Search for dissertations about: "multi-ply paperboard"
Found 4 swedish dissertations containing the words multi-ply paperboard.
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1. Modelling the Moisture Content of Multi-Ply Paperboard in the Paper Machine Drying Section
Abstract : This thesis presents a grey-box model of the temperature and moisture content for each layer of the multi-ply paperboard inside the drying section of a paper mill. The distribution of the moisture inside the board is an important variable for the board quality, but is unfortunately not measured on-line. READ MORE
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2. On Modelling and Estimation of Curl and Twist in Multi-Ply Paperboard
Abstract : This thesis describes a grey-box model for the dimensionalstability properties (i.e. curl and twist) of the carton boardproduced at AssiDomän Frövi paper mill in Sweden.AssiDomän Frövi AB is one of Sweden major cartonboard manufacturer, and produces some 350000 ton of board peryear. READ MORE
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3. Residual stresses in paperboard and the influence of drying conditions
Abstract : The drying sequence in the manufacturing process for paperboard involves evaporation of water, primarily from within the fibres. The vapour is then transported out of the web by pressure or concentration gradients. READ MORE
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4. Production and application of fine fractions made of chemical pulp for enhanced paperboard strength
Abstract : For all kinds of paperboard packages, the bending stiffness of the paperboard is a crucial property. In multi-ply folding boxboard (FBB) grades, this is obtained by placing different stocks in the outer and centre plies of the board. In the outer plies, a stock with a high tensile stiffness is used, typically made from refined kraft pulp fibres. READ MORE