Abstract: The invention relates to a method for manufacturing a cable including the following steps: Manufacturing of a cable with an electrical conductor which comprises at least one part consisting of a cross-linkable polymer; coiling of said cable to form a bunch; treating of said bunch under process conditions, which cause a cross linking of the cross-linkable polymer. The invention further relates to an apparatus for manufacturing a cable, which comprises at least one element formed by a cross-linkable polymer, including: A polymer applying device by which said polymer component is put on, put into or led in any other manner to the cable; a coiling device by which said cable, that was supplied with a cross-linkable polymer, is coiled to form a bunch; a bunch treatment device in which said bunch is treated under predetermined process conditions which at least partially cause the cross-linking of said cross-linkable polymer component.

Abstract: A process and device are disclosed for producing a package of elongated winding material. A winding bobbin (50) has a conical winding core (52) and a first detachable flange (53) arranged at the side of the winding core (52) having the smaller diameter, and a second flange (54) arranged at the other side of the winding core (52). The winding bobbin (50) is held in a winding device by means of bobbin holding members (103, 104) which center both flanges (53, 54) and are supported on their surface opposite to the winding core (52). The elongated winding material (D) is then wound on the bobbin (50), the winding process being controlled in such a way that a predetermined type of bobbin is obtained. In particular when a plastic bobbin (50) is used, the package is easy to transport but is at the same time very resistant, so that additional packaging measures may be dispensed with. Packaging waste may thus be almost entirely avoided.

Abstract: A method for producing a coreless coil of strand-like material in which the strand-like material, which may be wire, insulated or non-insulated cable, glass fiber or the like, is wound in several layers on a substantially cone-shaped winding spool. The layers are inclined with respect to the longitudinal axis of the winding spool. The first pair of layers each contain N.sub.1 windings. The second pair of layers each contain N.sub.2 =N.sub.1 +.DELTA.N windings, where N is a constant value. In this manner, the number of windings for consecutive layer pairs is increased until the total number of possible windings for a predetermined winding pitch is reached. The layers of each pair are wound by a take-up apparatus that moves in a first direction for winding one of the layers of a pair and in a second opposite for direction for winding the other layer of the pair. A coreless coil produced by such a method, an apparatus for carrying out the method, and an apparatus for unwinding a coreless coil also are disclosed.