| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging bag which is composed of two rectangular films 1a and 1b, has principal-rafter seal parts 2a and 2b serving as tab parts on unsealing, on the front and back surfaces, allows easy unsealing through peeling of an end edge seal part 3a when the principal-rafter seal parts 2a and 2b are pinched and pulled and prevents occurrence of poor packaging due to formation of pin holes in the intersection part between the principal-rafter seal parts 2a and 2b of the end edge seal part 3a. ! SOLUTION: Principal-rafter seal parts 2a and 2b and an end edge seal part 3a are formed as easily peelable seal parts with a seal strength of 0.5-10 N/15 mm width. With the total thickness of rectangular films 1a and 1b as T mm, the end edge seal part 3a is intersected with end parts of the principal-rafter seal parts 2a and 2b in a state where both mating lines 4a and 4b of the principal-rafter seal parts 2a and 2b are deviated mutually in a range of T+1 mm to T+2 mm and faces each other. |
