Method of reducing failure of pressurized container valves

Details Method of reducing failure of pressurized container valves Method of reducing failure of pressurized container valves

B - Operations, Transporting

65

D

222/54

B65D 83/14 (2006.01) B65B 31/00 (2006.01)

Patent

CA 1177024

ABSTRACT OF THE DISCLOSURE Valves connected to dip tubes in conventional pressurized "aerosol"- type containers for dispensing materials which react ox cure upon dispensing (e. g. moisture-curable polyurethanes), are protected against premature failure by introducing a small amount of dry, inert gas into the dip-tube shortly after charging the container. The gas (e. g. nitrogen) acts as a barrier to prevent contact between the product in the container and the valve mechanism prior to use of the product. Preventing such con-tact avoids premature hardening of pro- duct in the valve mechanism caused by reaction of product with moisture.

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