Patent ID: 8623260

Claim:
A mould system for manufacturing a cardboard-based container, comprising a movable mould half and a stationary mould half, which are located opposite to each other, the mould system enabling the manufacture of a container, which comprises a bottom that is pressed from a cardboard blank and walls that are connected to the bottom, and a rim that is at least partly cast of plastic and connected to the upper edge of the walls, encircling the walls, whereby the mould half that is movable with respect to the stationary mould half includes at least a core plate provided with a core, a plate-like seal ring, which is movable with respect to the core and comprises a shut-off surface and surrounds the core, and a collar ring, which can be adapted between the core and the seal ring and by which the rim can be made on the container and which can be moved with respect to both the seal ring and the core; and the stationary mould half includes at least a mould plate that is provided with a mould cavity and a seal surface, characterized in that in the mould system, when the mould is closed, a common seal surface is formed by the seal surface, which operates as a shut off surface, of the seal ring and the face of the seal surface of the collar, so that said seal surface of the seal ring and face of the seal surface of the collar are brought into flush contact with one another, an insert can be supported on and detachably attached to the base of the mould cavity, which has its upper surface at the height H from the base of said mould cavity, wherein said insert reduces the depth H of the mould cavity by its height h, so that the continuous surface of the insert works as the new bottom of the mould cavity and that the length H of the part of the core that penetrates inside the mould cavity at the compression stage of the cardboard blank can be reduced, respectively, by the height h of the insert either by replacing the core on the core plate with a shorter one or by detachably attaching, to the basic part of the core that does not change its length, an attachment part, the length of which can be changed, whereby the core or the attachment parts of the core and the inserts of the base of the mould cavity, which correspond to each other, can be used to change the distance of the container bottom, which is pressed from the cardboard blank, from the upper edges of the container walls.