Patent ID: 7195728

Claim:
A method of molding a rubber product from a rubber compound consisting essentially of: compounding a substantially full amount of carbon black (CB) and a substantially full amount of process oil with raw rubber to prepare a precursory compound; kneading said precursory compound to prepare at least one granular master batch (granular MB); transporting said one granular MB in an extrusion molding apparatus having a mixer, a kneading region and an extrusion region; mixing and dispersing vulcanizing chemicals into said one granular MB to prepare a rubber compound in said mixer of said extrusion molding apparatus; kneading said rubber compound by supplying said rubber compound into said kneading region of said extrusion molding apparatus; and extruding said kneaded rubber compound in said extrusion region of said extrusion molding apparatus to thereby mold said rubber product.