Induction sealing device
An induction sealing device for heat sealing packaging material for producing sealed packages of pourable food products, the sealing device comprising: an inductor configured to induce a current in the packaging material, the inductor comprising conductor elements; a polymer insert holding the conductor elements; and a supporting body holding the polymer insert; wherein the polymer insert comprises a polymer matrix into which graphene particles are dispersed.
1. An induction sealing device for heat sealing packaging material for producing sealed packages of pourable food products, said sealing device comprising:
an inductor configured to induce a current in the packaging material, the inductor comprising conductor elements;
a polymer insert holding said conductor elements; and
a supporting body holding said polymer insert;
wherein the polymer insert comprises a polymer matrix into which graphene particles are dispersed; and
wherein the polymer insert comprises magnetic particles dispersed into the polymer matrix of the polymer insert, whereby the polymer insert forms a flux-concentrating insert.
2. The induction sealing device of claim 1 , wherein a concentration of graphene particles in the polymer insert is below a threshold of 15%.
3. The induction sealing device of claim 1 , wherein the polymer insert further comprises electrically insulating particles dispersed into the polymer matrix of the polymer insert.
4. The induction sealing device of claim 3 , wherein the electrically insulating particles comprise boron nitride particles.
5. The induction sealing device of claim 4 , wherein a concentration of boron nitride particles in the polymer insert is below a threshold of 20%.
6. The induction sealing device of claim 1 , wherein the polymer insert is configured to have a thermal conductivity above a threshold of 0.2 W/(mK).
7. The induction sealing device of claim 1 , wherein the polymer matrix of the polymer insert is polyphenylene sulfide.
8. The induction sealing device of claim 1 , wherein the polymer insert comprises reinforcing fibers.
9. The induction sealing device of claim 1 , further comprising at least one groove separating two conductor elements.
10. The induction sealing device of claim 1 , wherein the supporting body is made of metal.
11. The induction sealing device of claim 1 , wherein the polymer insert is configured such that the polymer matrix with dispersed particles has a melt flow rate, measured in g/10 min, above a threshold of 40, when the polymer matrix is in a melted form.
12. An induction sealing device for heat sealing packaging material for producing sealed packages of pourable food products, said sealing device comprising:
an inductor configured to induce a current in the packaging material, the inductor comprising conductor elements;
a polymer insert holding said conductor elements; and
a supporting body holding said polymer insert;
wherein the polymer insert comprises a polymer matrix into which graphene particles are dispersed; and
wherein the polymer insert is configured to hold a flux-concentrating insert, wherein the flux-concentrating insert comprises a polymer matrix into which magnetic particles are dispersed.
13. The induction sealing device of claim 12 , wherein a concentration of graphene particles in the polymer insert is below a threshold of 15%.
14. The induction sealing device of claim 12 , wherein the polymer insert further comprises electrically insulating particles dispersed into the polymer matrix of the polymer insert.
15. The induction sealing device of claim 14 , wherein the electrically insulating particles comprise boron nitride particles.
16. The induction sealing device of claim 15 , wherein a concentration of boron nitride particles in the polymer insert is below a threshold of 20%.
17. The induction sealing device of claim 12 , wherein the polymer insert is configured to have a thermal conductivity above a threshold of 0.2 W/(mK).
18. The induction sealing device of claim 12 , wherein the polymer matrix of the polymer insert is polyphenylene sulfide.
19. The induction sealing device of claim 12 , wherein the polymer insert comprises reinforcing fibers.
20. The induction sealing device of claim 12 , further comprising at least one groove separating two conductor elements.
21. The induction sealing device of claim 12 , wherein the supporting body is made of metal.
22. The induction sealing device of claim 12 , wherein the polymer insert is configured such that the polymer matrix with dispersed particles has a melt flow rate, measured in g/10 min, above a threshold of 40, when the polymer matrix is in a melted form.