Induction foil cap sealer
AssigneeKaps-All Packaging Systems Inc.
InventorsFrederick W Sarles, Douglas A Johnson
Life of this patent
Estimating the term…
Abstract
An sealing system includes a frame, a ferrite core disposed within the frame, and a litz wire coil disposed proximate to the ferrite core for producing an electromagnetic field within the ferrite core, where the ferrite core and litz wire coil are adapted to direct the electromagnetic field toward a foil to seal an opening of a container with the foil. The sealing head is air cooled within the induction sealing unit.
Claims21
A cap sealing unit, comprising:
- an electromagnetic field generator;
- an electromagnetic field projector that projects the electromagnetic field toward an electrically conductive foil to seal an opening of a container with the foil;
- and
- a water-free cooling feature that cools the cap sealing unit,
- wherein the electromagnetic field generator includes a litz wire coil.
A method for sealing an opening of a container with a foil, the method comprising:
- a) generating an electromagnetic field with a source;
- b) directing the electromagnetic field toward an electrically conductive foil to seal an opening of a container;
- and
- c) cooling the source of the electromagnetic field without water;
- wherein a litz wire coil is used in generating the electromagnetic field.
A cap sealing unit, comprising:
- an electromagnetic field generator;
- an electromagnetic field projector to project the electromagnetic field toward an electrically conductive foil to seal an opening portion of a container with the foil, the electromagnetic field projector including a recess formed to receive the opening portion of a container and the foil;
- and
- a water-free cooling feature to cool the cap sealing unit without using water;
- wherein the electromagnetic field generator includes a litz wire coil.
A method for sealing an opening of a container with a foil, the method comprising:
- a) generating an electromagnetic field with a source;
- b) projecting the electromagnetic field toward an electrically conductive foil to seal an opening of a container by adapting a ferrite core and a litz wire coil to form a recess to receive an opening portion of a container and a foil located proximate to the opening portion;
- and
- c) cooling the source of the electromagnetic field without water.
Dependencies are inferred from the claim text.