Stora Enso Oyj

Stora Enso Ab

Jan Lif

Isto Heiskanen

Kaj Backfolk

Esa Saukkonen

Jukka Kankkunen

Anna Nyberg Zetterlund

Thorulf Pettersson

Magnus Björklund

Susanne Lindh

The present invention relates to a process for manufacturing a film comprising high amounts of microfibrillated cellulose (MFC), having haptic properties. According to the present invention, a wet web comprising MFC is formed, followed by addition of particles having an average diameter of at least 1 &#x3bc;m to the wet web, followed by dewatering and/or drying. The wet web may be formed for example by wet laid or cast forming methods. The particles may be added to the wet web for example by cast coating or spraying.

Process for production of film comprising microfibrillated cellulose

A method for monitoring the structural state of a fiber web () that is being processed by a fiber web processing machine comprising a fiber web processing station () is described. The method comprises the steps of arranging a generator () and a detector () of a generator-detector unit () on opposite sides of the traveling fiber web () downstream of the fiber web processing station; bringing the generator to emit an ultrasonic wave; bringing the detector to receive the ultrasonic wave; sending a signal representing the received ultrasonic wave to a control unit (); and, in the control unit, analyzing the signal and extracting a value from the signal representing a measure of the received ultrasonic wave. A system for monitoring the structural state of a fiber web is also described.

Method and a system for monitoring structural changes of a fiber web

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Hammarö, Sweden

Jan Lif