Method and system for ultrasonic sealing of food product packaging
A method and system for ultrasonic sealing of food product packaging is provided. The ultrasonic sealing system preferably includes a food product packaging-positioning system that delivers food product packaging and food product into direct on-item-packaging forming box. The direct on-item-packaging forming box then receives the food product packaging and forms it directly around the supplied food product forming a partially packaged food product. The partially packaged food product is then ultrasonically edge sealed around the food product by an ultrasonic food product packaging fin-sealing unit forming a partially sealed food product packaging. The partially sealed food product packaging then enters a food product packaging end-sealing unit which ultrasonically seals and crimps the ends of the food product packaging resulting in a fully packaged and ultrasonically sealed food product.
1. A method for ultrasonically sealing food product packaging, said method including:
sealing food product packaging by passing said food product packaging between an operably positioned rotating anvil and an ultrasonically activated rotating horn,
wherein said rotating anvil has a plurality of anvil sealing surfaces distributed radially around said rotating anvil, and
wherein said rotating horn has a plurality of horn sealing surfaces distributed radially around said rotating horn,
wherein said food product packaging is passed between one of said plurality of horn sealing surfaces and one of said plurality of anvil sealing surfaces,
wherein said rotating anvil rotates around a first axis of rotation and said rotating horn rotates around a second axis of rotation different from said first axis of rotation
wherein a plurality of said plurality of anvil sealing surfaces are positioned at a fixed distance from said first axis of rotation,
wherein said ultrasonically activated rotary horn rotates completely around said access of rotation so that at a first time a first of said plurality of horn sealing surfaces is operably positioned with respect to said rotating anvil wheel and so that at a second time a second of said plurality of horn sealing surfaces is operably positioned with respect to said rotating anvil wheel,
wherein an ultrasonic converter is positioned axially to said ultrasonically activated rotating horn,
wherein said ultrasonic converter causes said ultrasonically activated rotary horn to vibrate transversely to the radial direction of said rotating horn.
2. The method of claim 1 wherein said horn includes four horn sealing surfaces.
3. The method of claim 1 wherein said anvil includes four sealing surfaces.
4. The method of claim 1 further including:
ultrasonically cutting said food product packaging while sealing said food product packaging.
5. The method of claim 1 further including:
continuously advancing said food product packaging while sealing said food product packaging.
6. The method of claim 1 wherein said food product is a confectionery product.
7. A system for ultrasonically sealing food product packaging, said system including:
a rotating anvil, said anvil having a plurality of anvil sealing surfaces distributed radially around said rotating anvil, wherein said rotating anvil rotates around a first axis of rotation, wherein a plurality of said plurality of anvil sealing surfaces are positioned at a fixed distance from said first axis of rotation;
an ultrasonically activated rotating horn operably positioned with respect to said rotating anvil wheel, said rotating horn having a plurality of horn sealing surfaces distributed radially around said rotating horn, wherein said rotating horn rotates around a second axis of rotation different from said first axis of rotation,
wherein said ultrasonically activated rotary horn rotates completely around said access of rotation so that at a first time a first of said plurality of horn sealing surfaces is operably positioned with respect to said rotating anvil wheel and so that at a second time a second of said plurality of horn sealing surfaces is operably positioned with respect to said rotating anvil wheel; and
an ultrasonic converter positioned axially to said ultrasonically activated rotating horn,
wherein said ultrasonic converter causes said ultrasonically activated rotary horn to vibrate transversely to the radial direction of said rotating horn.
8. The system of claim 7 wherein said horn includes four horn sealing surfaces.
9. The system of claim 7 wherein said anvil includes four sealing surfaces.
10. The system of claim 7 wherein said anvil and horn are adapted to ultrasonically cut said food product packaging while sealing said food product packaging.
11. The system of claim 7 wherein said horn and anvil seal said food product packaging while said food product packaging is continuously advanced.
12. The system of claim 7 wherein said food product is a confectionery product.