Abstract: To provide a method for readily forming an easily separable portion having an adhesive strength that is required as a package bag on packaging film, a package bag having an easily separable portion formed by this method, and a filling-packing machine utilizing this method. A method forming an easily separable portion in packaging film by interposing at least two packaging films between a horn emitting ultrasonic waves and an anvil oppositely disposed to the horn, and vibrating the packaging films by the ultrasonic waves, in which a vibratable layer is provided on the packaging film in at least one of the horn side and the anvil side.

Abstract: A fill packaging machine includes a vertical sealing means for folding a packaging film at its central part and continuously forming a vertical sealed portion at its side edge part to shape into a cylinder, and a lateral sealing means for forming lateral sealed portions in a direction perpendicular to the longitudinal direction of the packaging film. An easy separable sealed portion is continuously formed in the side edge part of the packaging film by the first vertical sealed portion forming section, and a vertical sealed portion having a partial non-sealed portion of a bottle mouth type is formed on the easy separable sealed portion by the second vertical sealed portion forming section. The first vertical sealed portion forming section is a pair of heat sealing rolls or heat sealing plates, a surface of at least one of which is made from an elastic material softer than a metal.

Abstract: A fill packaging machine includes a vertical sealing means for folding a packaging film at its central part and continuously forming a vertical sealed portion at its side edge part to shape into a cylinder, and a lateral sealing means for forming lateral sealed portions in a direction perpendicular to the longitudinal direction of the packaging film. An easy separable sealed portion is continuously formed in the side edge part of the packaging film by the first vertical sealed portion forming section, and a vertical sealed portion having a partial non-sealed portion of a bottle mouth type is formed on the easy separable sealed portion by the second vertical sealed portion forming section. The first vertical sealed portion forming section is a pair of heat sealing rolls or heat sealing plates, a surface of at least one of which is made from an elastic material softer than a metal.

Abstract: [PROBLEM TO BE SOLVED] To provide a method for readily forming an easily separable portion having an adhesive strength that is required as a package bag on packaging film, a package bag having an easily separable portion formed by this method, and a filling-packing machine utilizing this method. [SOLUTION] A method forming an easily separable portion in packaging film by interposing at least two packaging films between a horn emitting ultrasonic waves and an anvil oppositely disposed to the horn, and vibrating the packaging films by the ultrasonic waves, in which a vibratable layer is provided on the packaging film in at least one of the horn side and the anvil side.

Abstract: A rectangular, flexible butt-seamed package bag and a method for using the same is provided in which the pouring of a single type of a liquid packing material filled and packed in the filling space for the packed material from the package bag can be easily performed. A butt-seamed package bag formed by joining both side portions of a sealant layer of a laminate film for packing to each other at a butt state and joining bottom portions or top portions thereof to define a filling space for a single packed material, characterized in that a pouring path for the packed material is disposed in a middle part of a butt-seamed joint portion in an extending direction thereof, and at least a part of the pouring path is provided with an easily separable portion having a joint strength relatively lower than that of the butt-seamed joint portion.

Abstract: A rectangular, flexible butt-seamed package bag and a method for using the same is provided in which the pouring of a single type of a liquid packing material filled and packed in the filling space for the packed material from the package bag can be easily performed. A butt-seamed package bag formed by joining both side portions of a sealant layer of a laminate film for packing to each other at a butt state and joining bottom portions or top portions thereof to define a filling space for a single packed material, characterized in that a pouring path for the packed material is disposed in a middle part of a butt-seamed joint portion in an extending direction thereof, and at least a part of the pouring path is provided with an easily separable portion having a joint strength relatively lower than that of the butt-seamed joint portion.