PARALIGN® in the calender section In the calender section the paper Is smoothe- ned and brightened. A paper mill for premium magazine paper showed quality problems In the calender section. In particular, folds production, asymmetric win- ding and paperbreaks occurred. As an example a calender unit Is shown In the picture. The unit Is placed between the ground and the first floor of the machine hall. Because of less space In front of the unit It was hard to access all rolls with traditional optical systems. Thus optical measurements loose accuracy and time by the necessity of additional measurement equipment like mirrors and prisms. The plant engineer took PARALIGN® as an option to the traditional systems. The system works also In narrow space with the same accuracy. Especially no line of sight between the rolls Is The PARALIGN® measurement was performed In a very short period of time - the results were well defined: The Idlers of the calender showed huge horizontal offsets. Thus asymmetric tensions on the paper occurred. The reason for the quality The next page shows the PARALIGN® protocols of the discussed calender before and after the corrections. The Improvement In roll parallelism can be seen clearly. After the alignment the qua- lity standards of the paper met the requirements while the machine availability Increased by a Unwanted vibrations? Advantages of PARALIGN® in the calander Vibration measurement and diagnosis with the better partner. Longer lifetime of consumables: Higher machine availability: ► reduction In paper breaks ► rare replacement of parts results In reduced stoppages Increased quality:

Before alignment Roll face length: 6000 mm Your point of view is green. The machine side blue marked drying cylinder is chosen as reference roll, For further information please see www.PARALIGN.info PARALIGN®* and VIBXPERT* are registered trademarks of PRÜFTECHNIK Dieter Busch AG. No copying or reproduction of this information, in any form whatsoever, may be undertaken without express written permission of PRÜFTECHNIK Alignment Systems GmbH. The Information contained In this leaflet Is subject to change without further notice due to the PRÜFTECHNIK policy of continuous product development. PRÜFTECHNIK...