Mineral Powders for Masterbatch Manufacturing

Cost-effective mineral fillers for masterbatch compounding

Industry Overview

Masterbatch manufacturing is a critical process in the plastics industry where concentrated pigments, additives, or fillers are compounded into a carrier resin to create a granular product that can be easily metered and blended during plastic processing. At Ridhi Sidhi Microns, we supply precision-milled mineral fillers that serve as the functional core of filler masterbatch — the most widely used type of masterbatch in the Indian plastics industry. Sodium Sulphate (Na₂SO₄) is increasingly used as a high-performance filler in masterbatch manufacturing for PP (Polypropylene), LD (LDPE), HD (HDPE), and EVA polymer compounds. Its high purity (≥ 99%), consistent particle size, and excellent dispersibility make it ideal for producing filler masterbatch that reduces raw material costs without compromising product quality. Ground Calcium Carbonate (GCC) remains the most popular mineral filler for calcium carbonate masterbatch. Our GCC grades with controlled D50 particle size and high brightness ensure excellent dispersion and consistent colour in PE and PP masterbatch production.

Performance Benefits

Cost Reduction

Mineral fillers like Sodium Sulphate and GCC significantly reduce polymer consumption, lowering overall production costs in PP, LD, HD, and EVA products.

Excellent Dispersion

Our ball-mill ground Sodium Sulphate and ultrafine GCC ensure uniform filler distribution throughout the masterbatch, preventing agglomerates and surface defects.

PP/LD/HD/EVA Compatibility

Sodium Sulphate is compatible with a wide range of polyolefin carriers — PP, LDPE, HDPE, and EVA — making it a versatile filler for diverse masterbatch formulations.

Consistent Batch Quality

Precision grinding and rigorous quality testing ensure batch-to-batch uniformity, critical for large-scale masterbatch production.

Recommended Minerals

Precision-milled grades tailored for masterbatch manufacturing applications:

Need formulation advice?

Our R&D team can help select the exact grade and mesh size for your compound.

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Frequently Asked Questions

Which mineral filler is best for masterbatch manufacturing?

Sodium Sulphate and GCC are the two most widely used mineral fillers. Sodium Sulphate (RM-FIL-101) is ideal for PP, LD, HD, and EVA masterbatch, while GCC is preferred for calcium carbonate masterbatch.

Can Sodium Sulphate be used in PP masterbatch?

Yes. Sodium Sulphate is widely used as a filler in PP masterbatch manufacturing due to its high purity, consistent particle size, and excellent dispersibility.

What loading levels can be achieved with Sodium Sulphate filler?

Loading levels of 40–70% are commonly achieved in filler masterbatch using Sodium Sulphate, depending on the carrier resin and end application requirements.

Is Sodium Sulphate compatible with LDPE and HDPE?

Yes. Sodium Sulphate disperses uniformly in both LDPE and HDPE carrier resins, making it suitable for filler masterbatch used in blown film, injection moulding, and extrusion.