Hubercarb® W3 is a 4-micron calcium carbonate produced in Quincy, IL containing an extremely low level of crystalline silica content.

Hubercarb® W Series Calcium Carbonate has a purity level of 99.3% and is mined from a world-class limestone deposit processed in Quincy, Illinois. Products include ultra-fine and fine median particle sizes. Three of the W Series grades have been surface-modified to enhance end-use performance. The W Series products are ideal for applications that require high-filler loadings, low moisture content and silica content below detectable levels. The W Series is low in trace metals like iron, which can promote undesirable degradation in some polymer systems. The unique particle shape and particle size distribution lend the W Series products to low viscosity at high-filler loadings, improved surface finish in molded parts, reduced part shrinkage and part breakage, while saving on expensive equipment repair costs.

APPLICATIONS

• BOPP

• Breathable Films

• Composites - Non SMC / BMC

• Compression Molding SMC / BMC

• Elastomers

• Polyolefins

• Pultrusion

• Thermally Sensitive Materials

• Plastics

• PVC Pipe

• Thermoplastics

• Compounding

• Rubber

• Vinyl

• Adhesives