Tetra Laval Holdings & Finance S.a.

Magnus Råbe

Hans Hallstadius

Magnus Wijk

Nils Toft

Masamichi Kaneko

Håkan Andersson

Karl Israelsson

Antonio Melandri

Gyula Balla

Ulf Lindblad

Mats Qvarford

Andreas Kraus

Sergio Mancin

Gert Holmström

Magnus Lindvall

Francesco Giordano

Uwe Dreissigacker

Eva Ehrenberg

Peter Blomqvist

Tord Cedell

Daniel Zulumovski

Per Johansson

Fabio Massaccesi

Ingmar Andreasson

Stefano Fantini

Jonas Christoffersson

Ulrich Vögler

Viktor Petersson

Emil Johannesson

Uwe DREIßIGACKER

A method for transversally sealing a packaging material tube, comprises placing a transversal sealing section of the tube between a sonotrode and an anvil. The transversal sealing section comprises a first two-layer sub-section, a three-layer sub-section and a second two-layer sub-section, transmitting ultrasonic acoustic vibrations, having a frequency and an amplitude, from the sonotrode into the transversal sealing section, thereby melting the plastic foil in the transversal sealing section, and pressing the tube together between the sonotrode and the anvil to bond the plastic foil such that transversal sealing is formed. The anvil has a ridge comprising various sub-sections for receiving various ones of the sub-sections of the tube, wherein the ridge has equal height in at least some of the sub-sections. The frequency, amplitude, pressure and paperboard properties are chosen to achieve equal temperature in the first two-layer sub-section, the three-layer sub-section and the second two-layer sub-section.

Method for transversally sealing a tube of packaging material using an ultrasonic sealing device, an anvil and an ultra-sonic sealing device

An apparatus for quality assessment of a sealing section of a package for food products. The package comprises at least a robustness layer and a plastic layer. The sealing section is formed by holding a first section and a second section of the package against each other while providing heat such that the plastic layer of the first and second section melt and thereby provide for that the first and second section adhere to each other. The apparatus comprises a sample holder arranged for fixating a sample comprising the sealing section of the package, wherein at least part of the sample holder is transparent, a magnification device arranged on a first side of the sample holder, and an illumination device arranged on a second side of the sample holder, such that light is provided to the magnification device through the sample holder, wherein the first and second side are opposite sides of the sample holder.

Apparatus for quality assessment of a sealing section of a package for food products, and a method thereof

A method for quality assessment of a sealing section of a package, wherein the package includes at least a robustness layer and a plastic layer. The sealing section is formed by holding a first section and a second section of the package against each other while providing heat such that the plastic layer of the first and second section melt and thereby provide for that the first and second section adhere to each other. The method includes capturing image data depicting the sealing section using a camera, identifying a reference line in the image data, identifying a sealing section boundary line in the image data, determining a sealing section assessment feature set based on the reference line and the sealing section boundary line, and comparing the sealing section assessment feature set with a reference feature set.

Method for quality assessment of a sealing section of a package, and an apparatus thereof

An apparatus for quality assessment of a sealing section of a package for food products. The package includes at least a robustness layer and a plastic layer. The sealing section is formed by holding a first section and a second section of the package against each other while providing heat such that the plastic layer of the first and second section melt and the first and second section adhere to each other. The apparatus includes a sample holder arranged for fixating a sample including the sealing section of the package. At least part of the sample holder is transparent, a magnification device arranged on a first side of the sample holder, and an illumination device arranged on a second side of the sample holder. Light is provided to the magnification device through the sample holder The first and second side are opposite sides of the sample holder.

A non-foil packaging laminate for liquid food packaging comprises a layer of paper or other cellulose-based material, outermost liquid tight, heat sealable layers of polyolefin-based polymers and, vapour-deposition coated onto the inner side of the layer of paper or cellulose-based material, an induction heat susceptible metal coating. Also disclosed is a method for manufacturing of the packaging laminate, a packaging container that is made from the packaging laminate and a method of induction heat sealing the packaging laminate into packaging containers.

Non-foil packaging laminate, method for manufacturing of the packaging laminate and packaging container produced thereof

An inductor coil for induction welding of a packaging material having at least one layer of metal foil is disclosed. The inductor coil can be configured to induce an alternating current in the at least one layer of metal foil for inductive heating of the packaging material. In some embodiments, the inductor coil comprises a base layer material and a top layer material bonded to the base layer material to form an irreversible bonding interface comprising a mixture of the base layer material and the top layer material. An induction sealing device comprising at least one inductor coil and a method of manufacturing an inductor coil for induction welding of a packaging material is also disclosed.

Inductor coil for induction welding of a packaging material

A sonotrode comprising: a head defining a sealing surface elongated along a first direction; and a first and a second drive unit distinct from one another, each comprising at least one piezo-electric element; wherein first and second drive unit may be electrically fed by an unique generator to cause oscillation of head; the height of head measured along a second direction transversal to sealing surface being substantially equal to half the wavelength of wave oscillating in second direction; at least one slot extending through head transversally to first and second direction; a finite number of nodal points at which amplitude of oscillation of head is substantially equal to zero; and a plane on which at least some nodal points lie and which divides head in a first portion and second portion; the slot extends completely within one only between first and second portion and at a certain distance by plane.

Sonotrode

A method for sealing a first packaging material laminate, comprised of at least one layer of magnetizable particles and a sealable layer, to a second packaging laminate involves facing the sealable layer towards the second laminate, providing an alternating magnetic field to the laminates in a sealing zone, thereby generating magnetic hysteresis losses in the laminate having the magnetizable particles, which losses create heat substantially melting the sealable layer in the sealing zone, and applying a sealing pressure to the first and second laminate to cause the first and second laminate to be pressed together in the sealing zone, thereby sealing the laminates to each other.

Method and device for sealing

The invention relates to an ultrasound horn comprising a fixing section (), a sealing section () and a transfer section () extending therebetween, one or more elongate recesses () being formed at least in the transfer section (), and said recesses () extending in a direction (A) between the fixing section () and the sealing section (). Said recesses () have a rounding-off encompassing, along the rounding-off, at least a first portion () with a first radius of curvature, a second portion () with a second radius of curvature and a third portion () with a third radius of curvature. The invention also relates to a novel forming of the transfer section () and recesses () at the ends of the sealing section ().

Ultrasound horn

An apparatus and method for sealing a sealing area of a packaging container in which the sealing area has a predetermined exterior shape. The apparatus includes a generator, a horn and an anvil. The anvil has an abutting portion that conforms to the exterior shape of the sealing area of the packaging container. The plurality of slidable plates may be composed of a ferromagnetic material, a paramagnetic material or a ceramic material. The plurality of slidable plates are supported on an elastic sleeve that allows for the inward movement of the plates when the force exerted by the horn on the sealing area exceeds the elastic force of the sleeve thereby allowing the corresponding plurality of slidable plates to conform to the exterior shape of the sealing area of the packaging container. An electromagnet may be used to restrict the movement of the slidable plates subsequent to their conforming to the exterior shape of the sealing area.

Apparatus for sealing packaging containers

A rotation-symmetric ultrasound horn for producing a circular seal to effect liquid-tight joining together of, for example, packaging container parts. The ultrasound horn is connected to an ultrasound source which supplies the horn axially via a supply end. The horn displays an opposing, tubular working end with a circular work surface. The mean diameter of the tubular part varies along the axis of the horn so that the horn, in the region of the work surface, is of greater mean diameter and cross-sectional area than in a region located between the work surface and the supply end of the horn. As a result of this design and construction, the initially axial ultrasound waves are given a radial component of sufficient amplitude to achieve welding of thermoplastic material along the circular work surface of the horn.

An apparatus for ultrasonic sealing of thermoplastic materials includes a vibration generator of a so-called giant magnetostrictive powder composite (GMPC) which is anchored to a jaw at an anchorage point. The vibration generator is formed with a cross-sectional area which progressively reduces as seen from the anchorage point. A free end of the vibration generator has a narrow working surface. The vibration generator is surrounded by a coil for generating a magnetic field.

Growing community of inventors

Åkarp, Sweden

Magnus Råbe