Pioneers of additives realized that their chemistry offers multiple advantages for use in thermoplastic polymers. Various findings regarding additives and their applications, have led to tremendous growth as reflected by their usage in polymer processing and end-product applications. The performance of filled polymers is generally determined on the basis of the interface attraction of filler and polymers.Incorporating inorganic mineral fillers into plastic resin improves various physical properties of the materials such as mechanical strength, modulus etc. In general the mechanical properties of particulate filled polymer composites depend strongly on size, shape and distribution of filler particles in the polymer matrix and extent of interfacial adhesion between filler and matrix.