Abstract: The invention relates to a method and system for improving the application of a coating on a Yankee cylinder (CR) in tissue paper machines. The invention implements a moisture-controlled environment (12) in an area of the exposed Yankee cylinder between the take-off position (TO) and ahead of the transfer position (TP) of the web, i.e. before and/or after the application of a coating with Performance Enhancing Material (PEM), wherein the cooling effect on the Yankee surface is increased by increased evaporation rate of water in the coating or water additionally applied onto the coating.

Abstract: The invention relates to a method of transferring a tissue web with residual moisture to a Yankee cylinder and final removal of the dried tissue web from the Yankee cylinder using a doctor blade and collecting the dried web on a reel-up machine forming a tissue reel. The invention also relates to the Yankee adhesive composition per se. The method involves preparation of a water solution of a Yankee adhesive composition with less than 10% final solids content to be applied on the surface of the Yankee cylinder ahead of transferring the tissue web with residual moisture to the Yankee cylinder. The inventive method applies an aqueous PVOH solution with a very high molecular weight polyvinyl alcohol as a part of the solid content of the Yankee adhesive in an amount ranging from 20-65% of the final solids content of the Yankee adhesive. The aqueous PVOH solution with the very high molecular weight polyvinyl alcohol establish a viscosity ranging from 90 cP to 300 cP.

Abstract: The invention relates to a method of transferring a tissue web with residual moisture to a Yankee cylinder and final removal of the dried tissue web from the Yankee cylinder using a doctor blade and collecting the dried web on a reel-up machine forming a tissue reel. The invention also relates to the Yankee adhesive composition per se. The method involves preparation of a water solution of a Yankee adhesive composition with less than 10% final solids content to be applied on the surface of the Yankee cylinder ahead of transferring the tissue web with residual moisture to the Yankee cylinder. The inventive method applies an aqueous PVOH solution with a very high molecular weight polyvinyl alcohol as a part of the solid content of the Yankee adhesive in an amount ranging from 20-65% of the final solids content of the Yankee adhesive. The aqueous PVOH solution with the very high molecular weight polyvinyl alcohol establish a viscosity ranging from 90 cP to 300 cP.

Abstract: An arrangement and method for monitoring a Yankee cylinder (3). The arrangement comprises a Yankee cylinder (3) arranged in a tissue machine (1) for manufacturing a tissue web (2), a measuring device (10) being a permanent part of the tissue machine (1) and providing a main measuring device for a process control of the tissue machine (1), and at least one data processing unit (15) configured to process measurement data describing the at least one measured property of the moving web (2). The data processing unit (15) is configured to form at least one graphical representation describing a treatment effect performance provided by a heated outer surface (4) of the Yankee cylinder (3) to the web (2) to be manufactured.

Abstract: The invention relates to a suction device (15) for use in a papermaking machine (1). The suction device (15) has a length (L) in the machine direction that extends from a first end (16) to a second end (17). The suction device (15) further has a surface (18) which, during use of the suction device (15) in the papermaking machine, will be facing a permeable fabric (4, 6) passing the suction device during operation such that this surface (18) is a fabric-facing surface (18). The fabric-facing surface (18) has a first part (19) which begins at the first end (16) of the suction device (15) and extends towards the second end (17) but ends before the second end (17) of the suction device. The first part (19) of the fabric-facing surface (18) is formed by a plurality of planar surfaces (23) which constitute end surfaces of a plurality of solid elements (21) and lie in the same plane such that, during operation, they can contact a fabric (4, 6) gliding over the fabric-facing surface (18) along a straight path.

Abstract: The invention relates to a suction device (15) for use in a papermaking machine and being suitable for acting on a wet fibrous web through a permeable fabric (4, 6), e.g. a through-air-drying (TAD)-fabric. The suction device has a fabric-facing surface (18) formed by a plurality of end surfaces of solid elements (21, 22). Channels (24, 25) are defined between the solid elements. The end surface of the final solid element (22) does not lie in the same plane as the end surfaces of the previous solid elements (21). Thereby, a gap A is formed between the fabric (4, 6) and the final solid element (22). This allows air to flow through the gap and into a final channel (25). The air flow will then catch fines, small fibers and water droplets and draw them into the final channel (25) thereby counteracting a build-up of large lumps of fines and fibers.

Abstract: The invention relates to a suction device (15) for use in a papermaking machine and being suitable for acting on a wet fibrous web through a permeable fabric (4, 6), e.g. a through-air-drying (TAD)-fabric. The suction device has a fabric-facing surface (18) formed by a plurality of end surfaces of solid elements (21, 22). Channels (24, 25) are defined between the solid elements. The end surface of the final solid element (22) does not lie in the same plane as the end surfaces of the previous solid elements (21). Thereby, a gap A is formed between the fabric (4, 6) and the final solid element (22). This allows air to flow through the gap and into a final channel (25). The air flow will then catch fines, small fibers and water droplets and draw them into the final channel (25) thereby counteracting a build-up of large lumps of fines and fibers.

Abstract: An arrangement and method for monitoring a Yankee cylinder (3). The arrangement comprises a Yankee cylinder (3) arranged in a tissue machine (1) for manufacturing a tissue web (2), a measuring device (10) being a permanent part of the tissue machine (1) and providing a main measuring device for a process control of the tissue machine (1), and at least one data processing unit (15) configured to process measurement data describing the at least one measured property of the moving web (2). The data processing unit (15) is configured to form at least one graphical representation describing a treatment effect performance provided by a heated outer surface (4) of the Yankee cylinder (3) to the web (2) to be manufactured.

Abstract: An analysis system utilizes a reagent with a machine-readable label for performing a biological assay on a sample. A scanner reads the label, and generates a scanner signal in response to reading the label. A memory stores a plurality of protocols for the automation of one or more assays performed on one or more samples. A detector generates a detector signal in response to the sample. A controller receives the scanner signal and selecting a corresponding protocol from the plurality of protocols in response to at least the scanner signal. The detector signal is received by the controller and processed into a data set. A user input module facilitates user selection of assay protocol parameters. The user input module is in communication with the controller. A data processing module is in communication with the controller. The data processing module receives the data set and processes the data set according to the protocol.

Abstract: A biological sample processing apparatus having a central processing unit, a display in communication with the central processing unit and a selector for selecting a personality type of the apparatus, the selector being in communication with the central processing apparatus. The selection of a personality type prompts the central processing unit to cause the display to show a list of preprogrammed protocols for biological sample processing that correspond to the selected personality type.