Patent Number: 047724307
Section: claims

1. A process for compacting and solidifying solid waste materials, comprising shredding solid waste materials having a moisture content of up to 30% by weight to obtain a shredded mass, and compacting and solidifying said shredded mass at a temperature of 120.degree. to 260.degree. C. by extrusion together with at least one thermoplastic resin as a solidifying agent for said waste materials, said extrusion being carried out under compression in an extrusion molder with a screw to obtain a rod-like mass simultaneously with generating friction heat by friction of the thus obtained rod-like mass with the inner wall of said extrusion molder to melt the thermoplastic resin contained in the peripheral portion of said rod-like mass in sliding relation to said inner wall and said screw, said thermoplastic resin being present in an amount by weight of at least 10% of said solid waste materials whereby a solid mixture of said waste materials and said thermoplastic resin is obtained in the form of a rod-like mass. 2. A process for compacting and solidifying solid waste materials which contain used ion exchange resins which consists of shredding said solid waste materials of moisture content up to 30% by weight to obtain a shredded mass and compacting and solidifying said shredded mass at a temperature of 100.degree.-190.degree. C. by extrusion together with at least one thermoplastic resin as a solidifying agent for said waste materials, said extrusion being carried out under compression in an extrusion molder with a screw to obtain a rod-like mass simultaneously with generating friction heat by friction of the thus obtained rod-like mass with the inner wall of said extrusion molder to melt the thermoplastic resin contained in the peripheral portion of said rod-like mass in sliding relation to said inner wall and said screw, said thermoplastic resin being present in an amount by weight of at least 10% of said solid waste materials whereby a solid mixture of said waste materials and said thermoplastic resin is obtained in the form of a rod-like mass. 3. The process according to claim 1 wherein said extrusion molder is an extruder, said extruder has a die, and said waste material is subdivided to a particle size corresponding to the size of the diameter of said die.