Stora Enso Oyj

Teemu Karhu

Päivi Määttä

Jalliina Järvinen

Panu Tanninen

Niilo Pöyhönen

Noora Nylander

Olavi Pirttiniemi

Timo Myllys

Heli Vesanto

Tapani Sarin

Olav Pirttiniemi

Aimo Ojava

Juhani Nylander

Päivi MÄÄTTÄ

A package for ready-prepared foods which comprises a dish adapted to contain food, said dish containing a rim flange, and a lid, heat-sealed to the rim flange, wherein the rim flange is provided with a plurality of ridges which extend around substantially the entire periphery of the dish defining a space between said ridges, said space being divided into a plurality of transverse ridges which extend across the space forming a plurality of sealing compartments which substantially eliminate sealing leakage.

Package for ready-prepared foods

The present invention relates to a method for forming a package by moulding a cardboard blank in such a manner that a margin area () of the blank, surrounding a middle portion () of the blank, is bent upwards to form side walls of the package while the middle portion forms a bottom of the package. The cardboard blank prior to moulding is provided with at least one area () of reduced bending stiffness being located in a transition zone () between the side walls and the bottom. The package is moulded from the blank so that the at least one area () of reduced bending stiffness is located in the bended areas between the side walls and the bottom and extend in the running direction of the bend. The invention further relates to a package and a package blank that can be used for forming said package.

Method for forming a package, a package and a package blank

Mold system () for manufacturing cardboard-based container, comprising movable mold half () and stationary mold half () located opposite one another. Movable mold half (), movable with respect to stationary mold half (), includes at least a core plate (), a plate-like seal ring () movable with respect to the core, and collar ring (). Stationary mold half () includes at least a mold plate () provided with a mold cavity () and a seal surface (). In the mold system (), an insert () can be supported on and detachably attached to the base () of the mold cavity () reducing the depth H of the mold cavity by its height h. Container () comprises bottom () pressed from cardboard blank and wall () connected to the bottom and plastic rim () connected to the upper edge of the walls.

Mould system for changing the depth of a cardboard-based container

In a method for forming a package, a package with the shape of a container is formed of a cardboard blank, the package having a bottom and side walls extending upwards from the bottom. At the end stage of compression molding, a rim of molding material extending sideways is molded to the upper part of the side walls when the mold is kept closed in such a way that a mold cavity corresponding to the rim is formed by moving a counter surface inside the mold backwards from a surface opposite to it, after which the molding material is introduced into the mold cavity.

Method for forming a package and a package

A mould system for manufacturing a container which includes a movable mould half and a stationary mould half which are positioned opposite to each other, wherein the movable mould half includes a core plate provided with a core, a plate-like seal ring that is movable relative to the core, a seal surface which surrounds the core, and a collar ring that is movable relative to the core and the stationary mould half includes a mould plate provided with a mould cavity and a seal surface, wherein in the mould system, a plate-like insert is connected to the seal surface of the seal ring, the insert including a recess which is in contact with a front edge of the seal surface, so that it is in flow communication with molten plastic material flowing from the direction of the collar ring.

Mould system for manufacturing a container

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Imatra, Finland

Teemu Karhu