Device for the contact-free application of a strip of liquid to a moving web of material

An apparatus for the contact-free application of a liquid strip, on a moving web of material, comprising at least one application head, which is provided with at least one nozzle arranged at a distance from the web of material and a valve adapted to put the nozzle into and out of operation and adapted to be operated in accordance with the desired pattern of application, wherein the timing of the valve is modified to depart from basic values, which are dependent on the application pattern, in accordance with a correction value which is a function of the speed of the web of material and at least the distance of the web from the nozzle, the apparatus further comprising a sensor adapted to respond to the web of material and a program control device adapted to be timed by said sensor, said program control device being coupled in series with an auxiliary control device for determining the correction value, said auxiliary control device comprising a calculating device with an input device for manual input of parameters entering into the correction value, the apparatus further comprising means adapted to derive a time factor from the parameters and means to multiply such time factor by the speed of the web of material so as to produce the correction value, the correction value being subtracted by a comparator from the basic values which are a function of the distance of the web from the nozzle.