| 摘要 |
PROBLEM TO BE SOLVED: To enable the hardness of a synthetic resin to be discharged to be changed to given use conditions and the borderline of the hardness to be clearly defined and further, manufacture a hose while achieving an advantageous cost. SOLUTION: This synthetic resin extrusion device has a plurality of receiving parts 9A and 9B which receive a specified amount of the synthetic resin extruded from an extrusion means 1 for individually supplying a plurality of different kinds of molten synthetic resins with a different hardness. In addition, the receiving part 9B located at a specified position is made to be set at a position off the specified position and the remaining specific receiving part 9A not located at the specified position is made to achieve communication with a discharge nozzle 16A in an almost orthogonal direction with the nozzle 16A in such a state that a specified amount of the synthetic resin with a different hardness received at the receiving part 9A is retained. Thus the synthetic resins A and B with a different hardness are sequentially extruded. |
