MULTI-LAYER ONE-WAY VALVE FOR PACKAGING

摘要

A multi-layer one-way valve (100) includes: a first layer (10) having at least one first opening (12) formed therein; a second layer (20) having at least one second opening (22) formed therein; and, a third layer (30). The first and second layers are joined together such that at least one first channel (14) is defined therebetween, and the second and third layers are joined together such that at least one second channel (24) is defined therebetween. Additionally, an amount of flow-able liquid is deposited in the first channel between the first and second openings. Suitably, the valve selectively opens to permit gas flow through the first and second channels in response to a pressure differential, the rate of gas flow through the valve is exponentially proportional to the pressure differential.

主权项

1. A one-way valve comprising:
a plurality of layers arranged one over another; and a selectively openable and closable path extending through said layers to selectively permit and inhibit respectively a flow of gas through the valve via said path; wherein said path opens in response to a pressure differential on opposing sides of the valve exceeding an opening threshold, and when said path is opened a flow rate of gas through said valve is exponentially proportional to the pressure differential.