METHOD FOR MANUFACTURING EXTRUSION-MOLDING

PROBLEM TO BE SOLVED: To provide a method for manufacturing an extrusion-molding (A) which easily adds a liquid medium (C) into a raw material powder (B), kneads the mixture to form a kneaded article (D), and extrudes it from a die (3) while the inner pressure (P) of the die (3) is kept between the upper limit (Pmax) and the lower limit (Pmin) without requiring a complicated operation even when the viscosity of the kneaded article (D) is changed by a change in outer air temperature and the differences in physical properties of the raw material powder (B). SOLUTION: The method for manufacturing of the present invention is characterized by measuring the inner pressure (P) of the die (3), elevating an extrusion temperature (T) when the inner pressure (P) exceeds the upper limit (Pmax), and lowering the extrusion temperature (T) when it is lower than the lower limit (Pmin). An extrusion molding apparatus (1) used for this method for manufacturing is equipped with a manometer (4) and an extrusion temperature adjusting device (5). In addition, the extrusion temperature (T) is elevated or lowered by this temperature adjusting device (5). COPYRIGHT: (C)2005,JPO&NCIPI