Abstract: An induction heating sealing device for induction welding of a packaging material for producing sealed packages of pourable food products in a package producing machine is provided. The packaging material has at least one layer of metallized film. The induction heating sealing device comprises an AC power source and an inductor coil connected to the AC power source and configured to induce eddy currents in the metallized film for inductive heating of the packaging material, wherein the AC power source is configured to generate a variable-voltage or current signal of a frequency higher than 1 MHz.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The present invention refers to a method for sealing a first packaging material laminate (10) to a second packaging laminate (12), at least the first laminate (10) comprising at least one layer of magnetizable particles and a sealable layer (34). The method is characterized in facing the sealable layer (34) towards the second laminate (12), providing an alternating magnetic field to the laminates in a sealing zone, thereby generating magnetic hysteresis losses in the laminate (10) comprising the magnetizable particles, which losses create heat substantially melting the sealable layer (34) in the sealing zone, and applying a sealing pressure to the first and second laminate (10, 12), which pressure causes the first and second laminate (10, 12) to be pressed together in the sealing zone, thereby sealing the laminates (10, 12) to each other. The invention also relates to a device for carrying out the method.