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1. (WO2013162636) MULTI-LAYER ONE-WAY VALVE FOR PACKAGING

Pub. No.:    WO/2013/162636    International Application No.:    PCT/US2012/046851
Publication Date: Fri Nov 01 00:59:59 CET 2013 International Filing Date: Tue Jul 17 01:59:59 CEST 2012
IPC: B65D 77/22
Applicants: CCL LABEL, INC.
GARDNER, David
SHIM, Anne
Inventors: GARDNER, David
SHIM, Anne
Title: MULTI-LAYER ONE-WAY VALVE FOR PACKAGING
Abstract:
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.