Flaccid bottom delivery package having a self-sealing closure for dispensing liquid materials

A flaccid and lightweight bottom delivery package for storing and dispensing fluid products, said package comprising:

• (a) a tubular container for housing said fluid product, said container comprising a front panel and a back panel of flexible material, said panels being sealed along their top and side peripheral edges, said container having a closed top and an open bottom;
• (b) a gusset panel sealingly secured to said bottom of said container and having a discharge orifice disposed therein, said discharge is disposed in the center of said gusset panel and said gusset panel having a concave configuration so as to direct all of the fluid product down towards said discharge orifice, said gusset panel being secured to said container so as to define a stand up base comprising said gusset panel and a portion of said tubular container below said gusset panel, said base allowing said package to stand alone on a flat surface;
• (c) a self-sealing valve sealingly secured to said discharge orifice, said valve having a closed position so as to substantially prevent unwanted leakage of fluid when said package is not in use, said valve also having an open position for dispensing said fluid through said discharge orifice in response to manual squeezing forces being applied to said container, said valve being able to return to its closed position upon removal of said manual squeezing forces so as to substantially stop the dispensing of said product through said discharge orifice, said self-sealing valve being attached to said gusset panel by means of a gland, said gland comprising an enclosed tubular neck having two open ends, said self-sealing valve being disposed at one end and an outwardly extending annular flange being disposed at the other end, said annular flange being sealed to the interior surface of said gusset panel about said discharge orifice;
• (d) said self-sealing valve comprising a upwardly concave face having at least one slit disposed therein, said face being connected to said gland by means of a resilient annular wall, such that when said manual squeezing forces are applied to said container said concave face and said annular wall move outwardly causing said fluid product to dispense through said slit, whereby when said manual squeezing forces are removed said concave face and said annular wall return to their original position thereby ceasing said dispensing through said slit;
• (e) a removable cap covering said valve so as to present unwanted discharge of fluid product through said valve when transporting said package;
• and
• (f) a means, adjacent the top end of said package, for hanging said package from a support, said means comprising an aperture extending through said top end of said package, said container being sealed about said aperture to prevent leakage of said liquid product through said container.