Overpressure relief valve for packaging container

Details Overpressure relief valve for packaging container Overpressure relief valve for packaging container

B - Operations, Transporting

65

D

B65D 51/16 (2006.01) B65D 55/00 (2006.01) B65D 77/22 (2006.01)

Patent

CA 2427727

A membrane type pressure relief valve for packaging containers. The valve comprises a plastic overlay that is formed in a way that causes the center portion of the valve to be pre-stressed when applied to a base sheet or a package wall. The forming of the overlay and its subsequent deformation after application to the base sheet or package wall causes the overlay to act as a mechanical assist to close the valve when the valve oil does not fully force the valve closed.

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