KNEADING EXTRUDER AND PREPARATION OF TONER USING IT

摘要

PROBLEM TO BE SOLVED: To obtain a kneading extruder in which an additive of small particles is dispersed uniformly into a binder resin, and a kneaded material is transported smoothly to the next process by connecting a slide-shaped discharge part slanted downward to the outlet of a cylinder part having a kneading transportation member for raw materials in the inside. SOLUTION: A trough-shaped discharge part 10 is welded to be inclined downward to a mounting stay 11 having an opening of the same shape as the cross section of the opening of a cylinder 3 which is installed in the outlet of the cylinder 3. The inclination is not restricted in particular if it makes a kneaded material transported from the cylinder 3 slip down smoothly and prevents the material from being scattered by impact when the material is inserted between press rollers 9. Appropriate inclination is 30-60 deg.. Surface treatment is applied to the inner surface of the discharge part 10 to improve slippage so that the kneaded material can slip down smoothly without sticking to the surface. The surface is coated preferably by polytetrafluoroethylene.