Stora Enso Oyj

Panu Tanninen

Noora Nylander

Päivi Määttä

Jalliina Järvinen

Teemu Karhu

Olavi Pirttiniemi

Jari Räsänen

Kimmo Nevalainen

Mari Hiltunen

Risto Vesanto

Sami Matthews

Henry Lindell

Kaj Backfolk

Jari Hovikorpi

Petri Laakso

Mika Aunola

Ville Laalo

Bo Sundqvist

Paivi Maeaettae

Paeivi Maeaettae

Outi Kyllianen

The invention relates to a method and an apparatus for deep-drawing a tray () from fiber-based sheet material (), such as polymer coated board. The apparatus comprises a female moulding tool (), which comprises a cavity () for forming the tray bottom outwardly, a male moulding tool (), which comprises a plunger plate () for forming the tray bottom inwardly, the plunger plate being movable with respect to the cavity for forming the tray, and clamps () with an interface for holding the sheet material and forming a tray rim flange. According to the invention by laterally distancing at least one of the moulding tools () from the sheet material leeway is provided for free forming of the tray side walls while wrinkling or tearing of the same is avoided. Spacer plates () may be positioned behind the plunger plate (), to adjust its position in relation to the cavity () of the female moulding tool (). The cavity may have a separate bottom plate () and spacer plates () there below, or screw means may be provided for adjusting the distance of the bottom of the cavity from the clamp interface and thereby varying the depth of the tray.

Method and apparatus for deep-drawing a tray from sheet material

The invention relates to a method and an apparatus for deep-drawing a tray () from a blank of sheet material (). The blank is provided with score lines, which determine the location of wrinkles formed in the process. The apparatus comprises a female moulding tool (), which comprises a cavity () for forming the tray bottom outwardly, a male moulding tool (), which comprises a plunger () for forming the tray bottom inwardly, the plunger being movable with respect to the cavity for forming the tray, and clamps () with an interface for holding the sheet material and forming a tray rim flange. According to the invention by laterally distancing at least one of the moulding tools () from the sheet material leeway is pro-vided for free forming so that wrinkling of the tray side walls is achieved in a controlled manner. Spacer plates () may be positioned behind the plunger (), to adjust its position in relation to the cavity () of the female moulding tool (). The cavity may have a separate bottom plate () and spacer plates () therebelow, or screw means may be provided for adjusting the distance of the bottom of the cavity from the clamp interface and thereby varying the depth of the tray.

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

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

The invention relates to a method of providing board containers (V) with prints and a printing machine that applies the method. According to the invention, the printing machine comprises a turret head (), with uniformly spaced radial arms () diverging from its rotational axis, each arm ending in a mandrel () that carries a container (); and stationary stations () that are located on the path of the turret head for gripping a container, printing it by a printhead (), and removing the printed container (V). At the printing station (), the container () is digital-printed by the printhead (), past which the surface of the container is conveyed by means of a rotational motion. The container can be a conical drinking cup (), which is ink-jet printed by the stationary printhead () by rotating the cup by 360&#xb0; by means of the mandrel () that is pushed inside the cup. The cups () can be produced at a plant in mass-scale production runs and divided into smaller lots, which are delivered to customers and which the customers then print according to their own individual needs.

Method and a printing machine for manufacturing printed board containers

A board tray, a method for manufacturing a board tray and a tray blank from which the board tray is manufactured, said board tray containing side walls and a bottom wall made of a board layer provided on at least one surface thereof with a plastic coating, wherein areas of reduced thickness are formed in the board layer whereby portions of the plastic layer which have been melted and are disposed adjacent to areas of reduced thickness are compressed into such areas forming double-folded linear plastic compressions which seal on themselves.

Method for manufacturing a board tray, a blank for the tray, and a tray obtained by the method

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Rauha, Finland

Panu Tanninen