초록 ▼

Bag-in-box packaging of products which will not readily flow under gravity conditions for discharge. The bag is of special three-ply form to provide separate product and pressure chambers. Coupling fitments are connected independently to the respective chambers. When it is desired to dispense the pr

Bag-in-box packaging of products which will not readily flow under gravity conditions for discharge. The bag is of special three-ply form to provide separate product and pressure chambers. Coupling fitments are connected independently to the respective chambers. When it is desired to dispense the product, the product fitment is exposed at a wall of the box along with the pressure fitment. A dispensing valve on the product fitment is opened and pressure is supplied and maintained in the pressure chamber to expand it and exert pressure through the baffle wall on the product in the product chamber to aid in the dispensing of the product therefrom. Before applying dispensing pressure, the box is disposed in an enveloping pressure-resisting unit. A novel method is provided for efficiently producing the special bag.

대표청구항 ▼

A disposable flexible bag for packaging a product which will not readily flow by gravity comprising at least three plies of flexible material sealed together at their peripheral edges, the plies forming an outer product wall, an intermediate product baffle wall, and an outer displacement wall, there

A disposable flexible bag for packaging a product which will not readily flow by gravity comprising at least three plies of flexible material sealed together at their peripheral edges, the plies forming an outer product wall, an intermediate product baffle wall, and an outer displacement wall, thereby providing a product-receiving chamber and a pressure-receiving chamber which are independent of each other, and coupling fitments comprising product and pressure fitments connected independently to the respective chambers, said fitments being mounted on one of said outer walls, and a sealing seam between the fitments which seals the outer wall on which they are disposed to the inner baffle wall so that the product fitment communicates with the product chamber and the pressure fitment communicates with the pressure chamber independently.