Patent ID: 8157445

Claim:
A plastic pouch comprising an obverse surface film and a reverse surface film, a folded-back section communicating with a body of said plastic pouch being formed, on at least one position of said plastic pouch, by folding back, across the entire width of the pouch, said reverse surface film and heat-sealing peripheral edge portions of the pouch wherein said folded-back section is formed adjacent to and spaced inwardly from one end of said plastic pouch and wherein said plastic pouch includes an automatic opening mechanism formed at or near an end portion of said plastic pouch located near said folded back section, and wherein, as said plastic pouch is heated by a microwave oven, the end portion where the automatic opening mechanism is provided is caused to rise upwardly starting at the folded-back section and the automatic opening mechanism automatically opens wherein, in a peripheral-edge seal portion of said folded-back section, holes are formed in film layers located inwardly of outmost film layers of said obverse surface film and said reverse surface film that form peripheral-edge sealed portions of each of the folded-back sections, and the outmost film layers of said obverse surface film and said reverse surface film are heat-sealed together through the holes.