Valve
AssigneeMicvac AB
InventorMartin Gustavsson
Life of this patent
Estimating the term…
Abstract
A one-way valve is disclosed, particularly for foodstuff packages, the valve designed to be mounted on a package and arranged to open in response to an excess pressure inside said package. The valve includes an aperture formed in the package material. On top of the aperture an adhesive layer is arranged. The adhesive layer is arranged in such a manner that the valve, upon opening, exhibits a pre-defined channel allowing passage-through.
Claims19
A valve designed to be mounted on a package having an aperture and arranged to open in response to an excess pressure inside said package, said valve comprising:
- a first adhesive layer arranged in use to cover said aperture in the package, the first adhesive layer being formed with an aperture corresponding with the aperture of the package;
- and
- an additional resilient adhesive layer arranged on top of the first adhesive layer, the first and additional resilient adhesive layers being joined together in such a manner that the valve upon opening, exhibits a pre-defined channel allowing passage-through between the first and additional resilient adhesive layers,
- wherein the first and additional resilient adhesive layers are joined together by a weld seam, forming a depression, along long sides of the valve, and in the area excluding the weld seam, only a single-type adhesive of said additional resilient adhesive layer is present on an entire inner surface of thereof including an area corresponding to the pre-defined channel formed between the first and additional resilient adhesive layers.
A package for processing foodstuff, comprising:
- a tray having an opening configured to hold foodstuff therein;
- a film configured to enclose the opening of the tray, the film includes an aperture;
- and
- a valve designed to be mounted over the aperture of the film and arranged to open in response to an excess pressure inside said package, said valve includes:
- a first adhesive layer arranged in use to cover said aperture in the package, the first adhesive layer being formed with an aperture corresponding with the aperture of the package;
- and
- an additional resilient adhesive layer arranged on top of the first adhesive layer, the first and additional resilient adhesive layers being joined together in such a manner that the valve upon opening, exhibits a pre-defined channel allowing passage-through between the first and additional resilient adhesive layers,
- wherein the first and additional resilient adhesive layers are joined together by a weld seam, forming a depression, along long sides of the valve, and in the area excluding the weld seam, only a single-type adhesive of said additional resilient adhesive layer is present on an entire inner surface of thereof including an area corresponding to the pre-defined channel formed between the first and additional resilient adhesive layers.
Dependencies are inferred from the claim text.