Packages made with both high-frequency/radio-frequency seals and conventional heat/pressure seals using combinations of polar and non-polar polymers
AssigneeTenneco Packaging
InventorJay M. Wiley
Life of this patent
Estimating the term…
Abstract
A package having multiple seals in close proximity is set forth. At least one of the seals is accomplished through the use of a polar polymer that bonds to an opposing panel in the package when exposed to an alternative electromagnetic field. The strength of the sealing can be controlled by the type and the amount of the polar polymer that is present as well as the field strength of the electromagnetic radiation, and its duration. The region to be sealed by the electromagnetic radiation can also be precisely controlled.
Claims31
A method of manufacturing a polymeric package having multiple seals adjacent to each other, said method comprising the steps of:
- providing said package having a segment containing a polar polymer where at least one of said multiple seals is to be placed;
- sealing at least another of said multiple seals by a conventional sealing technique;
- and
- exposing said segment having said polar polymer to an alternating electromagnetic field.
A method of making a polymeric package having at least two components, said at least two components being sealed to each other by first and second seals that are adjacent to each other, said first seal being located within an interior of said package, one component of said at least two components having a segment containing a polar polymer to form said first seal, said method comprising the steps of:
- providing said at least two components of said package;
- attaching said at least two components to one another at portions so as to develop said interior and an opening of said package;
- sealing two of said at least two components by a conventional seal technique at said second seal;
- and
- exposing said one component having said segment containing said polar polymer to an alternating electromagnetic field so as to seal said one component to another of said at least two components at said first seal.
Dependencies are inferred from the claim text.