| 摘要 |
The invention relates to a device for corona treating a web-like material. The device comprises a roll (1) and an electrode array (2), which is located opposite said roll and which has at least one longish electrode (4) that extends parallel to other electrodes and to the roll axis (3). Between the roll (1) and each electrode (4), an electric corona discharge can be generated for treating the web-like material guided through at that location, and the electrodes (4) can pivot away from the roll (1) against the action of a spring (7). Prior art devices of this type have a drawback in that the ceramic tubes or rods are damaged in the occurrence of a bulging. The aim of the invention is to improve the design of a corona treatment device as to prevent the ceramic tubes or rods from becoming damaged. To this end, each individual electrode (4) of the electrode array (2) is, independent of the other electrodes (4), mounted in an articulated manner around an axis parallel to the roll axis (3) and in a manner that permits it to be radially displaced with regard to the roll axis (3) against the action of a spring (7). |
