Stora Enso Oyj

Stora Enso Ab

Jan-Erik Nordström

Jari Räsänen

Laura Nousiainen

Petteri Saarinen

Petteri Kostiainen

Method for producing a sterilized foam web, wherein the method comprising the steps of preparing a wet foam (), feeding the wet foam () to a head box (), distributing the wet foam by the head box (), treating the wet foam () with electron beam radiation () to immobilize and sterilize the wet foam (), receiving the electron beam treated foam on a moving wire () to form a foam web (), pressing and the foam web (), and drying the foam web ().

Method for producing a foam web

The present invention relates to a process for dewatering a slurry comprising a microfibrillated cellulose wherein the process comprises the following steps of providing a slurry comprising a microfibrillated cellulose and a liquid, subjecting the slurry to a first mechanical pressure in order to dewater the slurry, and subjecting the slurry to a second mechanical pressure which second pressure is higher than the first pressure.

Process for dewatering microfibrillated cellulose

The present invention relates to a process for producing a paper or paperboard product which process comprises the steps of providing a first headbox with a furnish comprising fibers, which furnish forms at least one layer of the paper or paperboard product, providing the headbox with a non-fibrous high consistency composition, which composition forms at least one additional layer of the paper or paperboard product and conducting the layers onto a wire forming a multilayer web which is further dewatered and dried forming the paper or paperboard product. The invention further relates to a paper or paperboard produced according to the process and a headbox used in the process.

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Nacka, Sweden

Jan-Erik Nordström