Stand-up packaging pouch, package body and feed roll, and manufacturing methods therefor

1. A stand-up packaging pouch provided in a flattened state in which at least a front face portion and a rear face portion are constituted by a packaging material having a pleat which extends in an orthogonal direction to the longitudinal direction of the pouch and is formed by folding a portion of the packaging material in a three-ply strip form and adhering inner surfaces of this folded portion, and which is provided with side gussets at both sides or one side thereof to form side face portions and has been subjected to a bottom heat seal or a top heat seal, wherein when the stand-up packaging pouch is opened out into a three dimensional state, filled with a product to be packaged, and an opening thereof is sealed, said pleat is provided at least at an edge between the front face portion and a bottom face portion and at an edge between the rear face portion and the bottom face portion in the same plane as the front face portion and rear face portion such that the bottom face portion and rear face portion of the pleat form a substantial right angle at an upper end of the rear face portion of the pleat, thereby concealing said bottom face portion when seen from the direction of the front face portion or rear face portion.

2. The stand-up packaging pouch according to claim 1 , wherein ribs are formed on two side edges of said front face portion and two side edges of said rear face portion.

3. The stand-up packaging pouch according to claim 1 , wherein the pouch is manufactured from a sheet of a packaging material having two pleats, the two pleats being positioned on the lower end and the upper end of at least the front face portion and rear face portion.

4. The stand-up packaging pouch according to claim 1 , wherein the pouch is manufactured from a sheet of a packaging material having three pleats, the three pleats being positioned on the lower end, upper end, and in an intermediate position of at least the front face portion and rear face portion.

5. A package body which is formed by filling the stand-up packaging pouch according to claim 1 with a product to be packaged and sealing the stand-up packaging pouch.

6. A stand-up packaging pouch which is manufactured in a flattened state from a sheet of a packaging material having a pleat which extends in an orthogonal direction to the longitudinal direction of the pouch and which is formed by folding a portion of the packaging material in a three-ply strip form and adhering inner surfaces of this folded portion, and is formed by bending this packaging material such that a horizontal cross-section of the bent packaging material forms a loop, closing two edges of a rear face portion of the bent packaging material by applying a heat seal thereto to form a flattened tubular form, and applying a top heat seal or a bottom heat seal, wherein when the stand-up packaging pouch is opened into a three dimensional form, filled with a product to be packaged, and the opening thereof is sealed, said pleat is formed in the same curved plane as a peripheral face portion of the three-dimensional opened pouch such that said bottom face portion and the rear face portion of the pleat form a substantial right angle at the upper end of the rear face portion of the pleat, whereby the pleat conceals the bottom face portion, and the pouch has top gussets and bottom gussets.

7. A package body which is constituted by a sheet of a packaging material having a pleat which extends in an orthogonal direction to the longitudinal direction of a packaging pouch and which is formed by folding a portion of the packaging material in a three-ply strip form and adhering inner faces of this folded portion, and is formed by bending this packaging material into a loop such that the horizontal cross section forms a flattened circle, closing two edges in the width direction by applying a heat seal thereto to form a tubular pouch, filling the tubular pouch with a product to be packaged, and applying a bottom heat seal on the lower end and a top heat seal on the upper end such that said pleat is provided on at least the peripheral edge of the bottom face portion to thereby form a face which extends from the peripheral face portion such that the bottom face portion and rear face portion of the pleat form a substantial right angle at the upper end of the rear face portion of the pleat, whereby the pleat conceals the bottom face portion, and the pouch has top gussets and bottom gussets.