| 摘要 |
An application head (11) for the contact-free application of liquid media such as liquefied thermoplastic plastics or melted hot-melt adhesives to a length of material (22) which is movable relative to the application head. The head includes a housing (12), a cylinder chamber (20) which is provided in the housing and in which a cylinder slide (13) is supported so as to be rotatingly driveable, and a nozzle device (18) for discharging liquid medium. The nozzle device (18) is controllable by the cylinder slide (13) and extends transversely to the direction of movement of the length of material. The cylinder slide (13), in its cylindrical surface, includes first surface grooves (27) which are supplied with liquid medium and which, as a function of the rotational position, are able to communicate with the nozzle device (18). The cylinder slide (13), in its cylindrical surface, also includes second surface grooves (31) which accommodate sealing strips (32) which, with pre-pressure, rest against the surface of the cylinder chamber (20).
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