Conical winding of elongated material

An arrangement of elongated material wound in a plurality of layers on a spool,

• said spool comprising a cylindrical core, a bottom flange and a top flange,
• a first series of layers forming a conical basis of elongated material on the core so that elongated material is present at the bottom flange in a larger amount than at the top flange,
• a second series of layers being wound over the conical basis and extending from the bottom flange to the top flange thereby keeping a conical form of the wound elongated material, wherein
• the conical basis is formed by:
• a first layer being wound on the cylindrical core between the bottom flange and the top flange in a first number of windings,
• a second layer being wound on the first layer in a second number of windings, said second number of windings being equal to or smaller than the first number of windings, said second layer reaching the bottom flange but not necessarily the top flange,
• additional layers being wound on the second layer in numbers of windings where these numbers of windings decrease on average as the conical basis is being formed, said additional layers reaching the bottom flange.