EASILY TEARABLE PACKAGING MATERIAL AND EASILY UNSEALABLE PACKAGING BAG

摘要

PROBLEM TO BE SOLVED: To provide an easily tearable packaging material which is high in strength and excellent in openability due to linear tearability in the machine direction (MD) and an easily unsealable packaging bag.;SOLUTION: In the easily tearable packaging material, in laminated films 22, 24 and 25, each composed of at least three layers including a sealant layer, the outermost layer is a biaxially oriented polyester film having a maximum orientation angle of at least 30°, a film layer adjacent to the sealant layer is an oriented film having linear tearability of a linear tear dislocation of 10 mm or below, and the lamination strength between the oriented film and the sealant layer is at least 2.5 N/cm. The easily unsealable packaging bag is made by heat-fusing the sealant layers of the easily tearable packaging materials in such a manner that the easy tear direction of the materials is the bag tearing direction.;COPYRIGHT: (C)2009,JPO&INPIT