摘要 |
PURPOSE:To manufacture a flat extruded material without burning or the like by connecting a barrel and a die section of a biaxial screw type extrusion dryer without installing a breaker plate between said two sections and mounting a nozzle of special shape on the end of the die section. CONSTITUTION:A die section 1 is connected with a barrel 2 and a breaker plate is not installed between them. The shape of a nozzle section 4 is formed in a manner that an axis center extension of a screw 3 forms a constricted section 5 and that both sides of the screw and a central extension section is formed to make a swollen section 6, and the profile of the nozzle section is wavy. The shape of the same is, therefore, just opposite to the swollen section and the constricted section formed when extrusion is carried out simply by removing the breaker plate. As a result, flow and swollen state of molten material is varied, and the extrusion shape formed without the breaker plate is compensated to manufacture a flat extruded material. |