| 摘要 |
<p>[Task] It is to provide a flexible package bag equipped with a film-shape non-return nozzle wherein a pouring amount of a liquid packed material can be stabilized by rectifying a pouring flow of the liquid packed material and also the liquid packed material can be poured smoothly even if the amount of the liquid packed material in the bag is small, and further the pouring performance and breaking resistance of the bag can be improved by reinforcing the film-shaped non-return nozzle. [Solution for task] A flexible package bag formed by fusion-joining a base end portion of a film-shaped non-return nozzle having an outer non-return function of preventing penetration of ambient air into the bag to inner surfaces of a side portion of a main package bag body composed of plastic laminate films and projecting therefrom, characterized in that a seal section for rectification/reinforcement formed by fusing two opposed plastic laminate films is disposed at a position near to the main package bag body including a lower portion of a fused section to the base end portion of the film shaped non-return nozzle.</p> |
