Molded collapsible solution container having gusset portions

Claim 1

A molded collapsible solution container, which container defines a body portion having an integral neck portion and generally oval, relatively stiff shoulder portion at one end thereof, and is sealed at its end opposite said one end, the improvement comprising: said body portion defining, in its original, unstressed configuration, a generally oval, transverse cross-section adjacent said neck and shoulder portion, said cross-section tapering progressively to flat configuration at said end of the container opposite to said one end, to facilitate a uniform, flat collapse of said container progressively from said opposite end toward said one end as the contents thereof are withdrawn through said neck portion when said container is disposed in neck-downward position, said container also defining gusset portions in said body portion adjacent said shoulder portion, said gusset portions including lines of flexing weakness to facilitate collapse of said container adjacent said shoulder portion as the contents thereof are withdrawn, said gusset portions defining three sides in triangular relationship, one of said sides being adjacent and parallel to a shoulder tip at the ends of the major axis of said oval shoulder portion, and the other two sides extending from said one side of the gusset portion toward each other, said container being free of additional lines of flexing weakness positioned longitudinally of said container adjacent said neck and shoulder portion.