Patent ID: 8496858

Claim:
A method for producing a glass-fibre spool having a multilayer, self-supporting winding ( 12 ) of a glass fibre ( 13 ) for transmission of information which can be unwound from the winding interior, in which the glass fibre ( 13 ) is wound in a cross-over pattern onto a rotatable winding former to form a winding ( 12 ), and the winding former is subsequently removed from the winding ( 12 ), wherein said method comprises winding the glass fibre ( 13 ) in a cross-over configuration onto the winding former so that the winding ( 12 ) has a crossed-over winding pattern; impregnating the winding ( 12 ), with the winding former left in it, with an impregnation substance which is chemically inert, is resistant to seawater, is liquefied by heat and is based on hydrocarbon, wherein a predetermined impregnation level of the winding ( 12 ) is set by dripping off a portion of the impregnation substance; cooling the winding ( 12 ) to below the phase transition temperature of the impregnation substance while rotating the winding former and which is aligned horizontally; and removing the winding former from the cooled-down winding ( 12 ).