Abstract: The present application relates to a method for manufacturing fiber-reinforced plastic products. This method comprises: preparing a fiber preform on a mold; disposing first and second flow meshes and first and second demolding cloths; sealing the fiber preform to form a vacuum system by pumping; penetrating the resin through the first peel ply via the first flow mesh and impregnates the fiber preform from bottom to top; penetrating the resin through the second peel ply via the second flow mesh and impregnates the fiber preform from top to bottom; and attaining a resin-impregnated fiber perform and finally attaining fiber-reinforced plastic products.

Abstract: A curl-forming apparatus (1) includes: a main body (20) configured to deform a profile strip (100); and a support body (3) configured to support the main body (20) in a holding unit (4) for the profile strip (100). The profile strip (100) is helically wound on an inside of the holding unit (4). The main body (20) is disposed in a hollow part of the holding unit (4) and is configured to draw and deform the profile strip (100) inside the holding unit (4). The support body (3) is rotatable relative to the holding unit (4), and is configured to rotate about an axis of the holding unit (4) in synchronization with the main body (20) that draws the profile strip (100).

Abstract: A moulding assembly with an inlet for receiving raw material to be ejected is disclosed. The moulding assembly may include: a barrel for gathering and processing the raw material received through the inlet, a screw for engaging the raw material in the barrel, and a first drive unit configured for rotating the screw in order to grind the raw material into liquid form. The moulding assembly may further comprise a second drive unit configured to displace the screw in a direction essentially perpendicular to the rotation direction in and out of the barrel depending on the pressure in the barrel.

Abstract: The disclosed solution relates to recovering thermal energy from the operation of a dissolver of a chemical recovery boiler used in pulp manufacturing. According to the solution, a primary fluid circuit conveys green liquor from the dissolver to an external process such as causticizing and solvent such as weak white liquor back to the dissolver, and from this circuit solvent is diverted into a secondary fluid passageway comprising a heat exchanger which cools the solvent by recovering heat from it and transfers the heat to a heat-consuming process. After heat recovery, solvent may be used for further processes before it is at least partly conveyed back to the dissolver.

Abstract: The invention relates to a method for reducing pulp viscosity in production of dissolving pulp. The method comprises producing cellulose pulp, whereby the obtained cellulose pulp has a cellulose content of at least 90%, and bleaching the obtained cellulose pulp. The cellulose pulp is treated after bleaching with performic acid.

Abstract: The disclosed solution relates to recovering thermal energy from the operation of a dissolver of a chemical recovery boiler used in pulp manufacturing. According to the solution, a primary fluid circuit conveys green liquor from the dissolver to an external process such as causticizing and solvent such as weak white liquor back to the dissolver, and from this circuit solvent is diverted into a secondary fluid passageway comprising a heat exchanger which cools the solvent by recovering heat from it and transfers the heat to a heat-consuming process. After heat recovery, solvent may be used for further processes before it is at least partly conveyed back to the dissolver.