A sheet manufacturing apparatus is supplied with a raw material including fibers and manufactures a sheet by processing the supplied raw material. The sheet manufacturing apparatus includes a control unit that displays a user interface in which raw material information related to the supplied raw material, manufacturing information related to the manufactured sheet, and processing information related to processing of the sheet are displayed.

The invention relates to a method for producing paper, board or the like. The method comprises obtaining a thick stock comprising cellulose fibres, forming a fibrous web and drying of drying the fibrous web. A strength agent system, which comprises at least one synthetic or natural polymer, or their mixture, and microfibrillated parenchymal cellulose material originating from non-wood sources, is added to the thick stock. The invention relates also to paper or board produced by the method.

The invention relates to a method for producing paper, board or the like. The method comprises obtaining a thick stock comprising cellulose fibres, forming a fibrous web and drying of drying the fibrous web. A strength agent system, which comprises at least one synthetic or natural polymer, or their mixture, and microfibrillated parenchymal cellulose material originating from non-wood sources, is added to the thick stock. The invention relates also to paper or board produced by the method.

An accumulating unit that discharges fibers by rotating a drum unit in which a plurality of openings are formed, a second web forming unit that forms a second web by operating a mesh belt, a sheet forming unit that forms a sheet from the second web, and a control unit that performs a start control for operating the accumulating unit and the second web forming unit from the stop state are included. In a case where the start control is performed from a state where the fibers are present in the drum unit, the control unit adjusts a thickness of the second web by controlling at least one of a timing at which rotation of the drum unit is initiated, a rotational speed of the drum unit, a timing at which movement of the mesh belt is initiated, and a movement speed of the mesh belt.

An accumulating unit that discharges fibers by rotating a drum unit in which a plurality of openings are formed, a second web forming unit that forms a second web by operating a mesh belt, a sheet forming unit that forms a sheet from the second web, and a control unit that performs a start control for operating the accumulating unit and the second web forming unit from the stop state are included. In a case where the start control is performed from a state where the fibers are present in the drum unit, the control unit adjusts a thickness of the second web by controlling at least one of a timing at which rotation of the drum unit is initiated, a rotational speed of the drum unit, a timing at which movement of the mesh belt is initiated, and a movement speed of the mesh belt.

The present invention relates to a microfibrillated cellulose composition comprising a microfibrillated cellulose originating from agricultural biomass, said microfibrillated cellulose composition comprising: 30 wt % cellulose, 1-15 wt % pectin, 8-25 wt % hemicellulose, 0-12 wt %, lignin, 0-15 wt % ash, and 0-8 wt % protein, based on dry solids content of said composition. The present invention further relates to its manufacture, and use in and manufacture of paper and paperboard products.

A composition comprising 10 to 50 weight % wood pulp fiber, 45 to 85 weight % thermoplastic polymer and 0.1 to 5 weight % clear mineral oil having a specific gravity less than water. A composition comprising 65 to 85 wt % wood pulp fiber, 15 to 35 wt % thermoplastic polymer and 0.1 to 5 weight % mineral oil having a specific gravity less than water. The wood pulp fiber can be bleached chemical wood pulp fiber.

A composition comprising 10 to 50 weight % wood pulp fiber, 45 to 85 weight % thermoplastic polymer and 0.1 to 5 weight % clear mineral oil having a specific gravity less than water. A composition comprising 65 to 85 wt % wood pulp fiber, 15 to 35 wt % thermoplastic polymer and 0.1 to 5 weight % mineral oil having a specific gravity less than water. The wood pulp fiber can be bleached chemical wood pulp fiber.

The invention relates to a water-disintegratable fiber composite material (1), comprising: a number of fiber elements (2); and at least one binding agent (3) which is formed of or comprises a water-soluble polysaccharide, wherein the at least one binding agent (3) has a viscosity of more than 500 mPas, measured on an aqueous solution containing 2 wt. % binding agent at 20° C.

The invention relates to a water-disintegratable fiber composite material (1), comprising: a number of fiber elements (2); and at least one binding agent (3) which is formed of or comprises a water-soluble polysaccharide, wherein the at least one binding agent (3) has a viscosity of more than 500 mPas, measured on an aqueous solution containing 2 wt. % binding agent at 20° C.