One-way valve for flexible package, method of making the...

Details One-way valve for flexible package, method of making the... One-way valve for flexible package, method of making the...

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 15/14 (2006.01) B65D 77/22 (2006.01)

Patent

CA 2750897

A one-way valve (20) and a flexible package (10) including the valve are disclosed. The valve basically comprises a base member (22), a flexible septum (24) and a stake (36). The base member is mounted on a wall (12) of the package and includes a valve seat (32) and at least one inlet port (34). The septum is formed of a resilient material and is connected to the base member by the stake, with a first portion of the septum contiguous with the stake fixed in position with respect to the base member and a second portion of the septum engaging the valve seat and covering and sealing the at least one inlet port. The septum is arranged to flex off of the valve seat to unseal the at least one inlet port when the pressure of gas at the at least one inlet port reaches a threshold.

L'invention porte sur une soupape unidirectionnelle (20) et sur un emballage souple (10) comprenant la soupape. La soupape comprend basiquement un élément de base (22), une cloison souple (24) et une excroissance (36). L'élément de base est monté sur une paroi (12) de l'emballage et comprend un siège de soupape (32) et au moins un orifice d'entrée (34). La cloison est formée d'un matériau élastique et est reliée à l'élément de base par l'excroissance, une première partie de la cloison étant contigüe à l'excroissance fixe par rapport à l'élément de base, et une seconde partie de la cloison étant en prise avec le siège de soupape et recouvrant et scellant de façon étanche le ou les orifices d'entrée. La cloison est agencée pour s'infléchir hors du siège de soupape pour desceller le ou les orifices d'entrée lorsque la pression du gaz au niveau du ou des orifices d'entrée atteint un seuil.

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