Easily tearable packing films

A packing bag that is formed by folding a rectangular packing film into a tubular body, heat sealing side end portions of the folded packing film as a bonded side portion of the tubular body and heat sealing both end openings of the tubular body,

• wherein said packing film is composed of an oriented plastic film formed as a first surface layer and provided with a coarse surface portion having a through hole therein, an aluminum foil formed as an intermediate layer, and a non-oriented plastic film formed as a second surface layer that is bonded through a binder layer,
• wherein said oriented plastic film, said aluminum foil and said non-oriented plastic film are laminated in this order so as to provide a multi-layer structure so that the non-oriented plastic film constitutes an inner surface layer formed as the tubular body, and
• wherein said oriented plastic film is laminated to the aluminum foil through an isocyanate binder having a solid component of 30 to 60 weight %, said coarse surface portion constitutes an area to be opened, and said area to be opened is positioned at a folded portion of the tubular body.

A package body formed by bending a rectangular packing film having a predetermined dimension so as to provide a tubular body, heat sealing both side end portions of the bent packing film as a bonded side portion and closing both end opening portions of the tubular body,

• wherein said packing film is composed of an oriented plastic film formed as a first surface layer and provided with a coarse surface portion having a through hole therein, an aluminum foil formed as an intermediate layer, and a non-oriented plastic film formed as a second surface layer that is bonded through a binder layer,
• wherein said oriented plastic film, said aluminum foil and said non-oriented plastic film are laminated in this order so as to provide a multi-layer structure so that said non-oriented plastic film constitutes an inner surface layer when formed as a tubular body, and
• wherein said oriented plastic film is laminated to the aluminum foil through an isocyanate a binder having a solid component of 30 to 60 weight %, said coarse surface portion constitutes an area to be opened so as to extend in a linear spiral shape on an outer surface of the tubular body.