Package containing pressured liquid

A package for pressurized fluid contents comprising a liquid-tight, elongated, cushion-shaped, flexible inner container containing said fluid contents and a substantially non-extensible elongate outer tubular casing therefor, said cushion-shaped container having a pair of opposed vertical seals along the length of the container and corner lugs folded back against the pair of opposed seals, the upper and lower ends of the elongated container having a convex shape, said casing having a length at least equal to that of said container and a top edge portion with two opposed circumferential portions folded inwardly toward each other against at least a portion of the convex upper end of said container and opposed intermediate circumferential portions of the top edge portion of said casing positioned between the opposed inwardly folded portions, the intermediate circumferential portions remaining unfolded and extending upwardly as extensions of the wall of the casing to resist unfolding of said inwardly folded portions, the container being in contact with an inner surface of said casing along said seals to reinforce the latter, the folded corner lugs of the container being fixed to the inner wall of said casing, the two inwardly folded opposed portions of said casing being fixed to the convex end of said container, the inner edges of the two opposed inwardly folded circumferential portions at the top of the casing being spaced apart to provide a substantially rectangular opening in said casing to expose a portion of the convex end portion of the container, the exposed portion being provided with at least one pouring opening therein and further including releasable means for covering the pouring opening.