| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-port extruding device capable of controlling extruding speed in simultaneous extrusion of a plurality of ports with simple structure. SOLUTION: The multi-port extruding device (1) includes multi-port extruding dies (10) (20a) (20b) having a plurality of extruding ports (23) (24) and a backer (30) which is arranged on the downstream side of these multi-port extruding dies (10) (20a) (20b). Passages (R1) (R2) for cooling medium, which are communicated to the outside are provided by surrounding the extruding ports to at least one extruding port (23) (24) on the mating surface of the multi-port extruding dies (10) (20a) (20b) and the backers (30). COPYRIGHT: (C)2011,JPO&INPIT
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