Polypropylene (PP) filler masterbatches are additives used in the production of nonwoven fabrics to improve various properties and reduce costs. These masterbatches typically consist of a carrier resin (PP) and a high percentage of filler material, such as calcium carbonate or talc.

The addition of filler materials allows manufacturers to reduce the overall cost of nonwoven fabric production. Fillers are less expensive than pure resin, so they help in achieving cost savings while maintaining adequate performance. Depending on the type and amount of filler used, nonwoven fabrics can exhibit improved tensile strength, tear resistance, and dimensional stability.