Upm-kymmene Corporation

Outotec (finland) Oy

Mika Kosonen

Markus Nuopponen

Isko Kajanto

Kari Luukko

Mika Räty

Lauri Paasonen

Timo Koskinen

Heikki Pakarinen

Sami Valkonen

Jouni Huuskonen

Timo Toivanen

Lindsay Davies

Saara Laitinen

Sakari Kauvosaari

Jussi Ventola

The present application relates to a method for preparing a medical product, the method comprising providing an aqueous dispersion of nanofibrillar cellulose, providing a nonwoven fabric, immersing the nonwoven fabric in the aqueous dispersion of nanofibrillar cellulose to form a coating on the nonwoven fabric, passing the immersed nonwoven fabric through a prefined gap to define the thickness of the coating on the immersed nonwoven fabric without pressing, and dewatering the immersed nonwoven fabric, to obtain the medical product. The present application also relates to a medical product comprising a supporting layer and an absorbent layer, wherein the supporting layer comprises a nonwoven fabric, and the absorbent layer comprises unpressed nanofibrillar cellulose having an average fibril diameter of 200 nm or less, wherein the absorbent layer is coating the supporting layer.

Medical product and method for preparing thereof

The present application provides a medical multi-layer product comprising a layer comprising nanofibrillar cellulose, and a layer of gauze. The present application also provides a medical product comprising the medical multi-layer product, and a cosmetic product comprising the medical multi-layer product. The present application also provides a method for preparing a medical multi-layer product, the method comprising providing a filter, providing a dispersion comprising nanofibrillar cellulose, providing a gauze, applying the dispersion onto the filter, applying the gauze onto the dispersion, and dewatering the structure through the filter to obtain the medical multi-layer product.

Medical multi-layer product comprising nanofibrillar cellulose and method for preparing thereof

An arrangement and a method for controlling a dewatering process including measuring values representing operating parameters of the gravitational sedimentation device and using the values as input values for a predictive multivariable model for predicting an operating state of the gravitational sedimentation device. The disclosure further relates to obtaining reference values for the operating parameters, determining at least one predicted output for an operating parameter of the gravitational sedimentation device, and comparing the predicted output to at the reference values to determine control values that will affect changes in operation of the gravitational sedimentation device.

Method and arrangement for controlling a dewatering process

The invention relates to a method for preparing aqueous furnish to be used in paper product manufacturing. In the method aqueous furnish is prepared by making a fiber suspension, and cationic natural polymer (S), alum (A) and anionic nanofibrillar cellulose (F) are added to the aqueous furnish in a short circulation of a paper or board machine.

Method for preparing furnish and paper product

Paper product is made starting from aqueous furnish containing fibers and filler. Anionically charged nanofibrillar cellulose and cationic strength additive are added to the aqueous furnish, and the furnish is made to a paper product by dewatering the furnish. Filler content of the paper product can be increased above 40 wt-%.

Method for making paper product and paper product

The invention relates to coated printing paper which contains mechanical pulp and whose opacity is at least 89%, brightness at least 65% and surface roughness not more than 4.5 &#x3bc;m. The printing paper contains mechanical pulp at least 90 weight-% of the total fiber content of the paper.

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Lappeenranta, Finland

Mika Kosonen