Stora Enso Oyj

Wetend Technologies Ltd.

Wetend Technologies Oy

Matti Vakevainen

Isto Heiskanen

Jari Räsänen

Jouni Matula

Jussi Matula

Olavi Imppola

Karri Tahkola

Jari Rasanen

Lars Axrup

Henri Kastinen

Petri Suhonen

Saija Pollanen

Jani Korhonen

Teemu Tiainen

A ply for a paper and paperboard made from a ply substrate material, wherein the ply comprises a hybrid material, in an amount of 1-25 wt-% of the ply, wherein the hybrid material is introduced into a target suspension of the short circulation of a fibrous web forming process of a fibrous web machine, in an in-line process, wherein said target suspension forms the ply substrate material, and the hybrid material comprises an alkaline earth carbonate precipitated onto or into fibers or fibrils of a nanofibrillated polysaccharide.

Ply for a board from an in-line production process

The present invention relates to a method of producing precipitated calcium carbonate (PCC) where a retention/strength enhancing chemical is added to milk of lime to form a mixture thereof prior to adding the mixture of the retention/strength enhancing chemical and milk of lime to paper making stock in a pipeline leading to a headbox of a paper making machine, whereafter carbon dioxide is introduced to the paper making stock, and the carbonation reaction between milk of lime and carbon dioxide is allowed to proceed in the presence of both fibers and the retention/strength enhancing chemical.

Method of providing fiber web making furnish with filler, and paper or paper board

An in-line production method for providing a liquid flow of at least one additive in the short circulation and into the liquid flow of a paper making stock of a fiber web machine by feeding, the liquid flow of the at least one additive to the liquid flow of the short circulation, wherein a suitable amount of a microfibrillated cellulose or nanofibrillated polysaccharide is provided substantially simultaneously with the feeding of liquid flow of the at least one additive.

In-line production method for paper making process

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Imatra, Finland

Matti Vakevainen