Honeycomb Extrusion Die Apparatus And Methods
OwnerThomas William Brew, Keith Norman Bubb +1inventors
InventorsThomas William Brew, Keith Norman Bubb, Michael James Lehman
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Abstract
A die apparatus and methods of making a die body can provide a skin slot extending through a honeycomb network and an end portion of a plurality of pins, wherein the skin slot includes opposed sides that are each in fluid communication with the honeycomb network. In further embodiments, methods are provided for co-extruding a honeycomb body and an integral skin with a die body including a skin slot.
Claims20
A honeycomb extrusion die apparatus comprising:
- a die body including an array of pins that are spaced apart to define a honeycomb network of discharge slots, and a skin slot extending through the honeycomb network and an end portion of a plurality of the pins, wherein the skin slot includes opposed sides that are each in fluid communication with the honeycomb network.
A method of making a die body configured to co-extrude a honeycomb body and an integral skin, the method comprising the steps of:
- providing an array of pins that are spaced apart to define a honeycomb network of discharge slots;
- and subsequently,
- providing a skin slot extending through the honeycomb network and an end portion of a plurality of the pins, wherein the skin slot includes opposed sides that are each in fluid communication with the honeycomb network.
A method of co-extruding a honeycomb body and an integral skin with a honeycomb extrusion die apparatus including a die body with an array of pins that are spaced apart to define a honeycomb network of discharge slots, a skin slot passing through the honeycomb network and an end portion of a plurality of the pins, wherein the skin slot includes opposed sides that are each in fluid communication with the honeycomb network, and a mask member, the method comprising the steps of:
- mounting the mask member with respect to the die body to cover an outer portion of the honeycomb network;
- and
- extruding batch material through the die body such that the honeycomb body is formed by an inner portion of the honeycomb network and the integral skin is formed by batch material passing through a plurality of the discharge slots in fluid communication with the skin slot.
Dependencies are inferred from the claim text.