Twin extruder
AssigneeThe Japan Steel Works, Ltd.
InventorsNobuhisa Kobayashi, Yukio Imamura
Life of this patent
Estimating the term…
Abstract
In a twin extruder wherein an underwater cutting apparatus 12 is connected, via a gear pump 9, to an discharge port 8 of a cylinder 1 which houses therein twin screws both ends of which are supported, both sides of both screws 2, 3 are material conveying sections 5a, 5b having flights of small lead, the downstream sides of the respective material conveying sections 5a, 5b are kneading sections 6a, 6b having flights of large lead, both kneading sections 6a, 6b are connected about the center of the screws 2, 3, and the cylinder 1 positioned at the center of the screws 2, 3 is provided with the discharge port 8.
Claims4
A twin extruder comprising:
- a cylinder accommodating twin screws therein, both ends of said twin screws being supported and said twin screws rotating in opposite directions;
- an underwater cutting apparatus connected to a discharge port of a cylinder through a gear pump;
- material conveying sections having flights of first lead, said material conveying sections positioned at both sides of both screws;
- and
- kneading section having flights of second lead which is bigger than first lead, said kneading section positioned at the downstream sides of the respective material conveying sections, both kneading sections being connected approximately at the center of the screws, said cylinder positioned at the center of the screws being provided with the discharge port.
Dependencies are inferred from the claim text.