DEVICE SUITABLE FOR THE TREATMENT OF A FLUID AS WELL AS A METHOD AND MACHINE SUITABLE FOR THE MANUFACTURE OF SUCH A DEVICE

摘要

A device which is suitable for the processing of at least one fluid is provided with at least one elongated foil which is formed in a number of reciprocating foil layers. Between two opposite layers of foil a spacer is situated that is permeable at least parallel to the foil layers. The foil layers and interposed spacers extend spirally around a central axis wherein folding lines between two foil layers extend substantially parallel to the central axis. Each spacer is coupled to at least an end near the central axis with a support extending parallel to the central axis where of the supports near the central axis first supports are situated between two foil layers which foil layers are connected to one another near the central axis whereas second supports are situated between two successive first supports.