| 摘要 |
A fitment for being sealed to a collapsible pouch has a body having at least one side wall portion, which is provided with spaced steps defining spaced shoulders, an inner end, which faces the interior of the collapsible pouch when the fitment is sealed to the collapsible pouch, and an outer end. The body of the fitment defines a reference plane and 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 increase from a smallest dimension at or toward one such end, through intermediate dimensions which between the inner and outer ends do not decrease after increasing, to a largest dimension at or toward the other end. Preferably, as viewed from either of the inner and outer ends, the body of the fitment has a substantially boat-shaped periphery defining two opposite edges and two opposite, side wall portions, each having such steps defining such shoulders. A fin projects from each of the opposite edges. Each shoulder has a sealing surface for sealing to one of two web portions of the collapsible pouch when the fitment is received by an opening of the collapsible pouch. The sealing surfaces taper outwardly or inwardly from one such end of the fitment toward the other end of the fitment. |
