Container closure for flexible containers

Container closure apparatus comprising:

• a rigid container having an open end with a top edge;
• flexible pouch means, disposed within said rigid container, for containing a liquid, said flexible pouch means having a collapsible side wall and an open end, said flexible pouch means having a length greater than said rigid container and including means, defining a narrow region in said collapsible side wall, for enabling inward folding of said collapsible side wall and containment of said flexible pouch means within said rigid container;
• cap means for covering the rigid container and flexible pouch means open ends;
• plug seal means for providing a primary seal between said rigid container and said flexible pouch means, said plug seal means comprising, in combination, a peripheral outwardly extending wall on said flexible pouch means and depending portion means, extending from said cap means, for pressing the extending wall against an inside wall of said rigid container;
• gasket seal means for providing a secondary seal between said rigid container and said flexible pouch means, said gasket seal means comprising, in combination, a lip outwardly extending from said flexible pouch means open end and groove means, disposed in said cap means, for pressing said lip against the rigid container tip edge;
• means for securing said cap means to said rigid container in a position enabling the depending portion means to press the extending wall against the rigid container inside wall and enabling the groove means to press said lip against the rigid container top edge;
• and
• rib means for maintaining the plug seal means and gasket seal means.