Bimodal storage and dispensing package including self-sealing dispensing valve to provide automatic shut-off and leak-resistant inverted storage

Abstract From the Canadian patent

A flexible storage and dispensing package for fluid material. The package has a first mode of operation capable of storing the fluid material without leakage when the package is subjected to unintentional external forces and a second mode of operation capable of dispensing the fluid material when the package is subjected to external forces intentionally applied by the user. The second mode of operation is capable of dispensing the fluid material through a discharge orifice in response to manually applied forces and of automatically ceasing the dispensing operation when the manually applied forces are removed. The package is also resistant to leakage in the second mode of operation when …