EP 0954399 A4 20030604 - MULTI-CHANNEL STRUCTURES AND PROCESSES FOR MAKING SUCH STRUCTURES
Title (en)
MULTI-CHANNEL STRUCTURES AND PROCESSES FOR MAKING SUCH STRUCTURES
Title (de)
MEHRKANALIGE STRUKTUREN UND VERFAHREN ZUR HERSTELLUNG SOLCHER STRUKTUREN
Title (fr)
STRUCTURES MULTICANAUX ET LEURS PROCEDES DE FABRICATION
Publication
Application
Priority
- US 9720418 W 19971105
- US 74373196 A 19961106
- US 74435996 A 19961106
Abstract (en)
[origin: WO9819812A1] A method for making multi-channel structures suitable for use as filters, catalyst carriers or the like. A composite rod (11) comprising an outer shell (12) and an inner core (13) is formed of respective mixtures of powders. The mixture for the outer shell comprises a sinterable powdered structural material such as ceramics, metals, intermetallics, and a powdered binder. The inner core comprises a powdered channel-forming filler material that can differentially be removed from the structural material of the shell. The composite rod (11) may be deformed, as by extrusion, to reduce its diameter. A bundle (14) of composite rods (11A) is assembled and deformed, as by extrusion, to reduce the diameter of the bundle (14) and of its component composite rods. Further bundles (17) of the reduced diameter bundles (14A) of composite rods may be likewise deformed by extrusion to reduce further the diameter of the component composite rods of the successive bundles, thereby also increasing the number of such rods per given cross section area of the bundle. The final assembly of bundles (17A) is consolidated and the binder is removed, as by heating, followed by removal of the inner cores of the composite rods of the assembly of bundles and sintering of the remaining structure of ceramic or metal, as the case may be. In certain embodiments, the material of the inner core may be removed by heating it in the course of heating the structure to perform the sintering step. In other embodiments, the binder and/or filler material may be removed by means of a suitable solvent.
IPC 1-7
B22F 3/11; B01D 39/20; B01D 63/06; B01D 69/08; B01J 35/04; C04B 35/00; C04B 37/00; F28F 21/04
IPC 8 full level
C04B 38/06 (2006.01); B01D 39/20 (2006.01); B01D 63/06 (2006.01); B01D 69/08 (2006.01); B01J 35/04 (2006.01); B22F 3/11 (2006.01); B22F 5/00 (2006.01); C04B 35/00 (2006.01); C04B 37/00 (2006.01); F28F 21/04 (2006.01); B29C 43/00 (2006.01); G01N 30/60 (2006.01)
CPC (source: EP)
B01D 39/2075 (2013.01); B01D 63/066 (2013.01); B01D 69/08 (2013.01); B01J 35/56 (2024.01); B22F 3/1103 (2013.01); B22F 3/1121 (2013.01); B22F 3/1134 (2013.01); B32B 18/00 (2013.01); C04B 35/00 (2013.01); F28F 21/04 (2013.01); B22F 2998/00 (2013.01); B29C 43/006 (2013.01); B29C 2043/3668 (2013.01); C04B 2235/6562 (2013.01); C04B 2235/6567 (2013.01); C04B 2237/343 (2013.01); C04B 2237/348 (2013.01); C04B 2237/365 (2013.01); C04B 2237/62 (2013.01); C04B 2237/66 (2013.01); C04B 2237/76 (2013.01); G01N 30/60 (2013.01); G01N 30/6043 (2013.01); G01N 30/6052 (2013.01)
C-Set (source: EP)
Citation (search report)
- [X] EP 0315208 A2 19890510 - NORTON CO [US]
- [A] US 4026746 A 19770531 - STRAW RAYMOND L
- See also references of WO 9819812A1
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 9819812 A1 19980514; AU 5106598 A 19980529; CA 2309201 A1 19980514; EP 0954399 A1 19991110; EP 0954399 A4 20030604; JP 2001504077 A 20010327
DOCDB simple family (application)
US 9720418 W 19971105; AU 5106598 A 19971105; CA 2309201 A 19971105; EP 97945635 A 19971105; JP 52182798 A 19971105