Abstract: For the fabrication of a bag-in-box (BIB) package, there is first provided a semifinished, collapsed BIB package wherein a flattened bag is placed within a collapsed box and secured to at least one of its inside surfaces by means of an adhesive. After erecting the package, the bag is inflated into close internal contact with the box by introducing a gas under pressure through a fitment attached to the bag and projecting outwardly of the box. The opposite ends of the box are closed with sets of foldable end flaps, with the aid of an adhesive. Preferably, the bag is further secured to the inside surfaces of a pair of opposed ones of the four bottom end flaps of the box. The opposed pair of bottom flaps are held folded out during the introduction of the pressurized gas into the bag, in order that the bottom end portion of the inflated bag may make neat contact with the inside surfaces of the box. There is also disclosed herein an apparatus for thus fabricating the BIB package.

Abstract: A method and apparatus for lining bulk box blanks starting with flat, seamed blanks and resulting in flat, lined, tubular blanks. Glue is applied across the length of the seamed blanks excluding the seam regions. After a liner is placed on the adhesive bearing surface of the blank the blank and liner are moved together to a compression station in a direction transverse to the direction of glue application. The liner and blank are pressed together in the compression station and then forwarded to a folding station where the blank quarter sections defined by preformed seams and slits are folded together atop the remaining, intermediate half section to form a flattened tubular blank. While the blank is enroute to the folding station, glue is applied to a flap along the edge of one quarter section to secure the two unattached edges of the blank together to form the tubular blank.