| 摘要 |
PROBLEM TO BE SOLVED: To avoid the appearance that a laminate film is broken by containing an aluminum vapor deposition layer in the laminate film to form a V-shaped folding portion in a bag of the shape having a flat portion and the V-shaped folding portion. SOLUTION: A bag comprises flat portions 2 comprising a front surface and a rear surface, and V-shaped folding portions comprising right and left side portions folded into an inner bag, and its bottom portion is self-standing in a prismatic bottom shape. A laminate film to form the V-shaped folding portions 3 is formed of a laminate film including an aluminum vapor deposition layer while the laminate film to form the flat portions 2 is the laminate film including an aluminum foil layer. Even when the laminate film to form the V-shaped folding portions is wrinkled, the aluminum vapor deposition layer forming a gas barrier layer is not cracked, and a packaging bag represents no appearance that the laminate film is broken. |
