| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber extruder capable of suppressing contraction of a rubber extruded object in an extrusion direction in a short time while having a simple structure.SOLUTION: A rectification body 8 extending toward the side of a cylinder 2 from a predetermined position receding behind a front end surface of an extrusion port 6 formed in a die 5 is disposed inside an extrusion channel 7 formed in at least the die 5 or a header 3. By making rubber extruded by a screw 4 to pass through a gap between the extrusion channel 7 and the rectification body 8 and extruding the rubber from the extrusion port 6, a rubber part brought into contact with the inner surface of the extrusion channel 7 and the surface of the rectification body 8 exhibits a behavior of extending in an extrusion direction after the extrusion. A cross-sectional center part of a rubber extruded object R to be contracted is restrained from being contracted by the extending behavior.SELECTED DRAWING: Figure 3 |
