From paper manufacturing to glossy magazines

Innovations in the paper and printing industry increase quality and raise production efficiency through to the final product. It is becoming ever more important in the various production stages to capture surface topography and roughness and to control the manufacturing process accordingly.
NanoFocus offers high-precision optical metrology solutions for a wide range of measurement tasks. For example, the µsurf mobile 3D microscope acquires structures on rolls down to nanometer precision directly in the production process. µscan offers maximum flexibility for contactless measurement of large areas, such as dry screens or felt pads. All measurement processes through to the analysis protocol can be automated.

 Paper machine clothing

Screen absorption rolls regulate properties in the manufacturing process - such as formation and filler distribution, in the manufacturing process. Transportation with the continuous screen fabric must be characterized precisely, e.g. by means of the bearing ratio between screen and paper. The µscan custom captures the dry screen without any problems. Geometric measurements are possible immediatly in the µsoft control software interface. Typical parameters, e.g. the load ratio, can be calculated on the basis of the measurement data.


Products: µscan custom, µsoft analysis

 Dry felt

In the drying process in paper production, excess water is expelled with felt rolls. The felt structure and contact pressure determine properties such as silkiness and roughness of the paper. With knowledge of the felt topography, these parameters can be optimized and a consistently high paper quality guaranteed. The production costs can be reduced. The µsurf 3D topometer and µscan profilometer can be used for successful measurement and analysis with speed and precision.


Products: µsurf custom, µsurf mobile, µscan custom, µsoft analysis

 Printing rolls - rotogravure

In the rotogravure technique, structures are applied to the printing roller by laser, electromechanical engraving or etching. The machining process has to be monitored and optimized for each of these techniques. For this purpose, the topography of the roller structures is determined directly on the roller using the µsurf mobile. The evaluation of extrusion volumes and the geometry of structures proceed automatically, as does the calculation of roughness.



Products: µsurf mobile, µsurf explorer, µsurf custom, µsoft analysis

 Transport rolls

The paper is transported through the production machine by rubber rolls. These rolls require specific surface properties to ensure even transport without damaging the paper or print. Using µsurf mobile, the roughness and topography can be captured at high speed even on black rolls. Wear can be detected and characteristic values recorded with the µsoft analysis program.


Products: µsurf mobile, µsurf explorer, µsurf custom, µsoft analysisµsoft analysis

 Flexoprinting rolls

In the flexoprinting technique, ink is applied on the flexosleeve by screen rolls. To ensure a uniform uptake and application of ink, the roller structure must comply with certain geometric specifications. The required quality parameters can be captured and calculated with µsurf mobile.



Products: µsurf mobile, µsurf explorer, µsoft analysis

Contact:
NanoFocus, Inc.
Dr. Christian M. Wichern

Innsbrook Corporate Center
4470 Cox Road, Suite 250
Glen Allen, Virginia 2306

Tel: ++1 (804)-228-4195
Fax: ++1 (804)-527-1816
E-mail: solutions@nanofocus-us.com
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NanoFocus, Inc.

Tel.: 1 804-228-4195
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