| 摘要 |
PROBLEM TO BE SOLVED: To provide a screw extruder capable of suppressing the back flow of a raw material generated by internal pressure. SOLUTION: The screw extruder is successively constituted of a cylinder 1 having two communicating inner holes 1a, a feed part 5 having two screws 2 rotatably arranged in the respective communicating inner holes 1a so as to leave a gap mutually and feeding the raw material supplied into the communicating inner holes 1a from the upstream side to the downstream side with respect to the feed direction of the raw material, a kneading part 6 for kneading the raw material fed by the feed part 5 and a discharge part 7 for discharging the raw material kneaded in the kneading part 6 to the outside of the communicating inner holes 1a. A wall part 8 for filling the gap between the respective screws 2 is formed to a part of the feed part 5. COPYRIGHT: (C)2004,JPO |
