Q1: Why is calcium carbonate used in plastics?
Calcium carbonate is a cost-effective filler that increases stiffness, improves dimensional stability, and reduces shrinkage in plastic products. It also lowers production costs by replacing a portion of the more expensive polymer.

Q2: How does it improve plastic performance?
Its fine particle size and high whiteness enhance surface smoothness and color brightness, while also improving mechanical strength in polypropylene (PP), polyethylene (PE), and PVC applications.

Q3: Which types of plastic benefit the most?
It is widely used in PVC pipes, films, sheets, automotive parts, packaging materials, and household products.

Q4: Can calcium carbonate make plastics more sustainable?
Yes. By replacing part of the polymer with a mineral filler, it reduces the amount of petroleum-based resin needed, lowering the carbon footprint.

Q5: Is there a difference between coated and uncoated calcium carbonate in plastics?
Yes. Coated calcium carbonate has a surface treatment (often stearic acid) to improve dispersion and compatibility with plastic resins. Uncoated grades are better suited for certain non-polymer uses.