Filler masterbatch is a compound of CaCO3 stone powder with other additives on primary plastic beads – carrier particles, with the aim of replacing virgin plastic beads used in plastic production, a very expensive raw material. Filler masterbatch is the common name of a group of plastic-based materials whose main function is as a filler in plastic product manufacturing processes. Filler masterbatch is considered the most cost-effective solution in any plastic manufacturing operation.