| 摘要 |
PROBLEM TO BE SOLVED: To provide an easily unsealable packaging bag which controls the occurrence of wrinkles on a heat-sealed face and the blocking of films and has a beautiful appearance. SOLUTION: This packaging bag 1 is formed with a laminated film containing a biaxially oriented polystyrenic resin film having a thickness of 10-60 μ and an unoriented polyolefinic resin film having a thickness 10-80 μ, which are positioned in such a manner that the biaxially oriented polystyrenic resin film forms an outer side of the bag and that the unoriented polyolefinic resin film forms an inner side of the bag, and is heat-sealed so that a heat-sealed line 2 having a width of 3-10 mm is positioned at an edge of the outer circumference of the bag. In this bag, a melting point of the unoriented polyolefinic resin film in a heat-sealed layer is 70-105 deg.C. |
