A method for producing a flexible tube for an endoscope

A method for producing a flexible tube for an endoscope, comprising the steps of: Setting a spiral tube (11) as the innermost layer on a mandrel (20) to provide a space between the outer surface of the mandrel (20) and the inner surface of the spiral tube (11), Applying a melt of the sheath material (1) on said spiral tube (11) such that the casing material (1) penetrates through gaps between adjacent turns of the spiral tube (11) in the intermediate space, Curing the shell material (1) and removing the mandrel (20).