Invention Grant
- Patent Title: Honeycomb extrusion die
- Patent Title (中): 蜂窝挤出模具
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Application No.: US11135738Application Date: 2005-05-23
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Publication No.: US07524448B2Publication Date: 2009-04-28
- Inventor: John Charles Rector
- Applicant: John Charles Rector
- Applicant Address: US NY Corning
- Assignee: Corning Incorporated
- Current Assignee: Corning Incorporated
- Current Assignee Address: US NY Corning
- Agent Joseph M. Homa
- Main IPC: B29C47/12
- IPC: B29C47/12

Abstract:
The invention discloses method and apparatus for providing a desired batch flow through desired regions of an extrusion die for forming honeycomb structures, and more particularly to the enhancement of batch flow in the skin-forming region of the die so as to provide a bounding wall of desired thickness and strength about a honeycomb core. Unlike prior methods, a recess or trough of desired depth and width is formed in a desired region of the inlet face of the honeycomb die, which reduces the pressure required to flow batch material through the die in such region. Such reduced pressure requirement translates in an increased flow rate in such region under constant extrusion pressure. Thus by increasing the flow rate through a honeycomb extrusion die in an outer peripheral region of flow in this manner, improved skin formation around a honeycomb core is obtained during the forming process.
Public/Granted literature
- US20060103043A1 Honeycomb extrusion die Public/Granted day:2006-05-18
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