intensifier mixing blade to prevent agglomeration the reinforcing additives must be added slowly at a steady flow rate to prevent agglomeration during the pretreatment step localized high temperatures are encountered at or near the high speed mixing blades of the equipment employed this prevents introducing a resin to the filler because the resin would melt and result in agglomeration in utilizing the integral blending technique the reinforcing additives must be capable of dispersing the filler and the reinforcing additives must also be capable of being uniformly distributed throughout the filler this prevents agglomeration in integral blending according to this invention the reinforcing additives can be added rapidly one shot to the filler or filler resin mixture followed by gentle agitation low level usage of the reinforcing additives while still maintaining benefits of the reinforcing additives is a substantial and unexpected advantage of this preferred feature furthermore the reinforcing additives can be integrally blended according to this invention directly into the processing equipment e g banbury containing the filler resin mixture and prior to the fluxing stage of the melt composite for these reasons integral blending is a preferred embodiment of the present invention the amount of reinforcing filler blended with the thermoplastic organic polymer may vary over a wide range depending upon the particular end use application usually the reinforcing filler mixture is at least five 5 u00b0 percent by weight of the filled thermoplastic polymer blend to.