Albacar® precipitated calcium carbonates (PCCs) are a family of ideal mineral fillers for papermaking settings where maximum caliper and brightness are required. Its unique scalenohedral (or rosette) morphology, average particle size, and particle size distribution are controlled during synthesis to provide economical paper opacity, brightness, and bulk. Optimized filler bulk helps maintain paper grade stiffness. In addition, Albacar® PCC maximizes light scattering (opacity and brightness) which minimizes the need for costly alternative minerals and optical brighteners. This mineral filler is recommended for use in uncoated fine papers and coating base stock.
Specialty Minerals Inc. (SMI) manufactures three grades of Albacar® PCC as shown in the selector chart. In general, these scalenohedral calcite crystals have similar properties but differ in particle size and surface areas. These differences yield desirable properties that the papermaker can exploit to his advantage. For example, the smaller particle size Albacar® HO PCC is used where opacity and brightness are more important. The larger particle size Albacar® LO PCC is the filler of choice where improved sheet strength and added bulk are desired.
You can request technical data and Material Safety Data Sheets (MSDS) for Albacar® PCC products. Click here.
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