초록 ▼

The bag for bag-in-box of this invention comprises: a bag body composed of flat portions and side portions each having a folding line along which the side portion is folded inward; oblique seal portions provided at respective corner portions of the bag body, the oblique seal portion being formed by

The bag for bag-in-box of this invention comprises: a bag body composed of flat portions and side portions each having a folding line along which the side portion is folded inward; oblique seal portions provided at respective corner portions of the bag body, the oblique seal portion being formed by obliquely cutting-off the respective corner portions; and a triangular fin portion integrally formed with the oblique seal portion; wherein the flat portion and the side portion are composed of several sheets of synthetic resin films that are superposed to each other. The dimensions of the bag shall be set within a predetermined range so as to meet the International Standard of a pallet. The opening portion to be formed on the outer box of the bag-in-box has a size enabling to sufficiently draw out a spout and the bag body portion around the spout to form a funnel-shape. According to the present invention, there can be provided an inner bag for a bag-in-box excellent in shock resistance, content discharging property and self-supporting property at a time when the inner bag is filled with the content.

대표청구항 ▼

[ What is claimed is:] [1.] A bag used as an inner bag for a bag-in-box having an outer box and the inner bag accommodated within the outer box, said bag comprising:a four-side-seal type bag body composed of a pair of opposing flat portions constituting front and back side portions and two side port

[ What is claimed is:] [1.] A bag used as an inner bag for a bag-in-box having an outer box and the inner bag accommodated within the outer box, said bag comprising:a four-side-seal type bag body composed of a pair of opposing flat portions constituting front and back side portions and two side portions connecting front and back side portions at both side ends thereof and respectively having folding lines along which the side portions are folded inward;oblique seal portions provided at respective corner portions of the bag body; andtriangular fin portions formed at respective corner portions of the bag body;wherein said flat portions and said side portions are composed of at least two sheets of synthetic resin films that are superposed to each other in a non-bonded state;wherein said oblique seal portion is formed such that the two side portions are folded along the folding line, opposing inner surfaces of the bag body are bonded to each other between a first arbitrary point on top seal portion or bottom seal portion to a second arbitrary point on a side seal portion so as to obliquely connect said top seal portion or bottom seal portion and the side seal portion, the oblique seal portion being linear;wherein said triangular fin portion being defined by the side seal portion, the oblique seal portion and one of the top seal portion and the bottom seal portion;and wherein each of said flat portions and said side portions has a shape of a square or a rectangle, and the bag being a cube or a rectangular parallelepiped when filled.