A Polymer Masterbatch is a concentrated mixture of pigments, additives, or other substances that are blended into a polymer resin. This mixture is then used to color or enhance the properties of plastic products.   The masterbatch is typically produced by melting the polymer resin and incorporating the desired components (e.g., colorants, stabilizers, flame retardants, or UV inhibitors) into it.

The resulting masterbatch is a highly concentrated form that is later diluted when incorporated into the final product, which ensures uniform distribution of the additives.  Masterbatches are commonly used in industries like packaging, automotive, construction, textiles, and electronics.