Drainage plates for ceramic extrusion
AssigneeCorning Incorporated
InventorEric Lee Thompson
Life of this patent
Estimating the term…
Abstract
A drainage plate (10) for an extruder assembly including a body (12) having an inner edge (14) and an outer edge (15). A seal portion (24) of the body extends radially from the inner perimeter toward the outer perimeter. One of more drainage features are located radially outward of the seal portion. The one or more drainage features extend an axial depth into the body such that a first thickness (t1) of the drainage plate at the seal portion is greater than a second thickness (t2) of the drainage plate at the one or more drainage features. Methods of manufacturing a drainage plate and manufacturing ceramic articles are also disclosed.
Claims12
A drainage plate for an extruder assembly comprising:
- a body having an inner perimeter and an outer perimeter;
- a seal portion of the body extending radially from the inner perimeter toward the outer perimeter;
- one or more drainage features located radially outward of the seal portion;
- and
- wherein the one or more drainage features extend an axial depth into the body such that a first thickness of the drainage plate at the seal portion is greater than a second thickness of the drainage plate at the one or more drainage features, wherein:
- the one or more drainage features comprises a plurality of radially extending channels extending to the outer perimeter,
- the one or more drainage features comprises an annular channel that fully circumscribes the seal portion and is provided on an inner radial side of the plurality of radially extending channels, and
- the seal portion is configured to form a seal with respect to an axially adjacent surface of the extruder assembly and selectively permit liquid phase components of a batch mixture to migrate radially past the seal portion and into and/or along the one or more drainage features.
Dependencies are inferred from the claim text.