Calcium Carbonate

Calcium Carbonate (CaCO3) is one of the most popular mineral fillers used in the plastic industry, particularly in styrene-based polymers and polyolefins. It is widely available around the world. It isn't soft or difficult to grind as mineral fillers go, which makes it one of the most economic ingredients in the industry.

To ensure that plastic compounds sold in the marketplace are chemically and physically inert, manufacturers use CaCO3 as an additive to impart properties like anti-flash, spun, glow, and increased gloss, opacity, clarity, and polarizabilities. Further, when properly dispersed, the nano-size CaCO3 particles also increase the impact strength and flexural modulus of chemically similar plastics.

Rephrase Calcium carbonate can be added to a myriad of thermoplastic resins. Polypropylene compounds are often filled with calcium carbonate to increase rigidity, an important requirement for operations at high temps. In low-density polyethylene compounds, calcium carbonate is used to reduce melting properties, and increase flexibility (for wire and cables). For wrapping and bundling rope, calcium carbonate is also used.