Flexible package bag provided with one-way functioning nozzle and liquid material-filled packaging structure

Abstract

Disclosed is a non-self standing type flexible package bag provided with a film-shaped one-way pouring nozzle which is excellent not only in the non-return function and liquid cutting properties but also in the pouring property of a liquid packing material as a filling substance (capable of smoothly pouring the packing material in the bag until the end). The flexible package bag is constituted by protruding the film-shaped one-way pouring nozzle from a side portion of a package bag main body in which a laminate film in a non-seal portion of the package bag main body has an irregular inner surface in at least an upper part thereof or in the vicinity of a side edge side the film-shaped one-way pouring nozzle.

1 - 14 . (canceled) 
     
     
         15 . A flexible package bag provided with a nozzle of a non-return function comprising a package bag main body formed by seal-joining front-side and rear-side flexible laminate films, and a film-shaped ambient air-penetration preventing type one-way pouring nozzle protruded from a side portion of the package bag body and formed by closing a pair of overlapping plastic films to each other in the presence of a liquid packing material, characterized in that at least an upper part of a non-sealed portion of at least one of the front-side and rear-side laminate films in the package bag main body or a part thereof in the vicinity of a side edge of the film-shaped ambient air-penetration preventing type one-way pouring nozzle is constructed with a laminate film having irregular inner surfaces. 
     
     
         16 . A flexible package bag provided with a nozzle of a non-return function according to  claim 15 , wherein the irregular inner surface formed in the laminate film is formed in a partial or full pattern by subjecting to embossing, blasting, knurling, wrinkling, or vertical-horizontal striping in the form of plane, island or stripe. 
     
     
         17 . A flexible package bag provided with a nozzle of a non-return function according to  claim 15 , wherein the film-shaped ambient air-penetration preventing type one-way pouring nozzle is formed by fusing two overlapping soft plastic films to each other at a peripheral edge portion other than a portion corresponding to a base end portion of the nozzle so as to constitute a central portion thereof as a pouring path and integrally uniting with the package bag main body, and generates a non-return function blocking penetration of ambient air by a closing action between mutual inner faces of the soft plastic films based on a fact that when the package bag main body is tilted to pour a liquid packing material therefrom, the pouring path is rendered into a wet state due to the passing of the liquid packing material to attach the liquid packing material to the inner face of the pouring path. 
     
     
         18 . A flexible package bag provided with a nozzle of a non-return function according to  claim 15 , wherein the film-shaped ambient air-penetration preventing type one-way pouring nozzle has an irregular inner surface in at least one of the front-side and rear-side overlapping plastic films at a side of a base end portion of the nozzle other than a predetermined tearing position of the nozzle and a vicinity thereof. 
     
     
         19 . A flexible package bag provided with a nozzle of a non-return function according to  claim 15 , wherein at the base end portion of the film-shaped ambient air-penetration preventing type one-way pouring nozzle are temporarily fused opposite sealant layers of the overlapping plastic films at a lower temperature to temporarily seal the inner face of the pouring path. 
     
     
         20 . A flexible package bag provided with a nozzle of a non-return function according to  claim 15 , wherein the package bag main body has a gas reserving space at a position of an upper and side sealing portion thereof higher than an upper edge of the film-shaped ambient air-penetration preventing type one-way pouring nozzle. 
     
     
         21 . A liquid material-filled packaging structure comprising a non-self supporting type liquid material-filled packaging body formed by deaeration-packing a liquid or viscous packing material into a non-self supporting type flexible package bag comprised of a package bag main body formed by seal-joining front-side and rear-side flexible laminate films and a film-shaped one-way pouring nozzle protruded from a side portion of the package bag main body and formed by closing a pair of overlapping soft plastic films to each other in the presence of a liquid packing material, wherein at least an upper part of a non-sealed portion of at least one of the front-side and rear-side laminate films in the package bag main body or a part thereof in the vicinity of a side edge of the film-shaped ambient air-penetration preventing type one-way pouring nozzle is constructed with a laminate film having irregular inner surfaces, and a self-supporting type outer cylindrical packaging vessel for housing the non-self supporting type liquid material-filled packaging body which is provided at its one-side portion with tear-guide perforations for nozzle drawing for exposably housing the film-shaped one-way pouring nozzle and exposing a tip portion of the nozzle to protrude an openable overhang small bag and dispose a self-supportable bottom plate. 
     
     
         22 . A liquid material-filled packaging structure according to  claim 21 , wherein the irregular inner surface formed in the laminate film is formed in a partial or full pattern by subjecting to embossing, blasting, knurling, wrinkling, or vertical-horizontal striping in the form of plane, island or stripe. 
     
     
         23 . A liquid material-filled packaging structure according to  claim 21 , wherein the film-shaped ambient air-penetration preventing type one-way pouring nozzle is formed by fusing two overlapping soft plastic films to each other at a peripheral edge portion other than a portion corresponding to a base end portion of the nozzle so as to constitute a central portion thereof as a pouring path and integrally uniting with the package bag main body, and generates a non-return function blocking penetration of ambient air by a closing action between mutual inner faces of the plastic films based on a fact that when the package bag main body is tilted to pour a liquid packing material therefrom, the pouring path is rendered into a wet state due to the passing of the liquid packing material to attach the liquid packing material to the inner face of the pouring path. 
     
     
         24 . A liquid material-filled packaging structure according to  claim 21 , wherein the film-shaped ambient air-penetration preventing type one-way pouring nozzle has an irregular inner surface in at least one of the front-side and rear-side overlapping soft plastic films at a side of a base end portion of the nozzle other than a predetermined tearing position of the nozzle and a vicinity thereof. 
     
     
         25 . A liquid material-filled packaging structure according to  claim 21 , wherein at the base end portion of the film-shaped ambient air-penetration preventing type one-way pouring nozzle are temporarily fused opposite sealant layers of the overlapping soft plastic films at a lower temperature to temporarily seal the inner face of the pouring path. 
     
     
         26 . A liquid material-filled packaging structure according to  claim 21 , wherein the package bag main body has a gas reserving space at a position of an upper and side sealing portion thereof higher than an upper edge of the film-shaped ambient air-penetration preventing type one-way pouring nozzle. 
     
     
         27 . A liquid material-filled packaging structure according to  claim 21 , wherein the non-self supporting liquid-filled packaging body is housed and kept in the self-supporting type outer package bag at a suspended state by fusing a horizontal seal portion at an upper end part of the packaging body to an upper end portion of the outer package bag. 
     
     
         28 . A liquid material-filled packaging structure according to  claim 21 , wherein the self-supporting outer cylindrical packaging vessel has a flat bottom portion at its lower end portion and is a flexible package bag made from an openable soft laminate film for exchanging the non-self supporting type liquid material-filled packaging body.