Tetra Laval Holdings & Finance S.a.

Thomas Pettersson

Ingvar Andersson

Peter Öhman

Peter &Ouml;hman

G&ouml;ran Helldin

Ola REHNSTRÖM

The present disclosure relates to a method for splicing a web of packaging material, comprising: guiding the web of packaging material through a splicing device comprising one or more imaging devices, a slitter, and a sealing unit; acquiring a first set of images of one or more areas of the packaging material, storing the acquired first set of images, slitting the web of packaging material in one or more locations to form a tail end and a head end of a web of packaging material, aligning the head end and the tail end and superimpose one on the other in preparation for forming a splice, utilizing the imaging devices and the stored acquired first set of images to fine tune the alignment of the head end and the tail end, sealing the splice.

Device and method for splicing

An arrangement for controlling longitudinal forces acting on a web of packaging material being wound from a first reel to a second reel, said arrangement comprising a first roller having a first rotational axis and a second roller having a second rotational axis, wherein the first rotational axis is fixed while the second rotational axis is movable.

Device for controlling tension in a web of packaging material

Device and method for controlling axial forces acting upon a moving web comprises first, second and third rotatable rollers. The third roller is between the first and second rollers and is movable in a circular path in the vertical plane between lower and upper positions in response to axial forces acting at any moment upon the web. To enable a simple manual installation of the web, the upper position of the third roller is at a sufficient vertical distance above the first and second rollers to form an open horizontal passage through which the web can pass freely between the first and second rollers and the above-situated third roller. Axial forces are controlled by biasing the third roller with a force which counters the motion of the third roller in the direction of the upper working position and which is less than the ultimate tensile strength of the web.

Device for controlling the web tension in a running material web

The disclosure relates to an apparatus in an adjustable creasing tool ( ). The creasing tool ( ) includes two mutually co-operating creasing rollers, a male roller ( ) and a female roller ( ), a gear wheel transmission with a housing ( ) for operation and mutual co-ordination of the creasing rollers ( ), means for adjusting the mutual position of rotation of the two creasing rollers ( ), means for adjusting the position of one of the creasing rollers along its axis of rotation, and means for adjusting the mutual spacing between the axes of rotation ( ) of the creasing rollers. Each respective shaft ( ) is fixedly connected to each respective gear wheel ( ) in the gear wheel transmission by means of rotationally rigid, both radially and axially limited, flexible couplings ( ). These permit adjustment of the mutual positioning of the rollers ( ) without the meshing relationship of the transmission ( ) needing to be affected. For adjustment of the mutual position of rotation of the rollers ( ), the transmission housing ( ) may be restrictedly rotatably fixed in the frame of the creasing tool ( ) about one of the shafts ( ) of the transmission.

Adjustable creasing tool

The invention relates to a method of manufacturing edge-sealed packaging container blanks. The manufacturing process starts from a continuous material web with an outside layer and an inside, the inside layer extending outside the one edge of the web and formign a fixed strip.

Method of manufacturing edge-sealed packaging container blanks

The disclosure relates to a safety device in an opening arrangement for packaging containers, the opening arrangement having a part fixedly connected to the packaging container and a lid portion displaceable in relation thereto. In the closed position of the opening arrangement, a tongue-shaped projection (,) extends via a slit (,) into a recess (,) in the openable part. The projection (,) will thus be partly visible from the upper side of the opening arrangement until such time as the moving part (,) has been displaced to an open position in which the projection (,) irreversibly departs from the recess (,) and gives a clear, visual indication that the opening arrangement has previously been opened.

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Stockamöllan, Sweden

Thomas Pettersson