Method for extruding honeycombs
AssigneeCorning Incorporated
InventorsMeryle D. W. Adler, Rodney D. Bagley, Rodney I. Frost, John G. Lanning, H. Gordon Shafer, Jr.
Life of this patent
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Abstract
An extrusion die is used for producing ceramic honeycomb materials. It is particularly useful in producing such extrudates in sheet form by configuring the die in the form of a cylinder and providing a cutting device proximate to the exterior of the cylinder so that when relative rotation is imparted between the cutter and the cylinder, a honeycomb sheet is removed. A cover can be provided over the exterior surface of the cylindrically-shaped die to permit formation of honeycomb extrudates in pellet form.
Claims15
A method of forming honeycomb structures in sheet form comprising:
- providing an extrusion system comprising:
- an extrusion die with a continuous outer surface and having intersecting passages configured to discharge material extruded from said extrusion die in a honeycomb configuration and
- cutting means positionable proximate to the outer surface of said extrusion die to cut material extruded through the intersecting passages;
- advancing formable material to said extrusion die, through the intersecting passages, and outwardly from the outer surface to form a honeycomb extrudate;
- and
- imparting relative rotation between said extrusion die and said cutting means, whereby said cutting means removes the honeycomb extrudate from the outer surface of said extrusion die as an elongate sheet.
A method of forming honeycomb structures in ring form comprising:
- providing an extrusion system comprising:
- an extrusion die with a longitudinally-extending cylindrical outer surface having intersecting passages configured to discharge material extruded from said extrusion die in a honeycomb configuration and
- cutting means having a cylindrical configuration coaxial with said extrusion die, wherein said cutting means has a central opening sufficiently wide to receive the outer surface of said extrusion die, said cutting means having a circumferential sharp edge which defines one end of the opening;
- advancing formable material to said extrusion die, through the intersecting slots, and outwardly from the outer surface to form a honeycomb extrudate;
- and
- imparting relative axial movement between said cutting means and said extrusion die throughout the outer surface, whereby the sharp edge removes a ring-shaped honeycomb extrudate from the outer surface.
A method of forming honeycomb structures in pellet form comprising:
- providing an extrusion system comprising:
- an extrusion die with a continuous outer surface and having intersecting passages configured to discharge material extruded from said extrusion die in a honeycomb configuration;
- cutting means positionable proximate to the outer surface of said extrusion die to cut material extruded through the intersecting passages;
- and
- a covering having a plurality of holes and positioned over the outer surface;
- advancing formable material to said extrusion die, through the intersecting passages, outwardly from the outer surface, and through the holes of said covering to form a honeycomb extrudate;
- and
- imparting relative rotation between said extrusion die and said cutting means, whereby said cutting means removes the honeycomb extrudate from said covering in pellet form during said imparting relative rotation.
Dependencies are inferred from the claim text.