Abstract: The present invention relates to process for the manufacturing of mattresses characterized in that a liquid molding substance of the same material as the construction pieces (1, 3, 4, 6) is used in all the joints between the pieces. The process comprises steps wherein: the bottom piece (1) is laid out; the molding substance (2) is applied to the longitudinal edges (3) and cross edges (4) on one surface side of the bottom piece (1); the longitudinal pieces (3) and cross pieces (4) are lowered into a molding substance (2) and hardened; the molding substance (2) is applied on the same surface side of the bottom piece (1) between the longitudinal pieces (3) and cross pieces (4); a core (6) is lowered into the molding substance (2) and hardened; and the top piece (7) is provided with molding substance (2) and turned with the molding substance (2) facing the named upright longitudinal pieces (3) and cross pieces (4) and lowered onto the same and hardened.

Abstract: The present invention concerns a frame mattress comprising a frame (1) with a spring inlay (3) surrounded by the frame, and a material (2) over the spring inlay, together with a reversible mattress (5), arranged for abutting the material (2), and a cover (7) enveloping the reversible mattress (5) and at least partly the frame (1), characterised in that the material (2) is at least partly detachable and that the spring inlay (3), constituting a principally form stable unit, is reversibly arranged in the frame (1).