Tetra Laval Holdings & Finance S.a.

Lars-Erik Palm

Ulf Quensel

A gable top package for pourable food products comprising a gabled top portion including a front sloping top wall and a back sloping top wall joined together at a top transversal seal, wherein the gabled top portion includes a pair of lateral flaps adjacent to respective end portions of the top transversal seal and folded out of the package top volume available for the food product and delimited by the front and back sloping top walls.

Gable-top package for pourable food products

There is described a packaging machine ( ) for producing sealed aseptic packages ( ) of a pourable food product from a tube ( ) of packaging material fed along a vertical path (A) and filled continuously with the food product. The machine ( ) has gripping means ( ) for gripping the tube ( ) at equally spaced cross sections ( ); and sealing means ( ) for sealing the packaging material of the tube ( ) along the cross sections ( ), and in turn having a first and a second sealing device ( ) forming part of respective distinct, successive units ( ) of the machine ( ). The first sealing device ( ) interacts with the cross sections ( ) of the tube ( ) for a time (T ) shorter than the time (T) required to achieve complete sealing of the cross sections ( ), but sufficient to form respective temporary aseptic transverse sealing bands ( ); and the second sealing device ( ) interacts with said temporary sealing bands ( ) to seal them completely. (FIGS. and )

Packaging machine and method for producing sealed packages of pourable food products

Packaging container

Packaging containers for liquid contents, for example milk, are normally manufactured from laminated packaging material including a carrier or core layer of fibre material which is coated on each side with plastic layers. In order to facilitate folding of the material, this is normally provided with a pattern of weakening crease lines which facilitate the reforming into the desired packaging container configuration. A method of retroforming or calibrating a packaging container for realising more accurate final configuration, sharper fold lines and thereby for imparting to the packaging container improved steadiness and stability comprises the steps of surrounding the packaging container with a forming device adapted to the final configuration of the packaging container, and of displacing parts of the forming device towards one another so that the free space for the packaging container is briefly reduced. An apparatus for carrying the method according to the present invention into effect comprises a forming device with moving forming parts which, in the closed position, define a forming cavity of a volume which amounts to between 100 and 110 per cent of the theoretical minimum volume of a processed packaging container.

Method and apparatus for calibrating packaging containers

Method for calibrating a packaging containers

Packaging containers for beverages, for example milk or juice, as well as blanks for producing the packaging containers, are often manufactured from paper-plastic laminate which, by fold forming and sealing, is given the desired container configuration, normally parallelepipedic. With the aid of a specifically designed pattern of fold or crease lines which divide the material into, for example, six side panels (1) and associated primary end panels (7) and secondary end panels (8), respectively, prismatic, preferably hexagonal containers may instead be produced using substantially known methods.

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Lund, Sweden

Lars-Erik Palm