Abstract: The method of manufacturing a plurality of bundles of semipermeable hollow fibers for a membrane device from a sheet of fibers (19) formed by winding a fiber or a stranded set of fibers (11) on a drum (1, 2) consists in:cutting the sheet of fibers (19) on the drum (1, 2) along a line of cut that is substantially parallel to the axis of the drum (1, 2);laying out the sheet of fibers (19) on a plane (14);rolling up the sheet of fibers (19) in a direction perpendicular to the line of cut to form a single bundle of fibers (45); andcutting up the single bundle of fibers (45) into a plurality of bundles for a membrane device.

Abstract: The method of manufacturing a plurality of bundles of semipermeable hollow fibers for a membrane device from a sheet of fibers (19) formed by winding a fiber or a stranded set of fibers (11) on a drum (1, 2) consists in:cutting the sheet of fibers (19) on the drum (1, 2) along a line of cut that is substantially parallel to the axis of the drum (1, 2);laying out the sheet of fibers (19) on a plane (14);rolling up the sheet of fibers (19) in a direction perpendicular to the line of cut to form a single bundle of fibers (45); andcutting up the single bundle of fibers (45) into a plurality of bundles for a membrane device.

Abstract: The invention permits the ends of a hollow fiber bundle to be dried, without drying the intermediate portions of the bundles, thereby enabling the bundle to be potted. The apparatus includes at least one drying member having two couplings for coupling a source of forced hot air to respective ends of a sheath designed to contain a bundle of hollow fibers. At each of its ends, the sheath includes at least one axial opening through which the hot air penetrates into the sheath, and at least one lateral opening through which the hot air leaves the sheath after passing over the ends of the fibers. The inlet air flow rate to the sheath and the dimensions of the openings are selected so that all of the air entering each of the ends of the sheath leaves via a corresponding lateral opening.

Abstract: The invention relates to an apparatus with hollow fibres, comprising: an elongate enclosure (41) at both ends of which there is a partition (48) supporting the open ends of a bundle of hollow fibres (47), the enclosure (41) being closed at each of its ends by a cover (50).This apparatus is characterized in that it comprises a circular resin-based seal (55) arranged on the periphery of the partition (48) and in the proximity of the hollow fibres (47), this seal (55) forming to the inside of the enclosure a concave connecting surface (56) joining without substantial break of continuity the inner surface (52) of the cover (50) to the partition (48) or to the end surface (49) of the enclosure.This apparatus can be used in particular as an artificial kidney.