Process for producing a device for use in filtration, chemical processes or electrochemical processes comprising a porous layer and a supporting layer and device obtainable by the process

Abstract

A process for producing a device for use in filtration, chemical processes or electrochemical processes is described, the device comprising a porous layer and a supporting layer comprising channels running in the plane of the supporting layer and being open towards the porous layer. The process comprises providing a stack comprising a) the porous layer, or a green part of the porous layer which green part contains a sinterable material powder and a binder, or a partially debound green part of the porous layer, and b) a green part of the supporting layer. The process further comprises the green part of the supporting layer being applied on the porous layer or the green part of the porous layer or the partially debound green part of the porous layer by additive manufacturing from a sinterable material powder and a binder in a layer-by-layer wise manner; sintering the green parts; and thermally bonding the stack. The process allows for producing devices having a structure that is optimized with regard to current flow, reactant flow and resistance to pressure differentials, and for producing the devices in an economical way.

Dependencies are inferred from the claim text.