Stora Enso Oyj

Wetend Technologies Oy

Wetend Technologies Ltd.

Sulzer Management Ag

Valmet Technologies Oy

Wetend Technology Oy

Jussi Matula

Isto Heiskanen

Kaj Backfolk

Jari Räsänen

Jouni Matula

Olavi Imppola

Karri Tahkola

Matti Vakevainen

Esa Saukkonen

Sami Virtanen

Matti Koivikko

Jari Mäkinen

Kalle Tiitinen

Matti VÄKEVÄINEN

Jouni MÄKINEN

A method of dosing a nanocellulose suspension in gel phase into a second suspension, wherein the method comprises the steps of: providing said nanocellulose suspension in gel phase; providing said second suspension; bringing said nanocellulose suspension in gel phase in contact with said second suspension; wherein the method comprises a step of subjecting said nanocellulose suspension in gel phase to a shear rate of more than 500 l/s, simultaneously with and/or immediately prior to the step of bringing said nanocellulose suspension in gel phase and said second suspension in contact with each other.

Dosing of nanocellulose suspension in gel phase

A method of and an arrangement for adding a chemical to an approach flow system of a fiber web machine by mixing of a retention chemical to a fibrous stock flowing in an approach flow system of a fiber web machine by a mixer () between the attenuator () and the headbox ().

Method of and an arrangement for adding a chemical to an approach flow system of a fiber web machine

The present invention relates to a centrifugal pump, the impeller of which comprises a shroud () with at least one solid and rigid working vane (), and at least one solid and rigid rear vane (), the at least one working vane () having a leading edge region (), a trailing edge region (), a central region (C), a side edge, a pressure face () and a suction face (), the at least one solid and rigid rear vane () having a trailing edge region, a side edge, a pressure face and a suction face. The trailing edge region () of the at least one working vane () is rounded by means of a rounding to have a thickness greater than that in the central region (C).

Impeller for a centrifugal pump

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 arrangement for mixing a fluid to a process liquid by using at least one mixing station and a method of operating the arrangement to feed injection or mixing liquid to injection mixers arranged on a periphery of a flow pipe transferring a process liquid. The arrangement and the method are applicable for the injection of mixers and chemical mixing in processes for the wood processing industry.

Arrangement for mixing a fluid to a process liquid and a method of operating the arrangement

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

Growing community of inventors

Savonlinna, Finland

Jussi Matula