Cap with one-way de-gas feature

Details Cap with one-way de-gas feature Cap with one-way de-gas feature

B - Operations, Transporting

65

D

B65D 47/32 (2006.01) B65D 41/04 (2006.01) B65D 51/16 (2006.01) B65D 75/58 (2006.01)

Patent

CA 2391152

A cap with a way-one valve solves two distinct problems in the field of packaging materials that emit gasses; providing both a means to prevent a package from deforming under pressure built up inside the package, and a means to reseal the package. The cap comprises an inner wall extending downwardly from an inner portion of the top wall to define a cavity. An insert valve is mounted within the cavity, forming a sear with the inside wall. The upper surface of the insert valve, inner wall; and the top wall define a chamber with a gas escape path. A septum is disposed within the chamber, the septum seated on the insert valve and sealing one or more apertures in the insert valve: The septum is capable of at least partially unseating in response to force exerted by increased gas pressure acting through the apertures.

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