Process for making a membrane for fluid-control apparatuses, and membrane made thereby

摘要

It is disclosed a process comprising the steps of making the first layer of a membrane with a first plastic material chemically compatible with the fluid to be treated, making a second layer of a second plastic material defining the mechanical performance of the membrane and coupling said layers, the process consisting in: inserting a first plastic material selected from polyolefines, polyamides, polyesters, vinyl resins into a moulding cavity ( 2 ) and injection-moulding at least one second plastic material defined by a thermoplastic elastomer (TPE) in said moulding cavity ( 2 ) to form at least one second layer ( 8 ) directly joined to the first layer ( 7 ).