HOLLOW FIBER, HOLLOW FIBER BUNDLE, FILTER AND METHOD FOR THE PRODUCTION OF A HOLLOW FIBER OR A HOLLOW FIBER BUNDLE

摘要

The fiber has a constricted opening extending over its entire length, where an inner diameter of the fiber is reduced in relation to longitudinal sections of the fiber. The longitudinal sections border on the constricted opening. A transient area is arranged between the opening and an area, which is not formed by the opening, where length of the transient area. A position of the opening is variable according to requirements. The fiber is made of semi-permeable material. An independent claim is also included for a method for producing a fiber.