Patent ID: 6273307
Filing Date: 2001-08-14
Classification: B65D,Y10S

Abstract:
A fitment for being sealed to a collapsible pouch having two opposed, flexible web portions sealed to one another so as to define an interior region and so as to define an opening, which opens to the interior region and which is adapted to receive the fitment when the fitment is sealed to the collapsible pouch,the fitment having a body having at least one side wall portion, which is provided with spaced steps defining spaced shoulders, the body having an inner end, which faces the interior of the collapsible pouch when the fitment is sealed to the collapsible pouch, the body having an outer end and defining a reference plane,the body defining a range of peripheral dimensions, each of which is measured around one of the spaced steps or around one of the spaced shoulders, in a plane that is located at one of the inner and outer ends or between the inner and outer ends and that coincides with or is parallel to the reference plane, the peripheral dimensions increasing from a smallest dimension at or toward one said end, through intermediate dimensions that between the inner and outer ends do not decrease after increasing, to a largest dimension at or toward the other end; andeach of said spaced shoulders including a tapered sealing surface that is oblique to, and defined between, an adjacent surface of said sidewall portion and an adjacent one of said steps, the following relationships being defined with reference to measurements on cross-sectional planes through said body perpendicular to said reference plane:(1) said tapered sealing surface having a maximum lateral dimension at said adjacent surface and a minimum lateral dimension at said adjacent step,(2) said adjacent surface having a minimum lateral dimension at least as great as the maximum lateral dimension of said tapered sealing surface,(3) said minimum lateral dimension of said tapered sealing surface being at least as great as the maximum lateral dimension of said step,(4) said body sidewall portion being free of undercuts that would prohibit straight-pull mold action after said fitment is molded in a mold assembly, and(5) said tapered sealing surfaces are spaced apart for limiting the sealing of said web to said body sidewall portion only at spaced apart locations.