Patent ID: 6439430
Filing Date: 2002-08-27
Classification: B65B

Abstract:
An improved collapsible bag for containing a product to be dispensed from an aerosol container, the improved collapsible bag having an opening at one end and being closed at an opposite end, the improved collapsible bag comprising:an upper section including a cud portion, a neck portion and an outwardly tapering section, and the outwardly tapering section tapering outwardly in an inflated state of the improved collapsible bag; a mid-section contiguous with the outwardly tapering section, the mid-section being generally cylindrical in shape; a lower section contiguous with the mid-section and defining the closed end of the improved collapsible bag, and the lower section tapering inwardly in an inflated state of the improved collapsible bag; at least the curt portion of the upper section having a sufficient first wall thickness to facilitate a fluid tight seal between a bead and a perimeter curl of a mounting cup during assembly of an aerosol valve, the outwardly tapering section, the mid-section and the lower section having a second wall thickness less than the first wall thickness to facilitate insertion of the improved collapsible bag into the aerosol container during assembly, to promote collapse of the improved collapsible bag during dispensing of the product to be dispensed, and to facilitate substantially complete dispensing of the product from the improved collapsible bag; and a small radius transition between the neck portion and the outwardly tapering section having a sufficiently sized minimum inner diameter so that the small radius transition is spaced from an exterior surface of an actuator assembly when the mounting cup is secured to the curl portion of the improved collapsible bag, the small radius transition has a gradual transition from the first wall thickness to the second wall thickness, the small radius transition provides a reduced diameter area which partially separates the opening from the remainder of the improved collapsible bag, and the small radius transition promotes bending of the outwardly tapering section when the improved collapsible bag is filled with the desired product to be dispensed.