公开(公告)号：WO2020236474A1

公开(公告)日：2020-11-26

申请号：PCT/US2020/032611

申请日：2020-05-13

Applicant: CORNING INCORPORATED

Inventor： BREW, Thomas William ,  DUBOTS, Thomas Mark ,  SARIEGO, Kenneth Charles ,  SHEN, Min

IPC: B28B3/26 ,  B23P15/24 ,  B29C48/11 ,  B29C48/30

Abstract: A honeycomb extrusion die (120) includes a die body (342) including an inlet face (315) and an outlet face (341). A plurality of pins (330) extend from the die body (342), wherein the pins (330) are arranged to define primary (312P) and secondary slots (312S). Primary slots (312P) include primary slot inlets (320P) and primary slot outlets (3120) and the secondary slots (312S) include secondary slot inlets (312SI) and secondary slot outlets (312SO). Feedholes (317) extend within the die body (342), the feedholes (317) including feedhole outlets (319), wherein the feedhole outlets (319) intersect only with the primary slot inlets (320P). First surface indentation features (345) extend into side surfaces (332) of the plurality of pins (330) defining the primary slots (312P). The first surface indentation features (345) are spaced from the primary slot outlets (3120). The secondary slots (312S) are devoid of surface indentation features. Other die bodies, extruders, and methods are disclosed.