| 摘要 |
The present invention is provided with: a pressing mold (25) configured from a top mold (27) and a bottom mold (28), and that creates a four-sided seal by means of sandwiching the four-sided seal section of a bag main body (11) and the four-sided seal section of a gas barrier functional sheet (12) between pressing surfaces, and then heating; a plurality of support pins (30) that are provided in a manner able to protrude from and recede into the bottom mold (28) and that position the gas barrier functional sheet (12) with respect to one surface of the bag main body (11) by means of penetrating the four-sided seal section of the bag main body (11) and the four-sided seal section of the gas barrier functional sheet (12); and a gas blowing means (29) that floats the gas barrier functional sheet (12) by means of blowing an inert gas at an area expansion section (12S) not overlapping the bag main body (11) of the gas barrier functional sheet (12) supported by the support pins (30). |
