Silver Stone Industries

Polymers & Plastics Industry



Calcium Carbonate Powder

Calcium Carbonate (CaCO3) is one of the most widely used Mineral Fillers in the Plastics and Polymer industry, and its use in rigid packaging has increased significantly over the years……As an additive in Plastic and Polymer compounds, CaCO3 helps decrease surface energy and provides opacity and surface gloss, which improves surface finish. In addition, when the particle size is carefully controlled, CaCO3 helps increase both impact strength and flexural modulus (stiffness).

Once thought of simply as a resin extender, the addition of calcium carbonate in plastics has been shown to contribute to increased performance, improved processing, and improved sustainability of the finished part.

Calcium Carbonate may be used with a myriad of thermoplastic resins. Polypropylene compounds are often filled with calcium carbonate to increase rigidity, an important requirement for operations at high temperatures. In PVC, calcium carbonate is used with flexible compounds such as tubing, wire and cable insulation, latex gloves, trash bags and in rigid compounds such as extruded pipes, conduits and window profiles.

Both calcium carbonates and coated calcium carbonates contribute to the ultimate performance properties of this wide variety of piping applications. Product choice depends on the specific application and the property requirements of that application. For maximum property development and formulation flexibility, surface-treated carbonates are designed to give good dispersion along with excellent incorporation in the polymer matrix.

Calcium carbonate improves the base properties of polyvinyl chloride by adding stiffness to the polymer matrix and improving impact resistance as particle sizes become smaller. Calcium Carbonate also improves compounding performance by helping disperse various ingredients into the PVC powder blend and improves processing by making polymer flow more homogeneous.

Calcium Carbonate filler is one of the most innovative solutions ever developed in this industry. Calcium carbonate filler not only functions in improving the quality of final plastic products but also helps plastic manufacturer reduce as much production cost as possible, hence gain more profits.

In general, CaCO3 powder is widely used as a plastic additive in industrial production for several reasons, Check out five great reasons why you should consider using Calcium Carbonate:


Talc Powder

Talc is the softest mineral filler used in the Plastics industry. It has high resistivity, low gas permeability, low abrasiveness, and high lubricity. All of these qualities are attributed to Talc’s platey structure. The aspect ratio of Talc fillers is as high as 20:1.

Because it is a commodity Plastic with low weight and density, its uses can remain limited without plastic fillers and additives that make it more substantial. One such plastic filler/additive is talc, a water-repellent, chemically inert mineral that consists of a layer or sheet of brucite between two sheets of silica.


Talc Powder is the powdered form of Magensium Silicate. It possesses several physical and mechanical properties which uniquely suit Plastics and Polymers manufacturing. Following is a snapshot of how Plastics and Polymers industry finds use for Talc powder.



Dolomite Powder

Dolomite powder is an anhydrous carbonate mineral which comprises calcium magnesium carbonate. It finds its use widely in Plastic, in PVC footwear, PVC Pipes, cables and others. One of the most widely used Mineral Fillers in the Plastics and Polymer industry, and its use in rigid packaging has increased significantly over the years due to its low cost and abundance availability.