Abstract: A production method for a pleated film according to the present invention includes an introduction step for moving an elongated film for use as a packaging body and introducing the film into a gap between a pair of pleat-forming plates disposed with a gap therebetween so that respective inner surfaces of the film oppose each other, a fixing step for fixing the film to the pair of pleat-forming plates, and a step for forming a pleat extending in a latitudinal direction of the film by closing the gap between the pair of pleat-forming plates, wherein sealing bars are provided on the pair of pleat-forming plates on opposing surfaces of the pleat-forming plates.

Abstract: A packaging material is formed of a composite film obtained by bonding a first film formed of a resin film and a second film having a stretch ratio lower than a stretch ratio of the resin film forming the first film or formed of a non-oriented resin film. The first film has a linear cut, a predetermined length in the longitudinal direction of the cut, and a predetermined width in a direction perpendicular to the cut. The packaging material includes a first strongly bonded section in which the first film and the second film are firmly bonded and a first weakly bonded section and a second weakly bonded section provided at both sides of the first strongly bonded section, with the first film and the second film being weakly bonded in the first weakly bonded section and the second weakly bonded section.

Abstract: The objective of the present invention is to provide a composite container, as represented by a composite container which has a gas barrier property, an anti-moisture property, a shape retaining property, an anti-shock property, an easy-to-open property, and a resealing function, can be easily opened, and facilitates the extraction of the contents.

Abstract: A pleated stand-up packaging pouch has a rib in a pinch form which is formed by adhering inner faces of end edges of the packaging material and at least one pleat which is formed by folding the pleated stand-up packaging material in a three-ply strip form in the orthogonal direction to its longitudinal direction and adhering inner faces of the folded portions, and is characterized in that the pleat formed on an edge between a folded bottom face portion and a peripheral portion extends from the peripheral portion in the same plane as the peripheral portion, and the bottom face portion and an upper end of an underside face of the pleat form a substantially right angle, and the pleat has a cut-off portion at the portion where the pleat and the rib cross.