plate-like (clay)

Increase paper thickness

larger, three-dimensional filler particles

Improve light scattering/opacity

particles with internal voids

blocky rhombohedral (0.4 - 0.5 µm)

rosette-shaped (0.9 to 1.5 µm)

Maintain paper stiffness

large-size scalenohedral

Improve dewatering

rounded, solid-form particles

Maintain strength (at high % filler)

clustered prismatic structure