Coating processes – Coating by vapor – gas – or smoke
Reexamination Certificate
2007-12-04
2007-12-04
Meeks, Timothy (Department: 1762)
Coating processes
Coating by vapor, gas, or smoke
C427S282000
Reexamination Certificate
active
11000690
ABSTRACT:
Apparatus and a method for selectively vapor-coating an extrusion die to extrude honeycombs with desired distributions of web thicknesses, wherein at least one perforated impedance or preferential coating plate with a desired pattern of holes is positioned adjacent to, but spaced apart from, a face of the extrusion die to be coated, whereby a coating gas passed through the coating plate and into the die imparts a desired coating distribution to the extrusion die slots that is effective to closely control the web thickness distribution in honeycombs extruded therefrom.
REFERENCES:
patent: 5952079 (1999-09-01), Andou et al.
patent: 6193497 (2001-02-01), Suzuki
patent: 7132124 (2006-11-01), Matsumoto et al.
patent: 0 674 018 (1999-06-01), None
Avery James F.
Brew Thomas W.
Khanna Samir
Shalkey Mark A.
Sun Yawei
Corning Incorporated
Homa Joseph M.
Meeks Timothy
Sterre Kees van der
Stouffer Kelly M
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