Abstract: The present invention concerns a process for producing a paper or board product, which process comprises providing a furnish comprising fibers; subjecting a first portion (1) of the furnish to polymer treatment, in which polymers are added to the furnish in at least two steps; blending said polymer treated first portion with an untreated second portion (2) of the furnish; and dewatering the furnish on a wire to form a fiber web. By treating only a portion of the furnish, the strength of the resulting paper or board product is significantly improved whereas the bulk remains substantially unaffected. The invention also concerns a paper or board product produced according to the process.

Abstract: The invention relates to a package, e.g. a blister package, comprising two spaced apart first and second walls formed and joined to each other to define a cavity between them, said walls having peripheral edges and being sealed together at a peripheral joint essentially along the edges wherein a portion of said peripheral joint comprises at least two conductive surfaces and an electrically weakable adhesive. The invention further relates to an apparatus for supplying electrical power to the package.

Abstract: A method in connection with the production of mechanical pulp from a cellulose containing material wherein the material is processed in at least one refining step to produce pulp. According to the invention, the pulp is fractionated (4), after a first refining step (1), in order to separate primary fines (5) from the pulp. The invention also relates to a mechanical pulp, produced by the method, and to a paperboard, which at least partly consists of such mechanical pulp.

Abstract: Paper or paperboard laminate composed of at least one bulk-promoting layer, here termed the bulk layer, and on at least one side at the bulk layer at least one secondary layer, secondary layer and bulk layer being joined to one another directly or indirectly over basically the whole of their surfaces facing one another, 40-95% of the bulk layer consists of cellulose fibers with a freeness of 550-950 ml CSF, the secondary layer/layers has/have a greater density than the bulk layer, and the laminate has a bending stiffness index higher than 2.5 Nm7/kg3, but less than 14 Nm7/kg3, calculated as a geometric mean value for machine and transverse direction.

Abstract: Method for manufacturing paper or cardboard in one or more plies in order to achieve a paper or cardboard product with an even quality. The method comprises determining a fiber composition of a broke paper or cardboard waste broke, fractionating the broke; and conveying at least one fiber fraction obtained thereby to a given ply in the paper or cardboard. In this way the fractionating is controlled so that the fiber composition in the fiber fraction obtained corresponds to a fiber composition in the input paper pulp for the given ply.