Patent ID: 6578740
Filing Date: 2003-06-17
Classification: B65D

Abstract:
A container comprising:a self-standing container body including a wall formed of a soft sheet and a bottom, wherein said bottom is expandable when content is contained within said self-standing container body such that said container stands unaided; a pouring port disposed at an end portion of said self-standing container; a check valve mounted in said pouring port, said check valve being operable to open when a pressure within said self-standing container in greater than a pressure outside of said self-standing container and close when the pressure outside of said self-standing container is greater than the pressure within the self-standing container, wherein an inside of said container is evacuated by a vacuum that is established by a weight of the content contained within said self-standing container body; and a joint structure joining said soft sheet with said pouring port, said joint structure comprising a heat-shrinkable first cylindrical sheet in which a portion of said pouring port is inserted and heat shrunk within, and a second cylindrical sheet that is partially heat shrunk within said heat-shrinkable first cylindrical sheet, said second cylindrical sheet including a resin layer fused to said soft sheet and an infusible resin layer located inside said resin layer, wherein said heat-shrinkable first cylindrical sheet is also fused to said soft sheet.