Abstract: Disclosed is an arrangement and method for controlling a pressure filter. The arrangement comprises the pressure filter for solid-liquid separation for producing a filter cake and a moisture analyzer for providing an indication of moisture content of the filter cake. One or more controllers may be used for utilizing the indication of moisture content to set a drying time for the solid-liquid separation.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: One embodiment provides a method for preparing a medical product, said method comprising providing an aqueous dispersion of nanofibrillar cellulose, providing a layer of gauze, impregnating the layer of gauze with the aqueous dispersion of nanofibrillar cellulose, and dewatering the impregnated gauze, to obtain the medical product. One embodiment provides a medical product comprising a layer of gauze impregnated with nanofibrillar cellulose.

Abstract: 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.

Abstract: 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 fibre 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.

Abstract: The invention relates to a multiplexing and demultiplexing method and apparatus, wherein a transmission of input data from one or a plurality of input buffers to a plurality of or one output buffer, respectively, is released when all of the plurality of or the one output buffer is capable of receiving data. Thus, a plurality of devices can be connected to another device using only one address. The plurality of devices may then decide themselves whether the data belongs to them or not. In one direction, the data is broadcasted to all of the plurality of devices and, in the other direction, one of the plurality of devices can transmit data at a time. Accordingly, interface addresses can be saved in case the number of addresses is not enough for all of the plurality of devices.

Abstract: 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 ?m. The printing paper contains mechanical pulp at least 90 weight-% of the total fiber content of the paper.

Abstract: A method and apparatus for determining the retention of a wire section in a paper machine. The mass flow of a paper web on the wire section is determined by means of web properties measured after the wire section. In addition, the mass flow of a headbox and/or white water is determined. The retention of the wire section is determined on the basis of the mass flows of the paper web and the headbox and/or the mass flow of the white water.

Abstract: 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 &mgr;m. The printing paper contains mechanical pulp at least 90 weight-% of the total fibre content of the paper.

Abstract: The invention relates to a multiplexing and demultiplexing method and apparatus, wherein a transmission of input data from one or a plurality of input buffers to a plurality of or one output buffer, respectively, is released when all of the plurality of or the one output buffer is capable of receiving data. Thus, a plurality of devices can be connected to another device using only one address. The plurality of devices may then decide themselves whether the data belongs to them or not. In one direction, the data is broadcasted to all of the plurality of devices and, in the other direction, one of the plurality of devices can transmit data at a time. Accordingly, interface addresses can be saved in case the number of addresses is not enough for all of the plurality of devices.

Abstract: Properties of paper are controlled by modeling the effect of at least one variable (fD) of the paper dryer section on the paper moisture (Moi) and the effect of the stock flow (Fts) and/or stock composition and the flow of retention agent (Fra) on the paper moisture (Moi). By means of the modeling, the paper moisture (Moi) is adjusted by simultaneously controlling at least one variable (fD) of the paper dryer section, the stock flow (Fts) and the flow of retention agent (Fra).