Valve

摘要

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.

主权项

1. 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.