Abstract: In a process of manufacturing a channel plate assembly including a plurality of partial plates confining passages for a first medium which continuously define on all sides in direction of flow and interconnected by a plurality of spacers spaced apart in the direction of flow, the spacers are fixed in a fixture and joined to a first plate, and then the spacers are joined to another plate in a fixture on a side which faces away from the first plate.

Abstract: A channel plate assembly comprises parallel plates, which are joined to each other and define passages for a first flowing fluid. Each of said passages is continuously defined on all sides in the direction of flow. Parallel plates are interconnected by spacers, which are spaced apart in the direction of flow and have a width that is smaller than the width of each passage which is continuously defined in the direction of flow. A process of manufacturing the channel plate assembly, two fixtures for use in carrying out the process and the use of the channel plate assembly for supplying and/or discharging a first flowing fluid in a plate apparatus are provided.