Fill packaging method and fill packaging machine for liquid packing material

Abstract

In a method for forming a lateral sealed portion, a liquid packing material can be filled without biting bubbles, granulates and so on included in the liquid packing material into the lateral sealed portion. In a method for forming a lateral sealed portion with a pair of lateral sealing rolls after a packaging film fed and run is folded at its central portion and a vertical sealing is performed at their side edge parts to shape into a cylindrical form and a liquid packing material is filled into an inside of the cylindrically formed packaging film, at least a folded side part of the cylindrically formed packaging film is pushed with a pushing means arranged between heat sealing bars located at equal intervals in a circumferential direction of the lateral sealing roll and the lateral sealed portion is formed at a pushed position with the pair of lateral sealing bars.

1 . A method for fill packaging a liquid packing material by folding a packaging film fed and run in a longitudinal direction at its central portion so as to face adhesive layers or sealant layers to each other, forming a vertical sealed portion at side edge parts of the folded packaging film in the longitudinal direction to shape into a cylindrical form, filling the liquid packing material into an inside of the cylindrically formed packaging film, tucking the packaging film in a direction perpendicular to the longitudinal direction with a pair of lateral sealing rolls to form a lateral sealed portion extending over a full width of the packaging film to thereby fill package the liquid packing material into the packaging film, characterized in that at least a folded side part of the cylindrically formed packaging film is pushed with a pushing means arranged between heat sealing bars located at equal intervals in a circumferential direction of the lateral sealing roll and the lateral sealed portion is formed at a pushed position with the pair of lateral sealing rolls. 
     
     
         2 . A method for fill packaging a liquid packing material by folding a packaging film fed and run in a longitudinal direction at its central portion so as to face adhesive layers or sealant layers to each other, forming a vertical sealed portion at side edge parts of the folded packaging film in the longitudinal direction to shape into a cylindrical form, filling the liquid packing material into an inside of the cylindrically formed packaging film, tucking the packaging film in a direction perpendicular to the longitudinal direction with a pair of lateral sealing rolls to form a lateral sealed portion extending over a full width of the packaging film to thereby fill package the liquid packing material into the packaging film, characterized in that at least a folded side part of the cylindrically formed packaging film is pushed with a pushing means arranged between heat sealing bars located at equal intervals in a circumferential direction of the lateral sealing roll, while both side faces of the cylindrically formed packaging film are tucked with a squeezing means in the running direction of the packaging film and in front of the lateral sealing rolls to intermittently squeeze out the liquid packing material, and the lateral sealed portion is formed with the pair of lateral sealing rolls at the position worked by the pushing means and the squeezing means. 
     
     
         3 . The method for fill packaging a liquid packing material according to  claim 1 , wherein the pushing means is a push bar pushing the cylindrically formed packaging film over its full width. 
     
     
         4 . The method for fill packaging a liquid packing material according to  claim 1 , wherein the pushing means is a push plate pushing the folded portion of the cylindrically formed packaging film over its full length. 
     
     
         5 . The method for fill packaging a liquid packing material according to  claim 2 , wherein the squeezing means is a pair of squeeze plates. 
     
     
         6 . The method for fill packaging a liquid packing material according to  claim 5 , wherein the pair of squeeze plates are moved at a displacement position of coming close to or free from each other based on a nature of the packaging film and filling conditions. 
     
     
         7 . The method for fill packaging a liquid packing material according to  claim 5 , wherein at least one of the pair of squeeze plates is provided at its tip section with a gas blowing port and the liquid packing material interposed in the cylindrically formed packaging film is squeezed out by a pressure of a gas blown from the gas blowing port. 
     
     
         8 . A fill packaging machine comprising a vertical sealing means for folding a packaging film fed and run in a longitudinal direction at its central part so as to face adhesive layers or sealant layers to each other and forming a vertical sealed portion at side edge parts of the folded packaging film in the longitudinal direction to shape into a cylindrical form, and a lateral sealing means comprised of a pair of lateral sealing rolls for subjecting the packaging film to lateral sealing in a direction perpendicular to the longitudinal direction over the full width of the packaging film and at intervals in the longitudinal direction of the packaging film to form package bodies, characterized in that a pushing means for pushing at least a portion corresponding to a folded side of the packaging film is provided between heat sealing bars located at equal intervals in a circumferential direction of the lateral sealing roll. 
     
     
         9 . A fill packaging machine comprising a vertical sealing means for folding a packaging film fed and run in a longitudinal direction at its central part so as to face adhesive layers or sealant layers to each other and forming a vertical sealed portion at side edge parts of the folded packaging film in the longitudinal direction to shape into a cylindrical form, and a lateral sealing means comprised of a pair of lateral sealing rolls for subjecting the packaging film to lateral sealing in a direction perpendicular to the longitudinal direction over the full width of the packaging film and at intervals in the longitudinal direction of the packaging film to form package bodies, characterized in that a squeezing means located so as to tuck both side faces of the cylindrically formed packaging film and capable of moving in a direction of coming close to or free from each other is provided in the running direction of the packaging film and in front of the lateral sealing rolls, and a pushing means for pushing at least a portion corresponding to a folded side of the packaging film is provided between heat sealing bars located at equal intervals in a circumferential direction of the lateral sealing roll. 
     
     
         10 . The fill packaging machine according to  claim 8 , wherein the pushing means is a push bar pushing the cylindrically formed packaging film over its full width. 
     
     
         11 . The fill packaging machine according to  claim 8 , wherein the pushing means is a push plate pushing the folded portion of the cylindrically formed packaging film over its full length. 
     
     
         12 . The fill packaging machine according to  claim 9 , wherein the squeezing means is a pair of squeeze plates. 
     
     
         13 . The fill packaging machine according to  claim 12 , wherein at least one of the pair of squeeze plates is provided at its tip section with a gas blowing port. 
     
     
         14 . The fill packaging machine according to  claim 11 , wherein the push plate is constituted so that the position can be adjusted in accordance with the width of the cylindrically formed packaging film. 
     
     
         15 . The fill packaging machine according to  claim 11 , wherein a pushing width of the push plate in an axial direction of the lateral sealing roll is 1-50% of the width of the cylindrically formed packaging film. 
     
     
         16 . The fill packaging machine according to  claim 10 , wherein the push bar is disposed adjacent to the heat sealing bar at a front side of the lateral sealing roll in the rotation direction of the heat sealing bar.