Twin screw extruder
AssigneeThe Japan Steel Works, Ltd.
InventorsYoshitaka Kimura, Makoto Tojo, Daigo Saga
Life of this patent
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Abstract
A twin screw extruder (10) 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 (15), which protrudes from the inner surface of a cylinder (11) and faces a screw (20) and the longitudinal direction of which faces the axial direction of the cylinder; and a height adjustment means (16) for adjusting the gap between the blade (15) and the screw (20).
Claims9
A twin screw extruder for producing a fiber-reinforced resin composition, in which a thermoplastic resin and roving-like reinforced fibers are fed and the reinforced fibers are defibrated and cut to be dispersed and kneaded in the thermoplastic resin, the extruder comprising:
- a plate-shaped blade protruding from an inner surface of a cylinder toward helical screw elements having a pitch, a length of the blade being directed in a screw axis direction is greater than the pitch;
- and
- a height adjuster configured to adjust a gap between the blade and the screw.
A cylinder for a twin screw extruder comprising:
- A plate-shaped blade protruding inward toward helical screw elements along a screw axis further than an inner surface of the cylinder in a direction perpendicular to the screw axis, a length direction of the blade being directed in the screw axis direction is greater than a set pitch of screw elements of the screw.
Dependencies are inferred from the claim text.