Back to results
US 2020/0238568 A1Published application
Homogenizer and screen support for extrusion
AssigneeCorning Incorporated
InventorsJames Joseph Bernas, Thomas William Brew, Jason Nelson Brown, Steven John Kremer, Kenneth Charles Sariego
Life of this patent
Estimating the term…
Abstract
Ceramic honeycomb extrusion apparatus and a method of extruding a honeycomb body are disclosed. The honeycomb extrusion apparatus and method utilize a homogenizer plate comprising through holes and a screen support plate comprising screen support plate openings and aligned with the through holes.
Claims20
A ceramic honeycomb extrusion apparatus comprising:
- a honeycomb extrusion die having an inlet face comprising feed holes and an outlet face comprising discharge openings, the discharge openings configured to form a honeycomb extrudate from a stream of material flowing through the honeycomb extrusion die;
- a homogenizer plate positioned upstream from the inlet face of the extrusion die, the homogenizer plate comprising a homogenizer plate inlet side, a homogenizer plate outlet side and a plurality of through holes extending through the homogenizer plate, each of the through holes surrounded by homogenizer plate frame material;
- a screen support plate positioned upstream and adjacent to the homogenizer plate inlet side, the screen support plate comprising a screen support plate inlet side, a screen support plate outlet side, and a plurality of screen support plate openings extending through the screen support plate, wherein the plurality of screen support plate openings are configured to align with the through holes extending through the homogenizer plate, comprise a greater number of screen support plate openings than the plurality of through holes extending through the homogenizer plate and wherein the screen support plate openings do not overlap with the homogenizer plate frame material;
- and
- a screen positioned upstream and adjacent to the screen support inlet side, the screen comprising a screen inlet side and a screen outlet side.
2 more elements
A method of extruding a ceramic honeycomb body, the method comprising:
- directing a feed stream of batch material along an extrusion path through a screen supported by a screen support plate and then through a homogenizer plate,
- wherein the homogenizer plate comprises a homogenizer plate inlet side, a homogenizer plate outlet side and a plurality of through holes extending through the homogenizer plate, and the screen support plate is positioned upstream and adjacent to the homogenizer plate inlet side, the screen support plate comprising a screen support plate inlet side, a screen support plate outlet side, and a plurality of screen support plate openings extending through the screen support plate, wherein the plurality of screen support plate openings are configured to align with the through holes extending through the homogenizer plate and comprise a greater number of screen support plate openings than the plurality of through holes extending through the homogenizer plate.
Dependencies are inferred from the claim text.