Masterbatch

Calcium Carbonate in Masterbatch Production

Calcium carbonate (CaCO₃) masterbatch is one of the most widely used intermediate products in the plastics industry. Produced as a concentrated granular feedstock containing 60–80% calcium carbonate in a polymer carrier (typically PP, PE or PVC), it is metered into the final product compound at the converter. Both natural and stearate-coated micronized calcite are used in masterbatch production — selection depends on target loading and final application.

At Aydın Madencilik, we produce natural and coated micronized calcium carbonate from high-purity calcite stone at our Bursa Gemlik facility using German Hosokawa Alpine technology. Our masterbatch-grade products are supplied to CaCO₃ filler masterbatch, white masterbatch and additive masterbatch producers across Turkey, Europe and global export markets.

High-Loading CaCO₃ Filler Masterbatch Production

For high-loading CaCO₃ filler masterbatch production, stearate-coated calcium carbonate is the standard choice. Stearic-acid surface treatment improves dispersion of calcite particles in the polymer matrix and enhances processability during compounding extrusion. Our coated grades — AY 108K (8 µm), AY 210K (10 µm), AY 212K (12 µm) and AY 215K (15 µm) — deliver ideal dispersion performance in 70–80% loaded filler masterbatch formulations, with stable extrusion behaviour and a clean strand on the pelletizer.

Filler Masterbatch and White Masterbatch

For economical filler masterbatch production, cost optimization is the priority. Our AY 318K (18 µm) and AY 318 (18 µm) coarse-micron grades are used in high-loading economical filler masterbatch formulations. For white masterbatch production, our high-brightness AY 108 (8 µm) and AY 210 (10 µm) natural grades are typically used alongside titanium dioxide (TiO₂) to deliver an optimal cost-performance balance — a common formulation strategy among European white masterbatch producers.

Natural vs Stearate-Coated Calcium Carbonate Selection

Selection between natural and coated calcium carbonate in masterbatch production is driven by the target filler loading and the end-use application. Lower loadings (30–50%) typically use natural calcium carbonate (AY 108, AY 210, AY 212, AY 215) — suitable for general-purpose filler masterbatch, additive masterbatch and white masterbatch in combination with TiO₂. Higher loadings (60–80%) require stearate-coated calcium carbonate (AY 108K, AY 210K, AY 212K, AY 215K, AY 318K), which delivers the polymer compatibility, dispersion and processability needed for high-loading CaCO₃ masterbatch production.

From Raw Material to Masterbatch Feedstock

The natural and stearate-coated micronized calcium carbonate we supply to the masterbatch industry is produced from high-purity calcite stone extracted at our own licensed quarry sites. The calcite is ground and micronized on Hosokawa Alpine mills, and coated grades are subsequently surface-treated with stearic acid on our coating lines. Operating from our 15,000 m² production facility in Bursa Gemlik, Turkey, since 1999, we produce masterbatch-grade calcium carbonate that meets the industry’s requirements for narrow particle size distribution and consistent batch-to-batch quality.

Why Choose Aydın Madencilik for Masterbatch-Grade Calcium Carbonate?

Both natural and coated calcium carbonate from a single integrated supplier — masterbatch producers can cover their entire CaCO₃ requirement with one source. Hosokawa Alpine micronization delivers narrow particle size distribution; our coating lines deliver uniform stearic-acid surface treatment. Proximity to Gemlik Port enables fast maritime shipments to European masterbatch producers in Germany, Italy, France, Spain, the Netherlands, Belgium, Poland and the United Kingdom — supporting both EU and global export markets.