Patent ID: 6651850
Filing Date: 2003-11-25
Classification: B29C,B29K,B65D

Abstract:
A unitary flexible barrier for use in a plural-zoned, valved pressure container comprising:a shaped spatial form having an open end providing a terminal sealing means, a flexible wall portion joined to the terminal sealing means at one end of the wall portion, and to a central piston region at the other end of the wall portion, said sealing means, wall portion and piston region being formed as a rigid unitary spatial form with sufficient rigidity to maintain its shape prior to insertion into and use in a plural-zoned pressure container; said terminal sealing means being adapted for sealing in a container to form a propellant zone and a product zone; and, said wall portion having a steeply frustoconical shape and extending upwardly from the terminal sealing means to the piston region, said wall portion being dimensioned for insertion into the bottom or top of a container to form an initial spaced relationship with the inner side container surface and a nesting ledge extending outwardly from the wall portion at a position adjacent the terminal sealing means.