US 11,697,238 B2
Extruder and die for the same
Kiyoshi Handa, Hiroshima (JP); Yohei Shimizu, Hiroshima (JP); Makoto Tojo, Hiroshima (JP); and Jun Kakizaki, Hiroshima (JP)
Assigned to THE JAPAN STEEL WORKS, LTD., Shinagawa-ku (JP)
Appl. No. 16/760,799
Filed by The Japan Steel Works, Ltd., Tokyo (JP)
PCT Filed Nov. 1, 2017, PCT No. PCT/JP2017/039477
§ 371(c)(1), (2) Date Apr. 30, 2020,
PCT Pub. No. WO2019/087324, PCT Pub. Date May 9, 2019.
Prior Publication US 2020/0338801 A1, Oct. 29, 2020
Int. Cl. B29C 48/30 (2019.01); B29C 48/06 (2019.01); B29C 48/345 (2019.01)
CPC B29C 48/302 (2019.02) [B29C 48/06 (2019.02); B29C 48/345 (2019.02)] 5 Claims
OG exemplary drawing
 
1. An extruder comprising: a barrel to which raw material is supplied; a screw that is driven to rotate in the barrel in order to process the raw material together with the barrel; and a die that is provided at a discharge point of the barrel and that discharges the raw material that has been processed, wherein the die includes a first flat plate having at least one first hole and a second flat plate having at least one second hole, wherein the first flat plate and the second flat plate are arranged adjacent to each other along a longitudinal axis of the barrel, and at least either the first flat plate or the second flat plate is configured to be continuously movable relative to the other flat plate such that an overlapping part of the first hole and the second hole is configured to be varied continuously between 0% overlap and 100% overlap, and the first and second flat plates are concentric, at least either the first flat plate or the second flat plate is rotatable about the longitudinal axis of the barrel, and all of the at least one first hole and the at least one second hole are arranged remote from the longitudinal axis of the barrel.