US 2014/0075884 A1 · INDUCTION SEALING DEVICE FOR HEAT SEALING PACKAGING MATERIAL FOR PRODUCING SEALED PACKAGES OF POURABLE FOOD PRODUCTS

Abstract

There is described a heating induction sealing device for forming a seal in a packaging material comprising an electrically conductive element and advancing along a direction; sealing device comprises one first inductive element and one second inductive element; first inductive element comprises a first portion facing second inductive element and defining with second inductive element a passage for packaging material; and a second portion; sealing device is selectively arrangeable in a first configuration, in which alternate currents flow within first and second inductive element; first portion and second inductive element are configured to generate a first magnetic flux transversally to direction, when sealing device is arranged in first configuration; second portion is configured to generate, in use, a second magnetic flux with a main component parallel to direction, when sealing device is arranged in first configuration.

Claims13

Dependent claims

A heating induction sealing device for forming a seal in a packaging material comprising an electrically conductive element and advancing along a direction;

said sealing device comprising at least one first inductive element comprising:
at least one second inductive element;
said first inductive element comprising:
a first portion facing said second inductive element and defining with said second inductive element a passage for said packaging material;
and
a second portion;
said sealing device being selectively arrangeable in a first configuration, in which alternate currents flow within said first and second inductive element;
said first portion and second inductive element being configured to generate, in use, a first magnetic flux transversally to said direction, when said sealing device is arranged in said first configuration;
the constant-value lines of said first magnetic flux being symmetrical, in use, relative to said packaging material;
said second portion being configured to generate, in use, a second magnetic flux with a main component transversal to said direction, when said sealing device is arranged in said first configuration.

7 more elements

A method of forming a seal in a packaging material comprising an electrically conductive material and advancing along a direction, comprising:

interposing said packaging material to be sealed within a passage defined between a first and a second inductive element;
causing alternate current to flow within said first and second inductive element;
generating a first magnetic flux transversally to said first direction by using alternate current flowing within a first portion of said first inductive element and said second inductive element;
said first portion facing said second inductive element and defining said passage with said second inductive element;
the constant-value lines of said first magnetic flux being symmetrical, in use, relative to said packaging material;
and
generating a second magnetic flux having a main component transversal to said direction by using alternate current flowing within a second portion of said first inductive element.

4 more elements

Dependencies are inferred from the claim text.

Induction sealing device for heat sealing packaging material for producing sealed packages of pourable food products

Life of this patent

Induction sealing device for heat sealing packaging material for producing sealed packages of pourable food products

Life of this patent

Abstract

Claims13