liquid material 105 to be impregnated into the rope 101 the impregnation unit 103 comprises chamber 106 the chamber having preferably an inversed t shape and containing a rope inlet 107 for receiving rope 101 a rope outlet for discharging rope 101 and a vacuum outlet 109 a vacuum device not shown such as for example a vacuum pump is operatively connected to the vacuum outlet 109 via a system of pipes for example and is used to reduce the pressure inside the chamber 106 below the atmospheric pressure the reduced pressure inside the chamber 106 will cause a flow of the liquid material 105 from the tank 104 into the chamber 106 between the fibers of the rope 101 during the method of the invention the liquid material 105 is continuously transported from the tank 104 into the chamber 106 and may also accidentally enter the vacuum outlet causing a pollution of the vacuum device to prevent such pollution a buffer vessel not shown may be provided preferably between the vacuum outlet and the vacuum device also a feedback system not shown may be utilized where the liquid material from the buffer vessel is fed back to the tank 104 to replenish the amount of the liquid material 105 the liquid material 105 has a defined liquid level 105 1 inside the tank 104 which is preferably maintained constant during the impregnation process this can be carried out by using for example the feedback mechanism described hereinabove provided with a liquid feeding system not shown and a liquid level detector which triggers a replenishing mechanism when the level 105 1 drops below a set point the.