Device for sealing a packaging

Patent metadata

Field	Value
Publication number	US-10843833-B2
Application number	US-201815961496-A
Country	US
Kind code	B2
Filing date	Apr 24, 2018
Priority date	Apr 28, 2017
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

The present invention relates to a device for sealing a packaging material ( 10 ), comprising at least one sealing installation ( 18 ) which comprises at least one coil core ( 24 ) which is surrounded by at least one coil ( 25 ), wherein the coil core ( 24 ) has at least one gap ( 32 ) through which packaging material peripheries ( 34, 36 ) to be sealed are guided, wherein at least one element ( 23 ) that conducts a magnetic flux is provided, said element ( 23 ) for influencing a region ( 22 ) of the packaging material peripheries ( 34, 36 ) to be heated being disposed so as to be adjacent to the packaging material peripheries ( 34, 36 ) to be sealed.

First claim

The invention claimed is:

1. A device for sealing a packaging material ( 10 ) having packaging material peripheries ( 34 , 36 ) to be sealed, the packing material peripheries ( 34 , 36 ) having a polymer layer and a conductive layer, the device comprising at least one sealing installation ( 18 ) which comprises at least one coil core ( 24 ) which is surrounded by at least one coil ( 25 ) for generating a magnetic field, wherein the coil core ( 24 ) has at least one gap ( 32 ) configured to have the packaging material peripheries ( 34 , 36 ) guided therethrough, the device further comprising at least one element ( 23 ) that is located and configured to conduct a magnetic flux for focusing the magnetic field onto a desired region ( 22 ) of the packaging material peripheries ( 34 , 36 ) being guided through the gap ( 32 ) so as to heat and seal the packaging material peripheries ( 34 , 36 ) being guided through the gap.

2. The device according to claim 1 , characterized in that the element ( 23 ) at least partially surrounds the packaging material peripheries ( 34 , 36 ) being guided through the gap.

3. The device according to claim 1 , characterized in that the element ( 23 ) is at least partially enclosed by the coil core ( 24 ).

4. The device according to claim 1 , characterized in that the element ( 23 ) is configured so as to be movable relative to the coil core ( 24 ).

5. The device according to claim 1 , characterized in that the element ( 23 ) is configured so as to be U-shaped.

6. The device according to claim 1 , characterized in that at least one contact pressure installation ( 54 ) which mutually compresses the two packaging material peripheries ( 34 , 36 ) is provided.

7. The device according to claim 6 , characterized in that the contact pressure installation ( 54 ) is contiguous to the sealing installation ( 18 ).

8. The device according to claim 1 , characterized in that the device is configured for establishing a longitudinal seam in the packaging material.

9. The device according to claim 1 , characterized in that the element ( 23 ) is at least partially composed of manganese and/or zinc.

10. The device according to claim 1 , characterized in that the device is configured for establishing a fin seal in the packaging material.

11. A device for sealing a packaging material ( 10 ) having packaging material peripheries ( 34 , 36 ) to be sealed, the device comprising at least one sealing installation ( 18 ) which comprises at least one coil core ( 24 ) which is surrounded by at least one coil ( 25 ) for generating a magnetic field, wherein the coil core ( 24 ) has at least one gap ( 32 ) configured to have the packaging material peripheries ( 34 , 36 ) guided therethrough, the device further comprising at least one element ( 23 ) that is located and configured to conduct a magnetic flux for focusing the magnetic field onto a desired region ( 22 ) of the packaging material peripheries ( 34 , 36 ) being guided through the gap ( 32 ) so as to heat and seal the packaging material peripheries ( 34 , 36 ) being guided through the gap, characterized in that the element ( 23 ) comprises at least one recess ( 50 ) which opens towards the gap ( 32 ) and through which the packaging material peripheries ( 34 , 36 ) being guided through the gap pass.

12. The device according to claim 11 , characterized in that the element ( 23 ) is at least partially enclosed by the coil core ( 24 ).

13. The device according to claim 11 , characterized in that the recess ( 50 ) of the element ( 23 ) is disposed so as to be aligned with the gap ( 32 ).

14. The device according to claim 11 , characterized in that the element ( 23 ) is configured so as to be movable relative to the coil core ( 24 ).

15. The device according to claim 11 , characterized in that the element ( 23 ) is configured so as to be U-shaped.

16. The device according to claim 11 , characterized in that at least one contact pressure installation ( 54 ) which mutually compresses the two packaging material peripheries ( 34 , 36 ) is provided.

17. The device according to claim 16 , characterized in that the contact pressure installation ( 54 ) is contiguous to the sealing installation ( 18 ).

18. The device according to claim 11 , characterized in that the device is configured for establishing a longitudinal seam in the packaging material.

19. The device according to claim 11 , characterized in that the element ( 23 ) is at least partially composed of manganese and/or zinc.

20. The device according to claim 11 , characterized in that the device is configured for establishing a fin seal in the packaging material.

21. A device for sealing a packaging material ( 10 ) having packaging material peripheries ( 34 , 36 ) to be sealed, the device comprising at least one sealing installation ( 18 ) which comprises at least one coil core ( 24 ) which is surrounded by at least one coil ( 25 ) for generating a magnetic field, wherein the coil core ( 24 ) has at least one gap ( 32 ) configured to have the packaging material peripheries ( 34 , 36 ) guided therethrough, the device further comprising at least one element ( 23 ) that is located and configured to conduct a magnetic flux for focusing the magnetic field onto a desired region ( 22 ) of the packaging material peripheries ( 34 , 36 ) being guided through the gap ( 32 ) so as to heat and seal the packaging material peripheries ( 34 , 36 ) being guided through the gap, characterized in that the coil core ( 24 ) has at least one interior space ( 31 ) surrounded by the coil core ( 24 ), wherein the gap ( 32 ) opens into the interior space ( 31 ), and wherein the element ( 23 ) is disposed in the interior space ( 31 ).

22. The device according to claim 21 , characterized in that the element ( 23 ) at least partially surrounds the packaging material peripheries ( 34 , 36 ) being guided through the gap.

23. The device according to claim 21 , characterized in that the element ( 23 ) is configured so as to be movable relative to the coil core ( 24 ).

24. The device according to claim 21 , characterized in that the element ( 23 ) is configured so as to be U-shaped.

25. The device according to claim 21 , characterized in that at least one contact pressure installation ( 54 ) which mutually compresses the two packaging material peripheries ( 34 , 36 ) is provided.

26. The device according to claim 25 , characterized in that the contact pressure installation ( 54 ) is contiguous to the sealing installation ( 18 ).

27. The device according to claim 21 , characterized in that the device is configured for establishing a longitudinal seam in the packaging material.

28. The device according to claim 21 , characterized in that the element ( 23 ) is at least partially composed of manganese and/or zinc.

29. The device according to claim 21 , characterized in that the device is configured for establishing a fin seal in the packaging material.

30. The device according to claim 21 , wherein the element ( 23 ) has a recess ( 50 ) opening towards the gap ( 32 ) and wherein the recess ( 50 ) and the gap ( 32 ) have substantially equal widths.

Assignees

• Bosch Gmbh Robert

Inventors

• Ternes David
• Egli Marcel
• Steinemann Rolf
• Wieduwilt Ulrich

Classifications

• B65B11/12

  and then to form closing folds of similar form at opposite ends of the tube · CPC title

• B65B2220/08

  Creating fin seals as the longitudinal seal on horizontal or vertical form fill seal [FFS] machines · CPC title

• B29C66/83413

  cooperating rollers, cylinders or drums · CPC title

• B65D75/12

  with the ends of the tube closed by flattening and heat-sealing · CPC title

• B29C66/133

  Fin-type joints, the parts to be joined being flexible (the parts to be joined being rigid B29C66/1312) · CPC title