The Japan Steel Works, Ltd.

Makoto Tojo

Jun Kakizaki

Daigo Saga

Yohei Shimizu

Yoshitaka Kimura

Kiyoshi Handa

Yoshihiko Iwamoto

An extruder which can be applied to various types of resin and elastomer without having to replace a die is provided. An extruder of the present inventions has: a barrel to which raw material, that is raw elastomer or raw material resin, is supplied; a screw that is driven to rotate in the barrel in order to process the raw material together with the barrel; and diethat is provided at a discharge point of the barrel and that discharges the raw material that has been processed. Dieincludes first flat platehaving at least one first holeand second flat platehaving at least one second hole, wherein first flat plateand second flat plateare arranged adjacent to each other along longitudinal axis Xof the barrel, and at least either first flat plateor second flat plateis movable relative to the other flat plate such that an overlapping part of first holeand second holecan be varied.

Extruder and die for the same

A twin screw extruder () for producing a fiber-reinforced resin composition, which is obtained by charging the extruder with a thermoplastic resin and reinforcing fibers in roving form and the reinforcing fibers being fibrillated/cut and being dispersed/kneaded into the thermoplastic resin, comprises: a plate-shaped blade (), which protrudes from the inner surface of a cylinder () and faces a screw () and the longitudinal direction of which faces the axial direction of the cylinder; and a height adjustment means () for adjusting the gap between the blade () and the screw ().

Twin screw extruder

An extruder () includes a cylinder () and a screw (), and one or more front vents () are provided on the cylinder () upstream of a hopper () and downstream of a rear vent (). The cylinder () is provided with, between the hopper () and the rear vent (), a liquid supply device () for spraying water into the cylinder () to cool an interior thereof and a liquid discharge port () that is opened in a lower portion of the cylinder ().

Extruder  provided with vents

A vent assembly device for a twin-screw extruder includes a vent assembly () that has a vent opening () and that is provided in a cylinder () of a twin-screw extruder () having a left axis-side screw () and a right axis-side screw (). The size of at least the vent opening () of the vent assembly () can be freely modified by forming the vent assembly () from a plurality of vent assembly units () and by providing the plurality of vent assembly units () for one vent opening ().

Growing community of inventors

Hiroshima, Japan

Makoto Tojo